xenon flash lamp xenon flash lamp

15 W xenon flash lamps

These 15 W xenon flash lamps integrate a reflector to deliver higher output, yet these lamps are also compact and generate less heat. The built-in reflector is available with a choice of converging type and collimating type. The converging type is ideal for applications where the output light must be guided to an optical light guide.


Spectral distribution (Typ.)

Emission pulse waveform (L4633)(Typ.)

Life characteristics (L4633)(Typ.)

Directivity (light distribution)


Parameter L4633 L4634 Unit
Built-in reflector Converging type Collimating type
Window material Borosilicate glass
Side tube material Borosilicate glass
Spectral distribution 240 to 2500 nm
Main discharge voltage range 500 to 1000 V
Recommended main discharge voltage range 700 to 1000 V
Maximum lamp input energy (per flash) See operating condition examples mJ
Maximum repetition rate (*1) 100 Hz
Maximum average lamp input (continuous) See operating condition examples W
Light output stability (*2) Typ. 0.5 % CV
2.9 % p-p
Max. 1.0 % CV
5.0 % p-p
Guaranteed life (*3) 1.4 × 108 to 5 × 108 flashes
Trigger voltage 5 to 7 kV p-p
Cooling method Not required
Operating temperature range +5 to +40
Storage temperature range -40 to +90
Operating humidity range Below 85 % (no condensation)
Storage humidity range Below 95 % (no condensation)
Trigger socket (sold separately) (*4) E4370-01

*1: To ensure highly stable operation, 10 Hz or more repetition rate is recommended.
*2: Light output stability (at a repetition rate of 10 Hz or more)
     Light output stability (% CV) = light output standard deviation / average light output × 100
     Light output stability (% p-p) = (maximum light output – minimum light output) / average light output × 100
*3: Measured with a Hamamatsu Si photodiode S1336-8BQ. The life is defined as the time at which the light output at 190 nm to 1100 nm decreases to 50 % of the initial output level or the light output fluctuation exceeds the specified maximum value when the lamp is operated at a lamp input energy of 0.15 J to 0.05 J.
*4:See options for information on trigger socket.

Operating condition examples

Main discharge capacitance
Main discharge voltage
Maximum lamp input energy (per flash) (*5)
Maximum repetition rate (*6)
Maximum average lamp input (continuous) (*7)
Power supply
(sold separately) (*8)
0.3 1000 150.0 100 15.0 C13316-03
700 73.5 100 7.4
0.2 1000 100.0 100 10.0 C13316-02
700 49.0 100 4.9
0.1 1000 50.0 100 5.0 C13315
700 24.5 100 2.5

*5: Maximum lamp input energy (per flash) (J)
     E = 1/2 × C × V2 C: Main discharge capacitance (F), V: Main discharge voltage (V)
*6: To ensure highly stable operation, 10 Hz or more repetition rate is recommended.
*7: Maximum average lamp input (continuous) (W)
     P = E × f E: Maximum average lamp input energy (per flash) (J), f: Repetition rate (Hz)
*8:See options for information on power supplies.

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Trigger socket E4370-01

Hamamatsu provides trigger sockets specifically designed for xenon flash lamps. These trigger sockets are integrated with a high-voltage transformer, voltage-divider resistors, and capacitors in the same compact housing thus reducing the hassle of drawing up circuit and device designs.

Please see the catalog for details[4.3 MB/PDF]

Power supplies C13315 / C13316 series

Hamamatsu provides power supplies specifically designed to bring out maximum performance of xenon flash lamps. These are switching power supplies with a built-in high-speed charging circuit and discharge stop circuit. Despite their compact size and large capacity, the power supplies ensure highly stable xenon flash lamp operations.

Please see the catalog for details[4.3 MB/PDF]

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