GB896540A - Improvements relating to optical joints - Google Patents

Improvements relating to optical joints

Info

Publication number
GB896540A
GB896540A GB3849/60A GB384960A GB896540A GB 896540 A GB896540 A GB 896540A GB 3849/60 A GB3849/60 A GB 3849/60A GB 384960 A GB384960 A GB 384960A GB 896540 A GB896540 A GB 896540A
Authority
GB
United Kingdom
Prior art keywords
slot
slide
eyepiece
sector
cover slide
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
GB3849/60A
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.)
Optische Industrie de Oude Delft NV
Original Assignee
Optische Industrie de Oude Delft 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 Optische Industrie de Oude Delft NV filed Critical Optische Industrie de Oude Delft NV
Publication of GB896540A publication Critical patent/GB896540A/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)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Telescopes (AREA)

Abstract

896,540. Optical joints. OPTISCHE INDUSTRIE DE OUDE DELFT N.V. Feb. 3, 1960 [Feb. 3, 1959], No. 3849/60. Class 97(1). An optical joint between a first pivotable tubular member and a second member includes a plane mirror carried by said second member and so linked to the pivotable member that it rotates by one half of the amount of the pivotable member which latter rides on an arcuate slide track on the said second member having a slot for the passage of light therethrough, a cover slide fixed to the mirror (and fitting closely to the slide track) helping to prevent outward passage of light through the marginal portions of the slot, and a hood attached to the pivotable member covering those regions of the slot not traversed by a light beam through the optical system and not covered by the cover slide. As shown in Figs. 3 and 4 a mirror 12 is attached to a cover slide 6 formed by two sector shaped plates 7, 8 and end plates 9, 10 terminating in ledges 19, 18 and defining an aperture 11, said cover slide being pivotably mounted in a part 3 of an optical apparatus for pivoting about an axis M through the plane of the mirror. In sector 8 there is a spiral slot 16 and in the adjacent and parallel housing wall of 3 there is a linear slot 17. An eyepiece 1 carries a hood 2 which can cover part of an opening 5 in the slide track 4 of the fixed part 3 of the apparatus, and which includes a portion parallel to sector 8 and having a spiral slot 15 of half the curvature of slot 16 in the sector 8. A pin 20 engages all three slots so that rotation of the eyepiece 1 causes a rotation in the cover slide 6 of half that of the eyepiece. A ray 14 will thus always be directed along the eyepiece axis. The cover slide and hood dimension are such that in an extreme position, as in Fig. 3, both co-operate to close the wide margin of the slot, the ledges 18 and 19 preventing the exit of tangential rays.
GB3849/60A 1959-02-03 1960-02-03 Improvements relating to optical joints Expired GB896540A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL896540X 1959-02-03

Publications (1)

Publication Number Publication Date
GB896540A true GB896540A (en) 1962-05-16

Family

ID=19856181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3849/60A Expired GB896540A (en) 1959-02-03 1960-02-03 Improvements relating to optical joints

Country Status (1)

Country Link
GB (1) GB896540A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368919A (en) * 2000-10-02 2002-05-15 Longperng Co Ltd Revolving optical eyepiece with revolving plane mirror

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368919A (en) * 2000-10-02 2002-05-15 Longperng Co Ltd Revolving optical eyepiece with revolving plane mirror

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