Optical head

Details Optical head Optical head

1990-09-25

1992-04-07

Ben, Loha

Optical: systems and elements

Lens

With support

359823, 369 4416, G02B 702

Patent

active

051033453

ABSTRACT:
In a reflecting plate provided on an optical head arranged to be movable at least in a predetermined direction within a device such as a compact-disk player and the like, a multiplicity of irregularities are formed on a surface of the reflecting plate for causing diffused reflection of light. Then, since the light is diffusely reflected at the edge portions of the reflecting plate in the predetermined direction, an area, in which a linear relation exists between movement of the optical head and the output level of an amplifier signal in accordance with the movement can be wider as compared with the case in which these irregularities are not formed.

REFERENCES:
patent: 4799766 (1989-01-01), Estes
patent: 4835646 (1989-05-01), Kurosawa et al.
patent: 4868377 (1989-09-01), Nishikawa
English Language Abstract of Japanese 62-162241.
English Language Abstract of Japanese 63-214925.

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