CN2321017Y - Cone fibre-optical condenser - Google Patents
Cone fibre-optical condenser Download PDFInfo
- Publication number
- CN2321017Y CN2321017Y CN 97231251 CN97231251U CN2321017Y CN 2321017 Y CN2321017 Y CN 2321017Y CN 97231251 CN97231251 CN 97231251 CN 97231251 U CN97231251 U CN 97231251U CN 2321017 Y CN2321017 Y CN 2321017Y
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- CN
- China
- Prior art keywords
- optical fiber
- utility
- lens
- model
- light
- 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 - Fee Related
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- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to an optical detector which can solve the problem of light spot reduction. The cone fibre-optical condenser of the utility model comprises a light source, a light collecting lens, optical fibre and a condensing assembly, wherein, the light collecting lens can be arranged between the light source and one end of the optical fibre, and the other end of the optical fiber is provided with the condensing assembly. The utility model is characterized in that the cross-section area of one end of the end is smaller than the cross-section area of the other end, and the condense assembly can be arranged on one end whose cross-section area is smaller. The utility model can be used for a capillary electrophoresis apparatus.
Description
The utility model relates to fluorescence detector, especially relates to the fluorescence detector on the capillary electrophoresis apparatus.Carrying out optical detection on the kapillary is to use maximum detection methods on the present capillary electrophoresis apparatus.Its basic demand is: with the light of light source gather to become the hot spot suitable with capillary inner diameter (＜0.2mm), and be radiated at center capillaceous exactly.Use two kinds of beam condensing units at present on the instrument:
1. ordinary lens group.Use this beam condensing unit, hot spot is difficult to reach below the 0.3mm, can only block unnecessary facula area by aperture, and its efficiency of light energy utilization is lower.
2. concave-sphere focuses on.This is to place a little concave-sphere after common collector lens, thereby hot spot is narrowed down to about 0.1mm.Though this technology makes hot spot and capillary inner diameter coupling, improved the utilization factor of luminous energy, the optical quality of its focusing is relatively poor.
The inventor notices that taper optical fiber two end cross-sectional areas do not wait, and when light is delivered to smaller diameter end from taper optical fiber larger diameter end, just is equal to a hot spot is dwindled, and has low-loss advantage.But the still unmanned taper optical fiber that adopts in beam condensing unit up to the present.
The purpose of this utility model is that existing beam condensing unit is improved, provides a kind of and hot spot can be narrowed down to required size, and the optical quality that focuses on taper optical fiber light condensing device preferably.
The purpose of this utility model is achieved in that the taper optical fiber light condensing device, and it comprises: light source, collecting lens, optical fiber and concentrating component; Establish collecting lens between light source and optical fiber one end, optical fiber in addition end is established concentrating component, it is characterized in that: the sectional area of optical fiber one end is less than the other end, and in the little end of sectional area concentrating component is set.
Above-mentioned design, the light of light source are after collecting lens is assembled, from the big end incident of taper optical fiber sectional area, from little one the bringing out and penetrate of sectional area, owing to be easy to an end drawing-down with taper optical fiber to 0.2mm or littler, so just can obtain the hot spot of same size.Then through concentrating component with optical quality preferably ratio (about 1: 1) make this hot spot imaging, thereby reached improved purpose.
The utility model is described in further detail below by accompanying drawing and embodiment:
Fig. 1 is a synoptic diagram of the present utility model;
As shown in Figure 1, the utility model comprises: light source 1, collecting lens 2, taper optical fiber 3, fiber optic protection head 4, collector lens 5, lens mount 6 and kapillary 7; Collector lens 5 is set in the lens mount 6 and constitutes concentrating component; The light of light source is after collecting lens is assembled, from end face 9 incidents of taper optical fiber 3, through Optical Fiber Transmission, from end face 8 outgoing; The sectional area of end face 8 is less than the sectional area of end face 9; End face 8 outsides are provided with fiber optic protection head 4; Fiber optic protection head 4 inserts within the lens mount 6, and the degree of depth of insertion makes from the light of end face 8 outgoing and is focused on the kapillary 7 after collector lens 5.The simplest collector lens 5 is concave-spheres.Collector lens 5 can replace with a plurality of lens, as two pieces of opposed plano-convex lenss, or 3-4 piece of achromat; The concentrating component that lens mount and a plurality of lens are formed can further improve the optical quality of focusing.Use catoptron can realize the optically focused purpose equally.Can also insert other optics in the concentrating component, as optical filter.Taper optical fiber can be single optical fiber, also can be fibre bundle, and its end surface shape can change as required.
Claims (3)
1, taper optical fiber light condensing device, it comprises: light source, collecting lens, optical fiber and concentrating component; Establish collecting lens between light source and optical fiber one end, optical fiber in addition end is established concentrating component, it is characterized in that: the sectional area of optical fiber one end is less than the other end, and in the little end of sectional area concentrating component is set.
2, taper optical fiber light condensing device as claimed in claim 1 is characterized in that: concentrating component, it comprises: a lens mount and 1-4 lens.
3, taper optical fiber light condensing device as claimed in claim 1 is characterized in that: concentrating component, it comprises: a mirror unit and 1-4 catoptron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97231251 CN2321017Y (en) | 1997-12-19 | 1997-12-19 | Cone fibre-optical condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97231251 CN2321017Y (en) | 1997-12-19 | 1997-12-19 | Cone fibre-optical condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2321017Y true CN2321017Y (en) | 1999-05-26 |
Family
ID=33943513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97231251 Expired - Fee Related CN2321017Y (en) | 1997-12-19 | 1997-12-19 | Cone fibre-optical condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2321017Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950700A (en) * | 2017-05-17 | 2017-07-14 | 上海鲲游光电科技有限公司 | A kind of augmented reality eyeglass device of micro- projector's separation |
| CN115684446A (en) * | 2022-09-28 | 2023-02-03 | 上海交通大学 | Isoelectric focusing capillary structure, capillary box and full-column imaging device |
-
1997
- 1997-12-19 CN CN 97231251 patent/CN2321017Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950700A (en) * | 2017-05-17 | 2017-07-14 | 上海鲲游光电科技有限公司 | A kind of augmented reality eyeglass device of micro- projector's separation |
| CN115684446A (en) * | 2022-09-28 | 2023-02-03 | 上海交通大学 | Isoelectric focusing capillary structure, capillary box and full-column imaging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |