GB496257A - Improved means for use in the demonstration of optical systems and apparatus - Google Patents

Improved means for use in the demonstration of optical systems and apparatus

Info

Publication number
GB496257A
GB496257A GB1852237A GB1852237A GB496257A GB 496257 A GB496257 A GB 496257A GB 1852237 A GB1852237 A GB 1852237A GB 1852237 A GB1852237 A GB 1852237A GB 496257 A GB496257 A GB 496257A
Authority
GB
United Kingdom
Prior art keywords
rays
optical systems
slits
pair
demonstration
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
GB1852237A
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.)
ROBERT KERR BLACK
Original Assignee
ROBERT KERR BLACK
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 ROBERT KERR BLACK filed Critical ROBERT KERR BLACK
Priority to GB1852237A priority Critical patent/GB496257A/en
Publication of GB496257A publication Critical patent/GB496257A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Instructional Devices (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

496,257. Educational appliances. BLACK, R. K. July 3, 1937, No. 18522. [Class 146 (ii)] [Also in Group XX] Apparatus for demonstrating the properties of optical systems comprises a pair of pivotally mounted mirrors 13, 14 so arranged in front of an opaque baffle 9 with slits 10, 11, 11a, 12, 12a, through which parallel light passes from a suitable source that certain of the rays are deflected to intersect the undeflected rays and so define the position of an imaginary object at PQ. The system of rays thus produced is passed through the desired lens or other optical system and the formation of the image P<1>Q<1> may be observed. In an alternative arrangement each pair of slits 11, 11a, 12, 12a is replaced by a wide slit and the mirrors are arranged to deflect only part of the light issuing therefrom.
GB1852237A 1937-07-03 1937-07-03 Improved means for use in the demonstration of optical systems and apparatus Expired GB496257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1852237A GB496257A (en) 1937-07-03 1937-07-03 Improved means for use in the demonstration of optical systems and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1852237A GB496257A (en) 1937-07-03 1937-07-03 Improved means for use in the demonstration of optical systems and apparatus

Publications (1)

Publication Number Publication Date
GB496257A true GB496257A (en) 1938-11-28

Family

ID=10113867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1852237A Expired GB496257A (en) 1937-07-03 1937-07-03 Improved means for use in the demonstration of optical systems and apparatus

Country Status (1)

Country Link
GB (1) GB496257A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450965A (en) * 1943-10-29 1948-10-12 Combined Optical Ind Ltd Method of determining correct curvatures of lenses and spacings thereof
US2881536A (en) * 1958-03-21 1959-04-14 Sprecher Roland Otto Means for demonstrating optical refraction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450965A (en) * 1943-10-29 1948-10-12 Combined Optical Ind Ltd Method of determining correct curvatures of lenses and spacings thereof
US2881536A (en) * 1958-03-21 1959-04-14 Sprecher Roland Otto Means for demonstrating optical refraction

Similar Documents

Publication Publication Date Title
GB496257A (en) Improved means for use in the demonstration of optical systems and apparatus
GB783315A (en) Improvements in and relating to spectacles
GB361793A (en) Improvements in projection objectives
GB802482A (en) An optical apparatus comprising a focusing device
GB510412A (en) Improvements in or relating to illumination means for optical projection
GB682350A (en) Vision testing device
GB561597A (en) Improvements in or relating to optical systems
GB496492A (en) Improvements in and relating to display means
GB535289A (en) Improvements in or relating to optical systems for or in photographic projection printing apparatus
US2026522A (en) Stock quotation projecting device
GB390508A (en) Improvements in or relating to stereoscopic motion picture systems
GB497691A (en) Stereoscopic television
GB514673A (en) Cinematograph film projection systems
GB325854A (en) Improvements in or relating to television and like systems and apparatus
GB692781A (en) Improvements in or relating to stereoscopy
GB513452A (en) Improved lens system
GB348211A (en) Improvements in or relating to television and like systems and apparatus
GB329438A (en) Improvements in or relating to the projection of pictures in natural colours
GB1176812A (en) Binocular Sight Testing Apparatus.
GB296413A (en) Improvements in and relating to illuminating systems for optical projection apparatus
GB543802A (en) Improvements in or relating to means for modulating a light beam
GB398867A (en) Improvements in and connected with gauge glasses and the like
GB698641A (en) Improvements in or relating to microscopes and illuminating systems therefor
GB431256A (en) Improvements in devices for adjusting an eye to be examined
GB404307A (en) Improvements in optical systems for photography or kinematography particularly in colour