Printed optical element, printing method and telescopic optical instrument

Abstract

The present application provides a printed optical element, a printing method, and a telescopic optical instrument, relating to the field of telescopic optical technology. The printed optical element includes a substrate and a patterned layer. The substrate is transparent and has a printing area on its first side. The patterned layer is located in the printing area and includes multiple functional parts protruding from the surface of the substrate. The multiple functional parts are formed by UV printing and arranged in a geometric array. The functional parts are translucent and have a continuous columnar shape. The functional parts are reflected by a free-form mirror and imaged onto an imaging panel of a telescopic optical instrument, presenting a first imaging plane. The first imaging plane is spaced apart from a second imaging plane that the telescopic optical instrument presents when magnifying an object. While viewing the magnified information on the second imaging plane, the user can actively adjust the focal length to switch the focus between the first imaging plane and the second imaging plane, thereby alleviating eye fatigue and achieving the effect of adjusting the eye lens to prevent and control myopia.

Description

Technical Field

[0001] The present application relates to the field of telescopic optical technology, and in particular to a printed optical element, a printing method and a telescopic optical instrument. Background Art

[0002] Telescopic display technology allows users to see geometrically magnified images at a certain distance from the viewing screen. The image is presented by simulating the visible distance of real objects so that the reading image has a sense of distance. Telescopic display technology helps reduce visual fatigue caused by long-term close-range eye use and protects eyesight. It can change "near" vision into "far" vision and reduce the rate of development of myopia.

[0003] Although telescopic display technology can alleviate eye fatigue during viewing to a certain extent, when viewing the screen of a telescopic optical instrument for a long time, the lens of the eye is concentrated on the imaging surface corresponding to the reading body for a long time, which still causes visual fatigue. Current telescopic optical instruments lack the corresponding visual fatigue relief function. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present application provides a printed optical element, a printing method, and a telescopic optical instrument, which solve the problem that telescopic optical instruments are prone to visual fatigue during long-term use.

[0005] To achieve the above objectives, this application is implemented through the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a printed optical element, which is applied to a telescopic optical instrument and is stacked with a free-form surface mirror of the telescopic optical instrument, and the projection of the free-form surface mirror on the printed optical element along a first direction is located within the format of the printed optical element; the printed optical element includes a substrate and a patterned layer.

[0007] Specifically, the substrate is transparent and has a printing area on the first side; the patterned layer is located in the printing area and includes a plurality of functional parts protruding from the surface of the substrate, and the plurality of functional parts are formed by UV printing and distributed in a geometric array; wherein the functional parts are translucent and have a continuous columnar shape, and the functional parts are adjacent to the concave surface of the free-form surface mirror along a first direction and are arranged at intervals; the functional parts are imaged by reflection from the free-form surface mirror to an imaging panel of a telescopic optical instrument and present a first imaging plane; the first imaging plane and a second imaging plane presented by the telescopic optical instrument for magnifying an object are distributed at intervals; a first distance between the human eye lens and the first imaging plane is less than a second distance from the second imaging plane, and the focus of the first imaging plane and the second imaging plane can be switched by adjusting the focal length.

[0008] According to the first aspect of the embodiment of the present application, the substrate is an acrylic plate with a rectangular format, and multiple functional parts are distributed in the printing area in a discrete island form. The functional parts are translucent gray dots and the transmittance range is: 50%-75%.

[0009] According to the first aspect of the embodiment of the present application, the functional parts are evenly distributed in the format corresponding to the printing area, the 2i-th row of functional parts and the 2i-1-th row of functional parts are staggered in the format corresponding to the printing area, and the spacing arrangement direction of the two is consistent; wherein i is a positive integer.

[0010] According to a first aspect of the embodiment of the present application, the printing area is fully distributed on the first side of the substrate, and the number of functional parts distributed in the printing area array ranges from 98,000 to 100,000; the functional parts are cured ink.

[0011] According to the first aspect of the embodiment of the present application, the substrate also includes a blank area, and the printing area is surrounded on the outside of the blank area. The blank area is a regular circle and the corresponding diameter range is: 60mm-100mm; the number of functional parts distributed in the array of the printing area ranges from: 92000 to 94000, and the functional part is solidified ink.

[0012] According to a first aspect of the embodiment of the present application, an anti-reflection film is attached to the second side of the substrate away from the patterned layer. The anti-reflection film is fully distributed on the second side of the substrate to reduce stray light reflected to the printed optical element.

[0013] According to a first aspect of the embodiment of the present application, the functional portion has a preset target thickness to protrude from the outer contour of the substrate, and any cross section of the functional portion perpendicular to the first direction is circular and has a diameter range of 0.3 mm to 0.7 mm.

[0014] In a second aspect, an embodiment of the present application provides a printing method, which includes: obtaining a substrate that meets preset printing conditions, the preset printing conditions are used to control the flatness, cleanliness, haze and reflectivity of the substrate; printing a patterned layer on the first side of the substrate by a digital printer to obtain a first printed plate having multiple functional parts; bonding an anti-reflection film to the second side of the substrate of the first printed plate to obtain a second printed plate; wherein the anti-reflection film is fully distributed on the second side of the substrate; testing the transmittance of the functional part corresponding to the position of the second printed plate to determine whether the second printed plate meets the preset standard application conditions; wherein the transmittance range under the standard application conditions is 50%-75%; if the second printed plate meets the standard application conditions, confirming that the second printed plate is qualified; if the second printed plate does not meet the standard application conditions, removing the patterned layer of the second printed plate and reprinting it using a digital printer.

[0015] According to the second aspect of the embodiment of the present application, the digital printer has a positioning system, which is used to monitor the position of the substrate during the printing process; before the patterned layer is printed on the first side of the substrate by the digital printer to obtain the first printed plate having multiple functional parts, the printing method also includes: verifying whether the edge of the outer peripheral surface of the substrate is in a preset target position, and the target position is used to calibrate the position information of the functional part to be printed on the substrate.

[0016] The aforementioned method of printing a patterned layer on the first side of a substrate by a digital printer to obtain a first printed plate having multiple functional parts includes the following steps: continuously monitoring the real-time position of the peripheral edge of the substrate during the UV printing process by a positioning system, and calculating the deviation between the real-time position and the target position; in the event of a deviation, determining whether the deviation exceeds a predetermined deviation tolerance range, and interrupting the printing operation of the digital printer when the deviation exceeds the deviation tolerance range, and correcting the position of the substrate.

[0017] In a third aspect, an embodiment of the present application provides a telescopic optical instrument, which includes a printed optical element, a frame module and an optical module; the printed optical element is the printed optical element of the first aspect mentioned above; the frame module includes a first frame body, a second frame body and a third frame body that can be folded and unfolded; the optical module includes a free-form surface mirror, a plane mirror and an imaging panel, and the free-form surface mirror, the plane mirror and the imaging panel are respectively assembled on the first frame body, the second frame body and the third frame body; wherein, the printed optical element is assembled on the side of the free-form surface mirror facing the second frame body, and when the frame module is in the unfolded state, the printed optical element is in a standard usage state to extend along the second direction and the third direction.

[0018] This application provides a printed optical element, a printing method, and a telescopic optical instrument. Compared with the prior art, the present invention has the following advantages:

[0019] The present application sets a printed optical element on one side of the free-form surface mirror of the telescopic optical instrument, and the free-form surface mirror is used for reflecting light. Part of the light reflected by the free-form surface mirror is projected onto the functional part of the patterned layer in the printed optical element. The functional part is semi-transparent. With the cooperation of various elements of the telescopic optical instrument, the functional part is imaged onto the imaging panel of the telescopic optical instrument through the reflection of light and presents a first imaging surface; in addition, the telescopic optical instrument also magnifies the object by projecting light and obtains a second imaging surface; due to a certain distance between the free-form surface mirror and the printed optical element, the first imaging surface presented by the reflection and diffuse reflection of light is closer to the user's lens than the second imaging surface; while viewing the magnified information on the second imaging surface, the user can actively adjust the focal length to switch the focus between the first imaging surface and the second imaging surface, thereby alleviating eye fatigue and achieving the effect of adjusting the lens of the eye to prevent and control myopia. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the imaging principle of a printed optical element provided in an embodiment of the present application for a telescopic optical instrument;

[0022] Figure 2 is a front view of a printed optical element provided in an embodiment of the present application;

[0023] Figure 3 is a front view of another printed optical element provided in an embodiment of the present application;

[0024] Figure 4 yes Figure 3 Enlarged schematic diagram of point C in the middle;

[0025] Figure 5 It is a partial cross-sectional view of a printed optical element provided in an embodiment of the present application.

[0026] Figure numerals: free-form surface mirror 1; substrate 2; patterned layer 3; functional part 4; imaging panel 5; anti-reflection film 6; frame module 7; first frame body 71; second frame body 72; third frame body 73; plane mirror 8; printing area A; blank area B; first imaging surface a; second imaging surface b; projected light c; viewing position d; first direction X1; second direction X2; third direction X3. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0029] The embodiments of the present application provide a printed optical element, a printing method, and a telescopic optical instrument, thereby solving the problem that telescopic optical instruments are prone to visual fatigue during long-term use.

[0030] The technical solution in the embodiments of the present application is to solve the above technical problems, and the overall idea is as follows:

[0031] Telescopic display technology allows users to see geometrically magnified images at a certain distance from the viewing screen. The image is presented by simulating the visible distance of real objects so that the reading image has a sense of distance. Telescopic display technology helps reduce visual fatigue caused by long-term close-range eye use and protects eyesight. It can change "near" vision into "far" vision and reduce the rate of development of myopia.

[0032] Although telescopic display technology can alleviate eye fatigue during viewing to a certain extent, prolonged viewing of the screen will cause the eye's lens to focus on the imaging surface of the reading object for a long time, which will still lead to visual fatigue. Current telescopic optical instruments lack the corresponding visual fatigue relief function.

[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] The following first introduces a printed optical element provided in an embodiment of the present application.

[0035] The embodiment of the present application provides a printed optical element, such as Figure 1 and Figure 5 As shown, the printed optical element is applied to a telescopic optical instrument and is stacked with a free-form mirror 1 of the telescopic optical instrument. The projection of the free-form mirror 1 on the printed optical element along the first direction X1 is located within the format of the printed optical element. The printed optical element includes a substrate 2 and a patterned layer 3.

[0036] For details, please refer to Figure 2 、 Figure 4 and Figure 5 The substrate 2 is transparent and has a printing area A on the first side; the patterned layer 3 is located in the printing area A and includes a plurality of functional parts 4 protruding from the surface of the substrate 2. The plurality of functional parts 4 are formed by UV printing and distributed in a geometric array.

[0037] Please also refer to Figure 1 and Figure 5 The functional portion 4 is translucent and continuous in columnar form. The functional portion 4 is adjacent to the concave surface of the free-form mirror 1 along the first direction X1 and is spaced apart. The functional portion 4 is reflected by the free-form mirror 1 and is imaged to the imaging panel 5 of the telescopic optical instrument and presents a first imaging surface a. The first imaging surface a is spaced apart from the second imaging surface b presented by the telescopic optical instrument when magnifying the object. The first distance between the human eye lens and the first imaging surface a is less than the second distance from the second imaging surface b, and the focus of the first imaging surface a and the second imaging surface b can be switched by adjusting the focal length. It can be understood that the viewer's human eye lens corresponds to Figure 1 The viewing position d in .

[0038] In the embodiments of this application, it is understood that UV printing is a printing process that uses ultraviolet light to dry and cure ink. UV printing uses ink containing a photosensitizer. Under the ultraviolet light emitted by a UV curing lamp, the photosensitizer in the ink rapidly undergoes a photochemical reaction, causing the ink to instantly solidify from a liquid state.

[0039] In the present application, a printed optical element is arranged on one side of a free-form mirror 1 of a telescopic optical instrument. The free-form mirror 1 is used to project the reflection of the light c. Part of the light reflected by the free-form mirror 1 is projected onto the functional part 4 of the patterned layer 3 in the printed optical element. The functional part 4 is translucent. With the cooperation of various components of the telescopic optical instrument, the functional part 4 is imaged onto the imaging panel 5 of the telescopic optical instrument through the reflection of the light and presents a first imaging surface a.

[0040] It should be noted that the telescopic optical instrument can also magnify the object and obtain a second imaging surface b by projecting light; since there is a certain distance between the free-form mirror 1 and the printed optical element, the first imaging surface a presented by light reflection and diffuse reflection is closer to the user's lens than the second imaging surface b; while the user is viewing the magnified information on the second imaging surface b, he can actively adjust the focal length to switch the focus between the first imaging surface a and the second imaging surface b, and then adjust the lens of the eye to relieve eye fatigue, thereby achieving the effect of preventing and controlling myopia.

