Method of manufacturing optical element

Details Method of manufacturing optical element Method of manufacturing optical element

1991-06-10

1992-11-03

Woodard, Joye L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65 31, C03B 2300

Patent

active

051603616

ABSTRACT:
A method of manufacturing optical elements which is capable of obtaining optical elements at high accuracy by molding through employment of an optical element molding glass material preliminarily processed to prevent such defects as crack formation or chipping at the corner portions of the molding material which contact dies when the material is charged into the mold. An optical element molding glass material to be employed for the above method is formed with curvatures at boundary portions i.e. corner portions where its cylindrical portion contacts at right angles with its end flat portions by applying chemical etching, heat of a carbon dioxide gas laser or radiation heat to such corner portions. Meanwhile, in the manufacturing process of the optical element in which upper and lower dies and the preliminarily processed molding material are subjected to molding through heating and pressurization in a contacted state at all times, the molding pressure is arranged to be reduced at least one or reduced to zero to provide the optical element at high accuracy.

REFERENCES:
patent: 3843472 (1974-06-01), Toussaint
patent: 4481023 (1984-11-01), Marechal
patent: 4629489 (1986-12-01), Hirota
patent: 5015280 (1991-05-01), Kimoto
patent: 5032160 (1991-07-01), Murata
Patent Abstracts of Japan, 13 402 (C-633) (3750), Sep. 6, 1989.
Patent Abstracts of Japan, 13 595 (C-672) (3943), Dec. 27, 1989.
Patent Abstracts of Japan, 12 70 (C-479) (2917), Mar. 4, 1988.
Patent Abstracts of Japan, 10 120 (C-343) (2177), May 6, 1986.
Patent Abstracts of Japan, 9 124 (M-383) (1847) May 29, 1985.

Affiliated with

Also associated with

Rating

Method of manufacturing optical element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing optical element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing optical element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2047709