Ocular lens measuring apparatus

Details Ocular lens measuring apparatus Ocular lens measuring apparatus

1995-10-18

1997-08-12

Pham, Hoa Q.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

356328, G01B 900

Patent

active

056571160

ABSTRACT:
An apparatus for measuring the optical characteristics of an ocular lens includes a first measuring system for detecting light transmitted through the ocular lens and through a predetermined optical path for obtaining refractivity information of the ocular lens, and a second measuring system for detecting light transmitted through the ocular lens and through an optical path branching off from the predetermined optical path of the first measuring system and obtaining transmittance information of the ocular lens.

REFERENCES:
patent: 3771879 (1973-11-01), Chambu et al.
patent: 4125328 (1978-11-01), Suga
patent: 4609287 (1986-09-01), Kohayakawa
patent: 4826315 (1989-05-01), Kohayakawa
patent: 5231460 (1993-07-01), Kohayakawa
patent: 5339151 (1994-08-01), Shinn
patent: 5489978 (1996-02-01), Okumura et al.

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