TW200702154A - A plate member for optical use - Google Patents
A plate member for optical useInfo
- Publication number
- TW200702154A TW200702154A TW095118115A TW95118115A TW200702154A TW 200702154 A TW200702154 A TW 200702154A TW 095118115 A TW095118115 A TW 095118115A TW 95118115 A TW95118115 A TW 95118115A TW 200702154 A TW200702154 A TW 200702154A
- Authority
- TW
- Taiwan
- Prior art keywords
- plate member
- optical use
- gate marks
- gate
- thermoplastic resin
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
- B29C45/372—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings provided with means for marking or patterning, e.g. numbering articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0027—Gate or gate mark locations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Optical Elements Other Than Lenses (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A plate member for optical use which is obtained by injection molding of a thermoplastic resin using a multi gate mold in which gate marks exist within the optically effective area and the ratio of the arithmetic average surface roughness of the gate marks Ra1 to the arithmetic average surface roughness of the portions other than the gate marks within the optically effective area Ra2:Ra1/Ra2 is from 0.4 to 3. The plate member for optical use of the preset invention can be prepared easily by injection molding of a thermoplastic resin and the gate marks of the plate member are undistinguishable without treating when used for optical uses.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005155906 | 2005-05-27 | ||
JP2006019428A JP2007001290A (en) | 2005-05-27 | 2006-01-27 | Optical flat plate member and manufacturing method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200702154A true TW200702154A (en) | 2007-01-16 |
Family
ID=37452140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW095118115A TW200702154A (en) | 2005-05-27 | 2006-05-22 | A plate member for optical use |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2007001290A (en) |
KR (1) | KR20080031210A (en) |
TW (1) | TW200702154A (en) |
WO (1) | WO2006126731A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008229963A (en) * | 2007-03-19 | 2008-10-02 | Masahiro Moriuchi | Injection mold |
JP5805435B2 (en) * | 2011-06-09 | 2015-11-04 | スタンレー電気株式会社 | Valve gate type mold equipment |
JP5792536B2 (en) * | 2011-07-15 | 2015-10-14 | スタンレー電気株式会社 | Valve gate type mold equipment |
JP2013107373A (en) | 2011-11-24 | 2013-06-06 | Sony Corp | Apparatus and method for manufacturing pattern transfer medium, disk-shaped pattern transfer medium and pattern transfer medium |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002303734A (en) * | 2001-04-05 | 2002-10-18 | Sumitomo Chem Co Ltd | Light transmission plate |
JP4144028B2 (en) * | 2002-09-24 | 2008-09-03 | 日本ゼオン株式会社 | Manufacturing method of light diffusion plate |
JP2004264328A (en) * | 2003-01-22 | 2004-09-24 | Dainippon Printing Co Ltd | Fresnel lens sheet and rear projection screen |
JP2006106190A (en) * | 2004-10-01 | 2006-04-20 | Nippon Zeon Co Ltd | Method for manufacturing light diffusion plate |
-
2006
- 2006-01-27 JP JP2006019428A patent/JP2007001290A/en not_active Withdrawn
- 2006-05-22 TW TW095118115A patent/TW200702154A/en unknown
- 2006-05-25 WO PCT/JP2006/310953 patent/WO2006126731A1/en active Application Filing
- 2006-05-25 KR KR1020077030343A patent/KR20080031210A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO2006126731A1 (en) | 2006-11-30 |
KR20080031210A (en) | 2008-04-08 |
JP2007001290A (en) | 2007-01-11 |
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