US 6,982,833 B2
Erect image resin lens array and the manufacture thereof
Hiroyuki Nemoto, Osaka (Japan)
Assigned to Nippon Sheet Glass Company, Limited, Tokyo (Japan)
Filed on Oct. 30, 2002, as Appl. No. 10/283,859.
Claims priority of application No. 2001-336691 (JP), filed on Nov. 01, 2001; application No. 2001-336709 (JP), filed on Nov. 01, 2001; and application No. 2002-180173 (JP), filed on Jun. 20, 2002.
Prior Publication US 2003/0081312 A1, May 01, 2003
Int. Cl. G02B 27/10 (2006.01)
U.S. Cl. 359—626 27 Claims
OG exemplary drawing
 
1. A resin lens plate having oblong shape comprising:
A lenslet forming area at the center of one or both of its surfaces where a matrix of convex lenslets each having a spherical or aspherical end surface are regularly arranged such that adjacent lenslets are apart from each other by a specified center-to-center pitch; and
margins around the central lenslet area where no lenslets are formed,
wherein each convex lenslet has a quadrangular or hexagonal contour in a plan view of the plate; and the direction in which the center-to-center distance between adjacent lenslets takes a maximum value is in parallel with the lengthwise side of the plate, and
wherein a transparent conductive film is formed on the surface of the plate in such a manner as to allow the potential level of the transparent conductive film to be adjusted.