The ASB-W-020 is a complete light source assembly with a tungsten-halogen lamp that emits in the 300 to 2500 nanometer (nm) wavelength region. It has been designed to transfer the maximum possible illumination to a variety of fibers. The tungsten-halogen lamp of the ASB-W-020 is a near blackbody source of light with a built-in fused silica lens that focuses the light to the fiber. Figure 1 shows blackbody spectral distributions at various color temperatures in Kelvin (K). The ASB-W-020 spectral distributions resemble those of Figure 1 out to about 2500nm, beyond which the transmission of the fused silica lens limits the output.



In addition to the 20 Watt tungsten-halogen lamp (SP # ASB-W-020B), the ASB-W-020 features a lamp housing and a current regulator to assure a stable output. The housing contains an adjustable lamp mount. A variety of flanges allow the mounting of different fiber terminations, from a single fiber to bundles.



The 20 Watt tungsten-halogen lamp used in the ASB-W-020 has a nominal color temperature of 3100 K and the regulated power input assures an average life of 2000 hours.



The power supply provided with the ASB-W-020 is a wall plug-in type.



The power supply provided with the ASB-W-020 is a wall plug-in type.









Feature Value



Lamp: Tungsten-halogen

Power: Wall transformer, 120 VAC, 50/60 Hz to 24 VDC at 2.0 amps.

220 VAC version available

Current Regulation: Built-in, ± 0.4%

Color Temperature: 3100°K

Bulb Life: 2,000 hrs. average (nominal)

Spectral Distribution: Near blackbody (see Figure 1)

Housing: Aluminum, forced air cooled,

Limited focus adjustment

Connector: SMA Fiber connector

Options: Spare lamp ASB-W-020B

Mounting flange for 10mm fiber bundle

Optical bench mounts

Specify FC, ST or CS for specific fiber couplers.

Warranty: One year

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