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Hamamatsu Super-quiet Mercury-xenon Lamp, 50 W, 14 V, 500 h Guaranteed Life, 9 g Weight - L2421

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Super-quiet Series Mercury-xenon Lamp

50 W, Spectral distribution : 185 nm to 2000 nm, 9 g

Please note that Hamamatsu Lamps are made to order with an approximate 2 - 3 month lead time.

Hamamatsu Part Number: L2421

SPECIFICATIONS

Product Name: Mercury-xenon Lamp
Lamp Rating: 50 W
Arc Length: 1 mm
Lamp Current: 3.5 +/- 0.5 A
Lamp Voltage: 14 V
Window Material: Fused Silica
Spectral Distribution (Short): 185 nm
Spectral Distribution (Long): 2000 nm
Light Output Stability Drift Typ.: +/- 0.5 %/h
Light Output Stability Fluctuation (p-p) Max.: 2 %
Guaranteed Operation Life: 500 h
Average Life: 1000 h
Orientation: Vertical +/-15 or Horizontal +/-15 degree
Cooling Method: Convection Cooling
Supply Voltage Min.: 50 V dc
Trigger Voltage: 15 kV
Weight: 9 g

Xenon Lamp

Xenon lamps emit a continuous spectrum, ranging from the UV to visible to infrared, with high luminance and high color temperature. Hamamatsu lamps employ a high-performance cathode, so they maintain a stable arc point even after many hours of use unlike conventional lamps. Ideal for photometric equipment such as spectrophotometers, and other applications where high-precision measurement lamps are necessary.

ARC POINT "INSTABILITY (FLUCTUATION)" AND "SHIFT"

Light source lamps used for high precision photometry must have good arc emission point stability. However, cathodes used in conventional lamps have two shortcomings in terms of arc stability. One problem is that the arc emission point shifts intermittently due to inadequate electron emission from the cathode. The other problem is that the arc point shifts a little at a time due to the cathode tip wear that occurs with operating time as the lamp ages. Hamamatsu super-quiet lamps employ a high performance "BI (Barium-Impregnated) cathode" developed totally in-house that eliminates the above problems to deliver extremely high stability. This durable cathode exhibits no wear at the cathode tip over operating time and the arc point does not shift. So there is no need to realign the optical system until the time finally comes when the lamp must be replaced.

STRUCTURE AND OPERATION

These lamps have an oval bulb in which a cathode and an anode face each other. The bulb for super-quiet xenon lamps is filled with high-purity, high-pressure xenon gas. The bulb for super-quiet mercury-xenon lamps is filled with a mixture of high-purity, high-pressure xenon gas and high-purity mercury. The lamps emit light by arc discharge. The lamps are installed vertically or horizontally with the anode at the upper side (some types of lamps are only installed vertically) and operate on DC (when the specified voltage is supplied across the anode and cathode, the lamp forms an arc discharge). After the lamp lights up, the light output intensity varies until the gas pressure inside the bulb reaches thermal equilibrium. It takes several minutes to reach the maximum light output intensity. During lamp operation, the bulb wall temperature rises above 500 °C and the gas pressure inside the bulb increases to approximately 4 MPa which is 4 times higher than when the lamp is not operating.

SUPER-QUIET MERCURY-XENON LAMPS

Mercury-xenon lamps produce high radiant energy especially in the UV region due to an optimal mixture of mercury and xenon gas. These lamps possess features of both xenon gas and mercury discharge lamps. The spectral distribution includes a continuous line spectrum ranging from UV to infrared of the xenon gas and strong mercury line spectra in the UV to visible region. Compared to xenon lamps, the radiant spectrum in the UV region of mercury-xenon lamps is sharper in width and its peak is higher in intensity. These features make mercury-xenon lamps ideal as UV light sources.

APPLICATIONS

  • Wafer inspection system
  • Semiconductor photolithographic equipment
  • Fluorescent microscopy
  • Blood analyzer
  • UV irradiation equipment, etc.

FEATURES

  • No arc point shift
  • High stability
  • Super-quiet xenon lamp:

      - Fluctuation (p-p) 0.2 % Typ.
                                   1.0 % Max.
      - Drift                    ±0.5 %/h Typ.

  • Super-quiet mercury-xenon lamp:

       - Fluctuation (p-p) 0.5 % Typ.
                                     2.0 % Max.
       - Drift                    ±0.5 %/h Typ.

  • Long life
  • Wide lamp lineup starting from low wattage input
  • High brightness point light source
  • High color temperature: 6000 K (Super-quiet xenon lamp)
  • High UV light irradiation intensity (Super-quiet mercury-xenon lamp)

APPLICATIONS

  • Spectrophotometer
  • Liquid chromatograph
  • Fluorospectrophotometer
  • Microscope light source
  • Color analyzer, color scanner
  • Solar simulator, etc.

SUPER-QUIET XENON LAMP LINE-UP SPECIFICATIONS

Type / Part No. Lamp rating (W) Arc length (mm) Lamp current (A dc) Lamp voltage (V dc) Window material (Spectral distribution) (nm) Drift Typ.(%/h) Fluctuation (p-p) Max.(%)
L2173 35 1.0 3.5 ± 0.2 11 Fused silica (185 to 2000) ±0.5 1.0
L14284 Low ozone fused silica (185 to 2000)
L2174 75 1.3 5.4 ± 0.5 15 Fused silica (185 to 2000) 1.0
L2174-01
L2174-02
L14285-01 Low ozone fused silica (185 to 2000)
L14285-02
L10725 1.0 5.7 ± 0.3 13.5 Fused silica (185 to 2000)
L10725-01
L10725-02
L11307 100 1.3 7.0 ± 0.5 15 Fused silica (185 to 2000) ±0.5 1.0
L2175 150 2.5 7.5 ± 0.5 19 Fused silica (185 to 2000) ±0.5 1.0
L2273 2.0 8.5 ± 0.5 17
L14286 Low ozone fused silica (185 to 2000)
L11033 Fused silica (185 to 2000)
L14287 Low ozone fused silica (185 to 2000)
L2479 300 3.0 15.0 ± 1.0 20 Fused silica (185 to 2000) ±0.5 1.0

ADDITIONAL SPECIFICATIONS

Type / Part No. Guaranteed life (h) Average life (h) Orientation (degree) Cooling method Supply voltage Min. (V dc)  Trigger voltage (kV) Weight (g)
L2173 1000 2000 Vertical ±15 or horizontal ±15 Not required 50 15 12
L14284
L2174 1000 2000 50 15 14
L2174-01 13
L2174-02 19
L14285-01 13
L14285-02 19
L10725 2000 3000 15
L10725-01 13
L10725-02 19
L11307 1500 2500 50 15 15
L2175 1200 2500 65 20 44
L2273 1800 3000
L14286
L11033 3000 4000
L14287
L2479 1000 2000 Forced air cooling 80 25 69

PLEASE SEE OUR ADDITIONAL IMAGES TAB FOR FURTHER TECHNICAL INFORMATION AND DIMENSIONAL OUTLINES.

Additional Hamamatsu Lamps Available:


  • Model: L2421
  • Manufactured by: Hamamatsu

Additional Images