Radiant energy – Supported for nonsignalling objects of irradiation – With source support
Patent
1996-02-28
1997-05-06
Berman, Jack I.
Radiant energy
Supported for nonsignalling objects of irradiation
With source support
25045411, 250504R, 355 53, 356401, G03B 2704
Patent
active
056273789
ABSTRACT:
A double-sided exposure apparatus is disclosed. The apparatus incorporates a phototool die set that provides high accuracy, speed and smooth operation with minimal particulate contamination of the exposure zone while allowing conventional work piece transport and handling. Upper and lower die halves are supported by four corner posts, guided by precision preloaded bearings to obtain high accuracy in front to back registration of art works maintained in the upper and lower die halves. The die halves are reversibly separated by upward motion actuated by a closed loop servo motor and lead screw system simultaneously elevating the four corner posts to which the upper die half is rigidly attached.
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Berman Jack I.
Nguyen Kiet T.
ORC Electronic Products, A Divison of Benson Eyecare Corporation
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