Optical synthetic glass structure for long-distance imaging device

Abstract

The utility model discloses an optical synthetic glass structure for a long-distance imaging device. The optical synthetic glass structure comprises optical synthetic glass; one side of the optical synthetic glass is an outer side, and the other side of the optical synthetic glass is an inner side; the optical synthetic glass comprises a first glass cover plate, a first polaroid, a first reflection polaroid, first glass, a first quarter-wave plate and a first anti-reflection unit, or a second glass cover plate, a second polaroid, second glass, a second reflection polaroid, a second quarter-wave plate and a second anti-reflection unit. According to the optical synthetic glass, when external stray light irradiates the inner side of the optical synthetic glass from the outer side of the optical synthetic glass, the light cannot penetrate through the optical synthetic glass again from the inner side after being subjected to secondary reflection or multiple reflection on the inner side, so that a viewer on the outer side cannot see the stray light caused by the fact that the light on the outer side enters a system; and meanwhile, the optical synthetic glass can selectively reflect or transmit light rays generated on the inner side of the optical synthetic glass.

Description

Technical Field

[0001] The utility model relates to the technical field of optical imaging, in particular to an optical synthetic glass structure used for a long-distance imaging device. Background Art

[0002] In the field of long-distance imaging technology, optical imaging systems are often disturbed by external stray light, which may come from ambient light, reflections, or light sources from other imaging devices. Traditional imaging systems usually use simple optical filters or polarizers to reduce the impact of stray light, but these methods often cannot completely block unwanted light, or sacrifice imaging quality while blocking stray light.

[0003] To solve the above problems, researchers have developed a variety of optical components and system designs to improve imaging clarity and contrast while reducing the impact of external stray light. However, these technologies often have disadvantages such as high cost, complex structure or limited effect. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides an optical synthetic glass structure for a long-distance imaging device.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] The utility model provides an optical synthetic glass structure for a long-distance imaging device, comprising: optical synthetic glass;

[0007] One side of the optical synthetic glass is set as the outer side, and the other side is set as the inner side;

[0008] The optical synthetic glass comprises a glass cover plate 1, a polarizer 1, a reflective polarizer 1, a glass 1, a quarter wave plate 1, and an anti-reflection unit 1, or a glass cover plate 2, a polarizer 2, a glass 2, a reflective polarizer 2, a quarter wave plate 2, and an anti-reflection unit 2;

[0009] The glass cover plate 1, polarizing plate 1, reflective polarizing plate 1, glass 1, quarter wave plate 1, and anti-reflection unit 1 are sequentially arranged between the outer side and the inner side;

[0010] The second glass cover plate, the second polarizing plate, the second glass, the second reflective polarizing plate, the second quarter wave plate, and the second anti-reflection unit are sequentially arranged between the outer side and the inner side.

[0011] Preferably, the glass cover plate 1, polarizer 1, reflective polarizer 1, glass 1, quarter wave plate 1, and anti-reflection unit 1 are arranged in parallel in sequence, and the anti-reflection unit 1 includes an anti-reflection film 1 or anti-reflection glass 1.

[0012] Preferably, when external light is incident, the light passes through the glass cover plate 1, the polarizing plate 1, the reflective polarizing plate 1, and the glass 1 in sequence, and the light changes from natural light to linear polarized light 1;

[0013] After further passing through the quarter wave plate 1 and the anti-reflection unit 1, the light becomes circularly polarized light 1;

[0014] After further reflection by the object inside and its direction reversed, it passes through anti-reflection unit 1 and quarter-wave plate 1 in sequence and becomes linear polarized light 2. The polarization direction of linear polarized light 2 is perpendicular to that of linear polarized light 1 and cannot pass through the optical synthetic glass again.

[0015] Preferably, when the light generated on the inner side is forward circularly polarized light 1, the light passes through anti-reflection unit 1, quarter-wave plate 1, and glass 1 in sequence, and becomes linearly polarized light 3, and is consistent with the transmission direction of reflective polarizer 1 and polarizer 1, so that it can be viewed by viewers on the outside.

