CN113050208B - Resin prism lens, film coating method thereof and long-focus camera - Google Patents
Resin prism lens, film coating method thereof and long-focus camera Download PDFInfo
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- CN113050208B CN113050208B CN202110260946.1A CN202110260946A CN113050208B CN 113050208 B CN113050208 B CN 113050208B CN 202110260946 A CN202110260946 A CN 202110260946A CN 113050208 B CN113050208 B CN 113050208B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention providesA resin prism lens, a coating method thereof and a long-focus camera. A resin prism lens comprising: a prism lens; a plurality of first subset layers; a plurality of second sub-layers, a plurality of first sub-layers and a plurality of second sub-layers alternately stacked, the first sub-layers and the second sub-layers having different refractive indices, a total thickness D of the plurality of first sub-layers H Total And a total thickness D of the second plurality of sub-layers L total The ratio of (2) is as follows: 0.50<D H Total /D L total <1.50. The invention solves the problem of high cost of the multi-reflection periscope type long-focus camera in the prior art.
Description
Technical Field
The invention relates to the technical field of optical imaging equipment, in particular to a resin prism lens, a film coating method thereof and a long-focus camera.
Background
Along with the development of high-end mobile phone models, the application of the multi-reflection periscope type super-long focal lens on the mobile phone is wider and wider, the multi-reflection periscope type super-long focal lens enables the mobile phone to greatly increase the focal length, makes up the internal zooming deficiency, achieves the professional camera level, and the periscope type structure can greatly reduce the thickness of a mobile phone module, so that the multi-reflection periscope type super-long focal lens becomes an important direction of the development of the smart mobile phone camera.
The multi-reflection periscope type long-focus camera is characterized in that light rays are refracted into a mobile phone lens module through a triple prism, a common triple prism material is made of a glass material, the triple prism is poor in anti-impact capability and fragile, the triple prism is enabled to have the phenomena of lens leakage and the like, the cost is high, the performance of the multi-reflection periscope type long-focus camera is adversely affected, and the technical threshold is increased.
That is, the multi-reflection periscope type tele camera in the prior art has the problem of high cost.
Disclosure of Invention
The invention mainly aims to provide a resin prism lens, a film coating method thereof and a long-focus camera, so as to solve the problem of high cost of the multi-reflection periscope type long-focus camera in the prior art.
To achieve the above object, according to one aspect of the present invention, there is provided a resin prism lens, packageThe method comprises the following steps: a prism lens; a plurality of first subset layers; a plurality of second sub-layers, a plurality of first sub-layers and a plurality of second sub-layers alternately stacked, the first sub-layers and the second sub-layers having different refractive indices, a total thickness D of the plurality of first sub-layers H Total And a total thickness D of the second plurality of sub-layers L total The ratio of (2) is as follows: 0.50<D H Total /D L total <1.50。
Further, the refractive index of the first subset layer is greater than the refractive index of the second subset layer.
Further, the refractive index of the first sub-set layer is 2.2 or more and 2.3 or less.
Further, the refractive index of the second subset layer is 1.4 or more and 1.6 or less.
Further, the material of the first sub-layer comprises nitride, fluoride, sulfide, selenide, silicon hydride, silicon germanium hydride, siC, nb 2 O 5 、Ta 2 O 5 And at least one of oxides of Ti.
Further, the material of the second subset layer comprises SiO 2 、Al 2 O 3 、TiO 2 、Nb 2 O 5 、Ta 2 O 5 、MgF 2 、NbTiO x 、ZrO 2 、Y 2 O 3 、HfO 2 、S 3 N 4 At least one of boron-based material and phosphorus-based material.
Further, the material of the prism lenses includes one of EP, APEL, zeonex, PMMA.
Further, the refractive index of the prism lens is 1.5 or more and 1.7 or less.
According to another aspect of the present invention, there is provided a coating method of a resin prism lens, the above-mentioned coating method of a resin prism lens, the coating method of a resin prism lens comprising: step S1: after the prism lens of the resin prism lens is placed in a coating machine, the coating parameters of the coating machine are adjusted; step S2: forming a first sub-layer on the surface of the prism lens in a coating environment of the first sub-layer of the resin prism lens, and adjusting coating parameters; step S3: forming a second sub-layer on the surface of the first sub-layer in a coating environment of the second sub-layer forming the resin prism lens; step S4: the number of first subset layers is N, and the number of second subset layers is M: ending the film plating if N and M are both 1; if N is greater than 1 and M is equal to N, repeating the steps S2 and S3 for M times, and ending the film plating; if N is greater than 1 and M is less than N, repeating the steps S2 and S3 for M times, and ending the film plating after the step S2 is executed.
Further, in step S1, further includes: adjusting the vacuum degree of the coating machine to 3.0E -3 pa; adjusting the coating temperature of the coating machine to be between 90 and 100 ℃; and adjusting the coating time of the coating machine to 60min.
Further, in step S2, further includes: adjusting the ion source using power of the coating machine to be 800/800/600; adjusting the oxygenation flow rate of the film plating machine to 60SCCM; the deposition rate of the coating machine was adjusted to 0.3nm/s to form a coating environment for the first sub-layer.
Further, in step S3, further includes: adjusting the ion source use power of the film plating machine to 300/600/600; adjusting the oxygenation flow of 10SCCM of the coating machine; the deposition rate of the coating machine was adjusted to 0.5nm/s to form a coating environment for the second sub-layer.
According to another aspect of the present invention, there is provided a tele camera comprising the above resin prism lens.
By applying the technical scheme of the invention, the resin prism lens comprises a prism lens, a plurality of first sub-layer and a plurality of second sub-layer, wherein the first sub-layer and the second sub-layer are alternately overlapped, the refractive indexes of the first sub-layer and the second sub-layer are different, and the total thickness D of the first sub-layer H Total And a total thickness D of the second plurality of sub-layers L total The ratio of (2) is as follows: 0.50<D H Total /D L total <1.50。
By arranging a plurality of first sub-layers and second sub-layers which are alternately stacked on the prism lens, a film system can be formed on the surface of the prism lens, the optical performance of the prism lens can be ensured not to be affected, and the structural strength of the prism lens can be further increased, and the first sub-layers on the surface of the prism lensAnd the second subset layer is capable of increasing the smoothness of the prism lens surface, thereby increasing the reflectivity of the prism lens surface. In addition, the prism lens in the application is a resin prism lens, and the resin prism lens has the advantages of being not fragile and strong in impact resistance relative to a glass lens, is not easy to generate a phenomenon of 'gas', has good safety performance and excellent colorability, and greatly reduces the cost and weight of the lens. By combining the total thickness D of the first sub-layers H Total And a total thickness D of the second sub-set of layers L total The ratio of (2) is limited to between 0.5 and 1.5 such that the total thickness of the first sub-layer and the total thickness of the second sub-layer are smaller, facilitating the fabrication of the first sub-layer and the second sub-layer.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 shows a schematic structural view of a resin prism lens of an alternative embodiment of the present invention; and
fig. 2 shows a schematic view of the reflectance curve of the resin prism sheet of fig. 1.
Wherein the above figures include the following reference numerals:
10. a prism lens; 20. a first subset layer; 30. a second subset layer.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present invention.
In order to solve the problem of high cost of the multi-reflection periscope type long-focus camera in the prior art, the invention provides a resin prism lens, a film coating method thereof and the long-focus camera.
As shown in fig. 1 to 2, the resin prism lens includes a prism lens 10, a plurality of first sub-set layers 20 and a plurality of second sub-set layers 30, the plurality of first sub-set layers 20 and the plurality of second sub-set layers 30 are alternately stacked, refractive indexes of the first sub-set layers 20 and the second sub-set layers 30 are different, and a total thickness D of the plurality of first sub-set layers 20 H Total And a total thickness D of the second plurality of sub-layers 30 L total The ratio of (2) is as follows: 0.50<D H Total /D L total <1.50。
By providing a plurality of first sub-set layers 20 and second sub-set layers 30 alternately stacked on the prism lens, a film system can be formed on the surface of the prism lens, the optical performance of the prism lens can be ensured not to be affected, the structural strength of the prism lens can be further increased, the smoothness of the prism lens can be further increased by the first sub-set layers 20 and the second sub-set layers 30 on the surface of the prism lens, and the reflectivity of the surface of the prism lens can be further increased. In addition, the prism lens in the application is a resin prism lens, and the resin prism lens has the advantages of being not fragile and strong in impact resistance relative to a glass lens, is not easy to generate a phenomenon of 'gas', has good safety performance and excellent colorability, and greatly reduces the cost and weight of the lens. By combining the total thickness D of the first sub-layer 20 H Total And the total thickness D of the second sub-layer 30 L total Is limited to a ratio of between 0.5 and 1.5 such that the total thickness of the first sub-layer 20 and the total thickness of the second sub-layer 30 are smaller, facilitating the fabrication of the first sub-layer 20 and the second sub-layer 30.
Specifically, the refractive index of the first sub-set layer 20 is greater than the refractive index of the second sub-set layer 30. The refractive index of the first sub-set layer 20 and the refractive index of the second sub-set layer 30 are different, so that light rays can be deflected and reflected to different degrees when propagating between the first sub-set layer 20 and the second sub-set layer 30, and the reflectivity of the resin prism lenses to light can be greatly increased.
In the present embodiment, the refractive index of the first sub-set layer 20 is 2.2 or more and 2.3 or less. The arrangement is such that the first sub-set layer 20 has a higher refractive index, and light rays enter the first sub-set layer 20 from the optical-hydrophobic medium to be reflected more easily, so that the surface reflectivity of the resin prism lens is increased.
Specifically, the refractive index of the first sub-set layer 20 may be 2.2, 2.22, 2.24, 2.25, 2.26, 2.28, 2.3.
In the present embodiment, the refractive index of the second sub-set layer 30 is 1.4 or more and 1.6 or less. The arrangement is such that the first sub-layer 20 and the second sub-layer 30 have a certain refractive index difference, so that the deflection angle of the light ray at the second sub-layer 30 is different from the reflection angle at the first sub-layer 20, thereby greatly increasing the diversity of the reflection of the light ray in the film system and greatly increasing the reflection of the light ray.
Specifically, the material of the first sub-layer 20 includes nitride, fluoride, sulfide, selenide, silicon hydride, silicon germanium hydride, siC, nb 2 O 5 、Ta 2 O 5 And at least one of oxides of Ti. The first sub-layer 20 may be made of nitride, fluoride, sulfide, selenide, silicon hydride, silicon germanium hydride, siC, nb 2 O 5 、Ta 2 O 5 And one of the oxides of Ti, but may be nitride, fluoride, sulfide, selenide, silicon hydride, silicon germanium hydride, siC, nb 2 O 5 、Ta 2 O 5 And several substances in the oxide of Ti are mixed together. Mixing herein refers to physical mixing rather than chemical reaction to produce new substances.
Specifically, the material of the second subset layer 30 includes SiO 2 、Al 2 O 3 、TiO 2 、Nb 2 O 5 、Ta 2 O 5 、MgF 2 、NbTiO x 、ZrO 2 、Y 2 O 3 、HfO 2 、S 3 N 4 At least one of boron-based material and phosphorus-based material. The second sub-set layer 30 may be made of SiO 2 、Al 2 O 3 、TiO 2 、Nb 2 O 5 、Ta 2 O 5 、MgF 2 、NbTiO x 、ZrO 2 、Y 2 O 3 、HfO 2 、S 3 N 4 One of the boron-based material and the phosphorus-based material, which can be SiO 2 、Al 2 O 3 、TiO 2 、Nb 2 O 5 、Ta 2 O 5 、MgF 2 、NbTiO x 、ZrO 2 、Y 2 O 3 、HfO 2 、S 3 N 4 The boron-based material and the phosphorus-based material are mixed together. It should be noted that the mixing here is physical mixing and not chemical reaction to generate new substances.
In a particular embodiment, the material of the first sub-set layer 20 is Ti 3 O 5 The second sub-layer 30 is SL-4 with a main composition of 96% SiO 2 And 4% Al 2 O 3 . Specifically, the material of the prism lens 10 includes one of EP, APEL, zeonex, PMMA. The arrangement ensures that the prism lens has better safety performance, light weight, difficult fragmentation, excellent colorability, greatly reduced cost and reduced weight of the mobile phone lens.
Specifically, the material of the prism lens 10 is EP-8000.
In the present embodiment, the refractive index of the prism lens 10 is 1.5 or more and 1.7 or less. The arrangement is such that the refractive index of the prism lens 10 is relatively close to both the refractive indices of the first sub-layer 20 and the second sub-layer 30, such that the prism lens 10 can be coupled to the first sub-layer 20 such that the prism lens 10 is better matched to the first sub-layer 20 and the second sub-layer 30.
A specific example is described.
In this example, the film system is twenty-six layers, starting from one side of the prism lens 10,the first layer is the first sub-layer 20, the second layer is the second sub-layer 30, the third layer is the first sub-layer 20, and the fourth layer is the second sub-layer 30, and thus the repeating is performed thirteen times to form a twenty-six layer film system. Wherein the first sub-set layer 20 is Ti 3 O 5 The second sub-layer 30 is Al 2 O 3 And SiO 2 Is a mixture of (a) and (b). The refractive index in this example means a refractive index at a wavelength of 550nm, and the ratio of the film thicknesses of the twenty-six film systems is 8:100:40:70:40:70:40:80:40:80:40:80:40:90:50:130:60:110:50:130:50:110:50:140:50:230, the unit of thickness is nm. In this example, the resin prism sheet has an average reflectance Rave of 95% or more in the visible light range of 400 to 700nm and a minimum reflectance Rmin of 92% or more in the visible light range of 400 to 700 nm.
The resin prism lens adopts the coating method of the resin prism lens, and the coating method of the resin prism lens comprises the following steps: step S1: after the prism lens 10 of the resin prism lens is placed in a coating machine, the coating parameters of the coating machine are adjusted; step S2: forming a first sub-layer 20 on the surface of the prism lens 10 in a coating environment of the first sub-layer 20 forming a resin prism lens, and adjusting coating parameters; step S3: forming a second sub-layer 30 on the surface of the first sub-layer 20 in a plating atmosphere of the second sub-layer 30 constituting the resin prism lens; step S4: the number of first subset layers 20 is N and the number of second subset layers 30 is M: ending the film plating if N and M are both 1; if N is greater than 1 and M is equal to N, repeating the steps S2 and S3 for M times, and ending the film plating; if N is greater than 1 and M is less than N, repeating the steps S2 and S3 for M times, and ending the film plating after the step S2 is executed. This arrangement allows for alternating plating of the first sub-set layer 20 and the second sub-set layer 30 on the surface of the prism lens to form a film system on the surface of the prism lens to increase the reflectivity of the resin prism lens.
It should be noted that, according to the actual film system, the second sub-layer 30 may be first coated on the surface of the prism lens 10 and then the first sub-layer 20 may be coated.
Specifically, step S1 further includes: vacuum degree of film plating machine is adjusted3.0E -3 pa; adjusting the coating temperature of the coating machine to be between 90 and 100 ℃; and adjusting the coating time of the coating machine to 60min. This arrangement can form a uniform and dense film layer on the surface of the prism sheet 10.
Specifically, step S2 further includes: adjusting the ion source using power of the coating machine to be 800/800/600; adjusting the oxygenation flow rate of the film plating machine to 60SCCM; the deposition rate of the coater was adjusted to 0.3nm/s to form a coating environment for the first sub-layer 20. Because the requirements of the first sub-layer 20 and the second sub-layer 30 are different, the plating environment of the first sub-layer 20 can be set according to the requirements of the material of the first sub-layer 20 when the first sub-layer 20 is plated.
Specifically, step S3 further includes: adjusting the ion source use power of the film plating machine to 300/600/600; adjusting the oxygenation flow of 10SCCM of the coating machine; the deposition rate of the coater was adjusted to 0.5nm/s to form the coating environment for the second sub-layer 30. Because the requirements of the first sub-layer 20 and the second sub-layer 30 are different, the plating environment of the second sub-layer 30 can be set according to the requirements of the material of the second sub-layer 30 when the second sub-layer 30 is plated.
The tele camera comprises the resin prism lens. The long-focus camera with the resin prism lens has the advantages of low cost and stable shooting.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A resin prism lens, comprising:
a prism lens (10);
-a plurality of first sub-layers (20), said first sub-layers (20) being connected to said prismatic lens (10);
a plurality of second sub-layers (30), a plurality of the first sub-layers (20) and a plurality of the second sub-layers (30) being alternately stacked, the first sub-layers (20) and the second sub-layers (30) having different refractive indices, a total thickness D of the plurality of first sub-layers (20) H Total And a total thickness D of a plurality of said second sub-layers (30) L total The ratio of (2) is as follows: 0.50<
D H Total /D L total <1.50；
The average reflectivity Rave of the resin prism lens in the visible light wave band range of 400-700nm is more than or equal to 95%;
-the refractive index of the first sub-layer (20) is greater than the refractive index of the second sub-layer (30);
the refractive index of the first sub-set layer (20) is 2.2 or more and 2.3 or less;
the refractive index of the second sub-set layer (30) is 1.4 or more and 1.6 or less.
2. The resin prism lens of claim 1, wherein the material of the first sub-layer (20) comprises nitride, fluoride, sulfide, selenide, silicon hydride, silicon germanium hydride, siC, nb 2 O 5 、Ta 2 O 5 And at least one of oxides of Ti.
3. The resin prism lens according to claim 1, wherein the material of the second subset layer (30) comprises SiO 2 、Al 2 O 3 、TiO 2 、Nb 2 O 5 、Ta 2 O 5 、MgF 2 、NbTiO x 、ZrO 2 、Y 2 O 3 、HfO 2 、S 3 N 4 At least one of boron-based material and phosphorus-based material.
4. The resin prism lens according to claim 1, wherein the material of the prism lens (10) comprises one of EP, APEL, zeonex, PMMA.
5. The resin prism lens according to claim 1, wherein the refractive index of the prism lens (10) is 1.5 or more and 1.7 or less.
6. A coating method of a resin prism lens, characterized in that the resin prism lens according to any one of claims 1 to 5 is produced by using the coating method of a resin prism lens, the coating method of a resin prism lens comprising:
step S1: after the prism lens (10) of the resin prism lens is placed in a coating machine, coating parameters of the coating machine are adjusted;
step S2: forming a coating environment of the first subset layer (20) of the resin prism lens, forming the first subset layer (20) on the surface of the prism lens (10), and adjusting the coating parameters;
step S3: forming a second sub-layer (30) of the resin prism lens on the surface of the first sub-layer (20) in a plating atmosphere;
step S4: -the number of first subset layers (20) is N, -the number of second subset layers (30) is M: ending the film plating if N and M are both 1; if N is greater than 1 and M is equal to N, repeating the step S2 and the step S3 for M times, and ending the film plating; if N is greater than 1 and M is less than N, repeating the step S2 and the step S3M times, and ending the film plating after executing the step S2.
7. The method of coating a resin prism lens according to claim 6, further comprising, in the step S1:
adjusting the vacuum degree of the film plating machine to 3.0E -3 pa；
Adjusting the coating temperature of the coating machine to be between 90 and 100 ℃;
and adjusting the coating time of the coating machine to 60min.
8. The method of coating a resin prism lens according to claim 6, further comprising, in the step S2:
adjusting the ion source using power of the film plating machine to be 800/800/600;
adjusting the oxygenation flow rate of 60SCCM of the film plating machine;
the deposition rate of the coating machine is adjusted to 0.3nm/s to form a coating environment for the first sub-layer (20).
9. The method of coating a resin prism lens according to claim 6, further comprising, in the step S3:
adjusting the ion source use power of the film plating machine to 300/600/600;
adjusting the oxygenation flow rate of 10SCCM of the film plating machine;
the deposition rate of the coating machine is adjusted to 0.5nm/s to form a coating environment for the second subset layer (30).
10. A tele camera comprising the resin prism lens of any one of claims 1 to 5.
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| CN202110260946.1A CN113050208B (en) | 2021-03-10 | 2021-03-10 | Resin prism lens, film coating method thereof and long-focus camera |
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| CN202110260946.1A CN113050208B (en) | 2021-03-10 | 2021-03-10 | Resin prism lens, film coating method thereof and long-focus camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4212291B2 (en) * | 2002-04-10 | 2009-01-21 | オリンパス株式会社 | Zoom lens and electronic imaging apparatus using the same |
| CN101421641A (en) * | 2004-02-12 | 2009-04-29 | Api毫微制造及研究公司 | Films for optical use and methods of making such films |
| JP2008145482A (en) * | 2006-12-06 | 2008-06-26 | Epson Toyocom Corp | Manufacturing method of right-angled triangular prism |
| CN103424846A (en) * | 2012-05-18 | 2013-12-04 | 华晶科技股份有限公司 | Optical lens set for camera shooting and camera shooting device thereof |
| ES2908652T3 (en) * | 2015-04-16 | 2022-05-03 | Corephotonics Ltd | Autofocus and optical image stabilization in a compact folding camera |
| JP6855702B2 (en) * | 2016-08-12 | 2021-04-07 | コニカミノルタ株式会社 | Light-reflecting film, manufacturing method of light-reflecting film, and backlight unit for liquid crystal display device |
| CN206096589U (en) * | 2016-09-23 | 2017-04-12 | 浙江水晶光电科技股份有限公司 | Uncovered periscopic optical zoom lens module for cell -phone |
| WO2018180269A1 (en) * | 2017-03-31 | 2018-10-04 | Ａｇｃ株式会社 | Optical element and manufacturing method for optical element |
| CN107450116B (en) * | 2017-10-13 | 2024-04-09 | 南京优瑞谱科技有限公司 | Periscope reflective triple prism |
| CN208076821U (en) * | 2018-04-26 | 2018-11-09 | 信泰光学(深圳)有限公司 | The periscope head module of hand-held device |
| CN110174718A (en) * | 2019-06-28 | 2019-08-27 | 浙江舜宇光学有限公司 | Plated film lens and optical imaging device |
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