CN215181138U - Self-focusing lens for OCT - Google Patents
Self-focusing lens for OCT Download PDFInfo
- Publication number
- CN215181138U CN215181138U CN202120918591.6U CN202120918591U CN215181138U CN 215181138 U CN215181138 U CN 215181138U CN 202120918591 U CN202120918591 U CN 202120918591U CN 215181138 U CN215181138 U CN 215181138U
- Authority
- CN
- China
- Prior art keywords
- self
- focusing lens
- light
- oct
- lens body
- 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
- 238000002834 transmittance Methods 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000005229 chemical vapour deposition Methods 0.000 claims description 6
- 238000007738 vacuum evaporation Methods 0.000 claims description 6
- 238000002310 reflectometry Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 26
- 239000013307 optical fiber Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Images
Landscapes
- Surface Treatment Of Optical Elements (AREA)
Abstract
The utility model discloses a self-focusing lens for OCT, the self-focusing lens includes a cylindrical self-focusing lens body, one end of the self-focusing lens body is provided with an inclined plane, and a light reflection film is arranged on the inclined plane; and the side surface of one end of the self-focusing lens body opposite to the inclined surface forms a light inlet/outlet surface. And an antireflection film is arranged on the light inlet/outlet surface of the self-focusing lens body. The utility model discloses a self-focusing lens is used for collimated light beam, and can realize the edgewise light-emitting or advance light. In addition, the reflection light on the surface can be reduced and the transmittance of the light on the surface can be increased by designing the antireflection film.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to self-focusing lens for OCT.
Background
Optical interference Tomography (OCT) is an Optical imaging technique based on the principle of interference of weak coherent light, which obtains a two-dimensional or three-dimensional structure of biological tissue by detecting back-reflected or scattered signals of different tissues to incident weak coherent light.
The OCT optical scanning probe obtains images through internal optical fiber guide wire rotation scanning, and the probe axial motion can scan layer by layer while the optical fiber guide wire rotates, so that richer image information can be obtained. In OCT optical scanning probes, collimators are commonly used. The optical fiber collimator in the prior art is generally composed of a plurality of components such as a pigtail, a Lens, a prism, etc., and a self-focusing Lens (Grin Lens) in the prior art is also called a gradient index Lens, which refers to a cylindrical optical Lens whose refractive index distribution is gradually changed along a radial direction. The self-focusing lens is a cylindrical lens, and can refract light transmitted along the axial direction and gradually reduce the distribution of the refractive index along the radial direction, so that emergent light rays are smoothly and continuously converged to one point; but light exit or entry from the side is not possible.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the present invention provides a self-focusing lens for OCT, which is used for collimating light beams and can realize light outgoing or light incoming from the side.
The purpose of the utility model is realized by adopting the following technical scheme:
a self-focusing lens for OCT, the said self-focusing lens includes the cylindrical self-focusing lens body, characterized by that, one end of the said self-focusing lens body has inclined planes, there are light reflecting films on the said inclined planes; and the side surface of one end of the self-focusing lens body opposite to the inclined surface forms a light inlet/outlet surface.
In an optional implementation manner, an antireflection film is disposed on the light entering/exiting surface of the self-focusing lens body.
In an alternative embodiment, the transmission of the antireflection film to incident light is greater than 99%.
In an optional embodiment, the antireflection film is disposed on the light incident/emergent surface by vacuum evaporation, chemical vapor deposition or sol-gel coating.
In an alternative embodiment, the antireflection film has a thickness of 4 to 50 μm.
In an alternative embodiment, the inclined surface forms an angle α with the axis of the self-focusing lens body, where α is 30 ° to 60 °.
In an alternative embodiment, the angle α is 40 °.
In an alternative embodiment, the light reflecting film has a reflectance of incident light of more than 99%.
In an alternative embodiment, the light reflecting film has a thickness of 4 to 50 μm.
In an alternative embodiment, the light reflective film is disposed on the inclined surface by vacuum evaporation, chemical vapor deposition or sol-gel coating.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. one end of the self-focusing Lens (G-Lens) of the utility model is provided with an inclined plane, and a light reflection film is arranged on the inclined plane; the side surface of one end of the self-focusing lens body opposite to the inclined surface forms a light inlet/outlet surface. After the light beam entering the self-focusing lens body from the end face reaches the inclined plane, the light beam is reflected by the light reflecting film and then is emitted from the light inlet/outlet surface on the side face of the self-focusing lens body; or the light reflected from the light inlet/outlet surface can be reflected back to the self-focusing lens body through the light reflecting film and emitted from the other end surface. Therefore, the utility model discloses can realize the edgewise light-emitting or advance light.
2. The utility model discloses a be provided with the antireflection coating on advancing/play plain noodles of self-focusing lens body, through designing the antireflection coating, can reduce the reverberation on surface, increase the transmittance of light on the surface.
