GB1546805A - Method of manufacturing a mould for producing a lens element and mould manufactured by that method - Google Patents

Method of manufacturing a mould for producing a lens element and mould manufactured by that method

Info

Publication number
GB1546805A
GB1546805A GB38691/75A GB3869175A GB1546805A GB 1546805 A GB1546805 A GB 1546805A GB 38691/75 A GB38691/75 A GB 38691/75A GB 3869175 A GB3869175 A GB 3869175A GB 1546805 A GB1546805 A GB 1546805A
Authority
GB
United Kingdom
Prior art keywords
mould
producing
manufacturing
lens element
manufactured
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.)
Expired
Application number
GB38691/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB38691/75A priority Critical patent/GB1546805A/en
Priority to IN1605/CAL/76A priority patent/IN146506B/en
Priority to DE2641615A priority patent/DE2641615C2/en
Priority to AU17827/76A priority patent/AU500878B2/en
Priority to IT51327/76A priority patent/IT1066189B/en
Priority to BR7606187A priority patent/BR7606187A/en
Priority to FR7627979A priority patent/FR2324436A1/en
Priority to JP51111928A priority patent/JPS5835805B2/en
Priority to ES451681A priority patent/ES451681A1/en
Priority to US05/897,875 priority patent/US4198182A/en
Publication of GB1546805A publication Critical patent/GB1546805A/en
Priority to JP58033003A priority patent/JPS58181512A/en
Expired legal-status Critical Current

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)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Optical Elements Other Than Lenses (AREA)
GB38691/75A 1975-09-20 1975-09-20 Method of manufacturing a mould for producing a lens element and mould manufactured by that method Expired GB1546805A (en)

Priority Applications (11)

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
IN1605/CAL/76A IN146506B (en) 1975-09-20 1976-08-31
DE2641615A DE2641615C2 (en) 1975-09-20 1976-09-16 Method for producing a mold for producing a light diffusion disk
AU17827/76A AU500878B2 (en) 1975-09-20 1976-09-16 A method of manufacturing a mould fora lens element
BR7606187A BR7606187A (en) 1975-09-20 1976-09-17 MATRIX FOR THE PRODUCTION OF A LAMP LENS AND PROCESS FOR MANUFACTURING THIS MATRIX
IT51327/76A IT1066189B (en) 1975-09-20 1976-09-17 PROCEDURE AND MOLD FOR MANUFACTURING A LENS ELEMENT FOR A PROJECTOR
FR7627979A FR2324436A1 (en) 1975-09-20 1976-09-17 MOLD FOR THE REALIZATION OF A LENS ELEMENT FOR A HEADLIGHT AND ITS MANUFACTURING PROCESS
JP51111928A JPS5835805B2 (en) 1975-09-20 1976-09-20 Method for manufacturing mold for manufacturing lens device
ES451681A ES451681A1 (en) 1975-09-20 1976-09-20 Method of manufacturing a mould for producing a lens element and mould manufactured by that method
US05/897,875 US4198182A (en) 1975-09-20 1978-04-19 Method of manufacturing a mould for producing a lamp lens element
JP58033003A JPS58181512A (en) 1975-09-20 1983-03-02 Manufacture of mold for manufacturing lens device

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
GB1546805A true GB1546805A (en) 1979-05-31

Family

ID=10405091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38691/75A Expired GB1546805A (en) 1975-09-20 1975-09-20 Method of manufacturing a mould for producing a lens element and mould manufactured by that method

Country Status (9)

Country Link
JP (2) JPS5835805B2 (en)
AU (1) AU500878B2 (en)
BR (1) BR7606187A (en)
DE (1) DE2641615C2 (en)
ES (1) ES451681A1 (en)
FR (1) FR2324436A1 (en)
GB (1) GB1546805A (en)
IN (1) IN146506B (en)
IT (1) IT1066189B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017356A1 (en) * 1979-03-23 1980-10-15 LUCAS INDUSTRIES public limited company Lens element
EP2302290A3 (en) * 2002-12-20 2013-10-16 Valeo Vision Process for obtaining a diffusing screen or cover lens for a lighting and/or signalling device for motor vehicles

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179702U (en) * 1982-05-27 1983-12-01 株式会社小糸製作所 vehicle headlights
DE3527804A1 (en) * 1985-08-02 1987-02-05 Bosch Gmbh Robert Headlamp, in particular working headlamp for vehicles
AT386080B (en) * 1986-03-07 1988-06-27 Futuritwerk Ag LIGHT SPREADER FOR INTENSITY DISTRIBUTION OF LIGHT
JPH01257504A (en) * 1988-04-08 1989-10-13 Koito Mfg Co Ltd Machining method for fresnel step
JP2603098B2 (en) * 1988-04-08 1997-04-23 株式会社小糸製作所 Processing method of Fresnel step
US6476971B1 (en) * 2000-10-31 2002-11-05 Eastman Kodak Company Method of manufacturing a microlens array mold and a microlens array
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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 (en) * 1972-10-17 1977-11-22
JPS49151274U (en) * 1973-04-30 1974-12-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017356A1 (en) * 1979-03-23 1980-10-15 LUCAS INDUSTRIES public limited company Lens element
EP2302290A3 (en) * 2002-12-20 2013-10-16 Valeo Vision Process for obtaining a diffusing screen or cover lens for a lighting and/or signalling device for motor vehicles

Also Published As

Publication number Publication date
JPS5835805B2 (en) 1983-08-05
AU500878B2 (en) 1979-06-07
FR2324436B1 (en) 1979-01-19
JPS5239713A (en) 1977-03-28
JPS58181512A (en) 1983-10-24
AU1782776A (en) 1978-03-23
BR7606187A (en) 1977-06-14
ES451681A1 (en) 1977-11-16
FR2324436A1 (en) 1977-04-15
DE2641615A1 (en) 1977-03-31
IN146506B (en) 1979-06-23
IT1066189B (en) 1985-03-04
DE2641615C2 (en) 1984-05-17

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee