CN212540766U - Optical array lens - Google Patents
Optical array lens Download PDFInfo
- Publication number
- CN212540766U CN212540766U CN202020797413.8U CN202020797413U CN212540766U CN 212540766 U CN212540766 U CN 212540766U CN 202020797413 U CN202020797413 U CN 202020797413U CN 212540766 U CN212540766 U CN 212540766U
- Authority
- CN
- China
- Prior art keywords
- optical waveguide
- array
- optical
- rectangle
- lens
- 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
Images
Abstract
The utility model discloses an optics array lens, optics array lens includes: a first optical waveguide array, the first optical waveguide array comprising: the optical waveguide comprises a first optical waveguide and a second optical waveguide which are the same in length, wherein the cross section of the first optical waveguide is a first rectangle, and the cross section of the second optical waveguide is a first right-angle triangle; a second optical waveguide array disposed at one side of the first optical waveguide array, the second optical waveguide array including: the optical waveguide structure comprises a third optical waveguide, a fourth optical waveguide and a fifth optical waveguide which are the same in length, wherein the cross section of the third optical waveguide is a second rectangle, the cross section of the fourth optical waveguide is a second right triangle, and the cross section of the fifth optical waveguide is a third right triangle, wherein the projection of the light passing surface of the first optical waveguide and the projection of the light passing surface of the second optical waveguide on a plane have the overlapping degree a, and a is less than 100. The optical array lens adopts a double-optical waveguide array and a multi-row and multi-column structure, so that the imaging resolution is improved, and the difficulty of a processing technology is not increased.
Description
Technical Field
The utility model belongs to the technical field of the optics technique and specifically relates to an optical array lens is related to.
Background
At present, the imaging and display devices in the market are diversified, and the products have respective advantages, so that the requirements of consumers on the service performance of the products are continuously improved, the products of various manufacturers are continuously updated, and the products with more excellent performance are manufactured to meet the requirements of the consumers.
However, most flat lenses adopt a single array, multiple rows and multiple columns structure, and in order to improve the imaging resolution, the purpose of reducing the size of each optical waveguide in the array is usually achieved, and the method usually causes the difficulty of the processing technology to increase, thereby increasing the manufacturing cost greatly.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide an optical array lens, which can improve the imaging resolution and avoid the increase of the difficulty of the processing process.
According to the utility model discloses an optical array lens, include: a first optical waveguide array comprising: the optical waveguide array comprises a first optical waveguide and a second optical waveguide which are the same in length, wherein the cross section of the first optical waveguide is a first rectangle, the cross section of the second optical waveguide is a first right triangle, a plurality of first optical waveguides are distributed in the first optical waveguide array, and a plurality of second optical waveguides surround the outer side of the first optical waveguide array; the second optical waveguide array, the second optical waveguide array sets up in one side of the first optical waveguide array, the second optical waveguide array includes: the optical waveguide array comprises a third optical waveguide, a fourth optical waveguide and a fifth optical waveguide which are the same in length, wherein the cross section of the third optical waveguide is a second rectangle, the cross section of the fourth optical waveguide is a second right triangle, the cross section of the fifth optical waveguide is a third right triangle, a plurality of third optical waveguides are distributed in the second optical waveguide array, a plurality of fourth optical waveguides are distributed at the outer edge of the second optical waveguide array, and a plurality of fifth optical waveguides are distributed at the end corners of the second optical waveguide array, wherein the projection of the light passing surface of the first optical waveguide and the projection of the light passing surface of the third optical waveguide on the plane have the overlapping degree a, and a is less than 100.
According to the utility model discloses an optical array lens adopts two optical waveguide arrays, and the multirow multiseriate structure when improving imaging resolution, can not increase the processing technology degree of difficulty to do not improve the processing cost when can realizing high quality formation of image.
In some examples of the invention, the first optical waveguide has a length LA1，LA1Satisfy the relation:
the second optical waveguide has a length LB1，LB1Satisfy the relation:
wherein, thetaA2，θB2Angle of refraction, d, respectively, for selected light raysA11And dA12Respectively the two side dimensions of the cross-section of the first optical waveguide, dB11And dB12Two side dimensions, t, of the cross section of the third optical waveguideAIs a positive integer, tBIs 0 or other positive integer.
In some examples of the invention, the length of the third optical waveguide is different from the length of the first optical waveguide, and the two sides of the first rectangle are the same as the two sides of the second rectangle, respectively.
In some examples of the present invention, the two sides of the first rectangle and the two right-angle sides of the first right-angle triangle are respectively disposed in the same and parallel manner.
In some examples of the present invention, the two sides of the second rectangle and the two right-angled sides of the second right-angled triangle are respectively arranged in the same and parallel manner, and the one side of the second rectangle and the hypotenuse of the third right-angled triangle are arranged in the same and parallel manner.
In some examples of the invention, the two sides of the first rectangle and the second rectangle are d1 and d2, respectively, 0.1mm < d1<10mm, 0.1mm < d2<10 mm.
In some examples of the invention, a < 50.
In some examples of the present invention, a is 25.
In some examples of the invention, two adjacent sides between the first optical waveguides, the first optical waveguides and sides between the second optical waveguides, two adjacent sides between the third optical waveguides, the third optical waveguides and sides between the fourth optical waveguides, and the third optical waveguides and sides between the fifth optical waveguides are provided with a reflective layer.
In some examples of the present invention, the reflective layer is a metal reflective layer, and the metal reflective layer is one of an aluminum reflective layer, a silver reflective layer, and a gold reflective layer.
In some examples of the present invention, the side of all optical waveguides does not have a reflective layer, the first optical waveguide and between the side of the second optical waveguide, the third optical waveguide and between the fourth optical waveguide, the third optical waveguide and between the fifth optical waveguide, and the first optical waveguide array and all be provided with first adhesive between the second optical waveguide array, the first optical waveguide the second optical waveguide the third optical waveguide the fourth optical waveguide with the refracting index of fifth optical waveguide all is greater than the refracting index of first adhesive.
In some examples of the present invention, the first adhesive glue is a photosensitive glue or a thermosensitive glue.
In some examples of the present invention, the optical array lens further includes: the first glass layer is arranged on one side, away from the second optical waveguide array, of the first optical waveguide array, and the second glass layer is arranged on one side, away from the first optical waveguide array, of the second optical waveguide array.
In some examples of the present invention, the first glass layer is provided with an antireflection film on one side facing away from the first optical waveguide array, and the second glass layer is provided with an antireflection film on one side facing away from the second optical waveguide array.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an optical array lens according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first optical waveguide;
FIG. 3 is a schematic diagram of a third optical waveguide;
FIG. 4 is a schematic diagram of a second optical waveguide;
FIG. 5 is a schematic illustration of a fourth optical waveguide;
FIG. 6 is a schematic diagram of a fifth optical waveguide;
FIG. 7 is a schematic diagram of two types of optical waveguide array combination for reducing imaging light spots;
FIG. 8 is a schematic layout of a first optical waveguide array;
fig. 9 is a schematic arrangement diagram of the second optical waveguide array.
Reference numerals:
an optical array lens 1;
a first optical waveguide array 10; a first optical waveguide 11; a first rectangle 110;
a second optical waveguide 12; a first right triangle 120;
a second optical waveguide array 20; a third optical waveguide 21; a second rectangle 210;
a fourth optical waveguide 22; a second right triangle 220;
a fifth optical waveguide 23; a third right triangle 230;
a first adhesive 30; a first glass layer 40; a second glass layer 50.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
An optical array lens 1 according to an embodiment of the present invention is described below with reference to fig. 1 to 9.
As shown in fig. 1 to 6, an optical array lens 1 according to an embodiment of the present invention includes: a first optical waveguide array 10 and a second optical waveguide array 20. The first optical waveguide array 10 includes: a first optical waveguide 11 and a second optical waveguide 12 having the same length, the first optical waveguide 11 having a cross-section of a first rectangle 110, and the second optical waveguide 12 having a cross-section of a first right-angled triangle 120.
The second optical waveguide array 20 is disposed at one side of the first optical waveguide array 10, and the second optical waveguide array 20 includes: the optical waveguide structure comprises a third optical waveguide 21, a fourth optical waveguide 22 and a fifth optical waveguide 23 which are the same in length, wherein the cross section of the third optical waveguide 21 is a second rectangle 210, the cross section of the fourth optical waveguide 22 is a second right triangle 220, and the cross section of the fifth optical waveguide 23 is a third right triangle 230.
As shown in fig. 8 and 9, the plurality of first optical waveguides 11 are distributed inside the first optical waveguide array 10, the plurality of second optical waveguides 12 are surrounded outside the first optical waveguide array 10, the plurality of third optical waveguides 21 are distributed inside the second optical waveguide array 20, the plurality of fourth optical waveguides 22 are distributed at an outer edge of the plurality of second optical waveguide arrays 20 and the plurality of fifth optical waveguides 23 are distributed at an end corner of the second optical waveguide arrays 20.
The projection of the light-passing surface of the first optical waveguide 11 and the projection of the light-passing surface of the second optical waveguide 12 on a plane have an overlap degree a, wherein a is less than 100. That is, the optical array lens 1 of the present invention employs the dual optical waveguide array, and light enters the third optical waveguide 21 of the second optical waveguide array 20 after passing through the first optical waveguide 11 of the first optical waveguide array 10, thereby realizing light transmission.
As shown in fig. 7, θA1，θB1The light enters the first optical waveguide 11 and is divided into two beams, an imaginary line part and a solid line part, the imaginary line part reflects even times in the first optical waveguide 11, enters the third optical waveguide 21 to reflect odd times, then is emitted from the third optical waveguide 21 to reach the image plane O ', the solid line part light beam reflects odd times in the first optical waveguide 11, enters the third optical waveguide 21, the light does not reflect through the optical waveguide unit or reflects even times, then is emitted from the third optical waveguide 21 to reach the image plane O ', the solid line light beam and the dotted line light beam coincide at the position of the image plane O ', and the solid line light beam and the dotted line light beam are both smaller than the original light beam, so that the spot size formed by the two beams of light at the image plane is smaller than the original light beam size, and the imaging resolution is improved.
Therefore, the multi-row and multi-column structure of the double-optical waveguide array is adopted, the imaging resolution is improved, the difficulty of the processing technology is not increased, and the processing cost is not increased while high-quality imaging is realized.
According to an alternative embodiment of the invention, the first optical waveguide 11 has a length LA1，LA1Satisfy the relation:
sin(θA1)＝nAsin(θA2)
the second optical waveguide 12 has a length LB1，LB1Satisfy the relation:
sin(θB1)＝nBsin(θB2)
wherein, thetaA1，θB1Respectively, the angle of incidence, n, corresponding to the selected light rayA，nBRefractive indices of materials, theta, of the first optical waveguide 11 and the third optical waveguide 21, respectivelyA2，θB2Angle of refraction, d, respectively, for selected light raysA11And dA12Two side dimensions, d, of the cross-section of the first optical waveguide 11, respectivelyB11And dB12Two side dimensions, t, of the cross section of the third optical waveguide 21AIs a positive integer, tBIs 0 or other positive integer. In the first optical waveguide array 10 and the second optical waveguide array 20, the optical waveguide units are arranged in an oblique direction, and each optical waveguide unit is arranged at an angle θ with respect to the array frame, where θ may be set between 40 ° and 50 °, for example, 45 °.
According to an alternative embodiment of the present invention, as shown in fig. 2 and 3, the length of the third optical waveguide 21 is different from the length of the first optical waveguide 11, and the two sides of the first rectangle 110 are respectively the same as the two sides of the second rectangle 210. As shown in fig. 2 and 3, that is, LA1And LB1Is not the same, but dA11、dA12And dB11、dB12The two beams of light are respectively the same, so that the spot size formed by the two beams of light at the image surface is smaller than the original beam size, and the imaging resolution is improved.
Alternatively, as shown in fig. 4, two sides of the first rectangle 110 and two right-angled sides of the first right-angled triangle 120 are respectively arranged in parallel and identical. As shown in fig. 2, 4 and 8, that is, d of the first rectangle 110A12、dA11D from the first right triangle 120A22、dA23The first rectangle 110 and the first right triangle 120 are closely attached to each other, so that the first optical waveguide array 10 can be combined, the structural stability of the first optical waveguide array 10 can be ensured, and the imaging resolution can be improved.
Two sides of the second rectangle 210 and two right-angled sides of the second right-angled triangle 220 are respectively the same and arranged in parallel, and one side of the second rectangle 210 and the hypotenuse of the third right-angled triangle 230 are the same and arranged in parallel. As shown in fig. 3, 5, 6 and 9, that is, d of the second rectangle 210B11、dB12And a second right-angle triangleD of shape 220B23、dB22Respectively identical, and the sides are arranged parallel to each other, d of the second rectangle 210B11、dB12And d of the third right triangle 230B31And also arranged in parallel, such arrangement allows the second rectangle 210, the second right triangle 220 and the third right triangle 230 to better fit closely together, thereby allowing the combination into the second optical waveguide array 20, and improving the imaging resolution.
Wherein, two sides of the first rectangle 110 and the second rectangle 210 are d1 and d2, respectively, and d1 and d2 correspond to d1 and d2, respectivelyA11、dA12And dB11、dB12，0.1mm<d1<10mm，0.1mm<d2<10 mm. The size ranges of two side edges of the first rectangle 110 and the second rectangle 210 are respectively set to be 0.1mm-10mm and 0.1mm-10mm, so that the size of a light spot formed by the two beams of light at an image surface can be better smaller than that of an original light beam, and the imaging resolution is improved.
According to an alternative embodiment of the invention, a < 50. That is to say, the projection of the light-passing surface of the first optical waveguide 11 and the light-passing surface of the third optical waveguide 21 on the plane has an overlapping degree, the overlapping degree is less than 50, the range of the overlapping degree is reduced, the size of a light spot formed by the two beams of light at the image surface can be smaller than that of the original light beam, and therefore the imaging resolution is better improved.
Further, a is 25. That is, the projection of the light-passing surface of the first optical waveguide 11 and the light-passing surface of the third optical waveguide 21 on the plane has an overlap degree, which is equal to 25, and the overlap degree is further determined, so that the imaging resolution can be improved to the best effect.
According to an alternative embodiment of the present invention, the side between two adjacent first optical waveguides 11, the side between the first optical waveguides 11 and the second optical waveguide 12, the side between two adjacent third optical waveguides 21, the side between the third optical waveguide 21 and the fourth optical waveguide 22, and the side between the third optical waveguide 21 and the fifth optical waveguide 23 are provided with a reflective layer. The side surfaces between two adjacent first optical waveguides 11 are four, bonding surfaces are arranged between the four side surfaces, the side surfaces between the first optical waveguides 11 and the second optical waveguides 12 are two, the two side surfaces are bonding surfaces, the side surfaces between two adjacent third optical waveguides 21 are four, the four side surfaces are bonding surfaces, the side surfaces between the third optical waveguides 21 and the fourth optical waveguides 22 are two, the two side surfaces are bonding surfaces, one side surface is arranged between the third optical waveguides 21 and the fifth optical waveguides 23, and one side surface is a bonding surface. By arranging the reflecting layer in this way, light can be better reflected when entering the dual-optical waveguide array, so that a desired reflecting effect is achieved.
The reflecting layer is a metal reflecting layer, and the metal reflecting layer is one of an aluminum reflecting layer, a silver reflecting layer and a gold reflecting layer. The reflective layer is set as a metal reflective layer, so that better reflection can be performed, and a desired reflection effect can be achieved.
According to an optional embodiment of the present invention, as shown in fig. 1, the side surfaces of all the optical waveguides are not provided with a reflective layer, a first adhesive 30 is disposed between the side surfaces of the first optical waveguide 11 and the second optical waveguide 12, between the third optical waveguide 21 and the fourth optical waveguide 22, between the third optical waveguide 21 and the fifth optical waveguide 23, and between the first optical waveguide array 10 and the second optical waveguide array 20, and the refractive indexes of the first optical waveguide 11, the second optical waveguide 12, the third optical waveguide 21, the fourth optical waveguide 22, and the fifth optical waveguide 23 are all greater than the refractive index of the first adhesive 30. That is, the reflective layer may not be disposed on the side surfaces of all the optical waveguides, and the first optical waveguide 11 and the second optical waveguide 12 are bonded together by using the first adhesive 30, the third optical waveguide 21 and the fourth optical waveguide 22 are bonded together, the third optical waveguide 21 and the fifth optical waveguide 23 are bonded together, and the first optical waveguide array 10 and the second optical waveguide array 20 are bonded together, so that they can be better closely attached to each other, and thus the imaging resolution can be improved.
The first adhesive 30 is a photosensitive adhesive or a heat-sensitive adhesive. The first adhesive 30 is a photosensitive adhesive or a heat sensitive adhesive, which can better closely adhere the optical waveguide, the first optical waveguide array 10 and the second optical waveguide array 20, which are related to each other, together, so as to improve the imaging resolution, and after the optical waveguide is adhered by the photosensitive adhesive or the heat sensitive adhesive, total reflection can be realized through the difference between the refractive index of the optical waveguide material and the refractive index of the first adhesive 30, and the refractive index of the optical waveguide material is greater than the refractive index of the adhesive.
According to an alternative embodiment of the present invention, as shown in fig. 1, the optical array lens 1 further includes: first glass layer 40 and second glass layer 50, first glass layer 40 sets up in the one side that first optical waveguide array 10 deviates from second optical waveguide array 20, and second glass layer 50 sets up in the one side that second optical waveguide array 20 deviates from first optical waveguide array 10. By disposing the first glass layer 40 and the second glass layer 50 at such positions, two glass windows can be formed, and the optical array lens 1 can be formed.
Further, the side of the first glass layer 40 facing away from the first optical waveguide array 10, and the side of the second glass layer 50 facing away from the second optical waveguide array 20 are provided with antireflection films. That is, an antireflection film is disposed on a side of the first glass layer 40 away from the first optical waveguide array 10, and an antireflection film layer is also disposed on a side of the second glass layer 50 away from the second optical waveguide array 20, so that the transmittance of light can be improved.
Second adhesive glue is arranged between the first glass layer 40 and the first optical waveguide array 10 and between the second glass layer 50 and the second optical waveguide array 20, the second adhesive glue can be used for fixedly bonding the first glass layer 40 and the first optical waveguide array 10, and the second adhesive glue can be used for fixedly bonding the second glass layer 50 and the second optical waveguide array 20. The second adhesive glue can be photosensitive glue or thermosensitive glue.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. An optical array lens, comprising:
a first optical waveguide array comprising: the optical waveguide array comprises a first optical waveguide and a second optical waveguide which are the same in length, wherein the cross section of the first optical waveguide is a first rectangle, the cross section of the second optical waveguide is a first right triangle, a plurality of first optical waveguides are distributed in the first optical waveguide array, and a plurality of second optical waveguides surround the outer side of the first optical waveguide array;
a second optical waveguide array disposed on one side of the first optical waveguide array, the second optical waveguide array comprising: the optical waveguide array comprises a third optical waveguide, a fourth optical waveguide and a fifth optical waveguide which are the same in length, wherein the cross section of the third optical waveguide is a second rectangle, the cross section of the fourth optical waveguide is a second right triangle, the cross section of the fifth optical waveguide is a third right triangle, a plurality of third optical waveguides are distributed in the second optical waveguide array, a plurality of fourth optical waveguides are distributed at the outer edge of the second optical waveguide array, and a plurality of fifth optical waveguides are distributed at the end corners of the second optical waveguide array, wherein,
the projection of the light passing surface of the first optical waveguide and the projection of the light passing surface of the third optical waveguide on a plane have an overlapping degree a, and a is less than 100.
2. The optical array lens of claim 1, wherein the first optical waveguide has a length LA1，LA1Satisfy the relation:
the second optical waveguide has a length LB1，LB1Satisfy the relation:
wherein, thetaA2，θB2Angle of refraction, d, respectively, for selected light raysA11And dA12Respectively the two side dimensions of the cross-section of the first optical waveguide, dB11And dB12Two side dimensions, t, of the cross section of the third optical waveguideAIs a positive integer, tBIs 0 or other positive integer.
3. The optical array lens of claim 1, wherein the length of the third optical waveguide is different from the length of the first optical waveguide, and both sides of the first rectangle are respectively the same as both sides of the second rectangle.
4. The lens array of claim 3, wherein the two sides of the first rectangle are respectively identical to and parallel to the two legs of the first right triangle.
5. The lens array of claim 4, wherein two sides of the second rectangle are respectively disposed in the same and parallel manner as two legs of the second right triangle, and one side of the second rectangle is disposed in the same and parallel manner as a hypotenuse of the third right triangle.
6. The optical array lens of claim 5, wherein two sides of the first rectangle and the second rectangle are d1 and d2, respectively, 0.1mm < d1<10mm, 0.1mm < d2<10 mm.
7. The optical array lens of claim 1, wherein a < 50.
8. The lens array of claim 7, wherein a is 25.
9. The optical array lens of claim 1, wherein a side surface between two adjacent first optical waveguides, a side surface between the first optical waveguide and the second optical waveguide, a side surface between two adjacent third optical waveguides, a side surface between the third optical waveguide and the fourth optical waveguide, and a side surface between the third optical waveguide and the fifth optical waveguide are provided with a reflective layer.
10. The lens array of claim 9, wherein the reflective layer is a metallic reflective layer, the metallic reflective layer being one of an aluminum reflective layer, a silver reflective layer, and a gold reflective layer.
11. The optical array lens of claim 1, wherein no reflective layer is disposed on the side surfaces of all the optical waveguides, first adhesive glue is disposed between the side surfaces of the first optical waveguide and the second optical waveguide, between the third optical waveguide and the fourth optical waveguide, between the third optical waveguide and the fifth optical waveguide, and between the first optical waveguide array and the second optical waveguide array, and refractive indices of the first optical waveguide, the second optical waveguide, the third optical waveguide, the fourth optical waveguide, and the fifth optical waveguide are greater than a refractive index of the first adhesive glue.
12. The optical array lens of claim 11, wherein the first adhesive glue is a photosensitive glue or a thermal glue.
13. The optical array lens of claim 1, further comprising: the first glass layer is arranged on one side, away from the second optical waveguide array, of the first optical waveguide array, and the second glass layer is arranged on one side, away from the first optical waveguide array, of the second optical waveguide array.
14. The lens of claim 13, wherein an antireflection film is disposed on a side of the first glass layer facing away from the first array of optical waveguides and a side of the second glass layer facing away from the second array of optical waveguides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020797413.8U CN212540766U (en) | 2020-05-13 | 2020-05-13 | Optical array lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020797413.8U CN212540766U (en) | 2020-05-13 | 2020-05-13 | Optical array lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212540766U true CN212540766U (en) | 2021-02-12 |
Family
ID=74540444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020797413.8U Active CN212540766U (en) | 2020-05-13 | 2020-05-13 | Optical array lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212540766U (en) |
-
2020
- 2020-05-13 CN CN202020797413.8U patent/CN212540766U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3589716B2 (en) | Liquid crystal projection panel with micro lens array | |
| US6697042B1 (en) | Backlight assembly for collimated illumination | |
| JP6657528B2 (en) | Cubic polarizer | |
| CN102349293B (en) | Display device | |
| JPWO2006009193A1 (en) | Rear projection type screen and rear projection type projection device | |
| JP2001221975A (en) | Optical device | |
| EP4130849A1 (en) | Optical system, assembly method, and virtual reality device | |
| JP2018013758A (en) | Imaging lens | |
| US7852556B2 (en) | Total internal reflection fresnel lens systems, assemblies, and methods | |
| US11960199B2 (en) | Projection screen | |
| CN106054469B (en) | Ultra-thin liquid crystal display | |
| CN110208896B (en) | Novel optical waveguide and screen using same | |
| CN212540766U (en) | Optical array lens | |
| US20060126186A1 (en) | Lenticular lens sheet, rear projection type screen, and rear projection type projector, and lenticular lens sheet producing method | |
| CN209746177U (en) | optical lens | |
| CN111198418B (en) | Optical waveguide unit array and optical lens having the same | |
| US9557526B2 (en) | Freeform imaging lens and freeform imaging system using the same | |
| CN209858773U (en) | Novel optical waveguide and screen applying same | |
| CN116859562A (en) | Optical module and head-mounted display device | |
| JPH10111458A (en) | Reflection type image-formation optical system | |
| WO2022227977A1 (en) | Optical device and optical system | |
| KR20170035006A (en) | Projection lens unit of projector | |
| CN209879049U (en) | Flat lens for imaging | |
| CN211856975U (en) | Optical waveguide unit array and optical lens having the same | |
| JP7047417B2 (en) | Lens sheet unit, image pickup module, image pickup device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |