GB147107A - Improvements in finders for photographic apparatus - Google Patents

Improvements in finders for photographic apparatus

Info

Publication number
GB147107A
GB147107A GB19137/20A GB1913720A GB147107A GB 147107 A GB147107 A GB 147107A GB 19137/20 A GB19137/20 A GB 19137/20A GB 1913720 A GB1913720 A GB 1913720A GB 147107 A GB147107 A GB 147107A
Authority
GB
United Kingdom
Prior art keywords
sighting
lens
marks
lines
camera
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
GB19137/20A
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB147107A publication Critical patent/GB147107A/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
    • G02B23/14—Viewfinders

Landscapes

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

Abstract

147,107. Zeiss, C., [Firm of]. April 6, 1915, [Convention date]. Optical systems.-A collimator with a system of sighting marks on a carrier c, Figs. 4 and 5, at the focal plane of the lens b is adapted to a camera as a finder. Either the sighting-marks or the lens may be adjustable vertically and horizontally. The sighting-marks may comprise framing lines e<1>, e<2>, which show the field of view at infinity and other distances, and additional lines e' for use with one component only of the camera lens. The lines are marked so as to appear as rectangles through the viewing-lens. Only half the lens and sighting-mark system may be used, the position of the framing lines showing the field of view seen directly through the upper part. In a further modification, the upper half of the sighting-mark is blackened and each half is provided with a series of circles, Fig. 7, corresponding to the appearance of a spherical balloon of a certain diameter at different distances which are indicated.
GB19137/20A 1915-04-06 1920-07-07 Improvements in finders for photographic apparatus Expired GB147107A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE147107X 1915-04-06

Publications (1)

Publication Number Publication Date
GB147107A true GB147107A (en) 1921-10-07

Family

ID=5671786

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19137/20A Expired GB147107A (en) 1915-04-06 1920-07-07 Improvements in finders for photographic apparatus

Country Status (1)

Country Link
GB (1) GB147107A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386197B (en) * 1986-01-08 1988-07-11 Glaxo Group Ltd METHOD FOR PRODUCING NEW INDOLDER DERIVATIVES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386197B (en) * 1986-01-08 1988-07-11 Glaxo Group Ltd METHOD FOR PRODUCING NEW INDOLDER DERIVATIVES

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