GB190720390A - New or Improved Means for Preventing in Monocular Optical Instruments Fatigue of the Eye not used for Observation also applicable for Sighting or Measuring with said Instruments. - Google Patents
New or Improved Means for Preventing in Monocular Optical Instruments Fatigue of the Eye not used for Observation also applicable for Sighting or Measuring with said Instruments.Info
- Publication number
- GB190720390A GB190720390A GB190720390DA GB190720390A GB 190720390 A GB190720390 A GB 190720390A GB 190720390D A GB190720390D A GB 190720390DA GB 190720390 A GB190720390 A GB 190720390A
- Authority
- GB
- United Kingdom
- Prior art keywords
- instruments
- eye
- observation
- fatigue
- sighting
- 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
Landscapes
- Telescopes (AREA)
- Lenses (AREA)
Abstract
20,390. Optische Anstalt C. P. Goerz Akt.-Ges. Sept. 13, 1906, [date applied for under Patents Act, 1901]. Optical instruments; telescopes; microscopes.- To prevent fatigue of the idle eye when monocular instruments are being used, a collimator b with a mark d is fitted and adjusted to secure the same focal adjustment for each eye. Scales may be mounted in the collimator to project into the principal image for micrometrical purposes. A pair of these collimators may be employed, one on each side of the usual eyepiece, to allow of either the right or the left eye being used for the observation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE190720390X | 1906-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190720390A true GB190720390A (en) | 1908-03-26 |
Family
ID=32404904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190720390D Expired GB190720390A (en) | 1906-09-13 | 1907-09-12 | New or Improved Means for Preventing in Monocular Optical Instruments Fatigue of the Eye not used for Observation also applicable for Sighting or Measuring with said Instruments. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190720390A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3058392A (en) * | 1959-11-23 | 1962-10-16 | Richard C Primeau | Bisight spectacles |
-
1907
- 1907-09-12 GB GB190720390D patent/GB190720390A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3058392A (en) * | 1959-11-23 | 1962-10-16 | Richard C Primeau | Bisight spectacles |
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