GB239677A - Improvements in or relating to an optical system for submarine periscopes and the like adapted to give simultaneous all round panoramic vision - Google Patents

Improvements in or relating to an optical system for submarine periscopes and the like adapted to give simultaneous all round panoramic vision

Info

Publication number
GB239677A
GB239677A GB1923524A GB1923524A GB239677A GB 239677 A GB239677 A GB 239677A GB 1923524 A GB1923524 A GB 1923524A GB 1923524 A GB1923524 A GB 1923524A GB 239677 A GB239677 A GB 239677A
Authority
GB
United Kingdom
Prior art keywords
prism
optical system
submarine
relating
screen
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
GB1923524A
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.)
MAN MOHAN KIRTANE
Original Assignee
MAN MOHAN KIRTANE
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 MAN MOHAN KIRTANE filed Critical MAN MOHAN KIRTANE
Priority to GB1923524A priority Critical patent/GB239677A/en
Publication of GB239677A publication Critical patent/GB239677A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)

Abstract

239,677. Kirtane, M. M. Aug. 13, 1924. Periscopes.-An optical system for a submarine periscope whereby a complete panorama is projected on to a cylindrical screen comprises in combination a top cylindrical prism 1, which is a solid of revolution formed by the rotation of a right-angled triangle about one of its acute angles, and a similar bottom prism 19, the surface 21 of which is curved. Rays from surrounding objects are reflected by the prisms 1, 19 through the curved surface 21 to form a cylindrical image on the screen 22 supported from the deck 15 by rods 23. The upper prism is mounted in a tube 10 so that it may be raised or lowered at will. The screen 22 may be graduated in degrees and marked with the fore and aft line of the submarine. In a modification shown in the left-hand portion of Fig. 2 the surface of the lower prism is straight in vertical section, the image being formed by lenses in the vertical portion of the periscope.
GB1923524A 1924-08-13 1924-08-13 Improvements in or relating to an optical system for submarine periscopes and the like adapted to give simultaneous all round panoramic vision Expired GB239677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1923524A GB239677A (en) 1924-08-13 1924-08-13 Improvements in or relating to an optical system for submarine periscopes and the like adapted to give simultaneous all round panoramic vision

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1923524A GB239677A (en) 1924-08-13 1924-08-13 Improvements in or relating to an optical system for submarine periscopes and the like adapted to give simultaneous all round panoramic vision

Publications (1)

Publication Number Publication Date
GB239677A true GB239677A (en) 1925-09-17

Family

ID=10125953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1923524A Expired GB239677A (en) 1924-08-13 1924-08-13 Improvements in or relating to an optical system for submarine periscopes and the like adapted to give simultaneous all round panoramic vision

Country Status (1)

Country Link
GB (1) GB239677A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169419A (en) * 1985-01-04 1986-07-09 Lee Ah Soon Inspection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169419A (en) * 1985-01-04 1986-07-09 Lee Ah Soon Inspection device

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