3. The inclined plane of the present invention forms an included angle α with the axis of the self-focusing lens body, where α is 30 ° to 60 °. By changing the angle, the sample light scattered back in a specific direction can be collected.
Drawings
Fig. 1 is a schematic structural diagram of a self-focusing lens according to a first embodiment;
FIG. 2 is a perspective view of a self-focusing lens body according to a first embodiment;
FIG. 3 is a perspective view of another angle of the self-focusing lens body according to the first embodiment;
FIG. 4 is a cross-sectional view of a self-focusing lens body according to the first embodiment;
FIG. 5 is a schematic view of a light beam simulation according to the first embodiment;
fig. 6 is a schematic structural diagram of a self-focusing lens according to a second embodiment.
In the figure: 10. a self-focusing lens body; 11. an inclined surface; 12. a light inlet/outlet surface; 20. a light reflecting film; 30. and (4) an anti-reflection film.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.
In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The first embodiment is as follows:
referring to fig. 1 to 4, a self-focusing lens for OCT, the self-focusing lens including a cylindrical self-focusing lens body 10, one end of the self-focusing lens body 10 being provided with an inclined surface 11, the inclined surface 11 being provided with a light reflecting film 20; the side surface of one end of the self-focusing lens body 10 opposite to the inclined surface 11 forms an entrance/exit surface 12.
In this embodiment, one end of the self-focusing lens may be made into the inclined surface 11 by grinding or cutting, and the material adopted by the self-focusing lens can refract the light transmitted along the axial direction and gradually decrease the distribution of the refractive index along the radial direction, so as to realize that the emergent light is smoothly and continuously converged to one point, which may be specifically selected according to actual needs.
In a preferred embodiment of the present invention, referring to fig. 4, the inclined surface 11 forms an angle α with the axis of the self-focusing lens body 10, where α is 30 ° to 60 °. By changing the angle, the sample light scattered back in a specific direction can be collected, and considering the actual requirement, more preferably, α is 40 °.
In the preferred embodiment of the present invention, the reflectivity of the light reflective film 20 to the incident light is greater than 99%.
In the preferred embodiment of the present invention, the light reflective film 20 has a thickness of 4-50 μm.
In the preferred embodiment of the present invention, the inclined surface 11 is plated with a layer of the light reflection film 20. Specifically, the coating method may employ vacuum evaporation, chemical vapor deposition, sol-gel coating, or the like. Compared with the prior art, the sol-gel coating equipment is simple, can be operated at normal temperature and normal pressure, has high uniformity of the coating layer and controllable microstructure, is suitable for substrates with different shapes and sizes, can obtain an optical film with high laser damage threshold by controlling a formula and a preparation process, and becomes one of the most competitive preparation methods of high-power laser films.
In the embodiment, in the practical application process, the right end face of the optical fiber and the left end face of the G-Lens are connected together in a fusion welding mode, the optical fiber and the left end face of the G-Lens can bear a certain degree of tensile force after fusion welding, and meanwhile light transmitted in the optical fiber can enter the G-Lens from the right end face or can enter the optical fiber. The right end of the G-Lens is ground or cut to form a certain angle, and the surface of the G-Lens is plated with a light reflection film 20, so that light beams entering the G-Lens from the end face can emit light from the side face of the light emitting direction shown in the figure 5 after reaching the right end face; or the light reflected from the light exit direction can be reflected back into the G-Lens through the light reflection film 20 and transmitted to the optical fiber from the left end face.
Example two:
referring to fig. 6, on the basis of the first embodiment, the present embodiment is characterized in that: the light inlet/outlet surface 12 of the self-focusing lens body 10 is coated with an antireflection film 30, and the transmittance of the antireflection film 30 to incident light is greater than 99%. By designing the antireflection film 30, the reflected light on the surface can be reduced, and the transmittance of light on the surface can be increased by reducing the reflected light.
In the preferred embodiment of the present invention, an antireflection film 30 is coated on the light entering/exiting surface 12 of the self-focusing lens body 10. Specifically, the coating method may employ vacuum evaporation, chemical vapor deposition, sol-gel coating, or the like. Compared with the prior art, the sol-gel coating equipment is simple, can be operated at normal temperature and normal pressure, has high uniformity of the coating layer and controllable microstructure, is suitable for substrates with different shapes and sizes, can obtain an optical film with high laser damage threshold by controlling a formula and a preparation process, and becomes one of the most competitive preparation methods of high-power laser films.
In a preferred embodiment of the present invention, the thickness of the antireflection film 30 is 4 to 50 μm.
While only certain features and embodiments of the application have been illustrated and described, many modifications and changes may occur to those skilled in the art (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the scope and spirit of the invention in the claims.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A self-focusing lens for OCT, the said self-focusing lens includes the cylindrical self-focusing lens body, characterized by that, one end of the said self-focusing lens body has inclined planes, there are light reflecting films on the said inclined planes; and the side surface of one end of the self-focusing lens body opposite to the inclined surface forms a light inlet/outlet surface.
