GB791275A - - Google Patents

Info

Publication number
GB791275A
GB791275A GB791275DA GB791275A GB 791275 A GB791275 A GB 791275A GB 791275D A GB791275D A GB 791275DA GB 791275 A GB791275 A GB 791275A
Authority
GB
United Kingdom
Prior art keywords
frame
radiograph
housing
sept
behind
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.)
Active
Application number
Publication of GB791275A publication Critical patent/GB791275A/en
Active legal-status Critical Current

Links

Landscapes

  • Apparatus For Radiation Diagnosis (AREA)

Abstract

791,275. Viewers for radiography. BOURNE, A. T. Sept. 6, 1955 [Sept. 10, 1954], No. 26295/54. Class 98(2) A viewer for radiographs comprises a movable panel supporting the radiograph and a fixed mask illuminated from behind and having a fixed aperture, so any part of the radiograph of the size of the aperture may be viewed. As shown, the radiograph is held in contact with a clear glass panel B mounted on a frame A by clips C. Frame A slides horizontally on a frame J by means of carriages D, while the frame J is itself slidable 'vertically in guides E on a housing I. An apertured mask F, backed by an opal glass sheet, is mounted in the housing behind the panel B and is illuminated by lamps mounted in housing I.
GB791275D Active GB791275A (en)

Publications (1)

Publication Number Publication Date
GB791275A true GB791275A (en)

Family

ID=1752115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB791275D Active GB791275A (en)

Country Status (1)

Country Link
GB (1) GB791275A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852134A (en) * 1986-02-04 1989-07-25 Orion-Yhtyma Oy Method and apparatus for radiography of the dental, jaw, and skull regions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852134A (en) * 1986-02-04 1989-07-25 Orion-Yhtyma Oy Method and apparatus for radiography of the dental, jaw, and skull regions

Similar Documents

Publication Publication Date Title
EP0844640A3 (en) Image display apparatus
US4775918A (en) Mask system for radiograph light box
CN102045524A (en) Super-resolution large-screen display system
EP0717902B1 (en) Scanner for scanning and viewing x-ray film and reflective media
EP1098225A3 (en) Lithographic projection apparatus with purge gas system and method using the same
US3896603A (en) Film strip jacket system and equipment
GB791275A (en)
US6119380A (en) Transparency viewing apparatus
US20070064408A1 (en) Illumination unit and liquid crystal display device using the same
KR930005465A (en) Image Projection and Projection Display
ES8503442A1 (en) Optical displays.
EP0734540B1 (en) A self masking display device
US3988063A (en) Form slide locating apparatus for use in computer output microfilmers
US3824339A (en) Prompting device for lecturers and television announcers
ES265820U (en) Film guide,particularly for projection apparatus,viewer,enlargement apparatus,etc.
US3028785A (en) Apparatus for facilitating the reproduction or
GB1467666A (en) Electrophotographic apparatus
US3498708A (en) Photocopying apparatus
IL43187A (en) Optical multiple projector
US2098941A (en) Projection system
GB1380893A (en) Ultramicrofiche viewer with pantograph connection between infor mation locater and fiche carrying x-y table
GB1280977A (en) Optical projection device
EP0481131A1 (en) Contact exposure apparatus
GB1457545A (en) Film reader
GB810181A (en) Television apparatus