GB532575A - Improvements in or connected with gun sights - Google Patents

Improvements in or connected with gun sights

Info

Publication number
GB532575A
GB532575A GB2540839A GB2540839A GB532575A GB 532575 A GB532575 A GB 532575A GB 2540839 A GB2540839 A GB 2540839A GB 2540839 A GB2540839 A GB 2540839A GB 532575 A GB532575 A GB 532575A
Authority
GB
United Kingdom
Prior art keywords
lens
aspherical surface
gun sights
sighting
doubleconvex
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
Application number
GB2540839A
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.)
Thales Optronics Ltd
Original Assignee
Thales Optronics 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 Thales Optronics Ltd filed Critical Thales Optronics Ltd
Priority to GB2540839A priority Critical patent/GB532575A/en
Publication of GB532575A publication Critical patent/GB532575A/en
Priority to ES0180838A priority patent/ES180838A1/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
    • G02B23/14—Viewfinders
    • 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
    • G02B23/10—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors reflecting into the field of view additional indications, e.g. from collimator

Abstract

532,575. Sighting devices. BARR & STROUD, Ltd., and FRENCH, J. W. Sept. 8, 1939, No. 25408. Drawings to Specification. [Class 97 (i)] In a sighting device wherein a transparent screen reflects an illuminated reference mark into the line of sight, a collimating lens system is provided consisting of a single doubleconvex lens having an aspherical surface away from the source of light. The aspherical surface may be paraboloidal or approximately so, and the other surface may be spherical. The lens may be as described in Specification 532,574.
GB2540839A 1939-09-08 1939-09-08 Improvements in or connected with gun sights Expired GB532575A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2540839A GB532575A (en) 1939-09-08 1939-09-08 Improvements in or connected with gun sights
ES0180838A ES180838A1 (en) 1939-09-08 1947-12-10 A LOOK FROM CANON

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2540839A GB532575A (en) 1939-09-08 1939-09-08 Improvements in or connected with gun sights

Publications (1)

Publication Number Publication Date
GB532575A true GB532575A (en) 1941-01-27

Family

ID=10227191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2540839A Expired GB532575A (en) 1939-09-08 1939-09-08 Improvements in or connected with gun sights

Country Status (2)

Country Link
ES (1) ES180838A1 (en)
GB (1) GB532575A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596522A (en) * 1950-06-10 1952-05-13 Clarence E Bethke Illuminated gun sight

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596522A (en) * 1950-06-10 1952-05-13 Clarence E Bethke Illuminated gun sight

Also Published As

Publication number Publication date
ES180838A1 (en) 1948-01-16

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