2. The self-focusing lens for OCT according to claim 1, wherein an antireflection film is disposed on the light entrance/exit surface of the self-focusing lens body.
3. The self-focusing lens for OCT according to claim 2, characterized in that said antireflection film has a transmittance for incident light of more than 99%.
4. The self-focusing lens for OCT according to claim 2, wherein said antireflection film is disposed on said light entrance/exit surface by vacuum evaporation, chemical vapor deposition, or sol-gel coating.
5. The self-focusing lens for OCT according to claim 2, characterized in that the thickness of the antireflection film is 4 to 50 μm.
6. The self-focusing lens for OCT according to claim 1, characterized in that the inclined surface forms an angle α with the axis of the self-focusing lens body, α being 30 ° -60 °.
7. The self-focusing lens for OCT according to claim 6, characterized in that said angle α is 40 °.
8. The self-focusing lens for OCT according to claim 1, characterized in that said light reflecting film has a reflectivity of more than 99% for the incident light.
9. The self-focusing lens for OCT according to claim 1, characterized in that said light reflecting film has a thickness of 4-50 μ ι η.
10. The self-focusing lens for OCT according to claim 1, wherein said light reflecting film is disposed on said inclined surface by means of vacuum evaporation, chemical vapor deposition, or sol-gel coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120918591.6U CN215181138U (en) | 2021-04-29 | 2021-04-29 | Self-focusing lens for OCT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120918591.6U CN215181138U (en) | 2021-04-29 | 2021-04-29 | Self-focusing lens for OCT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215181138U true CN215181138U (en) | 2021-12-14 |
Family
ID=79365470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120918591.6U Active CN215181138U (en) | 2021-04-29 | 2021-04-29 | Self-focusing lens for OCT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215181138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115220135A (en) * | 2022-08-05 | 2022-10-21 | 上海中科澳谱光电器件有限公司 | Spherical micro self-focusing lens and production method thereof |
| TWI832624B (en) * | 2022-12-21 | 2024-02-11 | 財團法人工業技術研究院 | Optical coherence tomography common-path probe |
-
2021
- 2021-04-29 CN CN202120918591.6U patent/CN215181138U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115220135A (en) * | 2022-08-05 | 2022-10-21 | 上海中科澳谱光电器件有限公司 | Spherical micro self-focusing lens and production method thereof |
| TWI832624B (en) * | 2022-12-21 | 2024-02-11 | 財團法人工業技術研究院 | Optical coherence tomography common-path probe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215181138U (en) | Self-focusing lens for OCT | |
| US9579027B2 (en) | Acoustic wave detection probe and photoacoustic measurement apparatus provided with the same | |
| US6433910B2 (en) | Confocal optical system | |
| US20090262361A1 (en) | Optical probe | |
| CN108445467A (en) | A kind of scanning laser radar system | |
| CN204306791U (en) | A kind of endoscopic imaging probe | |
| CN104257342A (en) | Endoscopic imaging probe and imaging method with same | |
| US6483626B2 (en) | Direct-view-type confocal point optical system | |
| US8933417B2 (en) | Combined lens and reflector, and an optical apparatus using the same | |
| JP2018507400A (en) | Reflective optical coherence tomography probe | |
| US11460640B2 (en) | Fiber optic probe having components and features that improve performance | |
| US20220019028A1 (en) | Fiber optic probe having components and features that improve performance | |
| CN206960659U (en) | A kind of sounding optical system | |
| JP2594470B2 (en) | Achromatic scanning device | |
| CN209285474U (en) | Photoacoustic imaging probe and photoacoustic imaging system | |
| JP2015219424A (en) | Optical connector | |
| CN210582452U (en) | OCT system with fixed reference arm | |
| CN113237850A (en) | Optical fiber collimator for OCT (optical coherence tomography), manufacturing method and OCT equipment | |
| CN210465678U (en) | Laser emission device and laser radar system | |
| CN111025483B (en) | Preparation method of fiber lens and fiber lens | |
| US20220276150A1 (en) | Optoacoustic Probe | |
| US9448158B2 (en) | Lightguides to simplify total emission detection for multiphoton microscopy | |
| JP6180843B2 (en) | probe | |
| CN106501948B (en) | Double-channel optical rotary coupler | |
| CN107024738B (en) | Device and method for fiber bundle coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240506 Address after: 518000, No. 33, Guimiao New Village, Yuegui Community, Yuehai Street, Nanshan District, Shenzhen, Guangdong Province 104 Patentee after: Shenzhen Aositian Medical Technology Co.,Ltd. Country or region after: China Address before: 510700 No. B205, zone B, Guangzhou International Business Incubator, No. 3, Juquan Road, Science City, Guangzhou high tech Industrial Development Zone, Guangzhou, Guangdong Province Patentee before: GUANGZHOU WINSTAR MEDICAL TECHNOLOGY Co.,Ltd. Country or region before: China |