Electro-optical distance measuring apparatus

Details Electro-optical distance measuring apparatus Electro-optical distance measuring apparatus

1980-04-21

1982-04-20

Punter, William H.

Optics: measuring and testing

By polarized light examination

With light attenuation

250227, G01B 1114, G02B 517

Patent

active

043256384

ABSTRACT:
Electro-optical distance measuring apparatus has a light emitting element for producing a modulated light which is projected through a condenser lens and an objective lens. Between the condenser and objective lenses, there is provided a light guide device which comprises a first optical fiber bundle adjacent to the objective lens and a second optical fiber bundle adjacent to the condenser lens. The first and second optical fiber bundles are in end-to-end relationship and the first bundle has a diameter smaller than that of the second bundle.

REFERENCES:
patent: 3269387 (1966-08-01), Wallace
patent: 3305689 (1967-02-01), Leavy, Jr. et al.
patent: 3940608 (1976-02-01), Cissinger et al.
patent: 4065203 (1977-12-01), Goell et al.
patent: 4076376 (1978-02-01), Slaughter
Bedgood et al., "Demountable Connectors For Optical Fiber Systems", Electrical Comm. vol. 51, 1976, pp. 85-91.

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