1
FEATURES
High stability
Fluctuation (p-p) ..................... 1.0 % (Typ.)
2.0 % (Max.)
Drift .................................... ±0.5 % /h (Typ.)
Long life
Guaranteed life .................. 500 h to 1000 h
Average life ......................1000 h to 2000 h
Virtually no arc point shift .......0.1 mm (Max.)
Instantaneous starting and restarting
High intensity in deep UV region
Point light source, High luminance
APPLICATIONS
Wafer Inspection
Semiconductor annealing
Fluorescent microscope
Blood analyzer
UV curing for epoxies, etc.
Interferometer, Refractometer
Microfilm enlarger
A Mercury-Xenon Lamp is a special lamp designed to
provide high radiant energy in the ultraviolet region.
Since an optimum mixture of mercury and xenon gas is
enclosed, this lamp offers the characteristics of both
Xenon lamps and super-high-pressure Mercury lamps.
For example, the spectral distribution of a Mercury-Xe-
non Lamp includes a continuous spectrum from ultra-
violet to infrared of the xenon gas and strong mercury
line spectra in the ultraviolet to visible range. In com-
parison to super-high-pressure mercury lamps, the ra-
diant spectrum in the ultraviolet region is higher in in-
tensity and sharper in width. The Mercury-Xenon Lamp
also features instantaneous starting and restarting, which
are difficult with super-high-pressure mercury lamps,
thus making them an excellent choice as ultraviolet light
sources.
Conventional Mercury-Xenon Lamps have a shortcom-
ing in that the arc point fluctuates and moves gradually
with operating time as a result of the cathode erosion.
Hamamatsu has used its many years of experience and
expertise in the fields of photonics to produce Super-
Quiet (SQ) Mercury-Xenon Lamps. The Hamamatsu SQ
Mercury-Xenon Lamps employ a specially developed
cathode which has minimized the cathode erosion, thus
allowing extremely high stability and long life.
SUPER-QUIET
MERCURY-XENON LAMPS
DEEP UV LIGHT SOURCE
FOR PRECISION MEASUREMENT
PATENT
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2003 Hamamatsu Photonics K.K.
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
2
GLASS BULB
ANODE
HIGH PURITY Xe GAS
HIGH PURITY Hg
CATHODE
MOVEMENT OF ARC POINT
Conventional Mercury-Xenon Lamps have a shortcoming
in that their arc point can move gradually as a result of cath-
ode erosion during normal operation. The SQ Mercury-Xe-
non Lamp uses a specially developed, durable cathode
which shows negligible erosion with operating time. There-
fore, once the optical system is set up, it is no more neces-
sary to adjust it over the operating life of the lamp.
Figure 3: Comparison of Cathode Erosion
Super-Quiet Mercury-Xenon Lamps
After 5 h Operation After 1000 h Operation
Conventional Lamp
After 5 h Operation After 1000 h Operation
POWER SUPPLY
Mercury-Xenon Lamps must have a stable light emission
output to be used as light source for measuring purposes.
Therefore, because the output radiant intensity is approxi-
mately in proportion to the current flowing into the lamp, a
stabilized power supply should be provided for the lamp.
Figure 4 shows a diagram of such a stabilized power supply
consisting of a main power supply and a trigger power sup-
ply. Stabilized power supplies specifically designed for
Hamamatsu SQ Mercury-Xenon Lamps are also available
from Hamamatsu (See page 8).
Figure 4: Block Diagram of Stabilized Power Supply
MAIN POWER
SUPPLY TRIGGER POWER SUPPLY
CONSTANT DC CURRENT POWER
SUPPLY
TRIGGER
SWITCH
TRIGGER
TRANSFORMER
MERCURY-XENON LAMP
ANODE
CATHODE
AC
TLSXC0034EA
CONSTRUCTION AND OPERATION
Figure 1 shows the construction of the lamp. The lamp has
same shape as that of the conventional Xenon short-arc
lamp or super-high-pressure mercury lamp with two elec-
trodes of cathode and anode. The electrodes face each other
in an oval glass bulb which is filled with a certain amount of
mercury and high purity xenon gas under several MPa of
pressure.
Figure 1: Construction of Lamp
TLSXC0033EA
As for operation, Mercury-Xenon Lamps utilize the principle
of light emission by arc discharge. This type of lamp must
be installed either vertically with the anode above the cath-
ode or horizontally. Initially an arc discharge triggers the
lamp to start its emission. The lamp maintains stable op-
eration via an applied dc voltage. The light emission from
the arc discharge has strong line spectra ranging from ul-
traviolet to infrared radiation. After the lamp is switched on,
emission of light from the xenon gas occurs. This is accom-
panied by efficient vaporization of the mercury, and emis-
sion of light for the mercury spectrum. It takes several min-
utes for the radiant intensity to reach the maximum value,
as the gas pressure inside the bulb increases after the bulb
is lit up until it reaches a thermal equilibrium. The gas pres-
sure during operation is approximately 3 times higher than
that when the lamp is not operated. Figure 2 shows the typi-
cal temperature distribution of a lamp bulb after thermal
equilibrium.
Figure 2: Typical Temperature Distribution of a Lamp Bulb
(at Vertical Operation)
BULB
ARC POINT
10050 200 300 500
400
BULB TEMPERATURE (°C)
TLSXB0007EA
STABILITY OF ARC (FLUCTUATION)
The elimination of arc fluctuation has been an important is-
sue for Mercury-Xenon Lamp users in precision light mea-
suring applications. Hamamatsu has studied this “fluctua-
tion” carefully, and ascertained that it is mostly an irregular
movement of the arc point caused by a lack of electrons
emitted from the cathode. The Hamamatsu SQ Mercury-
Xenon Lamp has solved this problem by incorporating a high-
performance cathode especially developed for this purpose.
SUPER-QUIET MERCURY-XENON LAMPS
3
1) Main Power Supply
Besides supplying the lamp with stable dc power, the main
power supply keeps the cathode at the optimal operating
temperature with a specified current. The cathode tempera-
ture is very important for lamps: when too high, evaporation
of the cathode materials is accelerated; when too low, work
function becomes worse, causing cathode sputtering which
greatly reduces the lamp’s life.
The lamp current must be set within a specified range to
ensure lamps to operate stably for a long time. For this rea-
son, each wattage lamp has their respective operating lamp
current values and ranges. Since the radiant intensity is ap-
proximately in proportion to the lamp current values (as
agreed from Figure 9), the power supply must be designed
with higher stability than is required from the lamp.
2) Trigger Power Supply
This is for starting the lamp to discharge. As shown in Fig-
ure 4, it gives a high frequency triggering pulse to the lamp
load by inductive coupling. The lamp’s initial discharge char-
acteristic is that its starting voltage is approximately 10 kV.
However, the characteristic fluctuates according to cathode
fatigue or variations of the filled-in gas pressures. There-
fore, in actual devices a triggering voltage of approximately
20 to 25 kV should be applied, taking safety margin into
consideration as well.
CHARACTERISTICS
With regard to data which differs with the wattage ratings, a
typical example would be the use of a 200 W lamp (type
L2423). The unspecified data that is given, applies to all the
lamps irrespective of the wattage of lamp.
1) Spectral Distribution
The radiation spectrum of the lamp has strong brilliant line
spectra from the ultraviolet to the visible range. Figure 5
shows the radiated spectral distribution, for Mercury-Xenon
lamps and other lamps. This spectral distribution includes
both the radiation spectrum of a Xenon lamp and brilliant
mercury line spectra.
Figure 6 shows a comparison of the radiated spectral distri-
bution of a Mercury-Xenon Lamp and a super-high-pres-
sure mercury lamp. Compared to the super-high-pressure
mercury lamp, the Mercury-Xenon Lamp provides greater
radiation intensity in the deep UV range from 300 nm down-
ward, and is characterized by sharp line spectra with high
peak.
Figure 5: Spectral Distribution of Various Lamps
TLSXB0085EC
300200
0.01
0.1
1
10
100
400 500 600 700 800 900 1000
RADIANT INTENSITY (µW/cm
2
•
nm
-1
) at 50 cm
WAVELENGTH (nm)
MERCURY-XENON LAMP (200 W)
DEUTERIUM LAMP (30 W)
HALOGEN LAMP (24 V -150 W)
XENON LAMP (150 W)
(313)
(405)
(577)
(365)
(436)
(546)
Figure 6: Comparison of Mercury-Xenon Lamp with
Super-High-Pressure Mercury Lamp
TLSXB0078EA
2) Luminance Distribution
Maximum luminance is located nearby the cathode, and it
decreases towards the anode. Figure 7 shows the luminance
for a 200 W lamp distribution relative to the cathode area.
Figure 7: Luminance Distribution (200 W Lamp L2423)
TLSXC0032EA
3) Flux Distribution
Figure 8 shows the flux distribution of the lamps. It has
uniform distribution in the horizontal direction.
