Patent ID: 6806990
Filing Date: 2004-10-19
Classification: B32B,C03C,G02B,Y10T

Abstract:
A method for producing an optical device by bonding optical elements each other without using adhesive wherein the optical elements are bonded to each otherby using optical elements in which the relation between linear expansion coefficients &agr;1 and &agr;2 (/Â° C.) of each of the optical elements to be bonded and thickness t2 (m) of one of the optical elements satisfies the following formula: |(&agr;1âˆ’&agr;2)Ã—t2|&lE;10âˆ’9 and t2&gE;2Ã—10âˆ’5; and, by sticking the optical elements to each other in the state of being heated, and then subjecting them to a heat treatment.