GB791566A - An optical instrument for aiming direct-firing firearms - Google Patents
An optical instrument for aiming direct-firing firearmsInfo
- Publication number
- GB791566A GB791566A GB37194/55A GB3719455A GB791566A GB 791566 A GB791566 A GB 791566A GB 37194/55 A GB37194/55 A GB 37194/55A GB 3719455 A GB3719455 A GB 3719455A GB 791566 A GB791566 A GB 791566A
- Authority
- GB
- United Kingdom
- Prior art keywords
- target
- sight
- weapon
- objective
- coincidence
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
- F41G3/06—Aiming or laying means with rangefinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
- F41G3/32—Devices for testing or checking
- F41G3/323—Devices for testing or checking for checking the angle between the muzzle axis of the gun and a reference axis, e.g. the axis of the associated sighting device
Abstract
791,566. Aiming devices for ordnance and smallarms. COEYTAUX, G., DERAMOND M., and HUGUES, E. Dec. 29, 1955 [Dec. 29, 1954], No. 37194/55. Classes 92 and 119. [Also in Group XX] A coincidence rangefinder having two spaced objectives of different focal lengths, coincidence of the images of a target being effected by rotation of the instrument about an axis perpendicular to the ranging plane, is mounted substantially vertically on a firing weapon to act as a sight, the focal length of at least one of the objectives varying with the target distance in such a way that rotation of the weapon and sight about a horizontal axis to effect coincidence of the images of the target gives the weapon the appropriate elevation for firing. Fig. 7 shows the rangefinder 7 mounted on the barrel of a rocket - launcher by means of a wedge 12 to set the sight and weapon for a target at a standard distance. The theoretical basis of the invention is described in the Specification Fig. 3 shows in elevation and Fig. 4 in plan the optical system of the rangefinder sight. The beam 1 from the target incident on the window F 1 of the sight is reflected by a prism P 1 to the entrance-pupil diaphragm D 1 of an objective O 1 whence it passes via the objective O 1 , Amici prism P 2 and rhombohedral prism P 3 to form an image adjacent a doublet O 2 having a strongly curved cemented surface and which is designed according to ballistic curve of the weapon to give the desired variation of focal length of the objective system O 1 O 2 with target distance. Numerical data are given for one such system. Light from this image reaches the eyepiece O c through an aperture 6 in reflecting surface 5 between prisms P and P 4 . The other target beam 2, incidence on the window F 21 , passes the second objective O 21 and is reflected by prisms P 21 , P and surface 5 to form an image in th'e eyepiece O c which surrounds the image formed by the other objective so that coincidence of the images may be readily observed. A scale indicating the range may be formed on the reflecting surface 5.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1117609T | 1954-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB791566A true GB791566A (en) | 1958-03-05 |
Family
ID=9630107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37194/55A Expired GB791566A (en) | 1954-12-29 | 1955-12-29 | An optical instrument for aiming direct-firing firearms |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1117609A (en) |
GB (1) | GB791566A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3990355A (en) * | 1973-11-21 | 1976-11-09 | The United States Of America As Represented By The Secretary Of The Army | Anti-tank rocket launcher |
GB2148533A (en) * | 1983-10-13 | 1985-05-30 | Messerschmitt Boelkow Blohm | Image enhancer for thermal imaging device |
GB2154332A (en) * | 1984-01-24 | 1985-09-04 | Robert Kelvin Newton | Optical sight |
USD406304S (en) | 1998-03-30 | 1999-03-02 | Elliott Dennis A | Sun shade for sight |
-
1954
- 1954-12-29 FR FR1117609D patent/FR1117609A/en not_active Expired
-
1955
- 1955-12-29 GB GB37194/55A patent/GB791566A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3990355A (en) * | 1973-11-21 | 1976-11-09 | The United States Of America As Represented By The Secretary Of The Army | Anti-tank rocket launcher |
GB2148533A (en) * | 1983-10-13 | 1985-05-30 | Messerschmitt Boelkow Blohm | Image enhancer for thermal imaging device |
GB2154332A (en) * | 1984-01-24 | 1985-09-04 | Robert Kelvin Newton | Optical sight |
USD406304S (en) | 1998-03-30 | 1999-03-02 | Elliott Dennis A | Sun shade for sight |
Also Published As
Publication number | Publication date |
---|---|
FR1117609A (en) | 1956-05-24 |
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