Figure 8: Flux Distribution (at Vertical Operation)
TLSXC0031EA
180°
200°
220°
240°
260°
280°
300°
320°
340°20°
40°
60°
80°
100°
120°
140°
160°
0°
100 %
80
60
40
20
ANODE
CATHODE
+
-
(mm)
2.0
1.5
1.0
0.5
0
DISTANCE FROM CATHODE
40(%)
30 30
50
60
70
80
90
100
0.5 00.5
ARC WIDTH (mm)
LAMP CURRENT 8.0 A dc
AMBIENT TEMP. 25 °C
ANODE
CATHODE
RADIANT INTENSITY (µW/cm
2
• nm
-1
) at 50 cm
WAVELENGTH (nm)
200 300 400 500 600
0
10
20
30
40
50
60
297
313
365
577
405
436
546
SUPER-HIGH-
PRESSURE MERCURY
LAMP (200 W)
MERCURY-XENON
LAMP (200 W)
265
4
SUPER-QUIET MERCURY-XENON LAMPS
4) Lamp Current and Lamp Voltage
Figure 9 shows the current-voltage characteristic. The lamp
voltage slightly increases in accordance with the lamp cur-
rent.
Figure 9: Current-Voltage Characteristic
(200 W Lamp L2423)
TLSXB0086EA
3) Fluctuation and Operating Time
As has been stated, the radiant intensity decreases with
operating time. No conspicuous change in fluctuation, how-
ever, occurs with the elapsing of operating time. Figure 15
a) - d) show the change in fluctuation according to the
elapsed operating time and Figure 14 shows the block dia-
gram for fluctuation measurement.
LIFE
1) Radiant Intensity and Operating Time
The light output intensity decreases with operating time. This
is due to a loss of glass transmittance caused by blacken-
ing the bulb wall. This is due to evaporation of the cathode
material, and partly by solarization effects from ultraviolet
radiation on the bulb glass crystals. Figure 12 shows the
change of radiant intensity as a function of the operating
time.
(Typ. at 25 °C)
RELATIVE INTENSITY (%)
OPERATING TIME (h)
0 100 200 300 400 500 600 700 800 900 1000
0
100
90
80
70
60
(Typ. at 25 °C)
LAMP VOLTAGE (V dc)
OPERATING TIME (h)
0 500 1000 1500 2000
15
20
25
30
(Typ. at 25 °C)
RELATIVE INTENSITY (%)
OPERATING TIME (min)
0 5 10 15 20
0
50
100
MERCURY-XENON
LAMP
(200 W)
SUPER
HIGH PRESSURE MERCURY
LAMP (200 W)
(Typ. at 25 °C)
RELATIVE INTENSITY (%)
LAMP CURRENT (A dc)
6.5 7.0 7.5 8.0 8.5 9.0 9.5
60
0
80
100
120
140
SPECIFIED RANGE
(Typ. at 25 °C)
LAMP VOLTAGE (V dc)
LAMP CURRENT (A dc)
6.5 7.0 7.5 8.0 8.5 9.0 9.5
22
23
24
25
26
27
SPECIFIED RANGE
TLSXB0089EA
Figure 13: Lamp Voltage vs. Operating Time
(200 W Lamp L2423)
2) Lamp Voltage and Operating Time
The electrode distance in conventional lamps is gradually
increased due to sputtering phenomenon, resulting in in-
creased lamp voltage. Contrary to it, the SQ Mercury-Xe-
non Lamp exhibits negligible electrode spattering and there-
fore, the lamp voltage is almost constant over a long period
of operation. Figure 13 shows the change of the lamp volt-
age vs. operating time.
TLSXB0087EA
Figure 12: Radiant Intensity vs. Operating Time
(200 W Lamp L2423)
Figure 11: Radiant Intensity vs. Initial Operating Time
(200 W Lamp L2423)
TLSXB0090EA
5) Staibility of Radiant Intensity
5)-1 Radiant Intensity and Lamp Current
The output radiant intensity changes in proportion to the
lamp current. Figure 10 shows their relation. Furthermore,
compared to a super-high-pressure mercury lamp, the lamp
reaches its maximum radiant intensity within a very short
time. This is because the discharge through the enclosed
xenon gas causes the mercury to be efficiently vaporized.
This is shown in Figure 11.
Figure 10: Radiant Intensity vs. Lamp Current
(200 W Lamp L2423)
TLSXB0088EA
5
10 min
10 min
10 min
10 min
1.0 %
1.0 %
1.0 %
1.0 %
10 min
10 min
10 min
10 min
10 % 10 % 10 % 10 %
SQ MERCURY-XENON LAMP WINDOW 20 mm ND FILTER
APERTURE 5 mm
AMPLIFIER
SILICON PHOTODIODE
RECORDER
SQ MERCURY-
XENON LAMP
POWER SUPPLY
TLSXB0091EA
d) After 1500 h operation
c) After 1000 h operation
b) After 500 h operation
a) After 5 h operation
Figure 15: Fluctuation vs. Operating Time
TLSXC0030EA
Figure 14: Block Diagram for Fluctuation Measurment
6
Fused Silica
Fused Silica
Fused Silica
Ozone-free Silica
Fused Silica
Ozone-free Silica
Fused Silica
Ozone-free Silica
Fused Silica
Ozone-free Silica
Fused Silica
L2421
L2481
L2481-01
L2481-02
L2422
L2422-01
L2422-02
L7046
L2482
L7047
L2423
L2570
L2483
L2917
L8288
SUPER-QUIET MERCURY-XENON LAMPS
NOTE: Open-circuit voltages necessary for certain lighting of lamps.
The life end is defined as the time when the radiant intensity falls to 50 % of its initial value or when the output fluctuation exceeds ±2.0 %.
L2421 L2481 L2481-01
1.0
1.0
1.3
1.7
2.0
2.5
3.0
50
75
100
150
200
350
500
15
15
15
20
20
30
30
50
50
50
65
65
70
70
14
14
18
20
24
25
25
3.5±0.5
5.4±0.5
5.5±0.5
7.5±0.5
8.0±0.5
14.0±1.0
20.0±1.0
Remarks
Type No. Outline Window Material
Arc
Length
(mm)
Lamp
Current
(A dc)
Lamp
Voltage
(V dc)
Power
Con-
sumption
(W)
Supply
Voltage
Typ.
(V dc)
Trigger
Voltage
(kV)
50 W, Cathode Metal Base 7.5 mm
75 W, Cathode Metal Base 9 mm
75 W, Cathode Metal Base 7.5 mm
75 W, Metal Base with Screw
100 W, Cathode Metal Base 9 mm
100 W, Cathode Metal Base 7.5 mm
100 W, Metal Base with Screw
100 W, Ozone-free Silica Bulb,
Metal Base 9 mm
150 W, Metal Base with Screw
150 W, Ozone-free Silica Bulb,
Metal Base with Screw
200 W, Metal Base with Screw
200 W, Ozone-free Silica Bulb,
Metal Base with Screw
350 W, Metal Base with Screw
350 W, Ozone-free Silica Bulb,
Metal Base with Screw
500 W, Metal Base with Screw
L2481-02 L2422, L7046 L2422-01
TLSXA0006ECTLSXA0005ECTLSXA0045EC
TLSXA0007EC TLSXA0005EC TLSXA0006EC
UP
37.0 ± 0.5
7.5
12
7.5
2
2
METAL BASE
82 MAX.
11
90 MAX.
11
UP
37.0 ± 0.5
9
14
9
2
2
METAL BASE
82 MAX.
13
90 MAX.
13
UP
37.0 ± 0.5
7.5
14
9
2
2
METAL BASE
82 MAX.
13
90 MAX.
11
UP
37.0 ± 0.5
9
14
9
METAL BASE
M2.3
M2.3
82 MAX.
13
95 MAX.
13
UP
37.0 ± 0.5
9
14
9
2
2
METAL BASE
82 MAX.
13
90 MAX.
13
UP
37.0 ± 0.5
7.5
14
9
2
2
METAL BASE
82 MAX.
13
90 MAX.
11
7
C6979, -10, C2577
C6979
C6979-10
C2577
C6979
C6979-10
C2577
C7535
C7535-10
C2577
C7535
C7535-10
C2577
C4338
C2578
C2578
10
14
18
15
18
15
43
45
70
80
These dropper type power supplies need trigger unit. Please refer the page 8.
L2422-02 L2482, L7047 L2423, L2570
L2421
L2481
L2481-01
L2481-02
L2422
L2422-01
L2422-02
L7046
L2482
L7047
L2423
L2570
L2483
L2917
L8288
Not required
Not required
Not required
Not required
Not required
Forced Air Cooling
Forced Air Cooling
Vertical ±15 or Horizontal ±15
Vertical ±15 or Horizontal ±15
Vertical ±15 or Horizontal ±15
Vertical ±15 or Horizontal ±15
Vertical ±15 or Horizontal ±15
Vertical ±15
Vertical ±15
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
2.0
2.0
2.0
2.0
2.0
2.0
2.0
500
500
500
1000
1000
500
1000
1000
1000
1000
2000
2000
1000
2000
Life
Guar-
anteed
Life
(h)
Aver-
age
Life
(h)
Fluctua-
tion (p-p)
Max.
