[go: up one dir, main page]

GB315825A - Improvements in and relating to optical instruments for use in connection with the examination of the eye - Google Patents

Improvements in and relating to optical instruments for use in connection with the examination of the eye

Info

Publication number
GB315825A
GB315825A GB18397/29A GB1839729A GB315825A GB 315825 A GB315825 A GB 315825A GB 18397/29 A GB18397/29 A GB 18397/29A GB 1839729 A GB1839729 A GB 1839729A GB 315825 A GB315825 A GB 315825A
Authority
GB
United Kingdom
Prior art keywords
eye
examination
frame
relating
connection
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
GB18397/29A
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
Publication of GB315825A publication Critical patent/GB315825A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

315,825. Pascal, J. I. July 19, 1928, [Convention date]. Eye-examining apparatus. -To enable the examination of the eye to be carried out under relaxed accommodation a source of illumination 8 is utilized in conjunction with a diaphragm 10 and a focussing lens 9, all of which are carried in a mount 6 supported on a frame 5. The frame 5 also carries an angularly disposed mirror 12 by which the rays are reflected into the eye E, the lens 9 being adjusted so that the source of light appears at a great distance. Blue-violet light may be utilized and the frame 5 made adjustable in a stand 2.
GB18397/29A 1928-07-19 1929-07-14 Improvements in and relating to optical instruments for use in connection with the examination of the eye Expired GB315825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US315825XA 1928-07-19 1928-07-19

Publications (1)

Publication Number Publication Date
GB315825A true GB315825A (en) 1930-07-31

Family

ID=21860267

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18397/29A Expired GB315825A (en) 1928-07-19 1929-07-14 Improvements in and relating to optical instruments for use in connection with the examination of the eye

Country Status (1)

Country Link
GB (1) GB315825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123975A (en) * 1982-03-26 1984-02-08 Zeiss Stiftung Device for sharp-edge illumination of an observation field lying in a preselectable plane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123975A (en) * 1982-03-26 1984-02-08 Zeiss Stiftung Device for sharp-edge illumination of an observation field lying in a preselectable plane

Similar Documents

Publication Publication Date Title
GB1239359A (en)
US1934582A (en) Projection apparatus
GB315825A (en) Improvements in and relating to optical instruments for use in connection with the examination of the eye
GB1446869A (en) Ophthalmometers
GB1012838A (en) Illuminating device for opthalmoscope
GB638493A (en) Improvements in apparatus for observing objects on an enlarged scale
GB570022A (en) A projection system for the inspection of internal surfaces
GB665531A (en) Improvements in or relating to ophthalmoscopes and like instruments for inspecting the fundus of the eye
GB228354A (en) Improvements in magnifying lenses
GB326053A (en) Improvements in or relating to eye-testing apparatus
GB210472A (en) One-picture stereoscope
GB228125A (en) Improvements in optical apparatus for educational purposes
GB384605A (en) Improvements in instruments for rapid examination of transparent microscopic preparat
GB349135A (en) Improvements in mirrors
SU60130A1 (en) The method of determining the quality of the shape of the surface of the front lens microscopic
GB430508A (en) Improvements in or relating to optical copying apparatus
GB392321A (en) Improvements in methods of improving the quality of images in optical instruments
GB489577A (en) Improvements in or relating to sight testing or like apparatus
GB219968A (en)
Knoll An infra-red skiascope and other infra-red ophthalmic research instruments
GB393892A (en) Improvements in devices for examining the diameter of bores
GB288302A (en) Hand magnifying glass with electric illumination between the lenses
GB428694A (en) Improvements in or in connection with optical magnifying apparatus
GB552875A (en) Measuring microscope
GB386281A (en) Improvements in apparatus for illuminating microscopic objects