[0016] Preferably, when the light generated on the inner side is reverse circularly polarized light 1, the light passes through anti-reflection unit 1 and quarter-wave plate 1 in sequence and becomes linearly polarized light 4, and is perpendicular to the transmission direction of reflective polarizer 1 and polarizer 1, and is reflected or blocked, so that it cannot be viewed by viewers outside.

[0017] Preferably, the second glass cover plate, the second polarizer, the second glass, the second reflective polarizer, the second quarter wave plate, and the second anti-reflection unit are arranged in parallel in sequence.

[0018] Preferably, when light from the outside is incident, the light passes through the second glass cover plate, the second polarizer, and the second glass in sequence, and after reflecting the second polarizer, the light changes from natural light to linearly polarized light five;

[0019] After further passing through the quarter wave plate 2 and the anti-reflection unit 2, the light becomes circularly polarized light 2.

[0020] After further reflection from the object inside, the direction is reversed, and then it passes through anti-reflection unit 2 and quarter-wave plate 2 in sequence to become linear polarized light 6. The polarization directions of linear polarized light 6 and linear polarized light 5 are perpendicular and cannot pass through the optical synthetic glass again.

[0021] Preferably, when the light generated on the inner side is forward circularly polarized light 2, the light passes through anti-reflection unit 2 and quarter-wave plate 2 in sequence, and becomes linearly polarized light 7, and is consistent with the transmission direction of reflective polarizer 2 and polarizer 2, so that it can be viewed by viewers outside.

[0022] Preferably, when the light generated on the inner side is reverse circularly polarized light 2, the light passes through anti-reflection unit 2 and quarter-wave plate 2 in sequence and becomes linearly polarized light 8, and is perpendicular to the transmission direction of reflective polarizer 2 and polarizer 2, and is reflected or blocked, so that it cannot be viewed by viewers outside.

[0023] Preferably, the second anti-reflection unit comprises a second anti-reflection film or a second anti-reflection glass.

[0024] The technical solution of the utility model has the following beneficial effects:

[0025] The optical synthetic glass of the utility model is characterized in that when external stray light shines from the outside of the optical synthetic glass to the inside of the optical synthetic glass, the light cannot pass through the optical synthetic glass again from the inside after secondary or multiple reflections on the inside, so that the outside observer will not see the stray light caused by the outside light entering the system; at the same time, the optical synthetic glass can selectively reflect or transmit the light generated by the inside of the optical synthetic glass.

[0026] The utility model can effectively block external stray light from entering the imaging system through the special optical synthetic glass design, thereby reducing interference during imaging and improving imaging quality.

[0027] The optical synthetic glass of the utility model can selectively reflect or transmit the light generated inside as required, which allows the imaging system to adjust its optical performance according to specific applications.

[0028] The optical element combination structure adopted by the utility model is simple and easy to be mass-produced and integrated into the existing imaging system.

[0029] Compared with the traditional complex optical system, the optical synthetic glass of the utility model has lower production and maintenance costs while maintaining high efficiency performance.

[0030] The design of the optical synthetic glass of the utility model allows the definition of forward and reverse circularly polarized light by adjusting the directions of the quarter wave plate, the reflection polarizer and the polarizer, thereby adapting to different imaging requirements and having strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 The optical path of the utility model Figure 1 ;

[0033] Figure 3 The optical path of the utility model Figure 2 . DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] Embodiment 1:

[0040] Reference Figure 1 to Figure 2 , the utility model provides an optical synthetic glass structure for a long-distance imaging device, comprising: an optical synthetic glass 100;

[0041] One side of the optical synthetic glass is set as an outer side A, and the other side is set as an inner side B;

[0042] The optical synthetic glass comprises a glass cover plate 1, a polarizing plate 2, a reflective polarizing plate 3, a glass 4, a quarter wave plate 5, and an anti-reflection unit 6.