(%)
Drift
Typ.
(%)
Orientation
(degree)
Cooling Weight
(g)
HAMAMATSU
Power Supply
Type No.
Unit: mm
Output Stability
Type No.
TLSXA0047ECTLSXA0009EC
TLSXA0007EC TLSXA0055ED TLSXA0008EC
L2483, L2917 L8288
UP
37.0 ± 0.5
9
14
9
METAL BASE
M2.3
M2.3
82 MAX.
13
95 MAX.
13
UP
58.0 ± 0.5
12
18
12
METAL BASE
M4
M4
125 MAX.
15
150 MAX.
15
UP
58.0 ± 0.5
12
20
12
METAL BASE
M4
M4
125 MAX.
15
150 MAX.
15
UP
65.0 ± 0.5
13
26
13
METAL BASE
M5
M5
150 MAX.
20
175 MAX.
20
UP
70.0 ± 0.5
13
29
13
METAL BASE
M5
M5
150 MAX.
20
175 MAX.
20
8
CONTROL
100/200 V ac INPUT
+HV
(+)
(-)
STARTER
CIRCUIT
DC-DC
CONVERTER
AUXILIARY
DISCHARGE CIRCUIT
CONTROL CIRCUIT
CONTROLLING
PULSE DURATION
C4251/C4339 (OPTION)
CONTROL FEED BACK
100/200 V ac INPUT
+
-
+HV
(+)
(-)
STARTER
CIRCUIT
MAIN
DISCHARGE
CIRCUIT
AUXILIARY
DISCHARGE CIRCUIT
CONTROL
CIRCUIT
C7535
TLSXC0009EB TLSXC0010EB
● Block Diagram for Switching Type
● Block Diagram for Dropper Type
LAMP POWER SUPPLIES
Using Mercury-Xenon lamps in photometric
applications requires an extremely stable power
supply. We recommend using Hamamatsu power
supplies to obtain full performance from super-quiet
Mercury-Xenon lamps. Hamamatsu provides two
types of power supplies: dropper type and switching
type. Dropper type power supplies feature extremely
high stability. Switching type power supplies have
less stability but offer advantages such as light weight
and high cost performance. Select the type that
meets your application.
Hamamatsu also manufactures various types of
OEM power supplies. Please feel free to consult us
with your specific needs.
ACCESSORIES
—
C4251
144 × 176 × 280
250 × 340 × 350
220 × 150 × 330
150 × 180 × 280
±4
±0.10.1
5
100/118
200/230
100/118
200/230
100/118
350/500
50/75/100/150/200
150/200
50/75/100
350
10
Type No.
Control
Method
Suitable
Lamps
(W)
Weight
(kg)
Dimensions
W × H × D
(mm)
Discharge
Current Stability
(at +25 °C)
Ripple (p-p)
Max. (%)
Drift
Max.(%/h)
Input
(V ac)
4
5
15
Dropper
Type
Switching
Type
B
AExcluding projection parts.
BThe dropper type power supplies are used in conjection with the C4251 or C4339 Trigger Unit (option).
These power supplies use a trigger mode in which a positive high voltage is applied to the anode; so use care concerning the insulation for the anode.
Trigger
Unit
A
Start
Method
Manual
Manual
NOTE
Light weight,
for general purpose
High stability,
with time counter
High stability
NOTE:
C4251 Manual
C4339 Auto
C4339 Auto
C6979
C6979-10
C7535
C7535-10
C4338
C2577
C2578
9
[]
E4169 / E4168
E7536
Unit: mm
60
F
12
LAMP
E
30
30
ANODE TERMINAL
COOLING FIN
20 FUSED SILICA WINDOW
COOLING FIN
CATHODE TERMINAL
B
D
60
30 50
C
A
30
E2419
E2420
A
50
65
B
56
95
C
110 to 140
90 to 120
D
24
43
E
50
65
F
35
42.5
Weight
1.1 kg
1.2 kg
TLSXA0011EA
E7536 (For 150 W, 200 W Lamps)
ELLIPSE REFLECTORS
Hamamatsu also provides the Ellipse Reflectors developed
for SQ Xenon/SQ Mercury-Xenon lamp (cartridge type).
Stable light output will be obtained without any adjustment
of the optical axis till the end of lamp life. The arc point of
Hamamatsu SQ Xenon/SQ Mercury-Xenon lamps has ex-
cellent stability. Therefore, cartridge type SQ lamps
(trouble-free optical axis for lamp exchange) can be em-
ployed. It will be able to be applicable for wide variations
like UV curing and etc. Hamamatsu can offer wide varia-
tion in its options for your applications.