[0041] It should also be noted that the functional parts 4 are distributed in a geometric array and constitute a patterned layer 3. The functional parts 4 are arranged at intervals in the printing area A of the substrate 2. The functional parts 4 are arranged to be translucent and the corresponding first imaging surface a will present a faint image. When the human eye focuses on the second imaging surface b behind the first imaging surface a, the first imaging surface a will not affect the clarity of the second imaging surface b viewed by the human eye.

[0042] It should be emphasized that the printed optical element is a separate accessory, which is used in combination with a telescopic optical instrument to solve the problem of visual fatigue that is easily caused by long-term use of the telescopic optical instrument. The printed optical element can be clipped onto the front side of the reflector of the telescopic optical instrument, and can also be fixed with adhesive objects.

[0043] In some embodiments, please refer to Figure 2 and Figure 4 The substrate 2 is an acrylic plate with a rectangular format. Multiple functional parts 4 are distributed in the printing area A in a discrete island shape. The functional parts 4 are translucent gray dots with a transmittance range of 50%-75%.

[0044] In the embodiment of the present application, it can be understood that the format shape of the substrate 2 matches the shape of the free-form mirror 1; please refer to Figure 2-Figure 5 , multiple functional parts 4 are distributed in the printing area A in an island-like form, that is, multiple functional parts 4 are spaced and isolated and scattered within the format corresponding to the printing area A, and the patterned layer 3 corresponding to the multiple functional parts 4 does not occupy the entire format of the printing area A. Therefore, part of the light reflected by the free-form mirror 1 passes through the functional part 4, and the other part directly passes through the substrate 2.

[0045] In addition, acrylic sheet is made of methyl methacrylate monomer and is a specially treated organic glass. Acrylic sheet has excellent transparency and light transmittance can reach more than 92%. The light transmittance of acrylic sheet is higher than that of ordinary glass, which is conducive to better highlighting details to enhance visual effects.

[0046] In some embodiments, please refer to Figure 2 and Figure 4 , the functional parts 4 are evenly distributed in the width corresponding to the printing area A, the 2i-th row functional parts 4 and the 2i-1-th row functional parts 4 are staggered in the width corresponding to the printing area A, and the spacing arrangement direction of the two is consistent; wherein i is a positive integer.

[0047] In the embodiment of the present application, it can be understood that the 2i-th row functional portion 4 and the 2i-1-th row functional portion 4 correspond to the even-numbered row functional portion 4 and the odd-numbered row functional portion 4 in the printing area A, respectively. Figure 4 As shown, a plurality of functional parts 4 can form a combination in a regular hexagonal array, and the functional parts 4 are in a regular hexagonal geometric array on the substrate 2 .

[0048] In an example, please refer to Figure 2 and Figure 5 The printing area A is fully distributed on the first side of the substrate 2. The number of functional parts 4 arranged in an array in the printing area A ranges from 98,000 to 100,000. The functional parts 4 are solidified ink. For example, the printing area A can be fully distributed with 98,971 functional parts 4.

[0049] In another example, please refer to Figure 3 and Figure 5 The substrate 2 also includes a blank area B. The printing area A is disposed outside of the blank area B. The blank area B is a regular circle with a diameter ranging from 60 mm to 100 mm. The number of functional components 4 arranged in an array within the printing area A ranges from 92,000 to 94,000. The functional components 4 are solidified ink. For example, the printing area A can be partially arranged with 93,161 functional components 4. The diameter of the blank area B can be set to approximately 80 mm.

[0050] It can be understood that a blank area B is left at the center of the substrate 2, and the functional part 4 is not printed in the blank area B. Compared with the method of covering the entire substrate 2 with functional parts 4, setting the blank area B is more conducive to the human eye focusing on the second imaging surface b.

[0051] In some embodiments, as Figure 5 As shown, an anti-reflection film 6 is attached to the second side of the substrate 2 away from the patterned layer 3 . The anti-reflection film 6 is fully covered on the second side of the substrate 2 to reduce stray light reflected to the printed optical element.

