GB733421A - Film-viewing apparatus - Google Patents

Film-viewing apparatus

Info

Publication number
GB733421A
GB733421A GB185753A GB185753A GB733421A GB 733421 A GB733421 A GB 733421A GB 185753 A GB185753 A GB 185753A GB 185753 A GB185753 A GB 185753A GB 733421 A GB733421 A GB 733421A
Authority
GB
United Kingdom
Prior art keywords
reflector
viewing
lens
bellows
plate
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
GB185753A
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
Priority to GB185753A priority Critical patent/GB733421A/en
Publication of GB733421A publication Critical patent/GB733421A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

733,421. Optical viewing apparatus. ROMANS, A. H. Jan. 19, 1954 [Jan. 22, 1953], No. 1857/53. Class 97 (1). In viewing apparatus in the general form of a pocket torch having a reflector on its front face, means for supporting a transparency to be viewed and detachable means adjacent the reflector for securing a viewing lens, the said detachable means has fast with it one end of an extensible bellows device which, at its other end, supports the viewing lens at an adjustable distance from the transparency. As shown the device comprises a casing 11 containing a light source and reflector behind a glass plate 13, and a bridge member 18 fixed thereto and having upstanding flanges 24 surround the plate 13 and adapted to receive a frame 31 to which one end of an extensible opaque bellows 28 is secured, the other end of the bellows supporting a viewing lens 29. When thus assembled sliders may be inserted through the aperture 38 between the bridge 18 and the casing 11 so as to lie over the plate 13 and be illuminated by the lamp for inspection through the lens 29. For slides smaller than the width of the aperture 38 a suitable metal carrier may be provided.
GB185753A 1953-01-22 1953-01-22 Film-viewing apparatus Expired GB733421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB185753A GB733421A (en) 1953-01-22 1953-01-22 Film-viewing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB185753A GB733421A (en) 1953-01-22 1953-01-22 Film-viewing apparatus

Publications (1)

Publication Number Publication Date
GB733421A true GB733421A (en) 1955-07-13

Family

ID=9729228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB185753A Expired GB733421A (en) 1953-01-22 1953-01-22 Film-viewing apparatus

Country Status (1)

Country Link
GB (1) GB733421A (en)

Similar Documents

Publication Publication Date Title
ES444075A1 (en) Blood typing installations
GB733421A (en) Film-viewing apparatus
GB820215A (en) Improvements relating to microscopes and microprojectors
GB719899A (en) Improvements relating to constant-light sources
US1514275A (en) Apparatus for projecting advertisements upon and through a screen
GB537151A (en) Improvements in or relating to the mounting of magnifying glasses
ES444923A1 (en) Device for observing narrow films. (Machine-translation by Google Translate, not legally binding)
ES200248A3 (en) Device for optical reading applicable to precision analytical balances (Machine-translation by Google Translate, not legally binding)
GB748289A (en) An improved optical instrument
GB415177A (en) Improved equipment for the recording of sound on talking picture films
GB1107945A (en) Improvements relating to indicating instruments
GB1138181A (en) Photographic copying apparatus
GB888961A (en) Still picture projector with device for enlargement of sections of the projected image
ES59502U (en) Projection kaleidoscope (Machine-translation by Google Translate, not legally binding)
GB726926A (en) Improvements in or relating to electronic flash light photography
ES48018U (en) Portable removable viewfinder for transparencies (Machine-translation by Google Translate, not legally binding)
GB387998A (en) Light advertising device
GB716567A (en) Photographic enlarger with automatic focussing
GB761636A (en) Improvements in or relating to arrangements comprising an x-ray device having an x-ray image intensifier tube
ES216129A1 (en) Portaobjetos for apparatus projectors of epi and diascopic profiles (Machine-translation by Google Translate, not legally binding)
ES219117A1 (en) Improvements in the portaobjectives for large wrap extensions (Machine-translation by Google Translate, not legally binding)
GB591695A (en) Improvements relating to photographic cameras
GB1207498A (en) An improved illuminating and magnifying viewing device
GB786814A (en) Improvements in apparatus for measuring radiation intensity
GB765596A (en) Improvements in photogphic enlargers