Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1997-05-19
1998-09-15
Hellner, Mark
Optics: measuring and testing
Range or remote distance finding
With photodetection
3561411, G01C 308, G01B 1126
Patent
active
058087273
ABSTRACT:
In a vehicle optical radar apparatus according to this invention, assembly properties are improved, limitations on design in mounting the apparatus on a vehicle are canceled, and satisfactory distance measuring performance can be obtained.
In this vehicle optical radar apparatus, a light-emitting element is arranged on one end side of a hollow shaft of a pulse motor. A mirror assembly obtained by integrally molding a light-sending mirror and a light-receiving mirror is fixed to the other end of the hollow shaft. A light-receiving element is arranged at a focus position of the light-receiving mirror. A light-sending beam emitted from a light-emitting element is guided to the light-sending mirror through a light-sending lens and the hollow portion of the hollow shaft to be irradiated outside a case. The light-sending beam reflected by an object is reflected from and focused on the light-receiving mirror and then received by the light-receiving element.
REFERENCES:
patent: 5455669 (1995-10-01), Wetteborn
patent: 5661551 (1997-08-01), Yamabuchi
patent: 5689328 (1997-11-01), Katayama
patent: 5699150 (1997-12-01), Katayama
Hellner Mark
Mitsubishi Denki & Kabushiki Kaisha
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