GB468481A - Improvements in or connected with stereoscopic observation instruments such as stereoscopic rangefinders - Google Patents
Improvements in or connected with stereoscopic observation instruments such as stereoscopic rangefindersInfo
- Publication number
- GB468481A GB468481A GB1901136A GB1901136A GB468481A GB 468481 A GB468481 A GB 468481A GB 1901136 A GB1901136 A GB 1901136A GB 1901136 A GB1901136 A GB 1901136A GB 468481 A GB468481 A GB 468481A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vertical
- horizontal
- objective
- powers
- eyepiece
- 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
- G01C3/14—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 binocular observation at a single point, e.g. stereoscopic type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Telescopes (AREA)
- Viewfinders (AREA)
- Lenses (AREA)
Abstract
468,481. Range - finders &c. BARR & STROUD, Ltd., and FRENCH, J. W. July 9, 1936, No. 19011. [Class 97 (i)] A stereoscopic observation instrument, particularly a range-finder, comprises an imageforming optical system having in the plane of triangulation a magnification of the order usual in such instruments, while in the vertical direction the magnification is reduced to as small a magnitude as will enable the object to be properly observed so as to facilitate the fusion of images the vertical adjustment of which may be defective. The vertical magnification may be approximately unity. Figs. 4 and 5 show a system comprising simply an objective A and eyepiece B each having different powers in horizontal and vertical planes. In the horizontal plane, Fig. 4, the image plane of the objective is at D, whereas in the vertical plane, Fig. 5, the image is at D<1>. The horizontal and vertical powers of the eyepiece are such that it presents both images D, D<1> to the eye C, the horizontal and vertical magnifications of the telescope then being AD /DB and AD<1> D<1>B respectively. In Figs. 6 and 7 the objective A and eyepiece B have again different powers in horizontal and vertical planes, and a field lens E between them has power in the vertical plane only. In another form using a field lens, this lens may have such different horizontal and vertical powers as to enable an objective to be used having equal powers in horizontal and vertical planes, i.e. the objective may have spherical surfaces. In Figs. 12 and 13, the objective comprises two widely separated parts A<1>, A<2> each having different horizontal and vertical powers. The focal planes may in this case be made to coincide so that an eyepiece with spherical surfaces can be used. The optical parts, such as the objective, eyepiece, or reflecting prisms of a rangefinder, may be reduced in height so as to be of substantially less size than would be necessary for a corresponding instrument with uniform magnification. Specification 325,956, [Class 97 (i)], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1901136A GB468481A (en) | 1936-07-09 | 1936-07-09 | Improvements in or connected with stereoscopic observation instruments such as stereoscopic rangefinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1901136A GB468481A (en) | 1936-07-09 | 1936-07-09 | Improvements in or connected with stereoscopic observation instruments such as stereoscopic rangefinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB468481A true GB468481A (en) | 1937-07-06 |
Family
ID=10122258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1901136A Expired GB468481A (en) | 1936-07-09 | 1936-07-09 | Improvements in or connected with stereoscopic observation instruments such as stereoscopic rangefinders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB468481A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8284988B2 (en) | 2009-05-13 | 2012-10-09 | Applied Vision Corporation | System and method for dimensioning objects using stereoscopic imaging |
| US8508591B2 (en) | 2010-02-05 | 2013-08-13 | Applied Vision Corporation | System and method for estimating the height of an object using tomosynthesis-like techniques |
| US8781159B2 (en) | 2009-05-13 | 2014-07-15 | Applied Vision Corporation | System and method for dimensioning objects using stereoscopic imaging |
-
1936
- 1936-07-09 GB GB1901136A patent/GB468481A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8284988B2 (en) | 2009-05-13 | 2012-10-09 | Applied Vision Corporation | System and method for dimensioning objects using stereoscopic imaging |
| US8781159B2 (en) | 2009-05-13 | 2014-07-15 | Applied Vision Corporation | System and method for dimensioning objects using stereoscopic imaging |
| US8508591B2 (en) | 2010-02-05 | 2013-08-13 | Applied Vision Corporation | System and method for estimating the height of an object using tomosynthesis-like techniques |
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