GB1388545A - Catadioptric lenses - Google Patents

Catadioptric lenses

Info

Publication number
GB1388545A
GB1388545A GB1979171A GB1979171A GB1388545A GB 1388545 A GB1388545 A GB 1388545A GB 1979171 A GB1979171 A GB 1979171A GB 1979171 A GB1979171 A GB 1979171A GB 1388545 A GB1388545 A GB 1388545A
Authority
GB
United Kingdom
Prior art keywords
mirror
objective
primary
secondary mirror
lens
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
GB1979171A
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB1979171A priority Critical patent/GB1388545A/en
Priority to FR7220248A priority patent/FR2140472B1/fr
Priority to IL39647A priority patent/IL39647A/en
Priority to BE784606A priority patent/BE784606A/en
Priority to NL7207921A priority patent/NL7207921A/xx
Priority to DE2228235A priority patent/DE2228235C2/en
Publication of GB1388545A publication Critical patent/GB1388545A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0884—Catadioptric systems having a pupil corrector
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0852—Catadioptric systems having a field corrector only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

1388545 Catadioptric objective RANK ORGANISATION Ltd 26 May 1972 [9 June 1971] 19791/71 Heading G2J A catadioptric objective comprises an annular concave primary mirror having a curvature lying between “ F and 1/F, where F is the equivalent focal length of the complete objective, a secondary mirror receiving light from the primary mirror and reflecting it to an image-receiving area positioned within 0.1F of the central aperture of the primary mirror, and at least one lens component, the sum total of the curvatures of individual surfaces multiplied by the change in the reciprocal of the mean refractive index when crossing the respective surfaces (with the refractive indices difference at the mirror surfaces counting as -2 or 2 being numerically not greater than 1/3 F and the overall length of the objective not exceeding 1.6F. The objective may include a lens component behind the secondary mirror having its rear surface not more than F/2 from the focal plane. The objective may also include an astigmation correcting doublet followed by a field flattening lens behind the secondary mirror. One or more lens components of power between -1/10F and 1/3F may be placed in front of the primary mirrors, one of which carries the secondary mirror on its rear surface. A focusing mechanism may move the two mirrors and any lenses associated with the second mirror. Data are given for five examples of which one is for use with infrared wavelengths.
GB1979171A 1971-06-09 1971-06-09 Catadioptric lenses Expired GB1388545A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1979171A GB1388545A (en) 1971-06-09 1971-06-09 Catadioptric lenses
FR7220248A FR2140472B1 (en) 1971-06-09 1972-06-06
IL39647A IL39647A (en) 1971-06-09 1972-06-08 Catadioptric systems
BE784606A BE784606A (en) 1971-06-09 1972-06-08 PERFECTED REFLECTIVE LENS
NL7207921A NL7207921A (en) 1971-06-09 1972-06-09
DE2228235A DE2228235C2 (en) 1971-06-09 1972-06-09 Mirror lens of Cassegrain type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1979171A GB1388545A (en) 1971-06-09 1971-06-09 Catadioptric lenses

Publications (1)

Publication Number Publication Date
GB1388545A true GB1388545A (en) 1975-03-26

Family

ID=10135283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1979171A Expired GB1388545A (en) 1971-06-09 1971-06-09 Catadioptric lenses

Country Status (6)

Country Link
BE (1) BE784606A (en)
DE (1) DE2228235C2 (en)
FR (1) FR2140472B1 (en)
GB (1) GB1388545A (en)
IL (1) IL39647A (en)
NL (1) NL7207921A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861148A (en) * 1986-03-12 1989-08-29 Matsushita Electric Industrial Co., Inc. Projection optical system for use in precise copy
CN110579859A (en) * 2019-09-03 2019-12-17 佛山科学技术学院 compact type long-focal-length star sensor telecentric optical system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199515B (en) * 1961-12-23 1965-08-26 Rodenstock Optik G Mirror lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861148A (en) * 1986-03-12 1989-08-29 Matsushita Electric Industrial Co., Inc. Projection optical system for use in precise copy
CN110579859A (en) * 2019-09-03 2019-12-17 佛山科学技术学院 compact type long-focal-length star sensor telecentric optical system

Also Published As

Publication number Publication date
DE2228235C2 (en) 1981-11-26
DE2228235A1 (en) 1972-12-21
NL7207921A (en) 1972-12-12
IL39647A (en) 1975-03-13
FR2140472A1 (en) 1973-01-19
FR2140472B1 (en) 1977-06-17
IL39647A0 (en) 1972-08-30
BE784606A (en) 1972-10-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee