JPS647001A - Production of fresnel lens - Google Patents
Production of fresnel lensInfo
- Publication number
- JPS647001A JPS647001A JP16321187A JP16321187A JPS647001A JP S647001 A JPS647001 A JP S647001A JP 16321187 A JP16321187 A JP 16321187A JP 16321187 A JP16321187 A JP 16321187A JP S647001 A JPS647001 A JP S647001A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- fresnel lens
- air bubbles
- mold
- coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To eliminate the need for using a vacuum system at the time of production and to decrease tunneling so that the uniformity of a sheet thickness is obtd. as a UV or EB curing resin cures during pressurization by expelling air bubbles by the resin coated in the central part of a metallic mold for a Fresnel lens. CONSTITUTION:The UV curing resin of an urethane acrylate system is coated as a 1st resin on the metallic mold 1 for the Fresnel lens and the UV curing resin of an epoxy acrylate system is dropped as the 2nd resin 3 thereon. An acrylic sheet which has UV transmissivity and is coated with a primer of a vinyl chloride/vinyl acetate copolymer system is laminated as a transparent substrate 4 thereon and the air bubbles entering the spacing between the mold 1 and the transparent substrate 4 are pushed out at this time. A surface plate 5 is further mounted onto the substrate 4 from above and is pressed. The 1st resin and the 2nd resin 3 are cured by projecting the light of a mercury lamp which is a UV light source 6. The mold is then dissociated and parted, by which the Fresnel lens contg. no air bubbles is obtd. The Fresnel lens having good optical characteristics is thereby inexpensively produced without incorporating the air bubbles therein even if the production is executed not in a vacuum atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62163211A JP2558121B2 (en) | 1987-06-30 | 1987-06-30 | Manufacturing method of Fresnel lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62163211A JP2558121B2 (en) | 1987-06-30 | 1987-06-30 | Manufacturing method of Fresnel lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS647001A true JPS647001A (en) | 1989-01-11 |
| JP2558121B2 JP2558121B2 (en) | 1996-11-27 |
Family
ID=15769407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62163211A Expired - Fee Related JP2558121B2 (en) | 1987-06-30 | 1987-06-30 | Manufacturing method of Fresnel lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558121B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5042994A (en) * | 1990-05-25 | 1991-08-27 | Union Carbide Industrial Gases Technology Corporation | Control of pressure swing adsorption operations |
| US5258056A (en) * | 1991-09-27 | 1993-11-02 | The Boc Group, Inc. | PSA system with product turndown and purity control |
| US5746806A (en) * | 1996-08-15 | 1998-05-05 | Nellcor Puritan Bennett Incorporated | Apparatus and method for controlling output of an oxygen concentrator |
| US6395065B1 (en) * | 1999-05-14 | 2002-05-28 | Respironics, Inc. | Air flow control in a gas fractionalization system and associated method |
| JP2003062934A (en) * | 2002-03-29 | 2003-03-05 | Dainippon Printing Co Ltd | Thick film pattern forming method |
| US6736999B2 (en) * | 2000-08-22 | 2004-05-18 | Canon Kabushiki Kaisha | Method of manufacturing optical element and optical element manufactured thereby |
| US6877973B2 (en) | 2000-11-10 | 2005-04-12 | Dai Nippon Printing Co., Ltd. | Method and apparatus for manufacturing a lens sheet |
| JP2011116115A (en) * | 2009-09-02 | 2011-06-16 | Canon Inc | Manufacturing method of plastic member, and plastic member |
| JP2013022770A (en) * | 2011-07-15 | 2013-02-04 | Sharp Corp | Production process of cured material, production apparatus of cured material, and program |
-
1987
- 1987-06-30 JP JP62163211A patent/JP2558121B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5042994A (en) * | 1990-05-25 | 1991-08-27 | Union Carbide Industrial Gases Technology Corporation | Control of pressure swing adsorption operations |
| US5258056A (en) * | 1991-09-27 | 1993-11-02 | The Boc Group, Inc. | PSA system with product turndown and purity control |
| US5746806A (en) * | 1996-08-15 | 1998-05-05 | Nellcor Puritan Bennett Incorporated | Apparatus and method for controlling output of an oxygen concentrator |
| US6395065B1 (en) * | 1999-05-14 | 2002-05-28 | Respironics, Inc. | Air flow control in a gas fractionalization system and associated method |
| US6497755B2 (en) | 1999-05-14 | 2002-12-24 | Respironics, Inc. | Air flow control in a gas fractionalization system and associated method |
| US6736999B2 (en) * | 2000-08-22 | 2004-05-18 | Canon Kabushiki Kaisha | Method of manufacturing optical element and optical element manufactured thereby |
| US6877973B2 (en) | 2000-11-10 | 2005-04-12 | Dai Nippon Printing Co., Ltd. | Method and apparatus for manufacturing a lens sheet |
| JP2003062934A (en) * | 2002-03-29 | 2003-03-05 | Dainippon Printing Co Ltd | Thick film pattern forming method |
| JP2011116115A (en) * | 2009-09-02 | 2011-06-16 | Canon Inc | Manufacturing method of plastic member, and plastic member |
| JP2013022770A (en) * | 2011-07-15 | 2013-02-04 | Sharp Corp | Production process of cured material, production apparatus of cured material, and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2558121B2 (en) | 1996-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |