GB2021803A - Improvements in or Relating to Optical Apparatus - Google Patents

Improvements in or Relating to Optical Apparatus

Info

Publication number
GB2021803A
GB2021803A GB7916827A GB7916827A GB2021803A GB 2021803 A GB2021803 A GB 2021803A GB 7916827 A GB7916827 A GB 7916827A GB 7916827 A GB7916827 A GB 7916827A GB 2021803 A GB2021803 A GB 2021803A
Authority
GB
United Kingdom
Prior art keywords
light
hologram
diffraction grating
optical apparatus
image
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
GB7916827A
Other versions
GB2021803B (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.)
Qioptiq Ltd
Original Assignee
Pilkington PE 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
Application filed by Pilkington PE Ltd filed Critical Pilkington PE Ltd
Priority to GB7916827A priority Critical patent/GB2021803B/en
Publication of GB2021803A publication Critical patent/GB2021803A/en
Application granted granted Critical
Publication of GB2021803B publication Critical patent/GB2021803B/en
Expired 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
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
    • G02B23/18—Housings; Caps; Mountings; Supports, e.g. with counterweight for binocular arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements

Abstract

In optical apparatus for biocular viewing light from an object is transmitted through a first diffraction grating or hologram which produces two diverging collimated light beams and a further diffraction grating or hologram is disposed in one or both diverging beam paths to direct light to a respective eye position so that an observer can see with both eyes a magnified image of the object. Preferably there is a collimating magnifier lens between the object and the first diffraction grating or hologram but alternatively the latter may be a holographic lens. The apparatus can be used for low light level or night vision equipment and can be sufficiently small and light in weight for head mounting. <IMAGE>
GB7916827A 1978-05-24 1979-05-15 Optical apparatus Expired GB2021803B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7916827A GB2021803B (en) 1978-05-24 1979-05-15 Optical apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2203578 1978-05-24
GB7916827A GB2021803B (en) 1978-05-24 1979-05-15 Optical apparatus

Publications (2)

Publication Number Publication Date
GB2021803A true GB2021803A (en) 1979-12-05
GB2021803B GB2021803B (en) 1982-06-09

Family

ID=26255669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916827A Expired GB2021803B (en) 1978-05-24 1979-05-15 Optical apparatus

Country Status (1)

Country Link
GB (1) GB2021803B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484658A1 (en) * 1980-06-12 1981-12-18 Sopelem BINOCULAR GLASSES
US4730912A (en) * 1983-11-16 1988-03-15 Telecommunications Radioelectriques Et Telephoniques Distortionless sight utilizing holographic components
US7492512B2 (en) 2004-07-23 2009-02-17 Mirage International Ltd. Wide field-of-view binocular device, system and kit
US7499216B2 (en) * 2004-07-23 2009-03-03 Mirage Innovations Ltd. Wide field-of-view binocular device
US7573640B2 (en) 2005-04-04 2009-08-11 Mirage Innovations Ltd. Multi-plane optical apparatus
USRE42992E1 (en) 2003-02-19 2011-12-06 Mirage Innovations Ltd. Chromatic planar optic display system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484658A1 (en) * 1980-06-12 1981-12-18 Sopelem BINOCULAR GLASSES
EP0042324A1 (en) * 1980-06-12 1981-12-23 Societe D'optique, Precision Electronique Et Mecanique - Sopelem Device for binocular observation especially for telescope
US4730912A (en) * 1983-11-16 1988-03-15 Telecommunications Radioelectriques Et Telephoniques Distortionless sight utilizing holographic components
USRE42992E1 (en) 2003-02-19 2011-12-06 Mirage Innovations Ltd. Chromatic planar optic display system
US7492512B2 (en) 2004-07-23 2009-02-17 Mirage International Ltd. Wide field-of-view binocular device, system and kit
US7499216B2 (en) * 2004-07-23 2009-03-03 Mirage Innovations Ltd. Wide field-of-view binocular device
US7573640B2 (en) 2005-04-04 2009-08-11 Mirage Innovations Ltd. Multi-plane optical apparatus

Also Published As

Publication number Publication date
GB2021803B (en) 1982-06-09

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Legal Events

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