GB887231A - Condenser for increasing the resolving power of microscopes operating with transmitted light - Google Patents
Condenser for increasing the resolving power of microscopes operating with transmitted lightInfo
- Publication number
- GB887231A GB887231A GB31863/58A GB3186358A GB887231A GB 887231 A GB887231 A GB 887231A GB 31863/58 A GB31863/58 A GB 31863/58A GB 3186358 A GB3186358 A GB 3186358A GB 887231 A GB887231 A GB 887231A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- ground illumination
- mount
- front lens
- transparent
- 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
- G02B21/06—Means for illuminating specimens
- G02B21/08—Condensers
- G02B21/12—Condensers affording bright-field illumination
- G02B21/125—Condensers affording bright-field illumination affording both dark- and bright-field illumination
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microscoopes, Condenser (AREA)
Abstract
887,231. Microscope condensers. BARABAS, J., ZSELYONKA, L., KISS, F., and LIBIK, A. Oct. 6, 1958 [May 22, 1958], No. 31863/58. Class 97(1). A condenser for increasing the resolving power of microscopes comprises an exchangeable front lens having a plane exit face and a hemispherical surface and disposed at the opposite end of the condenser from a filter which has semi-transparent metallic layers on both sides of a transparent portion, the condenser being movable transversely to its axis. As shown in Fig. 1, the condenser includes lenses 28, 29, 30 of which the front lens 30 is exchangeable, being carried by a mount which fits over the main condenser mount 35. This mount 35 is slidable under control of a screw 43 in an annular holder 40 and also supports a filter 27, Figs. 1 and 5, which has transparent portions 54, 55a, 55b and 56 and semi-transparent portions 57a, 57b. Such a condenser gives central bright ground illumination which may be converted into circular bright ground illumination by using a front lens 30 with a masking cap 52, Fig. 3, fitted on to a central opaque part 50 of cement. Dark ground illumination can be obtained by provision of a mask 52 having a transmitting zone 51 of different width. By moving the condenser at right angles to its axis, combined dark and bright ground illumination is obtained. Specification 887,230 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU887231X | 1958-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB887231A true GB887231A (en) | 1962-01-17 |
Family
ID=10980827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31863/58A Expired GB887231A (en) | 1958-05-22 | 1958-10-06 | Condenser for increasing the resolving power of microscopes operating with transmitted light |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB887231A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994007170A1 (en) * | 1992-09-19 | 1994-03-31 | Leica Mikroskopie Und Systeme Gmbh | Bright-field transparency illumination device for microscopes |
-
1958
- 1958-10-06 GB GB31863/58A patent/GB887231A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994007170A1 (en) * | 1992-09-19 | 1994-03-31 | Leica Mikroskopie Und Systeme Gmbh | Bright-field transparency illumination device for microscopes |
| US5566019A (en) * | 1992-09-19 | 1996-10-15 | Leica Mikroskopie Und Systeme Gmbh | Bright-field transmitted-light lighting device for microscopes |
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