[0052] In the embodiments of the present application, it is understood that the anti-reflection film 6 utilizes the interference phenomenon of light. By precisely controlling the thickness and refractive index of the film layers, the film partially cancels out reflected light waves, thereby reducing stray light reflections. The anti-reflection film 6 is formed by alternating layers of materials with different refractive indices, each layer approximately one-quarter wavelength thick. The anti-reflection film 6 effectively reduces light reflections, allowing more light to pass through, improving the transmittance of the substrate 2, reducing glare caused by reflections, and enhancing visual comfort and contrast.

[0053] In some embodiments, please refer to Figure 4 and Figure 5 The functional portion 4 has a preset target thickness to protrude from the outer contour of the substrate 2 , and any cross section of the functional portion 4 perpendicular to the first direction X1 is circular and has a diameter range of 0.3 mm to 0.7 mm.

[0054] In one example, the diameter of the circular cross-section of each functional portion 4 can be 0.5 mm, and the center distance between the circular cross-sections of two adjacent functional portions 4 is set to 1 mm.

[0055] In another example, the ratio between the target thickness corresponding to the functional part 4 and the thickness of the substrate 2 is greater than one tenth. It can be understood that the target thickness corresponding to the functional part 4 is related to the image depth corresponding to the first imaging surface a. By adjusting the target thickness corresponding to the functional part 4, the image depth on the first imaging surface a can be adjusted, so that the human eye can be in a comfortable state in the process of switching the focus of the first imaging surface a and the second imaging surface b by adjusting the focal length, and the clarity when viewing the second imaging surface b can be guaranteed.

[0056] In some embodiments, the present application provides a printing method, which may include the following steps:

[0057] S110 , obtaining a substrate 2 that meets preset printing conditions, where the preset printing conditions are used to control the flatness, cleanliness, haze, and reflectivity of the substrate 2 .

[0058] S120 , printing a patterned layer 3 on a first side of the substrate 2 by a digital printer to obtain a first printed plate having a plurality of functional parts 4 .

[0059] S130 , bonding an anti-reflection film 6 to the second side of the substrate 2 of the first printed board to obtain a second printed board; wherein the anti-reflection film 6 is completely distributed on the second side of the substrate 2 .

[0060] S140 , testing the transmittance of the corresponding position of the functional portion 4 of the second printed board to determine whether the second printed board meets the preset standard application conditions; wherein the transmittance range under the standard application conditions is 50%-75%.

[0061] S150 : If the second printed board meets the standard application conditions, confirm that the second printed board is qualified.

[0062] S160 : If the second printing plate does not meet the standard application conditions, remove the patterned layer 3 of the second printing plate and reprint using a digital printer.

[0063] In some embodiments, the digital printer has a positioning system for monitoring the position of the substrate 2 during the printing process.

[0064] Before printing the patterned layer 3 on the first side of the substrate 2 by the digital printer to obtain the first printed plate having multiple functional parts 4, that is, before the aforementioned S120, the printing method also includes: S111, verifying whether the edge of the outer peripheral surface of the substrate 2 is at a preset target position, and the target position is used to calibrate the position information of the functional part 4 to be printed on the substrate 2.

[0065] In some embodiments, the patterned layer 3 is printed on the first side of the substrate 2 by a digital printer to obtain a first printed plate having a plurality of functional parts 4. That is, the aforementioned S120 may specifically include the following steps:

[0066] S210 , continuously monitoring the real-time position of the peripheral edge of the substrate 2 during the UV printing process through the positioning system, and calculating the deviation between the real-time position and the target position.

[0067] S220 , in the case of a deviation, determining whether the deviation exceeds a predetermined deviation tolerance range, and interrupting the printing operation of the digital printer when the deviation exceeds the deviation tolerance range, and correcting the position of the substrate 2 .

[0068] In some embodiments, the present application provides a telescopic optical instrument, please refer to Figure 1 The telescopic optical instrument includes a printed optical element, a frame module 7 and an optical module; the printed optical element is the printed optical element in the aforementioned embodiment; the frame module 7 includes a foldable first frame 71, a second frame 72 and a third frame 73.

[0069] Specifically, the optical module includes a free-form surface mirror 1, a plane mirror 8 and an imaging panel 5, which are respectively assembled on a first frame 71, a second frame 72 and a third frame 73; wherein, the printed optical element is assembled on the side of the free-form surface mirror 1 facing the second frame 72, and when the frame module 7 is in the unfolded state, the printed optical element is in a standard usage state to extend along the second direction X2 and the third direction X3.

[0070] It should be noted that, when the frame module 7 is in the unfolded state, the telescopic optical instrument provided in the embodiment of the present application places the object to be magnified on the lower side of the second frame 72. Figure 1 The starting point of the projected light c is the telescopic optical instrument, which can magnify the object on the second imaging plane b by 14.25 times to 42.75 times.

[0071] In the embodiments of the present application, it is understood that the printed optical element is mounted in front of the free-form mirror 1 of the telescopic optical instrument. The free-form mirror 1 is a reflector that reflects the UV-printed functional portion 4 on the printed optical element and forms an image on the imaging panel 5. Due to the distance between the printed optical element and the free-form mirror 1, there is a certain distance between the image of the functional portion 4 and the image of the reading material placed on the lower side of the second frame 72, that is, the first imaging surface a and the second imaging surface b are spaced apart.

[0072] Furthermore, the first imaging surface a is located above the second imaging surface b, meaning it is closer to the human eye than the second imaging surface b. The UV-printed functional portion 4 on the printed optical element is transparent, resulting in a faint image during imaging. When the human eye focuses on the second imaging surface b corresponding to the reading volume, the first imaging surface a corresponding to the UV-printed functional portion 4 on the printed optical element is invisible. The image of the functional portion 4 can only be seen when the focus is on the first imaging surface a.

[0073] When a user uses a telescopic optical instrument for reading for a long time, by actively switching the viewing between the first imaging plane a and the second imaging plane b, the user can adjust the lens of the eye and prevent and control myopia.

[0074] In summary, compared with the prior art, this application has the following beneficial effects:

[0075] 1. The present application sets a printed optical element on one side of a free-form mirror 1 of a telescopic optical instrument. Part of the light reflected by the free-form mirror 1 is projected onto the functional portion 4 of the patterned layer 3 in the printed optical element. The functional portion 4 is imaged onto the imaging panel 5 of the telescopic optical instrument through the reflection of the light and presents a first imaging surface a. The first imaging surface a is spaced apart from the second imaging surface b presented after the object is magnified. The user can actively adjust the focal length to switch the focus between the first imaging surface a and the second imaging surface b, thereby adjusting the lens of the eye to relieve eye fatigue.

[0076] 2. The functional portion 4 is arranged at intervals in the printed area A of the substrate 2. The functional portion 4 is translucent and the corresponding first imaging surface a will present a faint image. When the human eye focuses on the second imaging surface b behind the first imaging surface a, the first imaging surface a will not affect the clarity of the second imaging surface b viewed by the human eye.

[0077] 3. The present application may leave a blank area B of a certain range in the center of the substrate 2. The functional part 4 is not printed in the blank area B. Compared with the method of covering the entire substrate 2 with the functional part 4, setting the blank area B is conducive to the human eye focusing on the second imaging surface b, thereby ensuring the viewing experience.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A telescopic optical instrument, characterized in that: include: printed optical components; A frame module (7) comprising a foldable and unfoldable first frame body (71), a second frame body (72), and a third frame body (73); and An optical module comprising a free-form mirror (1), a plane mirror (8), and an imaging panel (5), wherein the free-form mirror (1), the plane mirror (8), and the imaging panel (5) are respectively assembled on the first frame (71), the second frame (72), and the third frame (73); The printed optical element is mounted on a side of the free-form mirror (1) facing the second frame (72), and when the frame module (7) is in an unfolded state, the printed optical element is in a standard use state to extend along the second direction and the third direction; The printed optical element and the free-form surface mirror (1) of the telescopic optical instrument are stacked, and the projection of the free-form surface mirror (1) on the printed optical element along a first direction is located within the format of the printed optical element; The printed optical element comprises a substrate (2) and a patterned layer (3); The substrate (2) is transparent and has a printing area (A) on the first side; The patterned layer (3) is located in the printing area (A) and comprises a plurality of functional parts (4) protruding from the surface of the substrate (2), wherein the plurality of functional parts (4) are formed by UV printing and are distributed in a geometric array; The functional portion (4) is translucent and has a continuous columnar shape, and the functional portion (4) is adjacent to the concave surface of the free-form mirror (1) along the first direction and is spaced apart. The functional portion (4) is imaged by the free-form mirror (1) to the imaging panel (5) of the telescopic optical instrument and presents a first imaging surface (a); The first imaging plane (a) and the second imaging plane (b) magnified by the telescopic optical instrument are spaced apart; a first distance between the human eye lens and the first imaging plane (a) is smaller than a second distance between the human eye lens and the second imaging plane (b), and the focus of the first imaging plane (a) and the second imaging plane (b) can be switched by adjusting the focal length; The ratio between the target thickness corresponding to the functional portion (4) and the thickness of the substrate (2) is greater than one tenth.

2. The telescopic optical instrument according to claim 1, wherein: The substrate (2) is an acrylic plate with a rectangular format. The plurality of functional parts (4) are distributed in the printing area (A) in a discrete island-like form. The functional parts (4) are translucent gray dots with a transmittance ranging from 50% to 75%.

3. The telescopic optical instrument according to claim 2, wherein: The functional parts (4) are evenly distributed in the width corresponding to the printing area (A), and the functional parts (4) in the 2i-th row and the functional parts (4) in the 2i-1th row are staggered in the width corresponding to the printing area (A), and the spacing arrangement direction of the two is consistent; wherein i is a positive integer.

4. The telescopic optical instrument according to any one of claims 1 to 3, characterized in that: The printing area (A) is fully distributed on the first side of the substrate (2), and the number of the functional parts (4) distributed in the array of the printing area (A) ranges from 98,000 to 100,000; the functional parts (4) are solidified ink.

5. The telescopic optical instrument according to any one of claims 1 to 3, characterized in that: The substrate (2) further comprises a blank area (B), the printing area (A) is arranged outside the blank area (B), the blank area (B) is in the shape of a regular circle and has a corresponding diameter range of 60 mm to 100 mm; The number of the functional parts (4) distributed in the array of the printing area (A) ranges from 92,000 to 94,000, and the functional parts (4) are solidified ink.

6. The telescopic optical instrument according to any one of claims 1 to 3, characterized in that: An anti-reflection film (6) is adhered to the second side of the substrate (2) away from the patterned layer (3), and the anti-reflection film (6) is fully distributed on the second side of the substrate (2) to reduce stray light reflected to the printed optical element.

7. The telescopic optical instrument according to claim 6, wherein: The functional portion (4) has a preset target thickness to protrude from the outer contour surface of the substrate (2); any cross section of the functional portion (4) perpendicular to the first direction is circular, and the diameter range of any cross section is 0.3 mm-0.7 mm.

8. A printing method, characterized in that: The printing method is used for printing the printed optical element of the telescopic optical instrument according to any one of claims 1 to 7, and the printing method comprises: Obtaining a substrate (2) that meets preset printing conditions, wherein the preset printing conditions are used to control the flatness, cleanliness, haze, and reflectivity of the substrate (2); Printing a patterned layer (3) on a first side of the substrate (2) using a digital printer to obtain a first printed plate having a plurality of functional parts (4); An anti-reflection film (6) is bonded to the second side of the substrate (2) of the first printed plate to obtain a second printed plate; wherein the anti-reflection film (6) is completely distributed on the second side of the substrate (2); Testing the transmittance of the functional portion (4) of the second printed board at a corresponding position to determine whether the second printed board meets a preset standard application condition; wherein the transmittance range under the standard application condition is 50%-75%; If the second printed plate meets the standard application conditions, confirming that the second printed plate is qualified; In the case that the second printing plate does not meet the standard application conditions, the patterned layer (3) of the second printing plate is removed and reprinted using the digital printer.

9. The printing method according to claim 8, wherein The digital printer has a positioning system, which is used to monitor the position of the substrate (2) during the printing process; Before printing the patterned layer (3) on the first side of the substrate (2) by a digital printer to obtain a first printed plate having a plurality of functional parts (4), the printing method further comprises: Verifying whether the peripheral edge of the substrate (2) is at a preset target position, the target position being used to calibrate position information of the substrate (2) where the functional portion (4) is to be printed; The patterned layer (3) is printed on the first side of the substrate (2) by a digital printer to obtain a first printed plate having multiple functional parts (4), comprising: Continuously monitoring the real-time position of the peripheral edge of the substrate (2) during the UV printing process through the positioning system, and calculating the deviation between the real-time position and the target position; In the case where the deviation exists, it is determined whether the deviation exceeds a predetermined deviation tolerance range, and when the deviation exceeds the deviation tolerance range, the printing operation of the digital printer is interrupted and the position of the substrate (2) is corrected.

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