GB2271434B - Optical system especially for binoculars and other viewing instruments - Google Patents

Optical system especially for binoculars and other viewing instruments

Info

Publication number
GB2271434B
GB2271434B GB9313089A GB9313089A GB2271434B GB 2271434 B GB2271434 B GB 2271434B GB 9313089 A GB9313089 A GB 9313089A GB 9313089 A GB9313089 A GB 9313089A GB 2271434 B GB2271434 B GB 2271434B
Authority
GB
United Kingdom
Prior art keywords
binoculars
optical system
system especially
viewing instruments
instruments
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 - Fee Related
Application number
GB9313089A
Other versions
GB2271434A (en
GB9313089D0 (en
Inventor
Michael Harold Freeman
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.)
Optics and Vision Ltd
Original Assignee
Optics and Vision Ltd
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 GB929218325A external-priority patent/GB9218325D0/en
Priority claimed from GB929219559A external-priority patent/GB9219559D0/en
Application filed by Optics and Vision Ltd filed Critical Optics and Vision Ltd
Priority to GB9313089A priority Critical patent/GB2271434B/en
Publication of GB9313089D0 publication Critical patent/GB9313089D0/en
Publication of GB2271434A publication Critical patent/GB2271434A/en
Application granted granted Critical
Publication of GB2271434B publication Critical patent/GB2271434B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • 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
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0812—Catadioptric systems using two curved mirrors off-axis or unobscured systems in which all of the mirrors share a common axis of rotational symmetry
    • 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
    • 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
    • G02B27/0018—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for preventing ghost images
    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/281—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for attenuating light intensity, e.g. comprising rotatable polarising elements
GB9313089A 1992-08-28 1993-06-25 Optical system especially for binoculars and other viewing instruments Expired - Fee Related GB2271434B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9313089A GB2271434B (en) 1992-08-28 1993-06-25 Optical system especially for binoculars and other viewing instruments

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB929218325A GB9218325D0 (en) 1992-08-28 1992-08-28 Binocularscamera combination
GB929219559A GB9219559D0 (en) 1992-09-16 1992-09-16 Optical system especially for binocholars
GB9313089A GB2271434B (en) 1992-08-28 1993-06-25 Optical system especially for binoculars and other viewing instruments

Publications (3)

Publication Number Publication Date
GB9313089D0 GB9313089D0 (en) 1993-08-11
GB2271434A GB2271434A (en) 1994-04-13
GB2271434B true GB2271434B (en) 1997-03-05

Family

ID=27266338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9313089A Expired - Fee Related GB2271434B (en) 1992-08-28 1993-06-25 Optical system especially for binoculars and other viewing instruments

Country Status (1)

Country Link
GB (1) GB2271434B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10235553A1 (en) * 2002-08-03 2004-02-19 Steiner-Optik Gmbh binoculars

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB215331A (en) * 1923-05-05 1925-01-15 Ludwig Buenger Binoculars
GB983429A (en) * 1960-03-02 1965-02-17 Farrand Optical Co Inc Improved optical systems
US3879105A (en) * 1974-04-04 1975-04-22 Jenoptik Jena Gmbh Telescope with an image reversing system
US3985421A (en) * 1972-12-04 1976-10-12 Beecher William J Binocular having small size, lightweight, and high performance characteristic
GB2116745A (en) * 1982-03-17 1983-09-28 Magyar Optikai Muevek Level instrument with telescope
US4488790A (en) * 1982-01-29 1984-12-18 Beecher William J Binocular and spectacle-type mounting assembly therefor
WO1991002995A1 (en) * 1989-08-22 1991-03-07 Stroemberg Rolf A method of arranging the ray path in an optical instrument

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB215331A (en) * 1923-05-05 1925-01-15 Ludwig Buenger Binoculars
GB983429A (en) * 1960-03-02 1965-02-17 Farrand Optical Co Inc Improved optical systems
US3985421A (en) * 1972-12-04 1976-10-12 Beecher William J Binocular having small size, lightweight, and high performance characteristic
US3879105A (en) * 1974-04-04 1975-04-22 Jenoptik Jena Gmbh Telescope with an image reversing system
US4488790A (en) * 1982-01-29 1984-12-18 Beecher William J Binocular and spectacle-type mounting assembly therefor
GB2116745A (en) * 1982-03-17 1983-09-28 Magyar Optikai Muevek Level instrument with telescope
WO1991002995A1 (en) * 1989-08-22 1991-03-07 Stroemberg Rolf A method of arranging the ray path in an optical instrument

Also Published As

Publication number Publication date
GB2271434A (en) 1994-04-13
GB9313089D0 (en) 1993-08-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990625