GB108315A - Improvements relating to Periscopes. - Google Patents

Improvements relating to Periscopes.

Info

Publication number
GB108315A
GB108315A GB10366/17A GB1036617A GB108315A GB 108315 A GB108315 A GB 108315A GB 10366/17 A GB10366/17 A GB 10366/17A GB 1036617 A GB1036617 A GB 1036617A GB 108315 A GB108315 A GB 108315A
Authority
GB
United Kingdom
Prior art keywords
mirror
image
gives
periscopes
virtual image
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
GB10366/17A
Inventor
Emmanuel Carvallo
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
Publication of GB108315A publication Critical patent/GB108315A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/08—Periscopes

Abstract

108,315. Carvallo, E. March 2, 1915, [Convention date]. Periscopes. - The reflecting-surfaces take the form of curved mirrors, which, in addition to changing the path of the reflected pencil. constitute integral parts of the optical system designed to increase the field or the magnification. The arrangement shown by way of example in Fig. 2 consists of a concentrating lens L, placed between parallel convex and concave spherical mirrors M, M<1>. of which the mirror M gives in its principal plane for each distant point P a virtual image P<1>. The lens, at a distance therefrom of twice its focal length, gives a real image. P<1>, symmetrical with the virtual image. The second image is seen by the eve O in the mirror M<1>. which acts both as a reflector and as a magnifying element. The elements of the system are so chosen that aberrations due to the first mirror are compensated by those due to the second mirror, and a reference is given to a publication describing such calculations.
GB10366/17A 1915-03-02 1917-07-18 Improvements relating to Periscopes. Expired GB108315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR108315X 1915-03-02

Publications (1)

Publication Number Publication Date
GB108315A true GB108315A (en) 1918-01-24

Family

ID=32606076

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10366/17A Expired GB108315A (en) 1915-03-02 1917-07-18 Improvements relating to Periscopes.

Country Status (1)

Country Link
GB (1) GB108315A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942522A (en) * 1956-04-18 1960-06-28 James E Merriam Rear view device
US3041916A (en) * 1959-03-13 1962-07-03 Clave Serge Afocal optical device having a mounting providing protection against dangerous radiation
US5214540A (en) * 1991-01-14 1993-05-25 Yoram Yakimovsky Curved mirror optical systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942522A (en) * 1956-04-18 1960-06-28 James E Merriam Rear view device
US3041916A (en) * 1959-03-13 1962-07-03 Clave Serge Afocal optical device having a mounting providing protection against dangerous radiation
US5214540A (en) * 1991-01-14 1993-05-25 Yoram Yakimovsky Curved mirror optical systems

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