GB1443271A - Reflex lens systems - Google Patents

Reflex lens systems

Info

Publication number
GB1443271A
GB1443271A GB9574A GB9574A GB1443271A GB 1443271 A GB1443271 A GB 1443271A GB 9574 A GB9574 A GB 9574A GB 9574 A GB9574 A GB 9574A GB 1443271 A GB1443271 A GB 1443271A
Authority
GB
United Kingdom
Prior art keywords
meniscus
flint
crown
negative
jan
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
GB9574A
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 GB9574A priority Critical patent/GB1443271A/en
Priority to JP49149288A priority patent/JPS50107926A/ja
Priority to FR7500051A priority patent/FR2256422B3/fr
Priority to DE19752500070 priority patent/DE2500070A1/en
Publication of GB1443271A publication Critical patent/GB1443271A/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
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/008—Systems specially adapted to form image relays or chained systems

Landscapes

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

Abstract

1443271 Optical lenses RANK ORGANISATION Ltd 2 Jan 1975 [2 Jan 1974] 00095/74 Heading G2J A reflex lens comprises one or more components and, at the stop position, a mirror which is concave to the components. An image is formed adjacent the object and of unit magnification. In the embodiment of Fig. 1 (for which numerical data are given) the positive element is crown glass (lower refractive index) and the negative element is flint glass (higher R.I.). In another embodiment Fig. 2, (not shown) a crown meniscus element is followed by a flint meniscus element with an air space between. In Figs. 3, 4 (not shown) a negative flint meniscus is followed by a positive meniscus. In Fig. 5A the front element is crown, the rear flint. In a modification, Fig. 5B (not shown) the front element is a negative flint meniscus and the rear element is crown. In Fig. 6 the reflecting surface is formed on the rear surface of a third element. The front two elements are as in Fig. 3. In a modification Fig. 7, (not shown) the doublet is replaced by a single element but an aspheric surface is employed in the lens. An aspheric surface may be employed in any of the embodiments.
GB9574A 1974-01-02 1974-01-02 Reflex lens systems Expired GB1443271A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9574A GB1443271A (en) 1974-01-02 1974-01-02 Reflex lens systems
JP49149288A JPS50107926A (en) 1974-01-02 1974-12-28
FR7500051A FR2256422B3 (en) 1974-01-02 1975-01-02
DE19752500070 DE2500070A1 (en) 1974-01-02 1975-01-02 REFLECTIVE LENS SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9574A GB1443271A (en) 1974-01-02 1974-01-02 Reflex lens systems

Publications (1)

Publication Number Publication Date
GB1443271A true GB1443271A (en) 1976-07-21

Family

ID=9698312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9574A Expired GB1443271A (en) 1974-01-02 1974-01-02 Reflex lens systems

Country Status (4)

Country Link
JP (1) JPS50107926A (en)
DE (1) DE2500070A1 (en)
FR (1) FR2256422B3 (en)
GB (1) GB1443271A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102816A1 (en) * 1980-01-31 1982-02-11 Perkin Elmer Corp "WAVELENGTH AND TEMPERATURE-INDEPENDENT, SINGLE OPTICAL SYSTEM WITH SPHERICAL SURFACES"

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6019484B2 (en) * 1975-11-07 1985-05-16 キヤノン株式会社 Copying lens
US4056308A (en) * 1976-03-03 1977-11-01 Xerox Corporation Variable focal length reflector lens system
US4062625A (en) * 1976-09-03 1977-12-13 Bell & Howell Company Reflex copier lens
US4060312A (en) * 1976-09-03 1977-11-29 Bell & Howell Company Copier lens of reflex design
US4108539A (en) * 1976-11-18 1978-08-22 Hewlett-Packard Company Reflecting lens system
US4171871A (en) * 1977-06-30 1979-10-23 International Business Machines Corporation Achromatic unit magnification optical system
US5052763A (en) * 1990-08-28 1991-10-01 International Business Machines Corporation Optical system with two subsystems separately correcting odd aberrations and together correcting even aberrations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102816A1 (en) * 1980-01-31 1982-02-11 Perkin Elmer Corp "WAVELENGTH AND TEMPERATURE-INDEPENDENT, SINGLE OPTICAL SYSTEM WITH SPHERICAL SURFACES"

Also Published As

Publication number Publication date
JPS50107926A (en) 1975-08-25
FR2256422B3 (en) 1977-09-30
DE2500070A1 (en) 1975-07-10
FR2256422A1 (en) 1975-07-25

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Legal Events

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