Patent EP0069575A2 successfully refreshed from Google Patents.
EP0069575A2
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EP
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Improved collimator gun sight
Assignee: Ring Sights Ltd
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Filing: 1982-07-05
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Granted: —
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Expires: 2002-07-05
Abstract
Abstract A collimator gun sight has a partially reflecting concave mirror (16) focusing an image at infinity of an aiming mark (19) superimposed on the target field. The aiming mark is a composite pattern having a reflective part and a transmissive part. Ambient light (23) illuminates one part and artificial light (22) the other providing a sight suitable for day and night use. -
Inventors
- 👤 Raymond George Budden
- 👤 Fraser Scott
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:17
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/14; F; F41; F41G; F41G1/00; F41G1/30; G02B23/02; G02B23/10; G02B27/00; G02B27/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
141 words
A collimator gun sight having means defining a partially reflective transparent concave surface (16:38), means defining a graticule pattern (19:41) substantially on the focal plane of the concave surface whereby a virtual image of the graticule pattern, forming an aiming mark, can be seen reflected in the concave surface superimposed on the target viewed along a line of sight (18:40) through the surface, characterised in that said graticule pattern defining means defines a composite pattern having a reflective part (64,65) to reflect light towards said concave surface and a transmissive part (61,62,63); means for directing ambient light (21:42) from the target field to illuminate one said part of the graticule pattern from one side thereof; and a source of artificial light (23:44) located to direct artificial light to illuminate the other said part_of the graticule pattern from the other side thereof.
Claim 2
Dependent Claim
141 words
A collimator gun sight having means defining a partially reflective transparent concave surface (16:38), means defining a graticule pattern (19:41) substantially on the focal plane of the concave surface whereby a virtual image of the graticule pattern, forming an aiming mark, can be seen reflected in the concave surface superimposed on the target viewed along a line of sight (18:40) through the surface, characterised in that said graticule pattern defining means defines a composite pattern having a reflective part (64,65) to reflect light towards said concave surface and a transmissive part (61,62,63); means for directing ambient light (21:42) from the target field to illuminate one said part of the graticule pattern from one side thereof; and a source of artificial light (23:44) located to direct artificial light to illuminate the other said part_of the graticule pattern from the other side thereof.
Claim 3
Dependent Claim
26 words
A gun sight as claimed in Claim 1, wherein said one said part is the reflective part and said other said part is the transmissive part.
Claim 4
Dependent Claim
26 words
A gun sight as claimed in Claim 1, wherein said one said part is the transmissive part and said other said part is the reflective part.
Claim 5
Dependent Claim
74 words
A gun sight as claimed in Claim 2 or Claim 3, and comprising an elongate block (10:30) of solid transparent material of substantially uniform refractive index formed with an opposed pair of plane parallel outer end faces so that the target can be viewed along the line of sight substantially undeviated; the block having, within its body, said means defining a partially reflective transparent concave surface adjacent a distal one of said end faces.
Claim 6
Dependent Claim
69 words
A gun sight as claimed in Claim 4, as dependent on Claim 2, wherein said graticule pattern defining means (19) is located adjacent a proximal one (12) of said end faces and off the line of sight C18), the concave surface (16) having its optical centre on the line of sight and being symmetrical about its optical axis (17) which is at an angle to the line of sight.
Claim 7
Dependent Claim
45 words
A gun sight as claimed in Claim 5, wherein said means for directing ambient light comprises a window (21) adjacent said distal end face arranged to admit ambient light from the target field into the block to illuminate the reflective part of the graticule pattern.
Claim 8
Dependent Claim
38 words
A gun sight as claimed in Claim 6, wherein the reflective surface or surfaces of the reflective part of the graticule pattern are angled to provide specular reflection of ambient light from said window towards said concave surface.
Claim 9
Dependent Claim
56 words
A gun sight as claimed in any of Claims 5 to 7- wherein said source (23) of artificial light is located at said proximal end face on the side of the graticule pattern opposite to said window, whereby artificial light from said source can shine through said transmissive part of the pattern towards the concave surface.
Claim 10
Dependent Claim
70 words
A gun sight as claimed in Claim 4 as dependent on Claim 3, wherein said graticule pattern defining means (41) is located adjacent said distal end face (39), whereby ambient light from the target field can pass through the transmissive part of the graticule pattern and along the block, and said block has plane mirror means (32) to reflect light from the graticule pattern defining means into said concave surface.
Claim 11
Dependent Claim
39 words
A-gun sight as claimed in Claim 9, wherein said mirror means (32) is formed by an outer surface portion of the block adjacent a proximal one (34) of said pair of end faces and off the line of sight.
Claim 12
Dependent Claim
50 words
.. A gun sight as claimed in Claim 10, wherein the concave surface has its optical centre on the line of sight and is symmetrical about its optical axis (37) which is at an angle to the line of sight and parallel to the normal to said outer surface portion.
Claim 13
Dependent Claim
73 words
A gun sight as claimed in any of Claims 9 to 11, wherein said source (44) of artificial light is located on the same side of the graticule pattern as said mirror means but off the direct path between them so as not to obscure the image of the graticule pattern, whereby arti± ficial light from the source can be reflected by the reflective part of the graticule pattern towards said mirror means.
Claim 14
Dependent Claim
44 words
A gun sight as claimed in Claim 12, wherein the reflective surface or surfaces of the reflective part of the graticule pattern are angled to provide specular reflection of artificial light from said source towards said mirror means and thence into the concave surface.
Claim 15
Dependent Claim
54 words
A gun sight as claimed in Claim 13, wherein the block has a prismatic extension (50) adjacent the distal end face to provide a surface suitably angled and located relative to the graticule pattern to allow light from said source (51) to enter the block to illuminate the reflective part of the graticule pattern.
Claim 16
Dependent Claim
26 words
A gun sight as claimed in any preceding claim wherein the artificial light source is a radio-active light source encapsulated in an envelope of transparent material.
Claim 17
Dependent Claim
73 words
A.gun sight as claimed in many preceding claim wherein the artificial light source comprises an extended light emitting surface capable of acting as a diffusely reflecting surface and the sight includes means for directing ambient light from the sky to illuminate said light emitting surface to provide enhanced illumination of said other said part of the graticule pattern for use in conditions of high ambient light level but relatively low target field illumination.
References Cited (Backward Citations)
No citation records indexed.
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