[0043] The glass cover plate 1, polarizing plate 2, reflective polarizing plate 3, glass 4, quarter wave plate 5, and anti-reflection unit 6 are sequentially arranged between the outer side A and the inner side B;

[0044] The glass cover plate 1, polarizer 2, reflective polarizer 3, glass 4, quarter wave plate 5, and anti-reflection unit 6 are arranged in parallel in sequence, and the anti-reflection unit 6 includes an anti-reflection film 1 or an anti-reflection glass 1, wherein the glass cover plate 1 is a tempered glass cover plate as the outermost layer of optical synthetic glass, which plays a role in protecting the internal optical elements and preventing external environmental factors such as dust, water vapor, impact, etc. from damaging the internal structure.

[0045] The optical path principle of this embodiment 1 is as follows:

[0046] When light from the outside A shines in, the light passes through the glass cover 1, polarizer 2, and reflective polarizer 3 in sequence, and the light changes from natural light to linear polarized light. The light further passes through glass 4, quarter wave plate 5, and anti-reflection unit 6 in sequence, and the light changes to circular polarized light. If the light is further reflected by the object on the inner side B of the optical synthetic glass, the direction of the circular polarized light will be reversed. If the reversed circular polarized light wants to pass through the optical synthetic glass from the inner side of the optical synthetic glass, the reversed circular polarized light will pass through the anti-reflection unit 6, quarter wave plate 5, and glass 4 in sequence. Due to the action of the quarter wave plate 5, the light will become linear polarized light again, and the polarization direction of the linear polarized light at this time will be perpendicular to the polarization direction of the linear polarized light when it enters. Therefore, the light cannot further pass through the reflective polarizer 3, polarizer 2, and tempered glass 1.

[0047] When the light from the inner side B needs to pass through the optical synthetic glass: if the light is positive circularly polarized light (positive represents the direction of circularly polarized light that can pass through the optical synthetic glass from the inner side, not a specific circularly polarized light direction. The directions of the quarter wave plate 5, the reflective polarizer 3, and the polarizer 2 can be adjusted according to the needs to realize the definition of positive circularly polarized light). When the light passes through the anti-reflection unit 6, the quarter wave plate 5, and the glass 4 in sequence, it optically becomes linearly polarized light, and the direction of the linear polarized light at this time is consistent with the transmission direction of the reflective polarizer 3 and the polarizer 2. The further light can pass through the reflective polarizer 3, the polarizer 2, and the glass cover 1 in sequence to be viewed by the viewer on the outer side A of the optical synthetic glass.

[0048] If the light is reverse circularly polarized light (reverse means the direction of circularly polarized light that cannot pass through the optical synthetic glass from the inside, not a specific circularly polarized light direction. The directions of the quarter wave plate 5, the reflective polarizer 3, and the polarizer 2 can be adjusted according to the needs to realize the definition of reverse circularly polarized light). When the light passes through the anti-reflection unit 6, the quarter wave plate 5, and the glass 4 in sequence, the light becomes linearly polarized light, and the direction of the linear polarized light at this time is perpendicular to the transmission direction of the reflective polarizer 3 and the polarizer 2. Further light is reflected by the reflective polarizer 3, and if the reflection is incomplete, it will be further blocked by the polarizer 2, so that it cannot be viewed by the viewer on the outside A of the optical synthetic glass.

[0049] Embodiment 2:

[0050] Reference Figure 3 , the utility model provides an optical synthetic glass structure for a long-distance imaging device, comprising: an optical synthetic glass 100;

[0051] One side of the optical synthetic glass 100 is set as the outer side A, and the other side is set as the inner side B;

[0052] The optical synthetic glass includes a glass cover plate 10, a polarizer 20, a glass 40, a reflective polarizer 30, a quarter wave plate 50, and an anti-reflection unit 60; the glass cover plate 10, the polarizer 20, the glass 40, the reflective polarizer 30, the quarter wave plate 50, and the anti-reflection unit 60 are sequentially arranged between the outer side A and the inner side B, the glass cover plate 10, the polarizer 20, the glass 40, the reflective polarizer 30, the quarter wave plate 50, and the anti-reflection unit 60 are sequentially arranged in parallel, and the anti-reflection unit 60 includes an anti-reflection film 2 or an anti-reflection glass 2.

