FR3082319B1 - OBJECTIVE FOR FOCUSING IMAGES - Google Patents

OBJECTIVE FOR FOCUSING IMAGES Download PDF

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Publication number
FR3082319B1
FR3082319B1 FR1870673A FR1870673A FR3082319B1 FR 3082319 B1 FR3082319 B1 FR 3082319B1 FR 1870673 A FR1870673 A FR 1870673A FR 1870673 A FR1870673 A FR 1870673A FR 3082319 B1 FR3082319 B1 FR 3082319B1
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FR
France
Prior art keywords
convex
spherical
lens
radius
objective
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
FR1870673A
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French (fr)
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FR3082319A1 (en
Inventor
Daniel Ait-Yahiatene
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.)
Light Vision Fr
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Individual
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Publication date
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Priority to FR1870673A priority Critical patent/FR3082319B1/en
Publication of FR3082319A1 publication Critical patent/FR3082319A1/en
Application granted granted Critical
Publication of FR3082319B1 publication Critical patent/FR3082319B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00—Eyepieces; Magnifying glasses
    • G02B25/001—Eyepieces
    • 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
    • G02B27/026—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and a display device, e.g. CRT, LCD, for adding markings or signs or to enhance the contrast of the viewed object
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/04—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having two components only
    • G02B9/10—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having two components only one + and one - component
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001—Teaching or communicating with blind persons
    • G09B21/008—Teaching or communicating with blind persons using visual presentation of the information for the partially sighted

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

La présente invention concerne les objectifs de focalisation, sur un récepteur Pu, d'images produites par un afficheur A, le récepteur et l'afficheur étant séparés l'un de l'autre d'une distance DO. L'objectif comportant, centrées sur un axe optique Op, une première lentille 10 concave-convexe et une seconde lentille 20 convexe-convexe, est caractérisé par le fait que la première lentille 10 concave-convexe présente une face avant 11 concave sphérique de rayon R1 et une face arrière 12 convexe sphérique de rayon R2, R1 étant inférieure à R2, les centres de courbure respectivement de ces deux faces sphériques étant confondus, la seconde lentille 20 convexe-convexe présente une face avant 21 convexe sphérique de rayon R3 et une face arrière 22 convexe sphérique de rayon R4, et les centres optiques 14, 23 respectivement de la face arrière 12 de la première lentille 10 et de la face avant 21 de la seconde lentille 20 sont séparés d'une distance D1.The present invention relates to the focusing objectives, on a Pu receiver, of images produced by a display A, the receiver and the display being separated from each other by a distance DO. The objective comprising, centered on an optical axis Op, a first concave-convex lens 10 and a second convex-convex lens 20, is characterized in that the first concave-convex lens 10 has a spherical concave front face 11 of radius R1 and a spherical convex rear face 12 of radius R2, R1 being less than R2, the centers of curvature respectively of these two spherical faces being coincident, the second convex-convex lens 20 has a spherical convex front face 21 of radius R3 and a spherical convex rear face 22 of radius R4, and the optical centers 14, 23 respectively of the rear face 12 of the first lens 10 and of the front face 21 of the second lens 20 are separated by a distance D1.

FR1870673A 2018-06-11 2018-06-11 OBJECTIVE FOR FOCUSING IMAGES Active FR3082319B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1870673A FR3082319B1 (en) 2018-06-11 2018-06-11 OBJECTIVE FOR FOCUSING IMAGES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1870673 2018-06-11
FR1870673A FR3082319B1 (en) 2018-06-11 2018-06-11 OBJECTIVE FOR FOCUSING IMAGES

Publications (2)

Publication Number Publication Date
FR3082319A1 FR3082319A1 (en) 2019-12-13
FR3082319B1 true FR3082319B1 (en) 2021-12-17

Family

ID=63579510

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1870673A Active FR3082319B1 (en) 2018-06-11 2018-06-11 OBJECTIVE FOR FOCUSING IMAGES

Country Status (1)

Country Link
FR (1) FR3082319B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634893A (en) * 1992-07-10 1994-02-10 Sony Corp Ocular
US5886825A (en) * 1997-11-05 1999-03-23 Eastman Kodak Company Magnifier Lens
DE102007015278A1 (en) * 2007-03-29 2008-10-02 Carl Zeiss Ag Optical eyepiece system

Also Published As

Publication number Publication date
FR3082319A1 (en) 2019-12-13

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Owner name: LIGHT VISION, FR

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