GB453758A - Improvements in supplementary devices for binocular rangefinders - Google Patents
Improvements in supplementary devices for binocular rangefindersInfo
- Publication number
- GB453758A GB453758A GB15313/36A GB1531336A GB453758A GB 453758 A GB453758 A GB 453758A GB 15313/36 A GB15313/36 A GB 15313/36A GB 1531336 A GB1531336 A GB 1531336A GB 453758 A GB453758 A GB 453758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rangefinder
- images
- height
- eyepieces
- prisms
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
-
- 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)
- Length Measuring Devices By Optical Means (AREA)
- Telescopes (AREA)
Abstract
453,758. Rangefinders. ZEISS, C., Carl-Zeiss-Strasse, Jena, Germany. June 2, 1936, No. 15313. Convention date, June 7, 1935. [Class 97 (i)] In a binocular rangefinder, in order to detect differences of height of the two images and thus to facilitate correction of these differences by means provided in the rangefinder, there is provided a supplementary device enabling both images to be viewed through a single eyepiece, the said device having at least one reflecting system for deflecting a pencil of imaging rays, an optical system combining the pencils of imaging rays of the two eyepieces, and an adjustable optical system for varying the height direction of one of the pencils. Figs. 1 and 2 show one form of the invention as applied to a stereoscopic rangefinder having pentagonal prisms 3 with roof-edged reflecting surfaces, objectives 4, reflecting-prisms 6 bearing measuring-marks 7, eyepieces 8, and a measuring device comprising a pair of prisms 10 which can be rotated in opposite directions by a head 9 bearing a scale 11. The instrument also contains means, consisting of prisms 14 rotatable in opposite directions by a head 13, for neutralizing differences of height of the two images relatively to their respective marks 7. The device according to the invention consists of a casing 15 which can be attached to the rangefinder and has windows 16 corresponding to the eyepieces 8, a reflecting prism 17 being mounted behind one window and a block 23 with a semi-reflecting surface 24 behind the other, so that all the imaging rays pass through a single viewing-aperture 25. The mount 18 of the prism 17 can be rotated about a pin 19 by a screw 22. To detect and correct errors of height of the images, the screw 22 is adjusted until the two measuring marks 7 have the same height when viewed through the aperture 25. Then if the images as seen through this aperture do not coincide as to height the prisms 14 are rotated until such coincidence is obtained. Other forms of the optical elements within the casing 15 are described; for example in Fig. 3, these elements comprise at one end a pentagonal prism 28 with a roof-edge, and at the other end a block 29 as above described. Between the prism 28 and block 29 is a telescope 32 of unit magnification which can be rotated about a pin 33 to bring the mark images to the same height. The casing 15 may form a permanent part of the rangefinder instead of being separate as above described, in which case it is provided with a pair of eyepieces and the optical elements within it are so mounted that they can be turned into their position of use to direct all the rays into one eyepiece, or out of this position so that both eyepieces are used in the ordinary way. A construction is also described for applying the invention to a binocular rangefinder in which measurements are effected by giving the same virtual distance to two stereoscopic images produced by two rangefinder systems of different bases, such an instrument not having measuring marks.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE453758X | 1912-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB453758A true GB453758A (en) | 1936-09-17 |
Family
ID=6538820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15313/36A Expired GB453758A (en) | 1935-06-07 | 1936-06-02 | Improvements in supplementary devices for binocular rangefinders |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR453758A (en) |
GB (1) | GB453758A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2909693A (en) * | 1954-02-10 | 1959-10-20 | Cibie Pierre | Headlamp, notably vehicle headlamp |
DE102005019829A1 (en) | 2005-04-28 | 2006-11-02 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Reflector lamp with high voltage operation includes filament segments retained in a plane perpendicular with the lamp longitudinal axis by funnel-shaped pinches turned-in from the planar top |
-
1913
- 1913-01-30 FR FR453758D patent/FR453758A/en not_active Expired
-
1936
- 1936-06-02 GB GB15313/36A patent/GB453758A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR453758A (en) | 1913-06-16 |
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