Positioning apparatus for optical element mounting operation hav

Details Positioning apparatus for optical element mounting operation hav Positioning apparatus for optical element mounting operation hav

1992-12-24

1993-11-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356400, G01V 904

Patent

active

052586235

ABSTRACT:
A positioning apparatus for an optical element mounting operation includes a transparent substrate, a light source, an optical element substrate, a measuring unit, a manipulator, and a control unit. At least one positioning lens and an optical system are formed on a surface of the transparent substrate. The light source emits parallel beams which are vertically incident on the transparent substrate. A plurality of optical elements to be positioned with respect to the transparent substrate, and a positioning light-receiving element for receiving light focused by the positioning lens are formed on the optical element substrate. The current measuring unit measures a current flowing in the positioning light-receiving element. The manipulator moves the transparent substrate with respect to the optical element substrate to perform positioning of the former with respect to the latter. The control unit controls the manipulator on the basis of a current measured by the current measuring unit to perform positioning of the transparent substrate with respect to the optical element substrate.

REFERENCES:
patent: 4333044 (1982-06-01), Blitchington
patent: 5155370 (1992-10-01), Osawa et al.
M. Oikawa et al., "Proceedings of SPIE-The International Society for Optical Engineering" published by Miniature Optics and Lasers, Jan. 11-12, 1988, pps. SPIE vol. 898/3-SPIE vol. 898/11.

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