GB605484A - Improvements in or relating to range finders - Google Patents
Improvements in or relating to range findersInfo
- Publication number
- GB605484A GB605484A GB34563/45A GB3456345A GB605484A GB 605484 A GB605484 A GB 605484A GB 34563/45 A GB34563/45 A GB 34563/45A GB 3456345 A GB3456345 A GB 3456345A GB 605484 A GB605484 A GB 605484A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prism
- scale
- range
- vernier
- light
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
- G01C3/12—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument with monocular observation at a single point, e.g. coincidence type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Viewfinders (AREA)
Abstract
605,484. Range-finders. KODAK, Ltd. Dec. 20, 1945, No. 34563. Convention date, Jan. 19, 1943. [Class 97 (i)] In coincidence range-finders in which an image of a one range indicating element is formed adjacent another by light which has passed through at least a portion of the optical system of the range-finder the elements are carried on a movable support and one is a vernier scale for the other. The scale may move linearly or rotate and may be observed in the range-finder eyepieces. The range-finder comprises end prisms 11 and objectives 12 and a central prism system giving two juxtaposed images observed in the eyepiece 18, coincidence being effected by movement of the whole prism system transversely of the axes of lenses 12. A laterally movable glass plate bears a scale 26 illuminated by a lamp 28. The light passes into the prism system via a prism 30 and is reflected thereby to rhomb 15 and collimated by lens 12. It then passes via prism 11 to a small further prism 31 cemented thereto and thence to a similar prism 32 whence it forms an image 26<1> adjacent a vernier 27 via reflector 11, lens 12 and prism 33. The image 26<1> and vernier 27 may be viewed directly or light therefrom reflected into the eyepiece by prism 45. The plate 25 is moved laterally so that the portions of scale vernier which match are in the field of view. Alternatively a circular rotatable plate having concentric scale and vernier may be used. Instead of using prisms 30, 33 the light from the scale may be reflected by the backs of prisms 13, 14. The prism system may be replaced by crossed mirrors. The invention may be applied to coincidence finders of the type described in Specification 605,482. Specifications 605,481, 605,483, 605,485 and 605,486 also are referred to. The Specification as open to inspection under Sect. 91 describes also the modification shown in Fig. 3 of Specification 605,485. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US605484XA | 1943-01-19 | 1943-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB605484A true GB605484A (en) | 1948-07-23 |
Family
ID=22030193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34563/45A Expired GB605484A (en) | 1943-01-19 | 1945-12-20 | Improvements in or relating to range finders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB605484A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239959A (en) * | 1989-11-28 | 1991-07-17 | Crosman Corp | Optical rangefinder |
-
1945
- 1945-12-20 GB GB34563/45A patent/GB605484A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239959A (en) * | 1989-11-28 | 1991-07-17 | Crosman Corp | Optical rangefinder |
| GB2239959B (en) * | 1989-11-28 | 1993-10-27 | Crosman Corp | Optical rangefinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2701501A (en) | Apparatus for testing of centering, coaxiality, alignment | |
| GB605484A (en) | Improvements in or relating to range finders | |
| GB719700A (en) | Method of and apparatus for testing lenses | |
| US3615124A (en) | Apparatus for marking points in photograms | |
| GB130048A (en) | Improvements in or relating to Optical Instruments. | |
| US1475698A (en) | Apparatus for the objective measurement of the refractive value of the principal point of the eye | |
| GB862734A (en) | A prism combination for altering the light path through a camera-microscope | |
| US2401701A (en) | Range finder | |
| GB963094A (en) | Improvements in or relating to ophthalmometers | |
| GB1152973A (en) | Axially Measuring Ophthalmometer | |
| GB563973A (en) | Optical comparators | |
| GB605483A (en) | Improvements in or relating to range finders | |
| SU115930A1 (en) | Lens Centering Device | |
| GB605485A (en) | Improvements in or relating to range finders | |
| GB605482A (en) | Improvements in or relating to range finders | |
| US2401686A (en) | Range finder | |
| SU444054A1 (en) | Device for the projection of the target mark into the observation system of the measuring device | |
| SU49372A1 (en) | Device for reading the limo of geodesic and other goniometer tools | |
| GB485997A (en) | Improvements in binocular viewing devices for stereophotogrammetric measuring instruments | |
| GB1100701A (en) | Improvements in or relating to combined viewing and sighting instruments | |
| GB1286421A (en) | Optical device for testing alignment and direction | |
| GB416962A (en) | Improvements in and relating to photo-metric apparatus | |
| GB605481A (en) | Improvements in or relating to range finders | |
| GB544938A (en) | Improvements in or relating to optical scale-reading apparatus | |
| GB603474A (en) | Improvements in or relating to range finders |