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xenon flash lamp

10 W xenon flash lamps

In spite of using low-cost electrodes, these 10 W xenon flash lamps feature high stability and long lifetime, making them versatile and easy to use in a wide range of applications. The lamp shape is selectable from either a hemispherical or flat window.


Spectral distribution (Typ.)

Emission pulse waveform (L4640)(Typ.)

Life characteristics (L4640)(Typ.)

Directivity (light distribution) (Typ.)


Parameter L4640 L4642 L4644 L4646 L4641 L4643 L4645 L4647 Unit
Lamp shape Hemi-spherical Flat Hemi-spherical Flat Hemi-spherical Flat Hemi-spherical Flat
Arc size 1.5 3.0 1.5 3.0 mm
Window material UV glass Borosilicate glass
Side tube materia UV glass Borosilicate glass UV glass Borosilicate glass Borosilicate glass
Spectral distribution 185 to 2500 240 to 2500 nm
Main discharge voltage range 300 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 0.4 0.5 0.4 % CV
2.5 2.0 2.5 2.0 % p-p
Max. 1.0 0.8 1.0 0.8 % CV
4.5 4.0 4.5 4.0 % p-p
Guaranteed life (*3) 1 × 109 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) E2442 E2418 E2442 E2418

*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 main discharge voltage of 1000 V, main discharge capacitance of 0.2 μF and a repetition rate of 100 Hz.
*4:See options for information on trigger sockets.

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)
0.2 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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Image Data sheet Part no. Product name Arc Size Lamp Diameter Spectral Distribution (Short) Spectral Distribution (Long) Contact Wishlist

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Trigger sockets E2418 , E2442

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.

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.

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