100
COOLING FAN
FOCUS LENS
BACK AND FORTH
ADJUSTMENT
SCREW
M3 HEX SOCKET
HEAD BOLT
M37 P=1
OUTPUT
LENS
( 30)
50
140
280
510
60
77
5 100 5
78
39
78
39
FRONT VIEW
BOTTOM VIEW
SIDE VIEW
LAMP
RIGHT-LEFT
ADJUSTMENT
SCREW
M3
HEX
SOCKET
HEAD BOLT
SIDE COVER
MOUTING
SCREW
4-M3 HEX
SOCKET
HEAD BOLT
SIDE COVER
(REMOVE THIS
COVER WHEN
REPLACING LAMP)
LAMP
VERTICAL
ADJUSTMENT
SCREW
MIRROR BACK
AND FORTH
ADJUSTMENT
SCREW
M4
4-M4
PLASTIC FEET ARE ATTACHED
TO THE BOTTOM OF THE UNIT
BUT CAN BE REMOVED TO USE
THEIR HOLES FOR INSTALLATION
OF THE LAMP HOUSING.
TLSXA0083EA
E2419 (For 75 W, 100 W Lamps), E2420 (For 150 W, 200 W Lamps)
LAMP HOUSINGS
For simple and safe use of lamps, Hamamatsu provides lamp
housings that give optimal performance in terms of light
output stability, efficiency and life.
There are three types of lamp housings: the E7536 (for 150 W
and 200 W lamps) is designed to improve handling, while the
E2419 (for 75 W and 100 W lamps) and E2420 (for 150 W
and 200 W lamps) feature simplified configurations.
The E7536 ensures excellent lamp stability and high output of
collimated light by means of the built-in reflecting mirror and exit
lens. A built-in interlock function, lamp starter and air cooling
fan enhance operator safety. The temperature within the
lamp housing is held below 40 °C. Moreover, 3-axis adjusting
screws are provided on the outside of the housing to allow
simple optical-axis alignment, making it really easy to use.
Simplified type E2419 and E2420 lamp housings are
compact and ideal for experimental setups. These lamp
housings can be readily mounted on a commercially available
optical stand.
When a lamp is used with an elliptic reflector, a different
type of power supply may be required. Please consult
our sales office for a suitable power supply.
10
Surface Magnetic
Flux Density
(10-3 Tesla)
Type Distance
(mm)
Position
(Direction)
Magnet
Example
TDK Co.
FB3G
D10-5
(10 mm dia.
5 mm thickness)
TDK Co.
FB3G
D15-7
(15 mm dia.
7 mm thickness)
See Fig. 1
See Fig. 2
38±1.0
55±1.0
9.5 to 10.5
12 to 12.5
75 W
100 W
150 W
200 W
TIP-OFF
TIP-OFF
TIP-OFF
CATHODE
(-)
CATHODE
(-)
ANODE
(+)
ANODE
(+)
ORIENTATION FOR
HORIZONTAL OPERATION
ORIENTATION FOR
VERTICAL OPERATION
TLSXC0012EA
Unit: mm
Unit: mm
TLSXC0011EA
Fig.2
Fig.1
NOTE : “DISTANCE” in the table defines the distance between the center of arc
and the surface of a magnet.
UP
(TOP VIEW)
NMAGNET
S
38 ± 1.0
(SIDE VIEW)
NS
UP
(TOP VIEW)
N
MAGNET
S
55 ± 1.0
(SIDE VIEW) NS
5 ± 1.0
It is necessary to use an adequate magnet and set it at correct
position in order to get the best performance of lamps, according
to the following table.
HANDLING PRECAUTIONS
(Read before using)
Installation Precautions
1. Always handle the lamp with protective cover in
place.
High pressure gas (approx. 1 MPa at room temperature,
approx. 4 MPa during operation) is contained in the lamps.
Inflicting strong shocks to the lamp or scratching of the
surface of the glass bulb may cause the bulb to burst,
causing danger from flying glass fragments.
When handling lamps, always wear a long sleeved shirt
and gloves for protection as well as a face protector.
This protective cover is also necessary when replacing
lamps; so store it for future use. (Refer to item 8.)
2. Never touch the glass portion of a lamp with bare
hands.
Lighting a lamp with dust or fingerprints on it causes print
marks and loss of bulb transmittance, thus lowering the
light output and the mechanical strength of the glass bulb.
To remove dust and fingerprints, wipe the bulb off using
cotton or gauze moistened with high-quality alcohol or
acetone, and throughly wrung out. Use care not to apply
and strong shocks.
