Superlens imaging module
By designing an ultralens for three primary colors of light in the ultralens imaging module, red, green and blue, and using a refractive prism and reflective film to turn the light, the light paths of the three primary colors of light overlap, and finally forming a color photo on the photosensitive chip, solving the problem of the degradation of imaging quality when processing multi-color light, and achieving efficient color imaging.
Patent Information
- Application Number
- CN202421642292.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The imaging quality of existing ultralenses significantly decreases when processing multicolor light, and the manufacturing process limits its processing ability to multicolor light, making it difficult to image color light on the photosensitive chip.
A superlens imaging module is designed to prepare a superlens for three primary colors of red, green and blue on three refractive prisms, and use the refractive prism and reflective film to turn the light, so that the optical paths of the three primary colors of light overlap, and finally form a color photo on the photosensitive chip.
It is realized that color light can be imaged on the photosensitive chip using only ultralens and prisms, which improves the quality and efficiency of color imaging and reduces manufacturing costs.
Smart Images
Figure CN222748775U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of superlens imaging, in particular to a superlens imaging module. Background Art
[0002] Optical primary colors (RGB): red, green, and blue. The three optical primary colors can be mixed in different proportions to create a variety of colors.
[0003] A superlens is a special lens whose design and working principle are different from those of a conventional lens. Superlenses usually use subwavelength-scale structures to control the phase and amplitude of light to achieve focusing or other specific optical functions. This control is usually optimized for light of a specific wavelength or frequency. When it comes to polychromatic light or white light, the propagation and phase control behavior of light of different wavelengths in a superlens will be different. Since the design of the superlens is optimized for a specific wavelength, when light of other wavelengths passes through, it may not be effectively focused or imaged. For example, a red light superlens can only effectively focus or image red light, a green light superlens can only effectively focus or image green light, and a blue light superlens can only effectively focus or image blue light. This results in a significant decrease in the imaging quality of the superlens when processing polychromatic light.
[0004] In addition, the manufacturing process of the metalens may also limit its ability to handle multi-color light. Manufacturing metalens usually requires high-precision processing techniques, which may only be applicable to a specific wavelength or wavelength range. If you try to adapt the metalens to a wider spectral range, it may require a more complex manufacturing process, which may increase the cost and difficulty of manufacturing.
[0005] In summary, due to the limitations of the working principle and manufacturing process of the metalens, it can usually only effectively image monochromatic light. If imaging is required in a wider spectral range, other types of optical elements or technologies may be required. The current technical problem is how to achieve imaging of colored light on a photosensitive chip using only a metalens and a prism. Utility Model Content
[0006] The purpose of the utility model is to provide a superlens imaging module, which aims to realize imaging of colored light on a photosensitive chip using only a superlens and a prism.
[0007] The utility model provides a super lens imaging module, comprising a first refractive prism, a second refractive prism, a third refractive prism and a photosensitive chip, wherein the third refractive prism is arranged between the first refractive prism and the second refractive prism;
[0008] The first refractive prism includes a first super lens, which is disposed on the upper surface of the first refractive prism, and the first super lens is used to focus the first primary color light toward its central axis, and the first refractive prism is used to refract the reflected light of the object into the third refractive prism;
[0009] The second refractive prism includes a second super lens, which is disposed on the upper surface of the first refractive prism, and the second super lens is used to focus the second primary color light toward its central axis, and the second refractive prism is used to refract the reflected light of the object into the third refractive prism;
[0010] The third refractive prism includes a third super lens, which is disposed on the upper surface of the third refractive prism, and is used to focus the third primary color light toward its central axis, and the third refractive prism is used to refract the reflected light of the subject and then emit it toward the photosensitive chip;
[0011] The third refractive prism is provided with a first reflective film and a second reflective film, both of which can transmit the third primary color light, the first reflective film is used to reflect the first primary color light entering the third refractive prism, and the reflected light coincides with the third primary color light, and the second reflective film is used to reflect the second primary color light entering the third refractive prism, and the reflected light coincides with the third primary color light.
[0012] Optionally, the third refractive prism is in the shape of a rectangular parallelepiped, and includes an upper prism, a lower prism, a left prism and a right prism, all of which are isosceles right-angled triangular prisms. The third super lens is arranged on the side of the upper prism facing the outside of the third refractive prism. The upper prism is the same size as the lower prism and is symmetrically positioned. The side of the lower prism facing the outside of the third refractive prism faces the photosensitive chip. The left prism is the same size as the right prism and is symmetrically positioned. The angular bisectors of the edges of the left prism and the right prism facing the third refractive prism intersect with the central axis of the first super lens and the central axis of the second super lens. The angular bisectors of the edges of the upper prism and the lower prism facing the third refractive prism are collinear with the central axis of the third super lens.
[0013] Optionally, the first side surface of the left prism is in contact with the side surface of the first refractive prism, the second side surface of the left prism is in contact with the side surface of the upper prism and the first reflective film is sandwiched therebetween, and the third side surface of the left prism is in contact with the side surface of the lower prism and the second reflective film is sandwiched therebetween;
[0014] The first side surface of the right prism is in contact with the side surface of the second refracting prism, the second side surface of the right prism is in contact with the side surface of the upper prism and sandwiched with the second reflective film, and the third side surface of the right prism is in contact with the side surface of the lower prism and sandwiched with the first reflective film.
[0015] Optionally, the first refractive prism and the second refractive prism are both in the shape of isosceles right-angled triangular prisms.
[0016] Optionally, of the two mutually perpendicular side surfaces of the first refractive prism, one side surface is provided with the first super lens, and the other side surface is in contact with the side surface of the left prism; of the two mutually perpendicular side surfaces of the second refractive prism, one side surface is provided with the second super lens, and the other side surface is in contact with the side surface of the right prism.
[0017] Optionally, the first super lens, the second super lens and the third super lens are located in the same plane.
[0018] Optionally, a third reflective film is provided on the side of the first refractive prism parallel to the first reflective film, and the third reflective film is used to reflect the first primary color light focused by the first super lens toward the left prism; a fourth reflective film is provided on the side of the second refractive prism parallel to the second reflective film, and the fourth reflective film is used to reflect the second primary color light focused by the second super lens toward the right prism.
[0019] Optionally, the first refractive prism and the second refractive prism are of the same size and are symmetrically arranged with respect to the third refractive prism.
[0020] Optionally, the side surfaces of the first refractive prism and the left prism completely overlap with each other; and the side surfaces of the second refractive prism and the right prism completely overlap with each other.
[0021] Optionally, the first reflective film and the second reflective film are unidirectional reflective light-transmitting films.
[0022] The technical effects achieved by the utility model using the above technical solution are:
[0023] Super lenses for the three primary colors of R / G / B are prepared on three refracting prisms respectively. The three super lenses capture the light of the external scene at the same time. The light paths of the three primary colors are overlapped by the deflection of the light by the refracting prism and the reflective film. Finally, the imaging light is converged on a photosensitive chip at the same time, and the three primary colors of R / G / B are superimposed together to form a color photo. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A stereoscopic diagram of a superlens imaging module in an embodiment;
[0025] Figure 2 Schematic diagram of the optical path of the superlens imaging module in the embodiment;
[0026] Figure 3 is a schematic diagram of the optical path of the first primary color light in the embodiment;
[0027] Figure 4 is a schematic diagram of the optical path of the second primary color light in the embodiment;
[0028] Figure 5 Schematic diagram of the optical path of the third primary color light in the embodiment.
[0029] Reference numerals:
[0030] 1. First super lens; 2. Second super lens; 3. Third super lens; 4. First refractive prism; 5. Second refractive prism; 6. Third refractive prism; 61. Upper prism; 62. Lower prism; 63. Left prism; 64. Right prism; 7. First reflective film; 8. Second reflective film; 9. Third reflective film; 10. Fourth reflective film; 11. Photosensitive chip. DETAILED DESCRIPTION
[0031] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0033] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0034] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.
[0035] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.
