GB653634A - Improvements in or relating to optical systems - Google Patents

Improvements in or relating to optical systems

Info

Publication number
GB653634A
GB653634A GB2459/48A GB245948A GB653634A GB 653634 A GB653634 A GB 653634A GB 2459/48 A GB2459/48 A GB 2459/48A GB 245948 A GB245948 A GB 245948A GB 653634 A GB653634 A GB 653634A
Authority
GB
United Kingdom
Prior art keywords
mirror
dimension
plane
concave
optical systems
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
GB2459/48A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB653634A publication Critical patent/GB653634A/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
    • G02B17/08—Catadioptric systems

Abstract

653,634. Optical systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Jan. 27, 1948, No. 2459. Convention date, Jan. 30, 1947. [Class 97 (i)] In a system comprising a concave mirror, a transparent element correcting the spherical aberration of the concave mirror and a second, usually plane mirror located optically between them, the dimension of the reflecting or refracting surface of at least one of the elements in a direction normal to the axial plane is greater than its dimension in a direction parallel to the axial plane. The invention is described with reference to the system disclosed in Specification 605,122 comprising a concave spherical mirror 1 receiving light, for example from a cathode-ray tube, through an aperture 7 of a plane mirror 2 which directs light reflected from the mirror 1 on to a Schmidt correcting plate 3 and thence to form an image on a projection screen. To increase the aperture of the system the dimension l is made greater than the dimension h.
GB2459/48A 1947-01-30 1948-01-27 Improvements in or relating to optical systems Expired GB653634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL264355X 1947-01-30

Publications (1)

Publication Number Publication Date
GB653634A true GB653634A (en) 1951-05-23

Family

ID=19781643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2459/48A Expired GB653634A (en) 1947-01-30 1948-01-27 Improvements in or relating to optical systems

Country Status (4)

Country Link
AT (1) AT165020B (en)
CH (1) CH264355A (en)
DE (1) DE804375C (en)
GB (1) GB653634A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963328A (en) * 1972-10-12 1976-06-15 Honeywell Inc. Wide field reflective optical apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154711B (en) * 1962-08-24 1963-09-19 Rodenstock Optik G Mirror capacitor for enlargement and similar devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963328A (en) * 1972-10-12 1976-06-15 Honeywell Inc. Wide field reflective optical apparatus

Also Published As

Publication number Publication date
DE804375C (en) 1951-04-23
AT165020B (en) 1950-01-10
CH264355A (en) 1949-10-15

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