3. Install the lamp correctly.
(A) Correct polarity of the lamp is important. Even mo-
mentary reversal of the polarity will damage the cath-
ode, causing failure of the lamp and will void the war-
ranty. When installing the lamp vertical to the ground,
insure that the indication marking which denotes “UP”
is in the proper position. This indication marking can
be found on the anode side of the metal base, and
also on the plastic lamp protector.
(B) When installing the lamp in the horizontal position
make sure the “tip-off” is parallel to the ground. Ad-
just the arc point of the lamp so that the discharge
stays along the center line of both electrodes. This
can be accomplished by the use of a magnetic field.
HANDLING PRECAUTIONS
11
Operational Precautions
4. Use caution concerning the high temperature
and high voltage.
These lamps start discharge at high triggering voltage of
20 kV. Be sure insulation is sufficient to prevent danger
of electrical shock. During operation and immediately af-
ter, the lamp is extremely hot, so never touch with the
hands or place them close to highly combustible mate-
rial.
5. Caution concerning ultraviolet radiation.
These lamps radiate ultraviolet rays which are harmful to
the eyes and skin. Avoid looking directly at a lamp or al-
lowing its light to fall directly on the skin, as there is dan-
ger of burning injury.
6. Always observe the rated values.
The rated operating current for these lamps is specified
(refer to pages 6, 7.). If used outside the specified range,
operation will become unstable and the life will be short-
ened drastically. Operation outside the rated values will
void the Hamamatsu warranty. The 350 W type and 500
W type requires forced air cooling.
7. Replace the lamp after the total number hours
of operation exceeds the average life plus 500
h, or when the inner walls of the bulb become
extremely blackened.
When the total number of hours operation has exceeded
the average life plus 500 h, vaporization of the electrodes
and sputtering on the bulb causes progressive darken-
ing, lowering the lamp’s heat radiation and increasing the
interior temperature and pressure of the lamp to danger-
ous levels that could lead to breakage. Thus, when either
condition is observed, replace the lamp immediately.
Removal Precautions
8. Handle used lamps with the protective cover.
When removing a lamp from the lamp housing, wait until
cools. Since high-pressure gas is contained in the lamp,
rough handling can cause the lamp to shatter; therefore
handle used lamps as carefully as new lamps. Then en-
close it to the protective cover as it was.
The Mercury-Xenon Lamp should be discarded through
an approved waste disposal company, or should be re-
turned to any Hamamatsu sales representative with
reparked in its original packing (or in an equivalent se-
cure package).
CONCERNING LAMP HOUSINGS
Consider The Following Points When Designing
A Lamp Housing
A. A lamp housing should always have a sturdy
cover.
High pressure gas (approx. 1 MPa at room temperature,
approx. 4 MPa during operation) is contained in the lamps.
Lamp housings should always have a sturdy cover in
anticipation of the possibility of the lamp shattering for
any reason.
B. Do not fasten lamps at both ends when install-
ing.
The glass bulbs of lamps expand from heat during op-
eration. Use a flexible fitting at one end (normally the
anode side) and construction that can absorb the heat
expansion.
C. When focusing the light, take care to avoid ex-
cessively high internal lamp operating tempera-
tures.
When focusing the light from a lamp with a mirror, etc.,
the lamp operating temperature can become extremely
high if there is a focal point on the bulb wall or electrode.
Use care concerning operating temperature when using
such a mirrors, etc.
D. Use caution concerning high operating tem-
peratures.
Maintain the lamp surface temperature at less than 750 °C
(1382 °F) and the metal base surface temperature (an-
ode side) at less than 200 °C (392 °F). (The temperature
at the anode is normally higher than at the cathode.)
If the lamp operating temperature exceeds these upper
limits, oxidation of the electrode wire as well as exces-
sive consumption of electrodes and filled gas occur and
greatly shorten the lamp life. The pressure inside the lamp
may also increase excessively and cause the lamp to
shatter. Leave allowance for the heat capacity of the lamp
housing for efficient heat radiation.
Forced air cooling with a fan is necessary for the 350 W
and 500 W lamps, so take care to ensure that the fan
does not stop during operation and for 3 to 5 minutes
after turning the lamp off. Convection currents in the xe-
non gas filled in the lamps increase considerably when a
strong breeze from a fan blows directly on a lamp, lower-
ing the light output stability, so position the fan carefully.
12
E. Install sufficient high voltage insulation to avoid
leakage of trigger high voltage.
Use high quality insulation materials and maintain adequate
insulating distances since the trigger voltage reaches 20
kV to 30 kV upon start-up. A 1 cm (3/8”) air gap will with-
stand only about 10 kV before arc discharge occurs. The
power supply output should be delivered with a high-volt-
age (more than a few tens kV) and heat resistant, non-
flammable cable, which should be as short as possible.
Make sure there is no contact between the power supply
cable and the metal chassis of the lamp housing. Wher-
ever the possibility of contact exists, a high quality silicon
insulating material should be employed.
F.Ensure the lamp holder is not oxidized.
Ensure the lamp holder is not oxidized. If it is oxidized,
there will be heating in the lamp holder and the radiant
intensity may become unstable due to the lack of contact.
When it is oxidized, the lamp holder should be replaced or
the oxide should be removed.
WARNING
Do not look at the lamp without proper eye protection while in operation.
•UV (ultraviolet) rays can damage the eyes and permanently may impair eyesight.
The lamp radiates UV rays which are harmful to your skin.
Proper skin protection must be worn or avoid any direct exposure.
•UV ray may injure skin exposed to it.
Do not place flammable material near the lamp when in operation.
•Placing the operating lamp near flammable materials may cause a fire.
The lamp reaches high temperature while in operation, and shortly after turn-off, use
care when touching the lamp.
•High temperature lamps will cause burns.
The lamp has high internal gas pressure, do not subject it to shock, stress or scratches.
These stresses may result in the explosion of the envelope.
The lamp must be installed in proper housing before operation.
•If broken, flying glass fragments may cause injury.
The power supply to the lamp must be turned off before installation or removal, or any
maintenance.
•Failure to do this may result in electrical shocks, damage to eyesight or skin burns,
etc.
CAUTION
Observe the installation direction and polarity of lamps.
•Incorrect installation may damage the lamp.
Be sure to use a power supply that provides an optimal current value for the lamp.
•Use of an improper power supply may cause overheating or damage the lamp.
Do not use the lamp in damp locations subject to high humidity, precipitation, or con-
densation.
•Operating the lamp in high humidity may result in electrical shocks or damage to the
lamp.
Always wear a protective mask and garment when installing or removing the lamp.
•If broken, exploding glass fragments may cause injury.
13
WARRANTY
The warranty period will be one year after shipment or specified life time comes first. The area of
warranty is limited to replacement of the faulty lamp. Faults resulting from natural disasters and
incorrect usage will also be excluded from warranty.
14
RELATED LAMPS
For details,refer to the catalogs which are available from our sales offices.
*PATENT : JAPAN Pat. No. 1508827
Metal Halide Lamps
Since Metal Halide Lamps have a flash efficiency approx. 4 times
higher than halogen lamps and xenon lamps, they can produce
an output 4 times higher if power consumption is same. In addi-
tion, the short-arc type is similar to a point light source, making
optical design easy. The short life problem caused by the short
arc has also been solved, thereby achieving a long life of more
than 3000 h in the case of the 575 W type. As their color tem-
perature characteristics are similar to daylight color, exact col-
ors (RGB) can be reproduced.
Metal Halide Lamps are suitable in applications such as over-
head projectors and liquid crystal projectors.
Super-Quiet Xenon Lamps
Hamamatsu is producing Super-Quiet Xenon Lamps as continu-
ous spectrum light sources. The radiation spectral distribution is
continuous over the ultraviolet, visible and infrared ranges, so
these lamps are ideal as light sources for all kinds of photomet-
ric purposes such as spectrophotometers and so on. Depending
on the application, various types of lamps are available from 35
W to 300 W.
Super-Quiet Xenon Flash Lamps
The Super-Quiet Xenon Lamp lineup also includes flash mode
models having compact, small heat generation and good arc sta-
bility. It has the good features for high precision photometry in
better stability of 5 times and longer lifetime of 10 times than
conventional lamps.
Depending on the applications. Hamamatsu can offer SQ type
having excellent stability, built-in reflector type with high output
power, HQ type for general use and 60 W type.
They are also applicable for the light source in high speed cam-
era operation and strobe light source.
TLSX1009E09
MAY 2003 IP
Printed in Japan (1000)
HAMAMATSU PHOTONICS K.K., Electron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
U.S.A.:
Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: usa@hamamatsu.com
Germany:
Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: info@hamamatsu.de
France:
Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 E-mail: infos@hamamatsu.fr
United Kingdom:
Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road Welwyn Garden City Hertfordshire AL7 1BW, United Kingdom, Telephone: 44-(0)1707-294888, Fax: 44(0)1707-325777 E-mail: info@hamamatsu.co.uk
North Europe:
Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: info@hamamatsu.se
Italy:
Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 E-mail: info@hamamatsu.it
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