[0036] Please refer to Figure 1 and Figure 2 The super lens imaging module includes a first refractive prism 4, a second refractive prism 5, a third refractive prism 6 and a photosensitive chip 11, and the third refractive prism 6 is arranged between the first refractive prism 4 and the second refractive prism 5;
[0037] The first refractive prism 4 includes a first super lens 1, which is disposed on the upper surface of the first refractive prism 4, and is used to focus the first primary color light toward its central axis. The first refractive prism 4 is used to refract the reflected light of the subject into the third refractive prism 6;
[0038] The second refractive prism 5 includes a second super lens 2, which is disposed on the upper surface of the second refractive prism 5. The second super lens 2 is used to focus the second primary color light toward its central axis. The second refractive prism 5 is used to refract the reflected light of the subject into the third refractive prism 6.
[0039] The third refractive prism 6 includes a third super lens 3, which is disposed on the upper surface of the third refractive prism 6. The third super lens 3 is used to focus the third primary color light toward its own central axis. The third refractive prism 6 is used to refract the reflected light of the subject and then project it toward the photosensitive chip 11.
[0040] The third refractive prism 6 is provided with a first reflective film 7 and a second reflective film 8. Both the first reflective film 7 and the second reflective film 8 can transmit the third primary color light. The first reflective film 7 is used to reflect the first primary color light entering the third refractive prism 6, and the reflected light coincides with the third primary color light. The second reflective film 8 is used to reflect the second primary color light entering the third refractive prism 6, and the reflected light coincides with the third primary color light.
[0041] The first refractive prism 4 and the second refractive prism 5 are isosceles right triangular prisms of the same size, and an isosceles right triangular prism is a right triangular prism whose base is an isosceles right triangle; the third refractive prism 6 is a cuboid, and the third refractive prism 6 is located between the first refractive prism 4 and the second refractive prism 5, and the first refractive prism 4 and the second refractive prism 5 are symmetrically arranged about the third refractive prism 6.
[0042] The surfaces of the first refractive prism 4, the second refractive prism 5 and the third refractive prism 6 that reflect light toward the subject are located in the same plane, the first refractive prism 4 is located on the side surface in the plane to prepare the first super lens 1, the second refractive prism 5 is located on the side surface in the plane to prepare the second super lens 2, and the third refractive prism 6 is located on the side surface in the plane to prepare the third super lens 3. That is, the first super lens 1, the second super lens 2 and the third super lens 3 are located in the same plane, and the super lens is a special lens that uses a sub-wavelength scale structure to control the phase and amplitude of light to achieve focusing. This control is usually optimized for light of a specific wavelength or frequency.
[0043] The first superlens 1 is a superlens optimized for the first primary color light, such as R color light (red light), and can focus the first primary color light. When the light is emitted to the first superlens 1 from various angles, the first primary color light will be focused on the central axis of the first superlens 1. The second superlens 2 is a superlens optimized for the second primary color light, such as G color light (green light), and can focus the second primary color light. When the light is emitted to the second superlens 2 from various angles, the second primary color light will be focused on the central axis of the second superlens 2. The third superlens 3 is a superlens optimized for the third primary color light, such as B color light (blue light), and can focus the third primary color light. When the light is emitted to the third superlens 3 from various angles, the third primary color light will be focused on the central axis of the third superlens 3.
[0044] The third refractive prism 6 is composed of an upper prism 61, a lower prism 62, a left prism 63 and a right prism 64, all of which are isosceles right-angled triangular prisms; the bottom surface of the third refractive prism 6 can be a rectangle, in which case the upper prism 61 and the lower prism 62 are symmetrically positioned and have the same size, and the left prism 63 and the right prism 64 are symmetrically positioned and have the same size; the bottom surface of the third refractive prism 6 can also be a square, in which case the upper prism 61, the lower prism 62, the left prism 63 and the right prism 64 are all the same size. The third super lens 3 is arranged on the side of the upper prism 61 facing the outside of the third refractive prism 6; the side of the lower prism 62 facing the outside of the third refractive prism 6 is directly opposite to the photosensitive chip 11.
