15 November 1979 Unique Optical System For Conversion Of Existing Photometers Into Scanning Microphotometers
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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.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas H. Bulpitt, Thomas H. Bulpitt, Richard A. Walker, Richard A. Walker, } "Unique Optical System For Conversion Of Existing Photometers Into Scanning Microphotometers", Proc. SPIE 0196, Measurements of Optical Radiations, (15 November 1979); doi: 10.1117/12.957964; https://doi.org/10.1117/12.957964

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