[0053] The optical path principle of this embodiment 2 is as follows:

[0054] When light from the outside shines in, the light passes through the glass cover plate 10, polarizer 20, glass 40, and reflective polarizer 30 in sequence, and the light changes from natural light to linear polarized light. After the light passes through the quarter wave plate 50 and anti-reflection unit 60 in sequence, the light changes to circular polarized light. If the light is further reflected by the object B on the inner side of the optical synthetic glass, the direction of the circularly polarized light is reversed. If the reversed circularly polarized light wants to pass through the optical synthetic glass from the inner side of the optical synthetic glass, the reversed circularly polarized light will pass through the anti-reflection unit 60 and quarter wave plate 50 in sequence. Due to the action of the quarter wave plate 50, the light will become linear polarized light again, and the polarization direction of the linear polarized light at this time will be perpendicular to the polarization direction when it enters. Then the light will eventually be unable to pass through the reflective polarizer 30, glass 40, polarizer 20, and glass cover plate 10.

[0055] When the light from the inner side B needs to pass through the optical synthetic glass: if the light is positive circularly polarized light (positive represents the direction of circularly polarized light that can pass through the optical synthetic glass from the inner side, not a specific circularly polarized light direction. The directions of the quarter wave plate 2 50, the reflective polarizer 2 30, and the polarizer 2 20 can be adjusted according to the needs to realize the definition of positive circularly polarized light). When the light passes through the anti-reflection unit 2 60 and the quarter wave plate 2 50 in sequence, it optically becomes linearly polarized light, and the direction of the linear polarized light at this time is consistent with the transmission direction of the reflective polarizer 2 30 and the polarizer 2 20. Further light can pass through the reflective polarizer 2 30, the glass 2 40, the polarizer 2 20, and the glass cover 2 10 in sequence to be viewed by the viewer on the outer side A of the optical synthetic glass.

[0056] If the light is reverse circularly polarized light (reverse means the direction of circularly polarized light that cannot pass through the optical synthetic glass from the inside, and does not represent a specific circularly polarized light direction. The directions of the quarter wave plate 2 50, the reflective polarizer 2 30, and the polarizer 2 20 can be adjusted as needed to achieve the definition of reverse circularly polarized light). When the light passes through the anti-reflection unit 2 60 and the quarter wave plate 2 50 in sequence, the light becomes linearly polarized light, and the direction of the linear polarization light at this time is perpendicular to the transmission direction of the reflective polarizer 2 30 and the polarizer 2 20. Further light is reflected by the reflective polarizer 2 30, and if the reflection is incomplete, it will be further blocked by the polarizer 2 20, so that it cannot be viewed by the viewer on the outside A of the optical synthetic glass.

[0057] As can be seen from the above embodiments, the utility model discloses an optical synthetic glass for a long-distance imaging device. The characteristic is that when external stray light shines from the outside of the optical synthetic glass to the inside of the optical synthetic glass, the light cannot pass through the optical synthetic glass from the inside again after secondary or multiple reflections on the inside. It is achieved that the outside observer will not see the stray light caused by the outside light entering the system. At the same time, the optical synthetic glass can selectively reflect or transmit the light generated on the inside of the optical synthetic glass.

[0058] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An optical synthetic glass structure for a long-distance imaging device, characterized in that: include: Optical synthetic glass; One side of the optical synthetic glass is set as the outer side (A), and the other side is set as the inner side (B); The optical synthetic glass comprises a glass cover plate 1 (1), a polarizing plate 1 (2), a reflective polarizing plate 1 (3), a glass 1 (4), a quarter wave plate 1 (5), and an anti-reflection unit 1 (6), or a glass cover plate 2 (10), a polarizing plate 2 (20), a glass 2 (40), a reflective polarizing plate 2 (30), a quarter wave plate 2 (50), and an anti-reflection unit 2 (60); The glass cover plate (1), polarizing plate (2), reflective polarizing plate (3), glass (4), quarter wave plate (5), and anti-reflection unit (6) are sequentially arranged between the outer side (A) and the inner side (B); The second glass cover plate (10), the second polarizing plate (20), the second glass (40), the second reflective polarizing plate (30), the second quarter wave plate (50), and the second anti-reflection unit (60) are sequentially arranged between the outer side (A) and the inner side (B).

