Optical module and far-image optical equipment

Abstract

The utility model provides an optical module and far-image optical equipment, and relates to the technical field of far-image optics, and the optical module comprises a first printing plate and a second printing plate. A first dotted patterned layer is printed on one side of the first printing plate; a second dotted patterned layer is printed on the side, away from the imaging panel, of the second printing plate. The first dotted patterned layer comprises a first printing area, and the first printing area is provided with a plurality of first spots; the second dotted patterned layer comprises a second printing area, and the second printing area is provided with a plurality of second spots. The first spot can present a light image layer on the front side of the object amplification imaging surface through the light reflection effect, and the focal length of the crystalline lens can be adjusted to focus on the image layer corresponding to the first spot, so that the visual fatigue is relieved; the surface roughness can be increased through the second printing plate, the diffuse reflection imaging quality is guaranteed, and the visual fatigue feeling during watching is relieved; according to the application, the problem that the far-image optical equipment is easy to cause visual fatigue in the use process is relieved from two perspectives.

Description

Technical Field

[0001] This application relates to the field of telephoto optical technology, specifically to an optical module and a telephoto optical device. Background Technology

[0002] A far-image display screen is an optical device based on far-image display technology. Far-image display technology is realized based on optical principles and freeform mirrors, which can turn near-distance images into far-distance virtual images. Far-image display technology allows users to see images that are magnified geometrically when they are a certain distance away from the viewing screen. The image is presented in a way that simulates the viewing distance of real objects, so that the picture presented to the reader has a sense of distance. Far-image display technology helps to reduce eye fatigue caused by prolonged close-range use of the eyes and slows down the rate of myopia development.

[0003] Currently, while telephoto display technology can alleviate eye fatigue to some extent, prolonged screen viewing still leads to visual fatigue as the eye's lens focuses on the image surface of the reading device for extended periods. Telephoto optical devices lack specific components to alleviate this fatigue. Furthermore, the image formed in the human eye is related to the diffuse reflection light from the imaging panel, and the viewing experience depends on the image quality. Poor image quality can exacerbate eye fatigue. Therefore, existing telephoto optical devices require further improvement to reduce user fatigue during viewing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an optical module and a telephoto optical device, which solves the problem of visual fatigue that is easily caused by telephoto optical devices during use.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] In a first aspect, embodiments of this application provide an optical module applied to a telephoto optical device. The optical module includes a first printed circuit board and a second printed circuit board. The first printed circuit board is mounted on the concave side of a freeform mirror of the telephoto optical device, and a first dot-patterned layer is printed on the side of the first printed circuit board facing the freeform mirror. The second printed circuit board is located on the side of the imaging panel of the telephoto optical device, and a second dot-patterned layer is printed on the side of the second printed circuit board away from the imaging panel.

[0007] Specifically, the first dot-patterned layer includes a first printed area and a first unprinted area, the first printed area being located outside the first unprinted area and having a plurality of first dots arranged in an array; the second dot-patterned layer includes a second printed area and a second unprinted area, the second printed area being located outside the second unprinted area and having a plurality of second dots arranged in an array; the first printed plate is stacked with a freeform mirror along a first direction, and the projection of the freeform mirror onto the first printed plate along the first direction is located within the area of ​​the first printed plate.

[0008] According to a first aspect of the embodiments of this application, a plurality of first spots and a plurality of second spots are distributed in a discrete island-like shape in a first printing area and a second printing area, respectively.

[0009] According to a first aspect of the embodiments of this application, both the first spot and the second spot are inks that have been printed and cured. The first spot is a semi-transparent gray dot with a transmittance of 50%-75%, and the second spot is a white dot.

[0010] According to a first aspect of the embodiments of this application, a plurality of first spots are of the same size, and a plurality of second spots have the same size; the plurality of first spots are distributed in a regular hexagonal geometric array in a first printing area, and the plurality of second spots are distributed in a regular hexagonal geometric array in a second printing area.

[0011] According to a first aspect of the embodiments of this application, the first unprinted area and the second unprinted area are respectively located in the central regions of the first dot patterned layer and the second dot patterned layer; both the first unprinted area and the second unprinted area are circular in shape.

[0012] According to a first aspect of the embodiments of this application, the first printing plate is a transparent acrylic plate, the second printing plate is a black magnetic sheet, and at least one of the first and second printing plates has a chamfered corner.

[0013] According to a first aspect of the embodiments of this application, the first printing plate has a width of 307mm × 281mm when unfolded along a second direction and a third direction, the thickness of the first printing plate is 2mm, and the width of the second printing plate is 312mm × 280mm.

[0014] According to a first aspect of the embodiments of this application, a plurality of first spots are distributed at equal intervals, and a plurality of second spots are distributed at equal intervals; the diameters of the first unprinted area and the second unprinted area are 50mm-100mm.

[0015] Secondly, embodiments of this application provide a telephoto optical device, which includes an optical module and a frame module. The optical module is the optical module described in the first aspect. The frame module includes a first frame, a second frame, and a third frame that can be unfolded and folded. The first frame, the second frame, and the third frame are respectively equipped with a freeform surface mirror, a plane mirror, and an imaging panel.

[0016] According to a second aspect of the embodiments of this application, in the unfolded state of the frame module, two adjacent frames of the first frame, the second frame and the third frame are arranged at a 45° angle, and the extension surfaces of the first printed plate and the second printed plate of the optical module intersect perpendicularly in space.

[0017] This application provides an optical module and a telephoto optical device. Compared with the prior art, it has the following advantages:

[0018] This application addresses the problem of visual fatigue during the use of telephoto optical devices. Firstly, a first printed plate is added to one side of a freeform mirror. The area of ​​the first printed plate covers the freeform mirror. A portion of the light reflected by the freeform mirror is projected onto the first printed plate. Multiple first spots are distributed in the first printed area of ​​the first printed plate. These first spots, through light reflection, create a faint image layer on the front of the magnified image surface of the object. By adjusting the focal length of the lens, the image can be focused on the image layer corresponding to the first spots, thus alleviating visual fatigue. Furthermore, by leaving a first unprinted area in the first dot-patterned layer, it is beneficial for the human eye to focus on the magnified image surface of the object. Secondly, this application provides a second printed plate on the side of the imaging panel. The second printed plate, by setting a second dot-patterned layer, increases surface roughness, reduces glare, ensures diffuse reflection imaging quality, achieves an ideal imaging effect, and further alleviates visual fatigue during viewing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the assembly of an optical module on a telephoto optical device according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the first printed circuit board provided in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the second printed circuit board provided in the embodiments of this application.

[0023] Reference numerals: 1. First printed plate; 2. Freeform mirror; 3. First dot patterned layer; 31. First printed area; 32. First unprinted area; 4. Second printed plate; 5. Imaging panel; 6. Second dot patterned layer; 61. Second printed area; 62. Second unprinted area; 7. Frame module; 71. First frame; 72. Second frame; 73. Third frame; 8. Plane mirror; 9. First spot A; 10. Second spot B; 11. Viewing position C; 12. Projected light ray D; Image layer E; 13. Magnified object imaging surface F; 14. First direction X1; 15. Second direction X2; 16. Third direction X3. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0026] This application provides an optical module and a far-image optical device, which solves the problem of visual fatigue that far-image optical devices easily cause during use.

[0027] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0028] A far-image light screen is an optical device based on far-image display technology. Far-image display technology is realized based on optical principles and freeform mirrors, which can turn near-distance images into far-distance virtual images. Far-image display technology allows users to see images that are magnified geometrically when they are a certain distance away from the viewing screen. The way the image is presented is to simulate the viewing distance of real objects so that the picture presented to the reader can have a sense of distance.

[0029] Currently, although far-viewing display technology can alleviate eye fatigue to some extent, prolonged screen viewing still causes visual fatigue as the eye's lens focuses on the image surface of the reading object for extended periods. Far-viewing optical devices lack specific functions to alleviate visual fatigue. Furthermore, the image formed in the human eye is related to the diffuse reflection light of the imaging panel, and the viewing effect depends on the image quality on the imaging panel. Poor image quality can also exacerbate eye fatigue.

[0030] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0031] The following is a description of an optical module and a telephoto optical device provided in the embodiments of this application.

[0032] This application provides an optical module and a telephoto optical device, such as... Figure 1 As shown, the optical module is applied to a telephoto optical device. The optical module includes a first printed circuit board 1 and a second printed circuit board 4. The first printed circuit board 1 is mounted on the concave side of the freeform mirror 2 of the telephoto optical device. A first dot-patterned layer 3 is printed on the side of the first printed circuit board 1 facing the freeform mirror 2. The second printed circuit board 4 is located on the side of the imaging panel 5 of the telephoto optical device. A second dot-patterned layer 6 is printed on the side of the second printed circuit board 4 away from the imaging panel 5.

[0033] Specifically, the first dot patterned layer 3 includes a first printed area 31 and a first unprinted area 32. The first printed area 31 is located outside the first unprinted area 32 and has a plurality of first spots A arranged in an array. The second dot patterned layer 6 includes a second printed area 61 and a second unprinted area 62. The second printed area 61 is located outside the second unprinted area 62 and has a plurality of second spots B arranged in an array. The first printed plate 1 is stacked with the freeform mirror 2 along the first direction X1. The projection of the freeform mirror 2 onto the first printed plate 1 along the first direction X1 is located within the area of ​​the first printed plate 1.

[0034] In the embodiments of this application, it can be understood that, in order to alleviate the problem of visual fatigue that is easily caused during the use of far-image optical devices, a first printing plate 1 is added to one side of the freeform mirror 2. The area of ​​the first printing plate 1 can cover the freeform mirror 2. Part of the light reflected by the freeform mirror 2 is projected onto the first printing plate 1. The first printing area 31 of the first printing plate 1 has a plurality of first spots A. The first spots A can present a faint image layer E in front of the magnified imaging surface F of the object through the light reflection effect. By adjusting the focal length of the lens, it can be focused on the image layer E corresponding to the first spot A, thereby alleviating visual fatigue.

[0035] Furthermore, by leaving a first unprinted area 32 in the first dot-patterned layer 3, it is beneficial for the human eye to focus on the magnified imaging surface F of the object. In addition, this application provides a second printed plate 4 on the side of the imaging panel 5. The second printed plate 4, by providing a second dot-patterned layer 6, can increase surface roughness, ensure the imaging quality of diffuse reflection, reduce glare, achieve an ideal imaging effect, and thus alleviate visual fatigue during viewing. This application solves the problem of visual fatigue easily caused by far-image optical devices from two perspectives.

[0036] In some embodiments, please refer to Figure 2 and Figure 3 Multiple first spots A and multiple second spots B are distributed in discrete island-like shapes in the first printing area 31 and the second printing area 61, respectively.

[0037] In the embodiments of this application, it can be understood that, on the one hand, the multiple first spots A are distributed in an island-like shape in the first printing area 31, that is, the multiple first spots A are isolated and scattered in the area corresponding to the first printing area 31, and the multiple first spots A do not fill the area of ​​the first printing area 31. Therefore, the light reflected by the freeform mirror 2 partially passes through the first spots A and forms the image layer E.

[0038] On the other hand, multiple second spots B are isolated and scattered within the area corresponding to the second printing area 61, making the surface of the second printing area 61 exhibit a slightly uneven surface. These uneven surfaces cause the incident projected light rays D to reflect in different directions at different points, thereby forming high-quality diffuse reflection.

[0039] In some embodiments, the first spot A and the second spot B are both printed and cured inks. The first spot A is a semi-transparent gray dot with a transmittance of 50%-75%, and the second spot B is a white dot. It is understood that by setting the first spot A as a gray dot, the faint spots in the corresponding image layer E also appear circular. When the viewer adjusts the focus at viewing position C to focus on image layer E, the circular, faint image provides higher visual comfort.

[0040] In one example, please refer to Figure 2 and Figure 3 Multiple first spots A of varying sizes are randomly and scattered in the first printing area 31, and multiple second spots B of varying sizes are randomly and scattered in the second printing area 61.

[0041] In another example, multiple first spots A are of the same size, and multiple second spots B have the same size; the multiple first spots A are distributed in a regular hexagonal geometric array in the first printing area 31, and the multiple second spots B are distributed in a regular hexagonal geometric array in the second printing area 61.

[0042] In some embodiments, please refer to Figure 2 and Figure 3 The first unprinted area 32 and the second unprinted area 62 are located in the central regions of the first dot patterned layer 3 and the second dot patterned layer 6, respectively; both the first unprinted area 32 and the second unprinted area 62 are circular in shape.

[0043] In some embodiments, the first printing plate 1 is a transparent acrylic plate, the second printing plate 4 is a black magnetic sheet, and at least one of the first printing plate 1 and the second printing plate 4 has a chamfered corner.

