Super-Quiet Xenon Lamp Super-Quiet Mercury-Xenon Lamp

GSuper-Quiet Xenon Lamp These are lamps filled with xenon gas that emits "white light" at a high color temperature of 6000 K, which is close to that of sunlight and covers a broad continuous spectrum from the ultraviolet to infrared region (185 nm to 2000 nm). These xenon lamps are ideal as light sources for various types of photometric instruments such as spectrophotometers. 150 W SUPER-QUIET XENON LAMP (L2273) SOLAR RADIATION ON SEA SURFACE (AT ZERO METERS ABOVE SEA LEVEL) SOLAR IRRADIANCE ON SEA SURFACE (mW·cm-2·nm-1) XENON LAMP IRRADIANCE (µW·cm-2 ·nm-1) at 50 cm GNo arc point shift GHigh...

ARC "INSTABILITY (FLUCTUATION)" and "SHIFT" Light source lamps used for high precision photometry must have good arc 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...

STRUCTURE AND OPERATION These lamps have an oval bulb made of quartz glass (silica glass) in which a cathode and an anode face each other. The bulb for superquiet 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...

GDifference in Irradiance by Bulb Material GRadiant Flux Distribution The irradiance differs according to the bulb material. Fused silica transmits light at wavelengths shorter than 240 nm, yet ozone-free silica cuts off light of wavelengths shorter than 240 nm. Select the bulb material that meets your application. The lamps emit a radiant flux distribution uniformly along the horizontal direction. Figure 6: Irradiance Comparison of Different Bulb Materials 150 W Super-Quiet Xenon Lamp L2273 200 W Super-Quiet Mercury-Xenon Lamp L2423 Figure 8: Radiant Flux Distribution (Vertical Lighting) 150...

GLight Output Intensity and Lamp Current GLight Output Intensity and Ambient Temperature The light output intensity of a lamp is proportional to the lamp current. The light output intensity of a lamp also varies with ambient temperature. This is due to the change in light output intensity resulting from the change in gas pressure with temperature. The ambient temperature must be kept constant to ensure stable lamp operation. Figure 10: Light Output Intensity vs. Lamp Current Figure 12: Light Output Intensity vs. Ambient Temperature 150 W Super-Quiet Xenon Lamp L2273 RATED LAMP CURRENT (RECOMMENDED:...

POWER SUPPLY Lamps used as a light source for photometric applications must provide stable light output. To ensure stable lamp operation, the power supply must also provide high stability equal to or better than that of the lamp. Figure 14: Block Diagram of Regulated Power Supply SQ XENON LAMP SQ MERCURY-XENON LAMP STARTER TRIGGER TRIGGER TRANSFORMER SWITCH CONSTANT DC CURRENT POWER SUPPLY MAIN POWER SUPPLY GMain Power Supply Besides supplying the lamp with stable DC power, the main power supply gives the cathode an optimal operating temperature at a specified current. The cathode temperature...

SPECIFICATIONS SUPER-QUIET XENON LAMP Lamp Rating Lamp Current Lamp Voltage Window Material (Transmission Wavelength) (nm) Fused Silica (185 to 2000) Ozone-free Silica (240 to 2000) Light Output Stability Fluctuation Drift (p-p) Typ. Max. (%/h) (%) ±0.5 13.5 Ozone-free Silica (240 to 2000) Fused Silica (185 to 2000) Fused Silica (185 to 2000) Ozone-free Silica (240 to 2000) Fused Silica (185 to 2000) Ozone-free Silica (240 to 2000) Fused Silica (185 to 2000) Ozone-free Silica (240 to 2000) Fused Silica (185 to 2000) Ozone-free Silica (240 to 2000) SUPER-QUIET MERCURY-XENON LAMP Type No. Lamp...

NOTE: ©Power supplies should be used in combination with a starter (sold separately) or lamp housing.

DIMENSIONAL OUTLINES (Unit: mm) 1 Super-Quiet Mercury-Xenon Lamp: L2421 METAL BASE METAL BASE METAL BASE METAL BASE

6 Super-Quiet Mercury-Xenon Lamp: L8706 M5 METAL BASE METAL BASE Applicable Power Supply + Starter + Lamp Housing Combination Super-Quiet Xenon Lamp: L2479, L2480 Super-Quiet Mercury-Xenon Lamp: L2483, L2917, L8288 Applicable Power Applicable A Applicable Lamp Supply Type No. Starter Type No. Housing Type No. See also pages 9 and 12. NOTE: AStarters are sold separately. BTwo types of heatsink fins (7.5 mm and 9 mm diameter) are available to match different lamp metal bases. CHas an internal starter.

POWER SUPPLY Lamps used as the light source for photometric applications must provide stable light output. We recommend using Hamamatsu dedicated power supplies for lamp operation. Using these dedicated power supplies allow extracting the full performance from our super-quiet lamps. Select the power supply that matches your application. We also provide OEM power supplies, so please feel free to consult us. Left: C8848, C8849 Right: Starter C4251 (Sold Separately) Control Method Suitable Lamp Rating (W) 35 to 75 (Xenon) 50 to 100 (Mercury-Xenon) 35 to 75 (Xenon) C8848-00-57 50 to 75 Switching...

LAMP HOUSING Hamamatsu provides various lamp housings to make our lamps easier to use. Besides using a stable power supply, it is also essential to use a proper lamp housing to extract full performance from the lamps and obtain stable light output. Four models of lamp housings are currently available. Among these, the E7536 and E10180 are designed for high accuracy yet easier handling, while the E2419, E2420 and E5421 feature simplified designs. The E7536 and E10180 have an internal reflecting mirror and light output lens to provide a collimated light beam with high intensity. The built-in interlock...