Dc power supply for gaseous discharge lamps
Direct current power supply for gaseous discharge lamps
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Direct current power supply for gaseous discharge lamps
Tungsten strip lamps spectral radiance calibration, discussing accuracy requirements for radiation constants, wavelength and black body temperature
Anodes heat transfer in xenon short arc lamps
Optical parametric noise from barium sodium niobate crystal pumped at 4358 A by compact source mercury lamp
Two-bulb switchable pulsed spectral lamp with Cs and Xe for optical pumping studies
Circuit limits lamp current, replacing the series current-limiting resistor.
Development of ultraviolet resonance lamp with improved transmission of radiation
Starting circuit design for initiating and maintaining arcs in vapor lamps
Use of incandescent lamps to measure optical and detector drifts in photoelectric spectrometers
Xenon resonance lamp with high spectral purity, discussing construction, life and refilling ease
Sapphire windowed argon filled tungsten ribbon filament lamp in vacuum UV for application in photomultiplier quantum efficiency calibration
The principal occupational health problem generally associated with high intensity arc lamps results from exposure of the eye and skin to ultraviolet radiation. Occasionally, the chorioretinal burns are of concern. The eye is generally more susceptible than the skin to injury from high intensity optical radiation sources whether ultraviolet, visible or infrared. Recent developments in technology have shown that some high intensity optical radiation sources which have output parameters greatly different from those encountered in the natural environment present a serious chorioretinal burn hazard.
Five commercially available clothing materials, selected for their high cutting resistance, high strength, light weight and pliability, were tested by exposing them to exploding lamps located less than 60 cm (2 ft) away. Face shield material tested initially was commercial high-strength polycarbonate plastic.
Rugged lamp used by miners is adapted for firefighters by utilization of smaller, rechargeable 3-hour-life gel-cell battery. Lighter, maintenance free unit can be clipped to outer clothing for convenience. Small monitor circuit indicates need to recharge battery.
Metal/halide and similar gas-discharge lamps are powered from low-voltage dc source using small efficient converter. Converter is useful whenever 60-cycle ac power is not available or where space and weight allocations are limited. Possible applications are offshore platforms, mobile homes, and emergency lighting. Design innovations give supply high reliability and efficiency up to 75 percent.
Reusable infrared reflector maintains filament temperature and reduces power requirements. Fixed installed over light bulb directs energy formerly lost back to lamp filament. This energy aids electric current in heating filament, allowing lower-wattage bulb to produce same amount of light as higher-wattage bulb in ordinary fixture.
A high-intensity xenon arc lamp having a plurality of separate anodes axially disposed in a symmetrical pattern which spaced a discharge gap from a common cathode is presented.
Interconnection tabs in a nine-solar-cell array have been soldered simultaneously with radiant heat. Cells and tabs are held in position for soldering by sandwiching them between compliant silicone-rubber vacuum platen and transparent polyimide sealing membrane. Heat lamps warm cells, producing smooth, flat solder joints of high quality.