Optical mouse

Details Optical mouse Optical mouse

1986-06-23

1988-06-14

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

178 18, 250221, G09G 100

Patent

active

047515058

ABSTRACT:
An optical mouse 100 wherein light emanating from the light source 106 is reflected off an optical pattern pad and is placed such tha a lens 120 at a predetermined distance from the optical pad focuses the light directly onto an inverted integrated circuit 124 mounted on and through a hole 126 in a printed wiring board 118, the integrated circuit being housed in a clear plastic package. The path from the lens to the integrated circuit package provides an optical guide 122 such that the distances from the pattern pad to the lens, and from the lens to the optical sensor 128 in the integrated circuit, is fixed upon manufacture and assembly without any further optical adjustment. The inverted state of the integrated circuit chip allows a fixed distance to be provided through the hole in the printed wiring board rather than from above it as is common in the prior art.

REFERENCES:
patent: 4022969 (1977-05-01), McKinlay et al.
patent: 4092532 (1978-05-01), Hayes
patent: 4303914 (1981-12-01), Page
patent: 4354102 (1982-10-01), Burns et al.
patent: 4390873 (1983-06-01), Kirsch
patent: 4409479 (1983-10-01), Sprague et al.
patent: 4631400 (1986-12-01), Tanner et al.
patent: 4686329 (1987-08-01), Joyce

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