IT1066189B - Procedimento e stampo per fabbricare un elemento a lente per proiettore - Google Patents
Procedimento e stampo per fabbricare un elemento a lente per proiettoreInfo
- Publication number
- IT1066189B IT1066189B IT51327/76A IT5132776A IT1066189B IT 1066189 B IT1066189 B IT 1066189B IT 51327/76 A IT51327/76 A IT 51327/76A IT 5132776 A IT5132776 A IT 5132776A IT 1066189 B IT1066189 B IT 1066189B
- Authority
- IT
- Italy
- Prior art keywords
- projector
- mold
- procedure
- manufacturing
- lens element
- 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
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00278—Lenticular sheets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/28—Cover glass
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Milling Processes (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Optical Elements Other Than Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB38691/75A GB1546805A (en) | 1975-09-20 | 1975-09-20 | Method of manufacturing a mould for producing a lens element and mould manufactured by that method |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1066189B true IT1066189B (it) | 1985-03-04 |
Family
ID=10405091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT51327/76A IT1066189B (it) | 1975-09-20 | 1976-09-17 | Procedimento e stampo per fabbricare un elemento a lente per proiettore |
Country Status (9)
Country | Link |
---|---|
JP (2) | JPS5835805B2 (ja) |
AU (1) | AU500878B2 (ja) |
BR (1) | BR7606187A (ja) |
DE (1) | DE2641615C2 (ja) |
ES (1) | ES451681A1 (ja) |
FR (1) | FR2324436A1 (ja) |
GB (1) | GB1546805A (ja) |
IN (1) | IN146506B (ja) |
IT (1) | IT1066189B (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4332438A (en) * | 1979-03-23 | 1982-06-01 | Lucas Industries Limited | Lens element |
JPS58179702U (ja) * | 1982-05-27 | 1983-12-01 | 株式会社小糸製作所 | 車輌用前照灯 |
DE3527804A1 (de) * | 1985-08-02 | 1987-02-05 | Bosch Gmbh Robert | Scheinwerfer, insbesondere arbeitsscheinwerfer fuer fahrzeuge |
AT386080B (de) * | 1986-03-07 | 1988-06-27 | Futuritwerk Ag | Lichtstreukoerper zur intensitaetsverteilung von licht |
JPH01257504A (ja) * | 1988-04-08 | 1989-10-13 | Koito Mfg Co Ltd | フレネルステップの加工方法 |
JP2603098B2 (ja) * | 1988-04-08 | 1997-04-23 | 株式会社小糸製作所 | フレネルステップの加工方法 |
US6491481B1 (en) * | 2000-10-31 | 2002-12-10 | Eastman Kodak Company | Method of making a precision microlens mold and a microlens mold |
US6402996B1 (en) * | 2000-10-31 | 2002-06-11 | Eastman Kodak Company | Method of manufacturing a microlens and a microlens array |
US6476971B1 (en) * | 2000-10-31 | 2002-11-05 | Eastman Kodak Company | Method of manufacturing a microlens array mold and a microlens array |
FR2849157B1 (fr) * | 2002-12-20 | 2015-07-10 | Valeo Vision | Dispositif d'eclairage et/ou de signalisation du type projecteur ou feu pour vehicule automobile |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2137079A (en) * | 1935-11-22 | 1938-11-15 | Gen Motors Corp | Lens |
US2890627A (en) * | 1950-03-04 | 1959-06-16 | Gen Motors Corp | Method for making lens mold |
GB1387589A (en) * | 1971-08-06 | 1975-03-19 | Lucas Electrical Co Ltd | Lenses |
JPS5251518Y2 (ja) * | 1972-10-17 | 1977-11-22 | ||
JPS49151274U (ja) * | 1973-04-30 | 1974-12-27 |
-
1975
- 1975-09-20 GB GB38691/75A patent/GB1546805A/en not_active Expired
-
1976
- 1976-08-31 IN IN1605/CAL/76A patent/IN146506B/en unknown
- 1976-09-16 DE DE2641615A patent/DE2641615C2/de not_active Expired
- 1976-09-16 AU AU17827/76A patent/AU500878B2/en not_active Expired
- 1976-09-17 BR BR7606187A patent/BR7606187A/pt unknown
- 1976-09-17 FR FR7627979A patent/FR2324436A1/fr active Granted
- 1976-09-17 IT IT51327/76A patent/IT1066189B/it active
- 1976-09-20 ES ES451681A patent/ES451681A1/es not_active Expired
- 1976-09-20 JP JP51111928A patent/JPS5835805B2/ja not_active Expired
-
1983
- 1983-03-02 JP JP58033003A patent/JPS58181512A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2641615A1 (de) | 1977-03-31 |
JPS5835805B2 (ja) | 1983-08-05 |
DE2641615C2 (de) | 1984-05-17 |
AU500878B2 (en) | 1979-06-07 |
JPS5239713A (en) | 1977-03-28 |
BR7606187A (pt) | 1977-06-14 |
AU1782776A (en) | 1978-03-23 |
ES451681A1 (es) | 1977-11-16 |
GB1546805A (en) | 1979-05-31 |
JPS58181512A (ja) | 1983-10-24 |
FR2324436A1 (fr) | 1977-04-15 |
IN146506B (ja) | 1979-06-23 |
FR2324436B1 (ja) | 1979-01-19 |
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