[0045] Of the three side surfaces of the left prism 63, the first side surface (i.e., the side surface facing left) is in contact with the side surface facing right of the first refractive prism 4, the second side surface (i.e., the side surface facing upward) is in contact with the side surface facing left and below of the upper prism 61 and is sandwiched with the first reflective film 7, and the third side surface (i.e., the side surface facing downward) is in contact with the side surface facing left of the lower prism 62 and is sandwiched with the second reflective film 8. Of the three side surfaces of the right prism 64, the first side surface (i.e., the side surface facing right) is in contact with the side surface facing left of the second refractive prism 5, the second side surface (i.e., the side surface facing upward) is in contact with the side surface facing right and below of the upper prism 61 and is sandwiched with the second reflective film 8, and the third side surface (i.e., the side surface facing downward) is in contact with the side surface facing right of the lower prism 62 and is sandwiched with the first reflective film 7.
[0046] The first reflection film 7 and the second reflection film 8 can both transmit the third primary color light; the first reflection film 7 is used to reflect the first primary color light entering the third refractive prism 6, and the reflected light of the first reflection film 7 coincides with the third primary color light passing through the first reflection film 7 and the second reflection film 8; the second reflection film 8 is used to reflect the second primary color light entering the third refractive prism 6, and the reflected light of the second reflection film 8 coincides with the third primary color light passing through the first reflection film 7 and the second reflection film 8.
[0047] Of the two mutually perpendicular side surfaces of the first refractive prism 4, one side surface is provided with the above-mentioned first super lens 1, and the other side surface completely overlaps with the left side surface of the third refractive prism 6; the third side surface of the first refractive prism 4 is parallel to the first reflective film 7, and the side surface is used to reflect the focused first primary color light beam. When the focused first primary color light beam is incident on the side surface, there is a refracted light beam emitted to the left, and there is also a reflected light beam emitted to the right side toward the third refractive prism 6. If it is necessary to improve the reflection effect and increase the brightness of the light, a third reflective film 9 can be plated on the side surface so that the first primary color light incident on the side surface is completely reflected toward the third refractive prism 6.
[0048] Of the two mutually perpendicular side surfaces of the second refractive prism 5, one side surface is provided with the above-mentioned second super lens 2, and the other side surface completely overlaps with the right side surface of the third refractive prism 6; the third side surface of the second refractive prism 5 is parallel to the second reflective film 8, and the side surface is used to reflect the focused second primary color light beam. When the focused second primary color light beam is incident on the side surface, there is a refracted light beam emitted to the right side, and at the same time, there is a reflected light beam emitted to the left side toward the third refractive prism 6. If it is necessary to improve the reflection effect and increase the brightness of the light, a fourth reflective film 10 can be plated on the side surface so that the second primary color light incident on the side surface is completely reflected toward the third refractive prism 6.
[0049] In the metalens imaging module proposed in this embodiment, the first reflection film 7 and the second reflection film 8 are both unidirectional reflection and light-transmitting films. The unidirectional reflection and light-transmitting film is a film with special optical properties. The principle is to use the propagation characteristics of light and the design of the film structure to enable light to pass through the film in one direction and be reflected in another direction. Although the first reflection film 7 and the third reflection film 9 are both reflection films for the first primary color light, the first reflection film 7 is a unidirectional reflection and light-transmitting film, which has a function better than the third reflection film 9: the first reflection film 7 can reflect the first primary color light on the side close to the third reflection film 9, and can also transmit other primary color lights on the other side. Similarly, although the second reflection film 8 and the fourth reflection film 10 are both reflection films for the second primary color light, the second reflection film 8 is a unidirectional reflection and light-transmitting film, which has a function better than the fourth reflection film 10: the second reflection film 8 can reflect the second primary color light on the side close to the fourth reflection film 10, and can also transmit other primary color lights on the other side.
