GB548729A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB548729A
GB548729A GB230141A GB230141A GB548729A GB 548729 A GB548729 A GB 548729A GB 230141 A GB230141 A GB 230141A GB 230141 A GB230141 A GB 230141A GB 548729 A GB548729 A GB 548729A
Authority
GB
United Kingdom
Prior art keywords
reflecting surfaces
objectives
taylor
refracting
quartz
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
GB230141A
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.)
ARTHUR WARMISHAW
Taylor Taylor and Hobson Ltd
Original Assignee
ARTHUR WARMISHAW
Taylor Taylor and Hobson 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 ARTHUR WARMISHAW, Taylor Taylor and Hobson Ltd filed Critical ARTHUR WARMISHAW
Priority to GB230141A priority Critical patent/GB548729A/en
Publication of GB548729A publication Critical patent/GB548729A/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
    • G02B17/0888—Catadioptric systems having a pupil corrector the corrector having at least one aspheric surface, e.g. Schmidt plates
    • 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
    • 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
    • G02B17/0836—Catadioptric systems using more than three curved mirrors
    • G02B17/084—Catadioptric systems using more than three curved mirrors on-axis systems with at least one of the mirrors having a central aperture

Abstract

548,729. Photographic objectives. TAYLOR, TAYLOR & HOBSON, Ltd., and WARMISHAM, A. Feb. 20, 1941, No. 2301. Drawings to Specification. [Class 97 (i)] In objectives comprising reflecting surfaces supplying the optical power and at least one refracting correcting plate, each reflecting surface is a metallic or metallized surface, and each refracting element is transparent over a spectral range extending considerably beyond the visible spectrum. Aluminium or silver may be used for the reflecting surfaces, and vitreous quartz, or crystalline potassium chloride or magnesium oxide (#-Mg0) may form the refractive material. Internally reflecting surfaces may be formed on opposite faces of a single quartz &c. plate. Data for three examples, modifications of examples given in Specifications 541,650, 541,652 and 548,384 are set out. Specification 541,651 also is referred to.
GB230141A 1941-02-20 1941-02-20 Improvements in or relating to optical objectives Expired GB548729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB230141A GB548729A (en) 1941-02-20 1941-02-20 Improvements in or relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB230141A GB548729A (en) 1941-02-20 1941-02-20 Improvements in or relating to optical objectives

Publications (1)

Publication Number Publication Date
GB548729A true GB548729A (en) 1942-10-22

Family

ID=9737147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB230141A Expired GB548729A (en) 1941-02-20 1941-02-20 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB548729A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237041A2 (en) * 1986-03-12 1987-09-16 Matsushita Electric Industrial Co., Ltd. Projection optical system for use in precise copy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237041A2 (en) * 1986-03-12 1987-09-16 Matsushita Electric Industrial Co., Ltd. Projection optical system for use in precise copy
EP0237041A3 (en) * 1986-03-12 1989-05-03 Matsushita Electric Industrial Co., Ltd. Projection optical system for use in precise copy

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