GB695833A - Improvements in and relating to optical projecting apparatus for examination of time-piece jewels - Google Patents
Improvements in and relating to optical projecting apparatus for examination of time-piece jewelsInfo
- Publication number
- GB695833A GB695833A GB16070/51A GB1607051A GB695833A GB 695833 A GB695833 A GB 695833A GB 16070/51 A GB16070/51 A GB 16070/51A GB 1607051 A GB1607051 A GB 1607051A GB 695833 A GB695833 A GB 695833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jewel
- light beam
- support
- jewels
- optical
- 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
- G02B21/00—Microscopes
- G02B21/0004—Microscopes specially adapted for specific applications
- G02B21/0016—Technical microscopes, e.g. for inspection or measuring in industrial production processes
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
695,833. Optical projection apparatus. SOC. GENEVOISE D'INSTRUMENTS DE. PHYSIQUE. July 6, 1951 [July 7, 1950], No.. 16070/51. Class 97 (i). A projection device for examining time-piece, jewels has a horizontal carrier on which the. jewel is supported by one of its end faces in a. bath of liquid of approximately the same refractive index through which the optical axis, is passed horizontally, reflecting surfaces being provided outside the bath at both entry and exit of the light beam, the optical axis being vertical beyond these surfaces. One form of optical system is shown in Fig. 1. A beam of light from a lamp 11 is projected by condensers: 12 and 14 and a reflector 13 into rhomboidalprism 19 from which it enters a prism 20 which directs it through the walls 18a, 18b of a cell containing the specimen P on a support 17. A prism 21 directs the emergent light beam through an objective 5a which is one of a number on a turret with axis 6. The imageforming light beam is directed rearwardly by a mirror and then forwardly again on to the rear of a projection screen which has clips for supporting reference drawings. The prisms 20, 21 are supported on members 22 carried on balls and adjustable by knobs 24. Scales may be provided. By these adjustments the light beam through the jewel may be adjusted to be inclined to the horizontal to secure better illumination. The jewel support 17 is shown on a larger scale in Fig. 7. The jewel rests on the upper surface 33, the support having at 32 a bevel which is tapered so that the edge 30 is inclined to the wall 18b.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH695833X | 1950-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB695833A true GB695833A (en) | 1953-08-19 |
Family
ID=4529630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16070/51A Expired GB695833A (en) | 1950-07-07 | 1951-07-06 | Improvements in and relating to optical projecting apparatus for examination of time-piece jewels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB695833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4126393A (en) * | 1976-03-02 | 1978-11-21 | Showa Denko K. K | High-sensitivity differential refractometer |
-
1951
- 1951-07-06 GB GB16070/51A patent/GB695833A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4126393A (en) * | 1976-03-02 | 1978-11-21 | Showa Denko K. K | High-sensitivity differential refractometer |
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