[0050] Please refer to Figure 2 and Figure 3, the angle bisectors of the left prism 63 and the right prism 64 facing the third refractive prism 6 intersect with the central axis of the first super lens 1 and the central axis of the second super lens 2. The first primary color light beam focused at the central axis of the first refractive prism 4 is reflected when it reaches the mirror surface in the first refractive prism 4, and the reflected light beam is perpendicular to the left side of the left prism 63 and directly irradiates the central axis of the third refractive prism 6. Since the reflected light beam has a width range, the first reflective films 7 at both the upper and lower positions of the central axis of the third refractive prism 6 can reflect the light beam, and the light beam reflected by the first reflective film 7 is deflected 90° and enters the lower prism 62.
[0051] Similarly, please refer to Figure 2 and Figure 4 The second primary color light beam focused at the central axis of the second refractive prism 5 is reflected when it reaches the mirror surface in the second refractive prism 5, and the reflected light beam is perpendicular to the right side surface of the right prism 64 and directly shoots to the central axis of the third refractive prism 6. Since the reflected light beam has a width range, the second reflective films 8 at both the upper and lower positions of the central axis of the third refractive prism 6 can reflect the light beam, and the light beam reflected by the second reflective film 8 is deflected 90° and enters the lower prism 62.
[0052] Please refer to Figure 2 and Figure 5 , the angular bisectors of the upper prism 61 and the lower prism 62 facing the edges in the third refractive prism 6 are collinear with the central axis of the third super lens 3. The third primary color light beam focused at the central axis of the third refractive prism 6, after passing through the first reflective film 7 and the second reflective film 8 along the angular bisector of the upper prism 61, still enters the lower prism 62 along the angular bisector of the lower prism 62 without changing direction and is emitted perpendicularly to the lower side surface of the lower prism 62, and then is emitted perpendicularly to the upper surface of the photosensitive chip 11. The upper prism 61 and the lower prism 62 both have the function of refracting light, but since the third primary color light beam focused by the third super lens 3 is emitted perpendicularly to the upper side surface of the upper prism 61, the angular bisector of the upper prism 61, the angular bisector of the lower prism 62, and the lower side surface of the lower prism 62, the optical path is a straight line.
[0053] The working mode of the above-mentioned super lens imaging module is as follows: the first primary color light is focused at the central axis of the first super lens 1 and in the first refractive prism 4, and is incident on the left prism 63 after the light path is turned by the first refractive prism 4, and then enters the lower prism 62 after being reflected by the first reflective film 7; the second primary color light is focused at the central axis of the second super lens 2 and in the second refractive prism 5, and is incident on the right prism 64 after the light path is turned by the second refractive prism 5, and then enters the lower prism 62 after being reflected by the second reflective film 8; the third primary color light is focused at the central axis of the third super lens 3 and in the third refractive prism 6, and then is incident on the lower prism 62 through the first reflective film 7 and the second reflective film 8; the three primary color lights overlap in the lower prism 62, and are directly incident on the photosensitive chip 11 perpendicular to the lower side of the lower prism 62, so that the three primary color lights of R / G / B are superimposed together and converged on the photosensitive chip 11 to form a color photo.
[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A superlens imaging module, characterized in that: It comprises a first refractive prism (4), a second refractive prism (5), a third refractive prism (6) and a photosensitive chip (11), wherein the third refractive prism (6) is arranged between the first refractive prism (4) and the second refractive prism (5); The first refractive prism (4) comprises a first super lens (1), the first super lens (1) being arranged on the upper surface of the first refractive prism (4), the first super lens (1) being used for focusing the first primary color light toward its own central axis, and the first refractive prism (4) being used for refracting the reflected light of the object into the third refractive prism (6); The second refractive prism (5) comprises a second super lens (2), the second super lens (2) being arranged on the upper surface of the second refractive prism (5), the second super lens (2) being used for focusing the second primary color light toward its own central axis, and the second refractive prism (5) being used for refracting the reflected light of the object into the third refractive prism (6); The third refractive prism (6) comprises a third super lens (3), the third super lens (3) is arranged on the upper surface of the third refractive prism (6), the third super lens (3) is used to focus the third primary color light toward its own central axis, and the third refractive prism (6) is used to refract the reflected light of the subject and then emit it toward the photosensitive chip (11); A first reflective film (7) and a second reflective film (8) are provided inside the third refractive prism (6); both the first reflective film (7) and the second reflective film (8) are capable of transmitting the third primary color light; the first reflective film (7) is used to reflect the first primary color light entering the third refractive prism (6), and the reflected light coincides with the third primary color light; the second reflective film (8) is used to reflect the second primary color light entering the third refractive prism (6), and the reflected light coincides with the third primary color light.
