Unique Optical System For Conversion Of Existing Photometers Into Scanning Microphotometers

Thomas H. Bulpitt; Richard A. Walker

doi:10.1117/12.957964

15 November 1979 Unique Optical System For Conversion Of Existing Photometers Into Scanning Microphotometers

Thomas H. Bulpitt, Richard A. Walker

Proceedings Volume 0196, Measurements of Optical Radiations; (1979) https://doi.org/10.1117/12.957964
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

There are many thousands of luminance photometers in the field - both telephotometers and microphotometers; however very few of these have scanning microphotometric capability. This paper describes a unique optical system that can be field-interchanged with the standard objective lens, without requiring any modification of the photometer's internal optical system, to convert an existing photometer into a high-resolution scanning microphotometer. One embodiment, called the "MicroScannerTM Spatial Scanner", will be described in detail. Used with any standard Pritchard Photometer, this scanner provides variable-speed scanning of a half-inch (12 mm) of object space with field coverage as fine as 0.0001-inches (0.0025 mm) or as broad as 0.39-inches (10 mm). The system features photometric uniformity within ± 0 5% over the entire scan distance, freedom from polarization error, and a half-inch scan distance independent of choice objective lens.

Citation Download Citation

Thomas H. Bulpitt and Richard A. Walker "Unique Optical System For Conversion Of Existing Photometers Into Scanning Microphotometers", Proc. SPIE 0196, Measurements of Optical Radiations, (15 November 1979); https://doi.org/10.1117/12.957964

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