Optics: measuring and testing – Range or remote distance finding – Triangulation ranging to a point with two or more projected...
Patent
1994-08-02
1997-03-04
Engel, James
Optics: measuring and testing
Range or remote distance finding
Triangulation ranging to a point with two or more projected...
1563045, 156305, B32B 3100
Patent
active
056085133
ABSTRACT:
A range finding device for automatic focussing can be accurately assembled and has a good external appearance. The range finding device includes an optical lens block having coupling members projecting from the lenses, which further include a protrusion and side walls formed on both sides of the protrusion which are taller than the protrusion. The length of the protrusion is shorter than width of the side walls. The protrusion is partly constricted by a recess portion to form a constriction portion. The range finding device further includes an optical waveguide case having a pair of windows formed on an upper surface and a pair of coupling members formed on both sides of the windows, which further includes a fitting surface that fits to a bottom surface of the coupling member, a pair of protrusions standing on both ends of the fitting surface between which the side walls of the coupling member are inserted, and a liquid pool formed as a shallow groove on the fitting surface.
REFERENCES:
patent: 4868722 (1989-09-01), Haraden
Scientific Honeyweller, vol. 3, No. 1, Mar. 1982 "Electronic Focus for Cameras" pp. 1-13.
Minolta Techno Report Special Issue, 1986, Automatic Assembly System for AF Sensor Module, by J. Shinya et al. pp. 49-52.
Minolta Techno Report Special Issue, 1986, AF Sensor Module by T. Karasaki, pp. 40-48.
Izumi Akio
Komatsu Sachiaki
Engel James
Fuji Electric & Co., Ltd.
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