Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1992-12-22
1996-01-30
Hellner, Mark
Optics: measuring and testing
Range or remote distance finding
With photodetection
356 302, 384 14, G01C 308
Patent
active
054884683
ABSTRACT:
A light emitting element and a light receiving element are installed on a wiring board mounted in a housing case. Light emitted from the light emitting element is irradiated on an object to be detected through a first lens installed in the housing case. Light reflected by the object to be detected is received by the light receiving element through a second lens installed in the housing case. The housing case is formed of a grounded conductive material, and the wiring board is formed of a material having a coefficient of linear expansion equivalent to that of the housing case.
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"Design and Fabrication of a Distance Sensor by PSD" Aug. 1990.
"Photodetectors for Auto-Focus Systems", National Technical Report vol. 29, No. 6, Dec. 1983.
"Photo Electrical Switch of Distance Measuring System of MR3" No. 38 Jun. 1989.
Furuta Kouichi
Kawanishi Shinya
Okada Keiichi
Hellner Mark
Sharp Kabushiki Kaisha
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