New compact Xenon flash system for zoom lens and close-up photography

Dah Yu Cheng

doi:10.1117/12.163632

25 November 1993 New compact Xenon flash system for zoom lens and close-up photography

Dah Yu Cheng

Proceedings Volume 2000, Current Developments in Optical Design and Optical Engineering III; (1993) https://doi.org/10.1117/12.163632
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The new Intense Point Source (IPS) consists of the regular linear Xenon flash tube mounted in a newly patented Orthogonal Parabolic Reflector (OPR) (Patent No. 5,037,191). The system integrates the radiation for the long linear lamp into a very small point on the order of 3 to 6 millimeters in diameter, with a 90 degree(s) divergent angle. A diffuser and lens systems are employed to provide either a narrow beam of a few degrees for long range photography or a diffused light for close-up photography to provide softened, penetrating lighting. Light intensity distribution data for the new flash system as compared to that of the original Vivitar 285 flash lamp as measured in the Vivitar lab, are presented.

Citation Download Citation

Dah Yu Cheng "New compact Xenon flash system for zoom lens and close-up photography", Proc. SPIE 2000, Current Developments in Optical Design and Optical Engineering III, (25 November 1993); https://doi.org/10.1117/12.163632

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