GB1343164A - Aspheric light-transmissive optical element - Google Patents

Aspheric light-transmissive optical element

Info

Publication number
GB1343164A
GB1343164A GB1343164DA GB1343164A GB 1343164 A GB1343164 A GB 1343164A GB 1343164D A GB1343164D A GB 1343164DA GB 1343164 A GB1343164 A GB 1343164A
Authority
GB
United Kingdom
Prior art keywords
aspheric
light
optical element
transmissive
glass master
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
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Publication of GB1343164A publication Critical patent/GB1343164A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
    • 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
    • B29D11/00019—Production of simple or compound lenses with non-spherical faces, e.g. toric faces

Abstract

1343164 Aspheric optical elements MULLARD Ltd 9 Aug 1971 37354/71 Heading G2J An aspheric, light-transmissive optical element such as a Schmidt corrector made to have the same optical effect as a glass master, comprises a light-transmissive substrate 1 with a moulded layer 3 of light-transmissive plastics material, the outer surface 4 of which is aspheric, the refractive index of the layer being greater than that of the glass master by a percentage that compensates for the linear shrinkage of the plastics material during casting from a mould having a complementary surface to the glass master.
GB1343164D 1971-08-09 1971-08-09 Aspheric light-transmissive optical element Expired GB1343164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3735471 1971-08-09

Publications (1)

Publication Number Publication Date
GB1343164A true GB1343164A (en) 1974-01-10

Family

ID=10395827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1343164D Expired GB1343164A (en) 1971-08-09 1971-08-09 Aspheric light-transmissive optical element

Country Status (4)

Country Link
JP (1) JPS5644401B2 (en)
DE (1) DE2238970A1 (en)
FR (1) FR2148557B1 (en)
GB (1) GB1343164A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985000060A1 (en) * 1983-06-15 1985-01-03 Neal Keith Jones Thin plastic corrector lenses for optical systems
US5717532A (en) * 1993-11-17 1998-02-10 Asahi Kogaku Kogyo Kabushiki Kaisha Reflection-type compound optical elements

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3767317D1 (en) * 1986-02-13 1991-02-21 Philips Nv DIE FOR AN IMPRESSION PROCESS.
JPH0425766Y2 (en) * 1988-07-18 1992-06-22
JPH04280824A (en) * 1991-03-06 1992-10-06 Canon Inc Production device of optical element
RU2179295C1 (en) * 2000-08-22 2002-02-10 Айриян Юрий Аршакович Method for guidance, guidance system device, its visualized information carrier device, as well as device for its orientation and method for manufacture of member of its sighting section

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985000060A1 (en) * 1983-06-15 1985-01-03 Neal Keith Jones Thin plastic corrector lenses for optical systems
US4650275A (en) * 1983-06-15 1987-03-17 Jones Neal K Thin plastic corrector lenses for optical systems
US5717532A (en) * 1993-11-17 1998-02-10 Asahi Kogaku Kogyo Kabushiki Kaisha Reflection-type compound optical elements

Also Published As

Publication number Publication date
JPS4826150A (en) 1973-04-05
FR2148557B1 (en) 1976-03-12
JPS5644401B2 (en) 1981-10-19
DE2238970A1 (en) 1973-02-22
FR2148557A1 (en) 1973-03-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee