FR987673A - Loupe - Google Patents
LoupeInfo
- Publication number
- FR987673A FR987673A FR987673DA FR987673A FR 987673 A FR987673 A FR 987673A FR 987673D A FR987673D A FR 987673DA FR 987673 A FR987673 A FR 987673A
- Authority
- FR
- France
- Prior art keywords
- magnifying glass
- magnifying
- glass
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/002—Magnifying glasses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1476548A GB643938A (en) | 1948-06-01 | 1948-06-01 | Lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR987673A true FR987673A (fr) | 1951-08-17 |
Family
ID=10047096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR987673D Expired FR987673A (fr) | 1948-06-01 | 1949-05-31 | Loupe |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE845414C (fr) |
| FR (1) | FR987673A (fr) |
| GB (1) | GB643938A (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2133643C2 (de) * | 1970-07-08 | 1982-04-22 | Polaroid Corp., 02139 Cambridge, Mass. | Photographisches Objektiv in Form eines Tripletts |
| US4249205A (en) * | 1978-12-11 | 1981-02-03 | Marvin P. Hodges | Aspheric projection lens system utilizing concave image |
| DE102014017534A1 (de) * | 2014-11-24 | 2016-05-25 | Carl Zeiss Ag | Anzeigevorrichtung, die auf den Kopf eines Benutzers aufsetzbar ist |
-
1948
- 1948-06-01 GB GB1476548A patent/GB643938A/en not_active Expired
-
1949
- 1949-05-31 FR FR987673D patent/FR987673A/fr not_active Expired
- 1949-06-01 DE DE1949P0003089 patent/DE845414C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE845414C (de) | 1952-07-31 |
| GB643938A (en) | 1950-09-27 |
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