[0044] In the embodiments of this application, it can be understood that the acrylic sheet is polymerized from methyl methacrylate monomers and is a kind of specially treated organic glass; the acrylic sheet has excellent transparency, with a light transmittance of over 92%, which can effectively highlight details to improve the visual effect.

[0045] It should be noted that, Figure 3 To clearly illustrate the positions of the second printed area 61, the second unprinted area 62, and the second spot B, the second printing plate 4 is drawn with a white background and the second spot B is drawn with gray. In reality, the second printing plate 4 is set with a black background and the second spot B is white.

[0046] In one example, the first printing plate 1 is unfolded along the second direction X2 and the third direction X3 and has a size of 307mm × 281mm. The thickness of the first printing plate 1 is 2mm, and the size of the second printing plate 4 is 312mm × 280mm.

[0047] It is understandable that the size of the first printed plate 1 corresponds to that of the freeform mirror 2, and the size of the second printed plate 4 corresponds to that of the imaging panel 5. In actual product manufacturing, the size of the first printed plate 1 and the second printed plate 4 can be adjusted according to the actual size requirements of the far-image optical equipment.

[0048] In some embodiments, a plurality of first spots A are equidistantly distributed, and a plurality of second spots B are equidistantly distributed; the diameters of the first unprinted area 32 and the second unprinted area 62 are 50mm-100mm. For example, the diameters of the first unprinted area 32 and the second unprinted area 62 can be approximately 80mm.

[0049] In some embodiments, this application also provides a telephoto optical device, which includes an optical module and a frame module 7. The optical module is the optical module of the first aspect mentioned above. The frame module 7 includes a first frame 71, a second frame 72 and a third frame 73 that can be unfolded and folded. The first frame 71, the second frame 72 and the third frame 73 are respectively equipped with a freeform surface mirror 2, a plane mirror 8 and an imaging panel 5.

[0050] In some embodiments, when the frame module 7 is in the unfolded state, two adjacent frames 71, 72 and 73 are arranged at a 45° angle, and the extension surfaces of the first printed plate 1 and the second printed plate 4 of the optical module intersect perpendicularly in space.

[0051] It should be noted that, in the telephoto optical device provided in this embodiment, when the frame module 7 is in the unfolded state, the object to be magnified is placed on the lower side of the second frame 72, and the object corresponds to... Figure 1 The origin of the projected ray D is the point on which this far-image optical device can magnify an object by 14.25 to 42.75 times on the object magnification imaging plane F.

[0052] In this embodiment, it is understood that the first printed plate 1 is mounted in front of the freeform mirror 2 of the telephoto optical device. The freeform mirror 2 is a reflector that reflects the first spot A printed on the first printed plate 1 to form an image layer E. Since there is a certain distance between the first printed plate 1 and the freeform mirror 2, there will be a certain distance between the image of the first spot A and the image of the reading material placed under the second frame 72, that is, the image layer E and the magnified image surface F of the object are spaced apart.

[0053] It should be noted that image layer E is located above the magnified image plane F of the object, meaning that image layer E is closer to the viewing position C than the magnified image plane F. Image layer E is a very faint image. When the human eye is focused on the magnified image plane F, it will ignore image layer E; the image of image layer E can only be seen when the human eye is focused on image layer E.

[0054] When users read for extended periods using telephoto optical devices, they can adjust the lens of their eye and prevent myopia by actively switching between viewing the image layer E and the magnified image plane F.

[0055] It should also be noted that the human eye can see the entirety of an object primarily because of the image formed by diffusely reflected light within the eye. If the eye only received light reflected unidirectionally from the object's surface, not only would the object's appearance be unclear, but glare interference in a certain direction would also occur. When a set of incident light rays strikes the rough surface of the second printing plate 4, the rough surface reflects the light in all directions, causing the reflected light rays to reflect irregularly in different directions. Each ray of diffuse reflection follows the law of reflection, thus ensuring the image quality of diffuse reflection, achieving the ideal imaging effect, and reducing visual fatigue during viewing.

