DE174720C - - Google Patents
Info
- Publication number
- DE174720C DE174720C DENDAT174720D DE174720DA DE174720C DE 174720 C DE174720 C DE 174720C DE NDAT174720 D DENDAT174720 D DE NDAT174720D DE 174720D A DE174720D A DE 174720DA DE 174720 C DE174720 C DE 174720C
- Authority
- DE
- Germany
- Prior art keywords
- lenses
- eyepieces
- opera glasses
- fork
- opera
- 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.)
- Active
Links
- 239000011521 glass Substances 0.000 claims description 14
- 230000004304 visual acuity Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
- G02B23/18—Housings; Caps; Mountings; Supports, e.g. with counterweight for binocular arrangements
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE174720C true DE174720C (enExample) |
Family
ID=439436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT174720D Active DE174720C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE174720C (enExample) |
-
0
- DE DENDAT174720D patent/DE174720C/de active Active
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