US 7,572,507 B2
Optical element and moisture-proof coating method thereof
Tatsuya Kojima, Tokyo (Japan); Takuro Okubo, Tokyo (Japan); and Takashi Takahashi, Tokyo (Japan)
Assigned to Kabushiki Kaisha Topcon, Tokyo (Japan)
Filed on Jan. 30, 2007, as Appl. No. 11/699,583.
Claims priority of application No. 2006-022936 (JP), filed on Jan. 31, 2006.
Prior Publication US 2007/0236794 A1, Oct. 11, 2007
Int. Cl. B32B 3/02 (2006.01); B32B 17/10 (2006.01); B32B 17/06 (2006.01); B32B 17/00 (2006.01); B05D 1/18 (2006.01)
U.S. Cl. 428—421  [428/192; 428/422; 428/426; 428/430; 359/507; 359/513; 427/162; 427/163.1; 427/164; 427/165; 427/169; 427/256; 427/284] 6 Claims
OG exemplary drawing
 
1. An optical element, comprising a birefringent material film and glass substrates adhered to the surfaces of the birefringent material film through an adhesive, wherein end surfaces of the birefringent material film and the glass substrates are moisture-proofed by a coating formed from a solution prepared by mixing a soluble fluorine resin and an ethylenic compound.