2. The optical synthetic glass structure for a long-distance imaging device according to claim 1, characterized in that: The glass cover plate (1), polarizing plate (2), reflective polarizing plate (3), glass (4), quarter wave plate (5), and anti-reflection unit (6) are arranged in parallel in sequence, and the anti-reflection unit (6) includes an anti-reflection film (1) or an anti-reflection glass (1).

3. The optical synthetic glass structure for a long-distance imaging device according to claim 2, characterized in that: When light from the outside shines in, it passes through the glass cover plate 1 (1), polarizing plate 1 (2), reflective polarizing plate 1 (3), and glass 1 (4) in sequence, and the light changes from natural light to linear polarized light 1; After further passing through a quarter wave plate 1 (5) and an anti-reflection unit 1 (6), the light becomes circularly polarized light 1; After further being reflected by the object inside and reversed in direction, it then passes through the anti-reflection unit 1 (6) and the quarter-wave plate 1 (5) in sequence and becomes linear polarized light 2. The polarization direction of linear polarized light 2 is perpendicular to that of linear polarized light 1 and cannot pass through the optical synthetic glass again.

4. The optical synthetic glass structure for a long-distance imaging device according to claim 3, characterized in that: When the light generated on the inner side is positive circularly polarized light 1, the light passes through the anti-reflection unit 1 (6), the quarter-wave plate 1 (5), and the glass 1 (4) in sequence, and becomes linearly polarized light 3, and is consistent with the transmission direction of the reflective polarizer 1 (3) and the polarizer 1 (2), so that it can be viewed by the outside observer.

5. The optical synthetic glass structure for a long-distance imaging device according to claim 4, characterized in that: When the light generated on the inner side is reverse circularly polarized light 1, the light passes through the anti-reflection unit 1 (6) and the quarter-wave plate 1 (5) in sequence and becomes linearly polarized light 4, which is perpendicular to the transmission direction of the reflective polarizer 1 (3) and the polarizer 1 (2), and is reflected or blocked, so that it cannot be viewed by viewers outside.

6. The optical synthetic glass structure for a long-distance imaging device according to claim 1, characterized in that: The second glass cover plate (10), the second polarizing plate (20), the second glass (40), the second reflective polarizing plate (30), the second quarter wave plate (50), and the second anti-reflection unit (60) are arranged in parallel in sequence.

7. The optical synthetic glass structure for a long-distance imaging device according to claim 6, characterized in that: When light from the outside is incident, the light passes through the glass cover plate 2 (10), the polarizing plate 2 (20), and the glass 2 (40) in sequence, and after reflecting the polarizing plate 2 (30), the light changes from natural light to linearly polarized light 5; After further passing through the quarter wave plate 2 (50) and the anti-reflection unit 2 (60), the light becomes circularly polarized light 2. After further reflection by the object inside, the direction is reversed, and then it passes through the anti-reflection unit 2 (60) and the quarter-wave plate 2 (50) in sequence to become linear polarized light 6. The polarization direction of linear polarized light 6 is perpendicular to that of linear polarized light 5 and cannot pass through the optical synthetic glass again.

8. The optical synthetic glass structure for a long-distance imaging device according to claim 7, characterized in that: When the light generated on the inner side is positive circularly polarized light 2, the light passes through anti-reflection unit 2 (60) and quarter-wave plate 2 (50) in sequence, and becomes linearly polarized light 7, and is consistent with the transmission direction of reflective polarizer 2 (30) and polarizer 2 (20), so that it can be viewed by viewers on the outside.

9. The optical synthetic glass structure for a long-distance imaging device according to claim 8, characterized in that: When the light generated on the inner side is reverse circularly polarized light 2, the light passes through anti-reflection unit 2 (60) and quarter-wave plate 2 (50) in sequence and then becomes linearly polarized light 8, which is perpendicular to the transmission direction of reflective polarizer 2 (30) and polarizer 2 (20), and is reflected or blocked, so that it cannot be viewed by viewers outside.

10. The optical synthetic glass structure for a long-distance imaging device according to claim 9, characterized in that: The second anti-reflection unit (60) includes a second anti-reflection film or a second anti-reflection glass.

Images