2. The superlens imaging module according to claim 1, characterized in that: The third refractive prism (6) is in the shape of a rectangular parallelepiped. The third refractive prism (6) comprises an upper prism (61), a lower prism (62), a left prism (63) and a right prism (64), all of which are in the shape of isosceles right triangular prisms. The third super lens (3) is arranged on the side of the upper prism (61) facing the outside of the third refractive prism (6). The upper prism (61) and the lower prism (62) are of the same size and symmetrically positioned. The side of the lower prism (62) facing the outside of the third refractive prism (6) is directly opposite to the third super lens (3). A photosensitive chip (11), wherein the left prism (63) and the right prism (64) are of the same size and symmetrically positioned, the angle bisectors of the edges of the left prism (63) and the right prism (64) facing the third refractive prism (6) intersect with the central axis of the first metal lens (1) and the central axis of the second metal lens (2), and the angle bisectors of the edges of the upper prism (61) and the lower prism (62) facing the third refractive prism (6) are collinear with the central axis of the third metal lens (3).
3. The superlens imaging module according to claim 2, characterized in that: The first side surface of the left prism (63) is in contact with the side surface of the first refractive prism (4), the second side surface of the left prism (63) is in contact with the side surface of the upper prism (61) and the first reflective film (7) is sandwiched therebetween, and the third side surface of the left prism (63) is in contact with the side surface of the lower prism (62) and the second reflective film (8) is sandwiched therebetween; The first side surface of the right prism (64) is in contact with the side surface of the second refractive prism (5), the second side surface of the right prism (64) is in contact with the side surface of the upper prism (61) and the second reflective film (8) is sandwiched therebetween, and the third side surface of the right prism (64) is in contact with the side surface of the lower prism (62) and the first reflective film (7) is sandwiched therebetween.
4. The superlens imaging module according to claim 2, characterized in that: The first refractive prism (4) and the second refractive prism (5) are both in the shape of isosceles right-angled triangular prisms.
5. The superlens imaging module according to claim 4, characterized in that: Of the two mutually perpendicular side surfaces of the first refractive prism (4), one side surface is provided with the first super lens (1), and the other side surface is in contact with the side surface of the left prism (63); and of the two mutually perpendicular side surfaces of the second refractive prism (5), one side surface is provided with the second super lens (2), and the other side surface is in contact with the side surface of the right prism (64).
6. The superlens imaging module according to claim 1, characterized in that: The first super lens (1), the second super lens (2) and the third super lens (3) are located in the same plane.
7. The superlens imaging module according to claim 5, characterized in that: A third reflection film (9) is provided on the side of the first refractive prism (4) parallel to the first reflection film (7), and the third reflection film (9) is used to reflect the first primary color light focused by the first super lens (1) toward the left prism (63); a fourth reflection film (10) is provided on the side of the second refractive prism (5) parallel to the second reflection film (8), and the fourth reflection film (10) is used to reflect the second primary color light focused by the second super lens (2) toward the right prism (64).
8. The superlens imaging module according to claim 4, characterized in that: The first refractive prism (4) and the second refractive prism (5) are of the same size and are symmetrically arranged with respect to the third refractive prism (6).
9. The superlens imaging module according to claim 8, characterized in that: The side surfaces of the first refractive prism (4) and the left prism (63) that are in contact with each other completely overlap; and the side surfaces of the second refractive prism (5) and the right prism (64) that are in contact with each other completely overlap.
10. The superlens imaging module according to claim 7, characterized in that: The first reflective film (7) and the second reflective film (8) are unidirectional reflective light-transmitting films.