Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1990-04-03
1991-02-19
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156536, 156645, 156651, 156655, 156663, H01L 21306, B44C 122, C03C 1500, C03C 2506
Patent
active
049941399
ABSTRACT:
An optical device is manufactured by providing a disc-shaped body of a light-conducting material on a plane surface of a disc-shaped carrier body, grinding the light-conducting material mechanically to a thickness which exceeds the desired ultimate layer thickness by at least 50 .mu.m, subjecting the light-conducting material to alternate tribochemical and mechanical polishing treatments until a thickness is obtained which exceeds the desired ultimate layer thickness by approximately 10 .mu.m, and subsequently polishing the light-conductor body tribochemically until the desired layer thickness is obtained.
REFERENCES:
patent: 4285714 (1981-08-01), Kirkpatrick
patent: 4310583 (1982-12-01), Baker et al.
patent: 4436580 (1984-03-01), Boyd et al.
patent: 4554717 (1985-11-01), Vig et al.
Biermann Udo K. P.
Haisma Jan
Spierings Gijsbertus A. C. M.
Van Der Kruis Franciscus J. H. M.
Bartlett Ernestine C.
Powell William A.
U.S. Philips Corp.
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