CN219641955U - Lens applied to endoscope - Google Patents
Lens applied to endoscope Download PDFInfo
- Publication number
- CN219641955U CN219641955U CN202223495071.2U CN202223495071U CN219641955U CN 219641955 U CN219641955 U CN 219641955U CN 202223495071 U CN202223495071 U CN 202223495071U CN 219641955 U CN219641955 U CN 219641955U
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- Prior art keywords
- lens
- film layer
- mgf
- endoscope
- thickness
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- 239000010410 layer Substances 0.000 claims abstract description 57
- 239000011247 coating layer Substances 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 229910017569 La2(CO3)3 Inorganic materials 0.000 claims description 3
- NZPIUJUFIFZSPW-UHFFFAOYSA-H lanthanum carbonate Chemical compound [La+3].[La+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O NZPIUJUFIFZSPW-UHFFFAOYSA-H 0.000 claims description 3
- 229960001633 lanthanum carbonate Drugs 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 abstract description 8
- 229910001635 magnesium fluoride Inorganic materials 0.000 abstract description 8
- 238000002834 transmittance Methods 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 7
- 238000000576 coating method Methods 0.000 abstract description 7
- 238000003384 imaging method Methods 0.000 abstract description 7
- 238000002310 reflectometry Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 239000007888 film coating Substances 0.000 description 2
- 238000009501 film coating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Endoscopes (AREA)
Abstract
The utility model belongs to the field of lenses, and particularly relates to a lens applied to an endoscope. The surface of the lens substrate is sequentially provided with a first MgF from inside to outside 2 Coating layer, first refraction film layer, second MgF 2 Coating layer, second refraction film layer and third MgF 2 Coating film layer, third refraction film layer and fourth MgF 2 And a coating layer. Through reasonable staggered collocation of the magnesium fluoride film layer and the refraction film layer, the magnesium fluoride coating with low refractive index is repeatedly plated, so that the whole lens has stronger anti-reflection performance and is suitable for smaller radius and curvatureThe endoscope lens with smaller radius is used, so that the light transmittance is ensured, and the imaging quality of the lens is improved.
Description
[ field of technology ]
The utility model belongs to the field of lenses, and particularly relates to a lens applied to an endoscope.
[ background Art ]
Endoscopes are detection instruments that integrate traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software, and the like. One with an image sensor, optical lens, light source illumination, mechanical means, etc. The lens is characterized in that the diameter and the curvature radius are very small, so that the endoscope lens is difficult to process and detect generally, the imaging quality of the endoscope is an important parameter which directly reflects the performance of the endoscope, the conventional endoscope lens generally adopts a film system structure formed by TI series materials, the cost of the film system material is high, the reject ratio is high, and the imaging quality is unstable.
[ utility model ]
In order to solve the problem of the imaging quality of an endoscope lens in the prior art, the utility model provides a lens applied to an endoscope.
The utility model is realized by the following technical scheme:
a lens applied to an endoscope comprises a lens substrate, wherein the surface of the lens substrate is sequentially provided with a first MgF from inside to outside 2 Coating layer, first refraction film layer, second MgF 2 Coating layer, second refraction film layer and third MgF 2 Coating film layer, third refraction film layer and fourth MgF 2 And a coating layer.
A lens applied to an endoscope as described above, the first MgF 2 The thickness of the coating layer is 45 nm-46.7 nm.
A lens applied to an endoscope as described above, the second MgF 2 The thickness of the coating layer is 48 nm-51.6 nm.
A lens applied to an endoscope as described above, the third MgF 2 The thickness of the coating layer is 11 nm-13.1 nm.
A lens applied to an endoscope as described above, the fourth MgF 2 The thickness of the coating layer is 98 nm-100.9 nm.
The first refraction film layer, the second refraction film layer and the third refraction film layer are all lanthanum carbonate film layers.
The lens sheet for endoscope is characterized in that the thickness of the first refraction film layer is 20 nm-21.45 nm.
The lens sheet applied to the endoscope has the thickness of 55 nm-58.7 nm.
The lens sheet for endoscope is characterized in that the thickness of the third refraction film layer is 58 nm-60.5 nm.
A lens for use in an endoscope as described above, the lens substrate comprising a lensThe lens comprises a lens body, wherein the lens body comprises an outer side end and an inner side end, the outer side end is a plane, a concave surface is arranged on the inner side end, and the first MgF is arranged on the lens body 2 Coating layer, first refraction film layer, second MgF 2 Coating layer, second refraction film layer and third MgF 2 Coating film layer, third refraction film layer and fourth MgF 2 The coating layers are all arranged on the concave surface at the inner side end.
Compared with the prior art, the utility model has the following advantages:
the utility model provides a lens applied to an endoscope, which is formed by repeatedly plating a magnesium fluoride coating with low refractive index through the staggered collocation of a reasonable magnesium fluoride film layer and a refractive film layer, so that the whole lens has stronger anti-reflection performance, is suitable for the endoscope lens with smaller radius and smaller curvature radius, ensures the light transmittance and improves the imaging quality of the lens.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a lens assembly for use with an endoscope in accordance with the present utility model;
FIG. 2 is a schematic view of the portion A of FIG. 1;
FIG. 3 is a graph showing the reflectance test of a lens assembly for an endoscope according to the present utility model.
[ detailed description ] of the utility model
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model is realized by the following technical scheme:
as shown in fig. 1 and 2, a lens applied to an endoscope comprises a lens substrate 1, wherein a first MgF is sequentially arranged on the surface of the lens substrate 1 from inside to outside 2 Film coating layer 20, first refraction film layer 21, second MgF 2 Coating layer 22, second refraction film layer 23 and third MgF 2 Coating layer 24, third refraction film layer 25 and fourth MgF 2 A coating layer 26. The utility model provides a lens applied to an endoscope, which is formed by repeatedly plating a magnesium fluoride coating with low refractive index through the staggered collocation of a reasonable magnesium fluoride film layer and a refractive film layer, so that the whole lens has stronger anti-reflection performance, is suitable for the endoscope lens with smaller radius and smaller curvature radius, ensures the light transmittance and improves the imaging quality of the lens.
Further, the size and the range of the light transmittance of the lens applied to the endoscope are influenced by the thickness of each layer, so that the size and the range of the light transmittance can be adjusted by controlling the thickness of the film. The first MgF 2 The thickness of the coating layer 20 is 45nm to 46.7nm. Preferably, the first MgF 2 The thickness of the coating layer 20 was 45.76nm. The second MgF 2 The thickness of the coating layer 22 is 48nm to 51.6nm. Preferably, the second MgF 2 The thickness of the coating layer 22 was 50.62nm. The third MgF 2 The thickness of the coating layer 24 is 11nm to 13.1nm. Preferably, the third MgF 2 The thickness of the coating layer 24 was 12.11nm. The fourth MgF 2 The thickness of the coating layer 26 is 98nm to 100.9nm. Preferably, the fourth MgF 2 The thickness of the coating layer 26 was 100.08nm.
In the embodiment of the present utility model, the first refractive film layer 21, the second refractive film layer 23, and the third refractive film layer 25 are lanthanum carbonate film layers. Also, in order to meet the light transmittance requirement, the refractive film layer needs to be thickness-designed. Specifically, the thickness of the first refractive film layer 21 is 20nm to 21.45nm. Preferably, the thickness of the first refractive film layer 21 is 20.45nm. The thickness of the second refractive film layer 23 is 55nm to 58.7nm, and preferably, the thickness of the second refractive film layer 23 is 57.37nm. The thickness of the third refraction film layer 25 is 58 nm-60.5 nm, preferably, the thickness of the third refraction film layer 25 is 59.45nm.
The above-mentioned preferable film layers are used for multiple reflectivity tests on a lens applied to an endoscope, the test results are shown in fig. 3, fig. 3 shows a state of reflectivity change of the lens applied to the endoscope under different wavelengths of incident light, the X-axis is the wavelength of the incident light in fig. 3, the Y-axis is the reflectivity of the lens applied to the endoscope, and the reflectivity of the lens applied to the endoscope is less than 0.2% under the condition that the wavelength of the incident light is about 420nm to 685nm, which means that the lens applied to the endoscope of the embodiment has good light transmittance.
More specifically, the lens substrate 1 includes a lens body 11, the lens body 11 includes an outer end 110 and an inner end 111, the outer end 110 is a plane, the inner end 111 is provided with a concave surface, and the first MgF 2 Film coating layer 20, first refraction film layer 21, second MgF 2 Coating layer 22, second refraction film layer 23 and third MgF 2 Coating layer 24, third refraction film layer 25 and fourth MgF 2 The coating layers 26 are all disposed on the concave surface of the inner end 111. Through reasonable structural design, satisfy installation user demand. In this embodiment, the outer end 110 is a plane, the radius is 2.6mm, the radius of curvature of the concave surface of the inner end 111 is 0.7mm, the thickness from the outer end 110 to the inner end 111 is 1.14mm, and the distance from the outer end 110 to the concave point of the inner end is 0.75mm.
The utility model provides a lens applied to an endoscope, which is formed by repeatedly plating a magnesium fluoride coating with low refractive index through the staggered collocation of a reasonable magnesium fluoride film layer and a refractive film layer, so that the whole lens has stronger anti-reflection performance, is suitable for the endoscope lens with smaller radius and smaller curvature radius, ensures the light transmittance and improves the imaging quality of the lens.
The foregoing description of one or more embodiments provided in connection with the specific disclosure is not intended to limit the practice of the utility model to such description. The method, structure, and the like similar to or identical to those of the present utility model, or a plurality of technical deductions or substitutions are made on the premise of the conception of the present utility model, and are considered to be the protection scope of the present utility model.
Claims (9)
1. The utility model provides a be applied to lens on endoscope, includes lens substrate (1), its characterized in that, lens substrate (1) includes lens main part (11), lens main part (11) include outside end (110) and inboard end (111), outside end (110) are the plane, be equipped with the concave surface on inboard end (111), the surface of concave surface is from interior to exterior equipped with first MgF in proper order 2 A coating layer (20), a first refraction film layer (21) and a second MgF 2 A coating layer (22), a second refraction film layer (23) and a third MgF 2 A coating layer (24), a third refraction film layer (25) and a fourth MgF 2 A coating layer (26).
2. The lens of claim 1, wherein the first MgF is 2 The thickness of the coating layer (20) is 45 nm-46.7 nm.
3. The lens of claim 1, wherein the second MgF is a lens for endoscope 2 The thickness of the coating layer (22) is 48 nm-51.6 nm.
4. The lens of claim 1, wherein the third MgF is a lens of an endoscope 2 The thickness of the coating layer (24) is 11 nm-13.1 nm.
5. The lens of claim 1, wherein the fourth MgF is a lens for endoscope 2 The thickness of the coating layer (26) is 98 nm-100.9 nm.
6. The lens of claim 1, wherein the first refractive film layer (21), the second refractive film layer (23) and the third refractive film layer (25) are lanthanum carbonate film layers.
7. A lens according to claim 6, wherein the thickness of the first refractive film layer (21) is 20 nm-21.45 nm.
8. A lens according to claim 6, characterized in that the thickness of the second refractive film layer (23) is 55nm to 58.7nm.
9. A lens according to claim 8, wherein the thickness of the third refractive film layer (25) is 58nm to 60.5nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223495071.2U CN219641955U (en) | 2022-12-27 | 2022-12-27 | Lens applied to endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223495071.2U CN219641955U (en) | 2022-12-27 | 2022-12-27 | Lens applied to endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219641955U true CN219641955U (en) | 2023-09-05 |
Family
ID=87811221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223495071.2U Active CN219641955U (en) | 2022-12-27 | 2022-12-27 | Lens applied to endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219641955U (en) |
-
2022
- 2022-12-27 CN CN202223495071.2U patent/CN219641955U/en active Active
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