Lens testing apparatus and a lens adjusting apparatus

Details Lens testing apparatus and a lens adjusting apparatus Lens testing apparatus and a lens adjusting apparatus

1998-02-27

1999-12-07

Pham, Hoa Q.

Optics: measuring and testing

Lens or reflective image former testing

Optical center, cylinder axis, or prism measuring or...

356400, 2502011, G01B 900

Patent

active

059992514

ABSTRACT:
A lens testing apparatus detects and evaluates inclination of the image plane as caused by decentering of an optical system. The apparatus has an image provider, a plurality of focusing position detectors, and a calculator. The image provider provides an image to a lens system to be tested for decentering. The detectors detect a focusing position on which light rays exiting from the lens system focus. The calculator calculates inclination of the image plane based on the focusing position detected by the detectors.

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patent: 5664243 (1997-09-01), Okada et al.
patent: 5844670 (1998-12-01), Morita et al.

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