Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1979-10-05
1981-10-20
Hoffman, James R.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
350167, 350417, 350 9615, 427166, 427167, 428428, G02B 110, G02B 300, C03C 1702
Patent
active
042961432
ABSTRACT:
Microlenses which are easy to handle are produced by providing rotation-symmetrical recesses in a glass plate, depositing vitreous layers by means of a vapor deposition process onto the plate, until the recesses are fully filled up, whereafter the thickness of the coated glass plate is reduced to the original value or to a smaller value. Two lenses produced in this manner are then combined to one lens by placing the embedded lenses on top of one another by means of their flat sides.
REFERENCES:
patent: 3666347 (1972-05-01), Kitano et al.
Franken Adrianus J. J.
Khoe Giok D.
Kuppers Dieter
Briody Thomas A.
Hoffman James R.
Mayer Robert T.
Miller Paul R.
U.S. Philips Corporation
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