FR2379081A1 - Optical device for telescope - has objective lens and eyepiece to increase magnification without increase in size of instrument - Google Patents

Optical device for telescope - has objective lens and eyepiece to increase magnification without increase in size of instrument

Info

Publication number
FR2379081A1
FR2379081A1 FR7702698A FR7702698A FR2379081A1 FR 2379081 A1 FR2379081 A1 FR 2379081A1 FR 7702698 A FR7702698 A FR 7702698A FR 7702698 A FR7702698 A FR 7702698A FR 2379081 A1 FR2379081 A1 FR 2379081A1
Authority
FR
France
Prior art keywords
increase
eyepiece
magnification
optical device
instrument
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.)
Withdrawn
Application number
FR7702698A
Other languages
French (fr)
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
Priority to FR7702698A priority Critical patent/FR2379081A1/en
Publication of FR2379081A1 publication Critical patent/FR2379081A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)
  • Lenses (AREA)

Abstract

An optical device, esp. for a telescope can increase magnification without increasing the size of the instrument. The optical device has an objective lens (4) which is used in conjunction with the eyepiece (6) of the main instrument. The eyepiece (6) and the objective (4) are mounted in a tube (3). The device also has an eyepiece (9) on a carrier (10) fitted to the tube (3). If the main instrument provides a magnification of 50, and the optical device gives a magnification of 10, the whole may give a magnification of 500. The device may be added to the Newton, Cassegrain or Schmidt-Cassegrain telescopic types.
FR7702698A 1977-02-01 1977-02-01 Optical device for telescope - has objective lens and eyepiece to increase magnification without increase in size of instrument Withdrawn FR2379081A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7702698A FR2379081A1 (en) 1977-02-01 1977-02-01 Optical device for telescope - has objective lens and eyepiece to increase magnification without increase in size of instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7702698A FR2379081A1 (en) 1977-02-01 1977-02-01 Optical device for telescope - has objective lens and eyepiece to increase magnification without increase in size of instrument

Publications (1)

Publication Number Publication Date
FR2379081A1 true FR2379081A1 (en) 1978-08-25

Family

ID=9186114

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7702698A Withdrawn FR2379081A1 (en) 1977-02-01 1977-02-01 Optical device for telescope - has objective lens and eyepiece to increase magnification without increase in size of instrument

Country Status (1)

Country Link
FR (1) FR2379081A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse