Method for grinding lens

Details Method for grinding lens Method for grinding lens

2005-05-24

2005-05-24

Nguyen, Dung Van (Department: 3723)

Abrading

Abrading process

Glass or stone abrading

C451S059000, C451S037000

Reexamination Certificate

active

06896594

ABSTRACT:
A method for grinding lens is provided in the invention. First, a lens which has an optical surface and a surface-to-be-grinded is placed on a polishing pad. Next, cover up the lens with a fluid guiding tube wherein the fluid guiding tube has a fluid inlet and a fluid outlet with the fluid outlet being situated at the top of the polishing pad for accommodating the lens. After that, a fluid is introduced into the fluid guiding tube through the fluid inlet and is discharged from the fluid outlet, and the flow of the fluid follows the normal direction of the optical surface and applies force evenly thereon. Last, the polishing pad is moved along with the tangent line of its surface for the surface-to-be-grinded to be grinded.

REFERENCES:
patent: 4598502 (1986-07-01), Lombard
patent: 5906532 (1999-05-01), Nakajima et al.
patent: 6276998 (2001-08-01), Sommer et al.

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