Invention Grant
- Patent Title: Method of producing lens sheet and projection screen
- Patent Title (中): 产生透镜片和投影屏的方法
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Application No.: US101669Application Date: 1998-07-15
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Publication No.: US6071443APublication Date: 2000-06-06
- Inventor: Futoshi Osawa , Masahiro Goto
- Applicant: Futoshi Osawa , Masahiro Goto
- Applicant Address: JPX
- Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee Address: JPX
- Priority: JPX8-316364 19971127
- Main IPC: B29D11/00
- IPC: B29D11/00 ; G02B3/00 ; G02B3/08 ; G03B21/60 ; G03B21/62
Abstract:
An object of the present invention is to provide a process for producing a lens sheet, which is safe, which can cut the material cost and the facility cost, which can continuously produce, by the use of a forming die, a formed lens sheet that contains no air bubbles in the lens area thereof and which can attain higher productivity, and reduction of costs by using a decreased number of forming dies or the like; and a projection screen. The process for producing a lens sheet according to the present invention includes the steps of coating a resin composition for a lens sheet onto a forming die by the use of a multiple nozzle in which a plurality of nozzles are arranged at intervals along the forming die for a lens sheet in a direction substantially rectangular to a direction in which the resin composition for a lens sheet will be coated, and superposing a base material on the resin composition for a lens sheet which has been coated onto the forming die.
Public/Granted literature
- US4791363A Ceramic microstrip probe blade Public/Granted day:1988-12-13
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