FR2238165A1 - Magnifying glass with enlarged observation space - has refractive material between magnifying concave mirror and half-silvered mirror - Google Patents

Magnifying glass with enlarged observation space - has refractive material between magnifying concave mirror and half-silvered mirror

Info

Publication number
FR2238165A1
FR2238165A1 FR7419401A FR7419401A FR2238165A1 FR 2238165 A1 FR2238165 A1 FR 2238165A1 FR 7419401 A FR7419401 A FR 7419401A FR 7419401 A FR7419401 A FR 7419401A FR 2238165 A1 FR2238165 A1 FR 2238165A1
Authority
FR
France
Prior art keywords
mirror
refractive material
magnifying
observation space
silvered
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.)
Granted
Application number
FR7419401A
Other languages
French (fr)
Other versions
FR2238165B1 (en
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.)
WEISS HELMUT US
Original Assignee
WEISS HELMUT US
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
Priority claimed from US380448A external-priority patent/US3914030A/en
Application filed by WEISS HELMUT US filed Critical WEISS HELMUT US
Publication of FR2238165A1 publication Critical patent/FR2238165A1/en
Application granted granted Critical
Publication of FR2238165B1 publication Critical patent/FR2238165B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G02B17/086—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors wherein the system is made of a single block of optical material, e.g. solid catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00—Eyepieces; Magnifying glasses

Landscapes

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

Abstract

The observation space contains all the points from which the magnified virtual picture is fully visible. The index of refraction of the refractive material is greater than unity. The space between the half-silvered mirror, the object and the beam exit surface is filled with the refractive material. The plane mirror can be inclined through 45 deg. relative to the observation axis of the magnifying glass. The concave mirror is close to the surface of the object and the half-silvered mirror. The refractive material is placed between the object, the mirrors and a point on the observation axis which defines the position of an exit surface.
FR7419401A 1973-07-18 1974-06-05 Magnifying glass with enlarged observation space - has refractive material between magnifying concave mirror and half-silvered mirror Granted FR2238165A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US380448A US3914030A (en) 1971-04-12 1973-07-18 Virtual image magnifier system filled with a refractive medium

Publications (2)

Publication Number Publication Date
FR2238165A1 true FR2238165A1 (en) 1975-02-14
FR2238165B1 FR2238165B1 (en) 1978-10-27

Family

ID=23501201

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7419401A Granted FR2238165A1 (en) 1973-07-18 1974-06-05 Magnifying glass with enlarged observation space - has refractive material between magnifying concave mirror and half-silvered mirror

Country Status (7)

Country Link
JP (2) JPS5029049A (en)
AU (1) AU503958B2 (en)
CA (1) CA1026600A (en)
CH (1) CH591092A5 (en)
DE (1) DE2434436C3 (en)
FR (1) FR2238165A1 (en)
IT (1) IT1005984B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028032C2 (en) * 1980-07-24 1982-05-13 Spindler & Hoyer GmbH & Co, 3400 Göttingen High-magnification magnifying glass, especially for viewing microfilm
DE3924932A1 (en) * 1989-07-27 1991-01-31 Sattler Hans Eberhard Observation device for small objects e.g. rare stones - has concave mirror in holder vertically beneath transparent support for observed object
US5224198A (en) * 1991-09-30 1993-06-29 Motorola, Inc. Waveguide virtual image display

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB675549A (en) * 1949-10-28 1952-07-09 Copeland Jacob C Improvements in magnifying viewers
US3216308A (en) * 1961-10-05 1965-11-09 Marvin J Northcutt Aircraft landing sight including collimating mangin mirror and corrector lens

Also Published As

Publication number Publication date
DE2434436A1 (en) 1975-02-06
JPS57146113U (en) 1982-09-14
FR2238165B1 (en) 1978-10-27
DE2434436B2 (en) 1978-12-07
IT1005984B (en) 1976-09-30
DE2434436C3 (en) 1979-08-30
CA1026600A (en) 1978-02-21
AU7117074A (en) 1976-01-15
AU503958B2 (en) 1979-09-27
CH591092A5 (en) 1977-09-15
JPS5029049A (en) 1975-03-24

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Legal Events

Date Code Title Description
ST Notification of lapse