GB191503549A - Improvements in Periscopes for Military Trench Purposes. - Google Patents

Improvements in Periscopes for Military Trench Purposes.

Info

Publication number
GB191503549A
GB191503549A GB191503549DA GB191503549A GB 191503549 A GB191503549 A GB 191503549A GB 191503549D A GB191503549D A GB 191503549DA GB 191503549 A GB191503549 A GB 191503549A
Authority
GB
United Kingdom
Prior art keywords
periscopes
trench
mirror
lenses
military
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
Inventor
William Peck
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
Application granted granted Critical
Publication of GB191503549A publication Critical patent/GB191503549A/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)
  • Lenses (AREA)

Abstract

3549. Peck, W. March 5. Periscopes.-Relates to a trench periscope of the telescopic type having a wide and brilliantly illuminated field of view, and more particularly to the arrangement of the lenses and to means for preventing tarnishing &c. of the mirrors by preventing access of the atmospheric air. The objective consists of two achromatic lenses A, A' placed at right-angles to one another, the upper mirror C being placed between them in an hermeticallysealed chamber H. The lower mirror O is enclosed in an hermetically-sealed chamber R formed by a glass disk V, the eyepiece lens S, and the support X of the mirror. A secondary compound lens consisting of two separate achromatic lenses J, K is placed midway between the focal planes of the object-glass and the eyepiece.
GB191503549D 1915-03-05 1915-03-05 Improvements in Periscopes for Military Trench Purposes. Expired GB191503549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191503549T 1915-03-05

Publications (1)

Publication Number Publication Date
GB191503549A true GB191503549A (en) 1915-07-15

Family

ID=32649306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191503549D Expired GB191503549A (en) 1915-03-05 1915-03-05 Improvements in Periscopes for Military Trench Purposes.

Country Status (1)

Country Link
GB (1) GB191503549A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482897A (en) * 1965-10-29 1969-12-09 Gerhard Hopp Periscope
US4226518A (en) * 1979-05-11 1980-10-07 Ferdinand Kellner Photographic camera having long focal length objective

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482897A (en) * 1965-10-29 1969-12-09 Gerhard Hopp Periscope
US4226518A (en) * 1979-05-11 1980-10-07 Ferdinand Kellner Photographic camera having long focal length objective

Similar Documents

Publication Publication Date Title
US1445284A (en) Periscopic system
SE8000985L (en) BINOCULAR NIGHT VIEWS
GB960383A (en) Observation and sighting telescope
US3539243A (en) Optical system for day-night periscopic sight
US2375634A (en) Prism telescope
GB191503549A (en) Improvements in Periscopes for Military Trench Purposes.
GB1288143A (en)
FR2465239B1 (en)
GB190815188A (en) Improved Means or Apparatus whereby Objects can be Sighted or Photographed from Submarine Boats or other Situations.
GB191501727A (en) Improvements in Optical Sighting Instruments.
GB191104005A (en) Improvements in Telescopic Apparatus.
RU1831708C (en) Mirror-lens binocular
SU1307426A1 (en) Catadioptric zoom lens
GB551391A (en) Improvements in or relating to variable power telescopes
SU605189A1 (en) Catadioptic telescope
SU781737A1 (en) Wide-angle eyepiece
US1309639A (en) Planoqxaph co
GB928215A (en) Improvements relating to optical viewing devices including electron image amplifiers
RU2176096C2 (en) Wide-angle high-speed lens
RU2042166C1 (en) Wide-angle optical system for closed observation
SU1511731A1 (en) Fast zoom lens
SU1223185A1 (en) Binoculars
GB191412946A (en) Improvements in Telescopes with Variable Magnifying Powers.
GB851592A (en) Improvements in or relating to optical viewing systems, e.g. periscopes
Glasheen et al. Design Considerations For Night Vision Goggles