Alignment apparatus

Details Alignment apparatus Alignment apparatus

1979-02-23

1981-07-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356401, G01N 2186

Patent

active

042788935

ABSTRACT:
An alignment apparatus by which two points on a first standard line on a first workpiece may be aligned in two regions having as the centers two standard points on a second standard line on a second workpiece optically opposed to the first workpiece and having predetermined areas. The two regions are diamond-shaped. By this, it is possible to reduce the alignment error of the first and second workpieces.

REFERENCES:
patent: 4070117 (1978-01-01), Johannsmeier et al.
patent: 4127777 (1978-11-01), Binder

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