GB2091898B - Aspheric projection lens system utilizing concave image - Google Patents

Aspheric projection lens system utilizing concave image

Info

Publication number
GB2091898B
GB2091898B GB8102060A GB8102060A GB2091898B GB 2091898 B GB2091898 B GB 2091898B GB 8102060 A GB8102060 A GB 8102060A GB 8102060 A GB8102060 A GB 8102060A GB 2091898 B GB2091898 B GB 2091898B
Authority
GB
United Kingdom
Prior art keywords
lens system
projection lens
system utilizing
concave image
utilizing concave
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
GB8102060A
Other versions
GB2091898A (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8102060A priority Critical patent/GB2091898B/en
Publication of GB2091898A publication Critical patent/GB2091898A/en
Application granted granted Critical
Publication of GB2091898B publication Critical patent/GB2091898B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
GB8102060A 1981-01-23 1981-01-23 Aspheric projection lens system utilizing concave image Expired GB2091898B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8102060A GB2091898B (en) 1981-01-23 1981-01-23 Aspheric projection lens system utilizing concave image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8102060A GB2091898B (en) 1981-01-23 1981-01-23 Aspheric projection lens system utilizing concave image

Publications (2)

Publication Number Publication Date
GB2091898A GB2091898A (en) 1982-08-04
GB2091898B true GB2091898B (en) 1984-07-18

Family

ID=10519165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8102060A Expired GB2091898B (en) 1981-01-23 1981-01-23 Aspheric projection lens system utilizing concave image

Country Status (1)

Country Link
GB (1) GB2091898B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119113A (en) * 1982-04-19 1983-11-09 Hodges Marvin Parks Aspheric projection lens system
GB2143963A (en) * 1983-07-25 1985-02-20 Philips Electronic Associated Projection lens system
NL8602975A (en) * 1986-11-24 1988-06-16 Philips Nv IMAGE PROJECTION SYSTEM.

Also Published As

Publication number Publication date
GB2091898A (en) 1982-08-04

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Legal Events

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

Effective date: 19930123