[0056] In summary, compared with the prior art, this application has the following beneficial effects:

[0057] 1. In this application, a first printing plate 1 is added to one side of the freeform mirror 2. The area of ​​the first printing plate 1 can cover the freeform mirror 2. Part of the light reflected by the freeform mirror 2 is projected onto the first printing plate 1. The first printing area 31 of the first printing plate 1 has a plurality of first spots A. The first spots A can present a faint image layer E in front of the magnified imaging surface F of the object through the reflection of light. By adjusting the focal length of the lens, it can be focused on the image layer E corresponding to the first spot A, thereby relieving visual fatigue.

[0058] 2. In this application, a second printed plate 4 is provided on the side of the imaging panel 5. The second printed plate 4 can increase the surface roughness by setting a second dot patterned layer 6, which can ensure the imaging quality of diffuse reflection and achieve the ideal imaging effect, thereby relieving visual fatigue when viewing. In addition, a first unprinted area 32 is left in the first dot patterned layer 3, which makes it easier for the human eye to focus on the magnified imaging surface F of the object and improve the viewing comfort.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical module, characterized by comprising: The optical module, used in telephoto optical devices, includes: A first printed circuit board (1) is mounted on the concave side of the freeform mirror (2) of the telephoto optical device. A first dot-patterned layer (3) is printed on the side of the first printed circuit board (1) facing the freeform mirror (2). The second printing plate (4) is located on the side of the imaging panel (5) of the far-image optical device. The second printing plate (4) has a second dot patterned layer (6) printed on the side away from the imaging panel (5). The first dot patterned layer (3) includes a first printed area (31) and a first unprinted area (32). The first printed area (31) is located outside the first unprinted area (32) and has a plurality of first dots (A) arranged in an array. The second dot patterned layer (6) includes a second printed area (61) and a second unprinted area (62). The second printed area (61) is located outside the second unprinted area (62) and has a plurality of second dots (B) arranged in an array. The first printing plate (1) is stacked with the freeform mirror (2) along the first direction, and the projection of the freeform mirror (2) onto the first printing plate (1) along the first direction is located within the area of ​​the first printing plate (1).

2. The optical module of claim 1, wherein, Multiple first spots (A) and multiple second spots (B) are distributed in discrete island-like shapes in the first printing area (31) and the second printing area (61), respectively.

3. The optical module as described in claim 2, characterized in that, The first spot (A) and the second spot (B) are both inks after printing and curing. The first spot (A) is a semi-transparent gray dot with a transmittance of 50%-75%. The second spot (B) is a white dot.

4. The optical module of claim 3, wherein the optical module is configured to be mounted on a circuit board. The first spots (A) are of the same size, and the second spots (B) have the same size; the first spots (A) are distributed in a regular hexagonal geometric array in the first printing area (31), and the second spots (B) are distributed in a regular hexagonal geometric array in the second printing area (61).

5. The optical module according to any one of claims 1 to 4, wherein The first unprinted area (32) and the second unprinted area (62) are located in the central regions of the first dot patterned layer (3) and the second dot patterned layer (6), respectively; the first unprinted area (32) and the second unprinted area (62) are both circular in shape.

6. The optical module according to any one of claims 1 to 4, wherein The first printing plate (1) is a transparent acrylic plate, and the second printing plate (4) is a black magnetic sheet. At least one of the first printing plate (1) and the second printing plate (4) has a chamfered corner.

7. The optical module of claim 6, wherein the optical module is configured to be mounted on a circuit board. The first printing plate (1) has a width of 307mm×281mm when unfolded along the second direction and the third direction, the thickness of the first printing plate (1) is 2mm, and the width of the second printing plate (4) is 312mm×280mm.

8. The optical module according to any one of claims 1 to 4, wherein Multiple first spots (A) are distributed at equal intervals, and multiple second spots (B) are distributed at equal intervals; the diameters of the first unprinted area (32) and the second unprinted area (62) are 50mm-100mm.

9. A telecentric optical device, characterized by, include: The optical module is the optical module according to any one of claims 1-8; and The frame module (7) includes an unfoldable and foldable first frame (71), a second frame (72) and a third frame (73), wherein the first frame (71), the second frame (72) and the third frame (73) are respectively equipped with a freeform surface mirror (2), a plane mirror (8) and an imaging panel (5).

10. The telephoto optical device as described in claim 9, characterized in that, In the unfolded state of the frame module (7), the two adjacent frames (71), the second frame (72) and the third frame (73) are set at a 45° angle, and the extension surfaces of the first printed plate (1) and the second printed plate (4) of the optical module intersect perpendicularly in space.

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