Display system and achromatic lens combination thereof

Abstract

The present invention relates to the field of display technology, and in particular to a display system and an achromatic lens combination thereof. The achromatic lens combination includes a first concave lens, a circular polarizer, and a magnifying convex lens combination. The first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface are opposite to each other, and the light-receiving surface is a plane or a convex surface. The circular polarizer is arranged on the concave surface of the first concave lens, and the circular polarizer is curved corresponding to the concave surface. The magnifying convex lens combination is arranged on the circular polarizer with the aid of optical glue, and the first concave lens, the circular polarizer, and the magnifying convex lens combination are all arranged in sequence along the optical axis. When the light-receiving surface is a convex surface, the circular polarizer can be arranged on the light-receiving surface to be curved corresponding to the convex surface, so that the circular polarizer, the first concave lens, and the magnifying convex lens combination are all arranged in sequence along the optical axis.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display system and an achromatic lens combination thereof. Background Art

[0002] The Pancake optical design is based on the principle of polarized light. It utilizes the reflective polarizer's ability to selectively reflect and project light of different polarizations, and works with a quarter-wave plate to adjust the polarization morphology. This allows light to reflect back and forth between the half-mirror lens and the reflective polarizer, ultimately transmitting through the reflective polarizer. After passing through the quarter-wave plate, circularly polarized light becomes linearly polarized light, reaching the reflective polarizer and being reflected. It then passes through the quarter-wave plate a second time, transforming back into circularly polarized light and being reflected by the half-mirror. The circularly polarized light passes through the quarter-wave plate a third time, becoming linearly polarized again. Because the light is rotated 90° this time compared to the first time, it is able to pass through the reflective polarizer to complete the image.

[0003] Pancake solutions are a combination of lenses, typically adjusting focus by controlling the position of one lens. For myopic users, adjusting focus on virtual reality (VR) head-mounted displays (HMDs) has traditionally involved replacing lenses, a cumbersome trial-and-error process and limited focal length options. The upgrade to Pancake technology has provided more convenient focus adjustment options. Because Pancake solutions typically combine multiple lenses, adjusting the refractive index of the entire optical module by moving one lens is feasible, meeting focus requirements. This approach is not possible with traditional lenses or Fresnel lenses. However, because color dispersion is dependent on the wavelength of light, combinations of traditional lenses, Fresnel lenses, and Pancake lenses all exhibit color dispersion. The focal length of a lens varies with the wavelength of light, resulting in longitudinal dispersion. The magnification of a lens is also dependent on the wavelength of light, resulting in transverse dispersion. Therefore, color dispersion cannot be completely eliminated. Summary of the Invention

[0004] Based on this, the present invention aims at the above-mentioned problems and proposes a display system and an achromatic lens combination thereof to solve the problems arising from the prior art.

[0005] The present invention provides a display system and an achromatic lens combination thereof to improve lateral chromatic aberration.

[0006] In one embodiment of the present invention, an achromatic lens assembly includes a first concave lens, a circular polarizer, and a magnifying convex lens assembly. The first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface facing each other, and the light-receiving surface is either flat or convex. The circular polarizer is disposed on the concave surface of the first concave lens, and the circular polarizer is curved to correspond to the concave surface. The magnifying convex lens assembly is attached to the circular polarizer with optical adhesive. The first concave lens, the circular polarizer, and the magnifying convex lens assembly are all arranged in sequence along the optical axis.

[0007] In one embodiment of the present invention, a display system includes a first concave lens, a circular polarizer, a magnifying convex lens combination, and a display module. The first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface are opposite to each other, and the light-receiving surface is a plane or a convex surface. The circular polarizer is arranged on the concave surface of the first concave lens, and the circular polarizer is curved corresponding to the concave surface. The magnifying convex lens combination is arranged on the circular polarizer with the aid of optical adhesive, wherein the first concave lens, the circular polarizer, and the magnifying convex lens combination are all arranged in sequence along the optical axis. The display surface of the display module faces the light-receiving surface of the first concave lens. The display module is used to emit non-polarized light to the light-receiving surface of the first concave lens, and the display module is located within the total effective focal length of the first concave lens, the circular polarizer, and the magnifying convex lens combination.

[0008] In one embodiment of the present invention, the circular polarizer includes a first linear polarizer and a first quarter-wave plate, which are stacked in sequence on the concave surface of a first concave lens. The first linear polarizer and the first quarter-wave plate are curved to correspond to the concave surface. The magnifying convex lens assembly is attached to the first quarter-wave plate using optical adhesive. The first concave lens, the first linear polarizer, the first quarter-wave plate, and the magnifying convex lens assembly are all arranged in sequence along the optical axis.

[0009] In one embodiment of the present invention, a magnifying convex lens assembly includes a first convex lens, a second quarter-wave plate, a reflective polarizer, a second linear polarizer, and a second convex lens. The first convex lens has a concave surface and a convex surface facing each other. The convex surface of the first convex lens is provided with a semi-transparent mirror. The convex surface of the first convex lens is attached to the first quarter-wave plate via optical adhesive and the semi-transparent mirror. The second quarter-wave plate, the reflective polarizer, and the second linear polarizer are stacked in sequence on the concave surface of the first convex lens. The second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved to correspond to the concave surface of the first convex lens. The second convex lens has a concave surface and a convex surface facing each other. The convex surface of the second convex lens is attached to the second linear polarizer via optical adhesive. The semi-transparent mirror, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer, and the second convex lens are all arranged in sequence along the optical axis.

[0010] In one embodiment of the present invention, the light-receiving surface of the first concave lens is further provided with an anti-reflection layer.

[0011] In one embodiment of the present invention, the display module is a liquid crystal on silicon display module, a digital light processing module or a micro light emitting diode display module.

[0012] In one embodiment of the present invention, an achromatic lens assembly includes a first concave lens, a circular polarizer, and a magnifying convex lens assembly. The first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface facing each other, and the light-receiving surface can be flat or convex. The circular polarizer is disposed on the light-receiving surface of the first concave lens. When the light-receiving surface is convex, the circular polarizer exhibits a curved shape corresponding to the convex surface. The magnifying convex lens assembly is attached to the concave surface of the first concave lens with optical adhesive. The circular polarizer, first concave lens, and magnifying convex lens assembly are all arranged in sequence along the optical axis.

[0013] In one embodiment of the present invention, a display system includes a first concave lens, a circular polarizer, a magnifying convex lens combination, and a display module. The first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface are opposite to each other, and the light-receiving surface is a plane or a convex surface. The circular polarizer is arranged on the light-receiving surface of the first concave lens. When the light-receiving surface is a convex surface, the circular polarizer is curved corresponding to the convex surface. The magnifying convex lens combination is arranged on the concave surface of the first concave lens with the aid of optical adhesive. The circular polarizer, the first concave lens, and the magnifying convex lens combination are all arranged in sequence along the optical axis. The display surface of the display module faces the circular polarizer. The display module is located within the total effective focal length of the first concave lens, the circular polarizer, and the magnifying convex lens combination, and the display module is used to emit non-polarized light to the circular polarizer.

[0014] In one embodiment of the present invention, the circular polarizer includes a first linear polarizer and a first quarter-wave plate. The first quarter-wave plate and the first linear polarizer are stacked in sequence on the light-receiving surface of a first concave lens. When the light-receiving surface is convex, the first linear polarizer and the first quarter-wave plate are curved to correspond to the convex surface. The first linear polarizer, the first quarter-wave plate, the first concave lens, and the magnifying convex lens assembly are all arranged in sequence along the optical axis.

[0015] In one embodiment of the present invention, the magnifying convex lens assembly includes a first convex lens, a second quarter-wave plate, a reflective polarizer, a second linear polarizer, and a second convex lens. The first convex lens has a concave surface and a convex surface opposite to each other. The convex surface of the first convex lens is provided with a semi-transparent mirror. The convex surface of the first convex lens is attached to the concave surface of the first concave lens with the aid of optical adhesive and the semi-transparent mirror. The second quarter-wave plate, the reflective polarizer, and the second linear polarizer are stacked in sequence on the concave surface of the first convex lens. The second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved to correspond to the concave surface of the first convex lens. The second convex lens has a concave surface and a convex surface opposite to each other. The convex surface of the second convex lens is attached to the second linear polarizer with the aid of optical adhesive. The semi-transparent mirror, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer, and the second convex lens are all arranged in sequence along the optical axis.

[0016] In one embodiment of the present invention, an anti-reflection layer is further provided between the light-receiving surface of the first concave lens and the circular polarizer.

[0017] In one embodiment of the present invention, the display module is a liquid crystal on silicon display module, a digital light processing module or a micro light emitting diode display module.

[0018] Based on the above display system and its achromatic lens combination combined with a concave lens and a magnifying convex lens combination, and utilizing the different positions of the concave surface of the concave lens to have different curvatures and different magnifications, the lateral chromatic aberration phenomenon is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of chromatic aberration of a general lens;

[0020] Figure 2 Schematic diagram of the achromatic phenomenon of the achromatic lens of the present invention;

[0021] Figure 3 is a schematic diagram of a display system according to a first embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of a display system according to a second embodiment of the present invention;

[0023] Figure 5 Field curvature diagrams of red, blue, and green light in the tangential and sagittal directions according to the second embodiment of the present invention;

[0024] Figure 6 2 are distortion diagrams of red, blue, and green light according to the second embodiment of the present invention;

[0025] Figure 7 is a graph showing the viewing angle and lateral chromatic aberration of red light and blue light according to the second embodiment of the present invention;

[0026] Figure 8 is a schematic diagram of the achromatic phenomenon of a display system according to a second embodiment of the present invention;

[0027] Figure 9 is a schematic diagram of a display system according to a third embodiment of the present invention;

[0028] Figure 10 FIG. 4 is a schematic diagram of a display system according to a fourth embodiment of the present invention.

[0029] Explanation of symbols:

[0030] 10. Lens

[0031] 11. Image Plane

[0032] 12. Achromatic lens

[0033] 120. Convex lens

[0034] 121. Concave lens

[0035] 2. Display system

[0036] 20. Achromatic lens combination

[0037] 200, First Concave Lens

[0038] 201. Circular polarizer

[0039] 2010, First linear polarizer

[0040] 2011, the first quarter-wave plate

[0041] 202. Optical adhesive

[0042] 203. Magnifying convex lens combination

[0043] 2030, First Convex Lens

[0044] 2031, half-transparent half-reflective mirror

[0045] 2032, Second Quarter Wave Plate

[0046] 2033, Reflective Polarizer

[0047] 2034, second linear polarizer

[0048] 2035, Optical Adhesive

[0049] 2036, Second Convex Lens

[0050] 204. Anti-reflection layer

[0051] 21. Display module DETAILED DESCRIPTION

[0052] The embodiments of the present invention are further explained below with reference to the accompanying drawings. Whenever possible, identical reference numerals will be used in the drawings and the specification to represent identical or similar components. In the drawings, shapes and thicknesses may be exaggerated for simplicity and convenience. It should be understood that components not specifically shown in the drawings or described in the specification are generally known to those skilled in the art. Those skilled in the art may make various changes and modifications based on the disclosure of the present invention.

[0053] When an element is referred to as being "on," it can mean that the element is directly on another element, or that there are other elements between the two elements. Conversely, when an element is referred to as being "directly on" another element, there cannot be other elements between the two elements. As used herein, the term "and / or" includes any combination of one or more of the listed associated items.

[0054] The description below of "one embodiment" or "an embodiment" refers to a specific component, structure, or feature associated with at least one embodiment. Therefore, multiple references to "one embodiment" or "an embodiment" below do not necessarily refer to the same embodiment. Furthermore, specific components, structures, and features in one or more embodiments may be combined in any suitable manner.

[0055] The disclosure is described with particular reference to the following examples, which are intended to be illustrative only. Various modifications and variations will readily occur to those skilled in the art without departing from the spirit and scope of the disclosure, and the scope of protection of the disclosure is to be determined by the appended claims. Throughout the specification and claims, unless the context clearly dictates otherwise, "a," "an," and "the" include references to "one or at least one" of the element or component. Furthermore, as used in the disclosure, the singular article includes references to plural elements or components unless the context clearly dictates otherwise. Furthermore, as used in this description and throughout the claims that follow, "in which" includes "in which" and "on which," unless the context clearly dictates otherwise. Terms used throughout the specification and claims generally have their ordinary meanings as used in the art, within the disclosure, and in the specific context, unless otherwise noted. Certain terms used to describe the present disclosure are discussed below and elsewhere in this specification to provide practitioners with additional guidance regarding the present disclosure. The use of examples anywhere throughout this specification, including examples of any terms discussed herein, is intended to be illustrative only and does not limit the scope or meaning of the present disclosure or any exemplified terms. Similarly, the present disclosure is not limited to the various embodiments set forth in this specification.

[0056] It should be understood that the terms "comprising," "including," "having," "containing," "involving," and the like as used herein are open-ended, meaning, including but not limited to, including. Furthermore, any embodiment or claim of the present invention does not necessarily achieve all of the objectives, advantages, or features disclosed herein. Furthermore, the abstract and title are intended solely to assist in searching patent documents and are not intended to limit the scope of the claims of the invention.

[0057] Unless otherwise specified, conditional clauses or words such as "can," "could," "might," or "may" are generally intended to indicate that an embodiment of the present invention has features, components, or steps, but may also be interpreted as not being required. In other embodiments, these features, components, or steps may not be required.

[0058] The following describes a display system and its achromatic lens combination, which combines a concave lens and a magnifying convex lens. Different positions of the concave surface of the concave lens have different curvatures and different magnifications to improve lateral chromatic aberration.

[0059] Figure 1 This is a schematic diagram of the chromatic aberration phenomenon of a general lens. Figure 1 Generally speaking, the lens 10 has different refractive indices for different colored lights. Figure 1 In the figure, red light is represented by a solid line, and blue light by a dashed line. When white light (represented by a bold line) is incident on lens 10, it is separated by lens 10 because of the different refractive indices of blue and red light. When the blue and red light travel from lens 10 toward image plane 11, they form blue and red regions in different areas of image plane 11. This phenomenon is known as dispersion or chromatic aberration. Figure 2 Schematic diagram of the achromatic phenomenon of the achromatic lens of the present invention. Figure 2 The achromatic lens 12 includes a convex lens 120 and a concave lens 121 bonded together. The convex lens 120 and the concave lens 121 have different optical properties and are made of glass. Furthermore, red light is represented by a solid line, and blue light is represented by a dashed line. When white light, represented by a bold line, is directed toward the achromatic lens 12, the achromatic lens 12 slightly separates the blue and red light. Because the convex lens 120 and the concave lens 121 have different optical properties, the blue and red light, after exiting the achromatic lens 12, are directed toward the same area of ​​the image plane 11, thereby avoiding dispersion or chromatic aberration. From a photochemical perspective, the achromatic lens 12 can eliminate the chromatic aberration between yellow light with a wavelength of 589.3 nanometers and violet light with a wavelength of 430.8 nanometers.

[0060] Figure 3 is a schematic diagram of a display system according to a first embodiment of the present invention. Figure 3The following describes a first embodiment of a display system 2. Display system 2 includes an achromatic dispersion lens assembly 20 and a display module 21. Display module 21 may be, but is not limited to, a liquid crystal on silicon (LCS) display module, a digital light processing module, or a micro-LED display module. Achromatic dispersion lens assembly 20 includes a first concave lens 200, a circular polarizer 201, optical adhesive 202, and a magnifying convex lens assembly 203. Optical adhesive 202 may be, but is not limited to, liquid optical adhesive. First concave lens 200 has a light-receiving surface and a concave surface, wherein the light-receiving surface and the concave surface are opposite to each other. In the first embodiment, the light-receiving surface is a plane, making first concave lens 200 a plano-concave lens. Circular polarizer 201 is disposed on the concave surface of first concave lens 200, wherein circular polarizer 201 is curved corresponding to the concave surface. Magnifying convex lens assembly 203 is attached to circular polarizer 201 via optical adhesive 202. The first concave lens 200, circular polarizer 201, and magnifying convex lens assembly 203 are all arranged in sequence along the optical axis, where the optical axis is represented by a dotted line. Because the circular polarizer 201 is curved to correspond to the concave surface, light leakage caused by axial misalignment between the circular polarizer 201 and the magnifying convex lens assembly 203 is avoided, thereby improving aberration and chromatic aberration. The display surface of the display module 21 faces the light-receiving surface of the first concave lens 200. The display module 21 does not include a polarizer. The display module 21 transmits unpolarized light to the light-receiving surface of the first concave lens 200. The display module 21 is located within the combined effective focal length of the first concave lens 200, the circular polarizer 201, and the magnifying convex lens assembly 203 to form a magnified virtual image. Because different locations on the concave surface of the first concave lens 200 have different curvatures and magnifications, and because the first concave lens 200 is combined with the magnifying convex lens assembly 203, the achromatic lens assembly 20 can improve lateral chromatic aberration. In addition, to enhance the imaging effect, the achromatic lens assembly 20 may further include an anti-reflection layer 204 disposed on the light-receiving surface of the first concave lens 200 .

[0061] In certain embodiments of the present invention, the circular polarizer 201 may include, but is not limited to, a first linear polarizer 2010 and a first quarter-wave plate 2011. The first linear polarizer 2010 and the first quarter-wave plate 2011 are stacked in sequence on the concave surface of the first concave lens 200. The first linear polarizer 2010 and the first quarter-wave plate 2011 are curved to correspond to the concave surface of the first concave lens 200. The magnifying convex lens assembly 203 is disposed on the first quarter-wave plate 2011 through the optical adhesive 202. The first concave lens 200, the first linear polarizer 2010, the first quarter-wave plate 2011, and the magnifying convex lens assembly 203 are all disposed in sequence along the optical axis.

[0062] The magnifying convex lens assembly 203 may include, but is not limited to, a first convex lens 2030, a half mirror lens 2031, a second quarter wave plate 2032, a reflective polarizer 2033, a second linear polarizer 2034, optical adhesive 2035, and a second convex lens 2036. The optical adhesive 2035 may be, but is not limited to, liquid optical adhesive. The first convex lens 2030 has a concave surface and a convex surface facing each other. The half mirror lens 2031 is disposed on the convex surface of the first convex lens 2030. The convex surface of the first convex lens 2030 is attached to the first quarter wave plate 2011 via the optical adhesive 202 and the half mirror lens 2031. The second quarter wave plate 2032, the reflective polarizer 2033, and the second linear polarizer 2034 are stacked in sequence on the concave surface of the first convex lens 2030. The second quarter-wave plate 2032, reflective polarizer 2033, and second linear polarizer 2034 are curved to correspond to the concave surface of the first convex lens 2030. Because the first quarter-wave plate 2011 is curved to correspond to the concave surface of the first concave lens 200, light leakage caused by axial misalignment between the first quarter-wave plate 2011 and the second quarter-wave plate 2032 is avoided, thereby improving aberration and chromatic aberration. The second convex lens 2036 has a concave surface and a convex surface that oppose each other. The convex surface of the second convex lens 2036 is attached to the second linear polarizer 2034 with the aid of optical adhesive 2035. The semi-transparent mirror 2031, first convex lens 2030, second quarter-wave plate 2032, reflective polarizer 2033, second linear polarizer 2034, and second convex lens 2036 are all arranged in sequence along the optical axis.

[0063] Figure 4 is a schematic diagram of a display system according to a second embodiment of the present invention. Figure 4 The following describes a second embodiment of the display system 2. The second embodiment differs from the first embodiment in the first concave lens 200. In the second embodiment, the first concave lens 200 is a convex-concave lens with a convex light-receiving surface. The curvature of the concave surface of the first concave lens 200 is greater than the curvature of the convex surface of the first concave lens 200. The remaining components of the second embodiment have been described in the first embodiment and will not be repeated here.

[0064] Figure 5 : is a field curvature diagram of red, blue and green light in the tangential and sagittal directions according to the second embodiment of the present invention. Figure 6 This is a distortion diagram of red, blue and green light according to the second embodiment of the present invention. Figure 5 In the figure, the dotted line represents the sagittal direction, and the solid line represents the meridian direction. Figure 5 and Figure 6 As shown in the figure, red, blue and green represent red, blue and green light respectively. Figure 5 and Figure 6 It can be seen that the aberration of the second embodiment of the display system is controlled within a reasonable range to ensure the imaging quality.

[0065] Figure 7 Graphs showing the field angle and lateral chromatic aberration of red light and blue light according to the second embodiment of the present invention are shown in FIG. Figure 7 In the figure, the solid line and the dotted line represent red light and blue light respectively. When the field angle of the magnifying convex lens combination of the present invention is 40 degrees, the lateral chromatic aberration of blue light and red light is -100 microns and -42 microns respectively. However, if Figure 7 As shown, the second embodiment of the display system of the present invention has a lateral chromatic aberration of -34.2 microns for blue light and -23 microns for red light at a viewing angle of 40 degrees. In other words, the second embodiment of the display system has a smaller lateral chromatic aberration than the magnifying convex lens combination. Figure 8 FIG. 1 is a schematic diagram of the achromatic phenomenon of the display system according to the second embodiment of the present invention. Figure 8 When the display module 21 emits unpolarized light represented by different color lines to the first concave lens 200 and the magnifying convex lens combination 203, the lateral chromatic aberration of each color light can be effectively reduced.

[0066] Figure 9FIG2 is a schematic diagram of a display system according to a third embodiment of the present invention. The following describes a third embodiment of a display system 2. Display system 2 includes an achromatic dispersion lens assembly 20 and a display module 21. Display module 21 may be, but is not limited to, a liquid crystal on silicon (LCS) display module, a digital light processing module, or a micro-LED display module. Achromatic dispersion lens assembly 20 includes a first concave lens 200, a circular polarizer 201, optical adhesive 202, and a magnifying convex lens assembly 203. Optical adhesive 202 may be, but is not limited to, liquid optical adhesive. First concave lens 200 has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface being opposite to each other. In the third embodiment, the light-receiving surface is a plane, making first concave lens 200 a plano-concave lens. Circular polarizer 201 is disposed on the light-receiving surface of first concave lens 200. A magnifying convex lens assembly 203 is disposed on the concave surface of first concave lens 200 with the aid of optical adhesive 202. The circular polarizer 201, the first concave lens 200, and the magnifying convex lens assembly 203 are all arranged in sequence along the optical axis, where the optical axis is represented by a dotted line. The display surface of the display module 21 faces the circular polarizer 201. The display module 21 does not include a polarizer. The display module 21 transmits unpolarized light to the circular polarizer 201. The display module 21 is located within the total effective focal length of the first concave lens 200, the circular polarizer 201, and the magnifying convex lens assembly 203 to form a magnified virtual image. Because different positions of the concave surface of the first concave lens 200 have different curvatures and different magnifications, and the first concave lens 200 is combined with the magnifying convex lens assembly 203, the achromatic lens assembly 20 can improve lateral chromatic aberration. In addition, to enhance the imaging effect, the achromatic lens assembly 20 may further include an anti-reflection layer 204, which is disposed between the light-receiving surface of the first concave lens 200 and the circular polarizer 201.

[0067] In certain embodiments of the present invention, the circular polarizer 201 may include, but is not limited to, a first linear polarizer 2010 and a first quarter-wave plate 2011. The first quarter-wave plate 2011 and the first linear polarizer 2010 are sequentially stacked on the light-receiving surface of the first concave lens 200. The first linear polarizer 2010 and the first quarter-wave plate 2011 are curved to correspond to the concave surface of the first concave lens 200. The magnifying convex lens assembly 203 is attached to the first quarter-wave plate 2011 with the aid of optical adhesive 202. The first linear polarizer 2010, the first quarter-wave plate 2011, the first concave lens 200, and the magnifying convex lens assembly 203 are all sequentially arranged along the optical axis.

[0068] The magnifying convex lens assembly 203 may include, but is not limited to, a first convex lens 2030, a half mirror 2031, a second quarter wave plate 2032, a reflective polarizer 2033, a second linear polarizer 2034, optical adhesive 2035, and a second convex lens 2036. The optical adhesive 2035 may be, but is not limited to, liquid optical adhesive. The first convex lens 2030 has a concave surface and a convex surface facing each other. The half mirror 2031 is disposed on the convex surface of the first convex lens 2030. The convex surface of the first convex lens 2030 is attached to the concave surface of the first concave lens 200 via the optical adhesive 202 and the half mirror 2031. The second quarter wave plate 2032, the reflective polarizer 2033, and the second linear polarizer 2034 are stacked in sequence on the concave surface of the first convex lens 2030. The second quarter-wave plate 2032, reflective polarizer 2033, and second linear polarizer 2034 are curved to correspond to the concave surface of the first convex lens 2030. The second convex lens 2036 has a concave surface and a convex surface that oppose each other. The convex surface of the second convex lens 2036 is attached to the second linear polarizer 2034 with the aid of optical adhesive 2035. The semi-transparent mirror 2031, first convex lens 2030, second quarter-wave plate 2032, reflective polarizer 2033, second linear polarizer 2034, and second convex lens 2036 are all arranged in sequence along the optical axis.

[0069] Figure 10 FIG4 is a schematic diagram of a display system according to a fourth embodiment of the present invention. Figure 10 The following describes a fourth embodiment of the display system 2. The fourth embodiment differs from the third embodiment in the first concave lens 200. In the fourth embodiment, the first concave lens 200 is a convex-concave lens, with the light-receiving surface of the first concave lens 200 being convex. The curvature of the concave surface of the first concave lens 200 is greater than the curvature of the convex surface of the first concave lens 200. The first linear polarizer 2010 and the first quarter-wave plate 2011 of the circular polarizer 201 are both curved to correspond to the convex surface of the first concave lens 200. The remaining components of the fourth embodiment have been described in the third embodiment and will not be repeated here. Because the first quarter-wave plate 2011 is curved to correspond to the convex surface of the first concave lens 200, light leakage caused by axial misalignment between the first quarter-wave plate 2011 and the second quarter-wave plate 2032 is avoided, thereby improving image aberration and chromatic aberration.

[0070] According to the above embodiment, the display system and the achromatic lens combination thereof are combined with a concave lens and a magnifying convex lens to improve the lateral chromatic aberration phenomenon.

[0071] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An achromatic lens assembly, characterized in that: include: A first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface are opposite to each other, and the light-receiving surface is a flat surface or a convex surface; a circular polarizer, disposed on the concave surface of the first concave lens, the circular polarizer being curved corresponding to the concave surface; as well as A magnifying convex lens assembly is mounted on the circular polarizer by means of optical adhesive, wherein the first concave lens, the circular polarizer, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; wherein the circular polarizer comprises a first linear polarizer and a first quarter-wave plate, and the first linear polarizer and the first quarter-wave plate are sequentially stacked on the concave surface of the first concave lens; The first linear polarizer and the first quarter-wave plate are curved corresponding to the concave surface, the magnifying convex lens assembly is mounted on the first quarter-wave plate by means of the optical adhesive, and the first concave lens, the first linear polarizer, the first quarter-wave plate, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; The magnifying convex lens combination comprises: a first convex lens having a concave surface and a convex surface opposite to each other, the convex surface of the first convex lens being provided with a semi-transparent and semi-reflective mirror, the convex surface of the first convex lens being provided on the first quarter-wave plate by means of the optical adhesive and the semi-transparent and semi-reflective mirror; A second quarter-wave plate, a reflective polarizer, and a second linear polarizer are stacked in sequence on the concave surface of the first convex lens, wherein the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved to correspond to the concave surface of the first convex lens; and The second convex lens has a concave surface and a convex surface opposite to each other. The convex surface of the second convex lens is mounted on the second linear polarizer by optical adhesive. The semi-transparent and semi-reflective mirror, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer and the second convex lens are all arranged in sequence along the optical axis.

2. The achromatic lens assembly according to claim 1, wherein: The light-receiving surface of the first concave lens is further provided with an anti-reflection layer.

3. The achromatic lens assembly according to claim 1, wherein: The light-receiving surface of the first concave lens faces the display surface of the display module. The display module is located within the total effective focal length of the combination of the first concave lens, the circular polarizer and the magnifying convex lens. The display module is used to emit non-polarized light to the light-receiving surface of the first concave lens.

4. The achromatic lens assembly according to claim 3, wherein: The display module is a liquid crystal on silicon display module, a digital light processing module or a micro light emitting diode display module.

5. An achromatic lens assembly, characterized in that: include: A first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface are opposite to each other, and the light-receiving surface is a flat surface or a convex surface; a circular polarizer disposed on the light-receiving surface of the first concave lens, wherein when the light-receiving surface is the convex surface, the circular polarizer is curved to correspond to the convex surface; and a magnifying convex lens assembly, mounted on the concave surface of the first concave lens by means of optical adhesive, wherein the circular polarizer, the first concave lens, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; The circular polarizer includes a first linear polarizer and a first quarter-wave plate, and the first linear polarizer and the first quarter-wave plate are sequentially stacked on the light-receiving surface of the first concave lens; When the light-receiving surface is the convex surface, the first linear polarizer and the first quarter-wave plate are curved corresponding to the convex surface, and the first linear polarizer, the first quarter-wave plate, the first concave lens, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; The magnifying convex lens combination comprises: a first convex lens having a concave surface and a convex surface facing each other, the convex surface of the first convex lens being provided with a semi-transparent and semi-reflective mirror, the convex surface of the first convex lens being provided on the concave surface of the first concave lens by means of the optical adhesive and the semi-transparent and semi-reflective mirror; A second quarter-wave plate, a reflective polarizer, and a second linear polarizer are stacked in sequence on the concave surface of the first convex lens, wherein the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved to correspond to the concave surface of the first convex lens; and The second convex lens has a concave surface and a convex surface opposite to each other. The convex surface of the second convex lens is mounted on the second linear polarizer by optical adhesive. The semi-transparent and semi-reflective mirror, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer and the second convex lens are all arranged in sequence along the optical axis.

6. The achromatic lens assembly according to claim 5, characterized in that: An anti-reflection layer is further provided between the light-receiving surface of the first concave lens and the circular polarizer.

7. The achromatic lens assembly according to claim 5, characterized in that: The circular polarizer faces the display surface of the display module. The display module is located within the total effective focal length of the circular polarizer, the first concave lens and the magnifying convex lens. The display module is used to emit unpolarized light to the circular polarizer.

8. The achromatic lens assembly according to claim 7, wherein: The display module is a liquid crystal on silicon display module, a digital light processing module or a micro light emitting diode display module.

9. A display system, characterized in that: include: A first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface are opposite to each other, and the light-receiving surface is a flat surface or a convex surface; a circular polarizer, disposed on the concave surface of the first concave lens, the circular polarizer being curved corresponding to the concave surface; A magnifying convex lens assembly is mounted on the circular polarizer by means of optical adhesive, wherein the first concave lens, the circular polarizer, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; as well as a display module, wherein a display surface of the display module faces the light-receiving surface of the first concave lens, the display module is configured to emit unpolarized light to the light-receiving surface of the first concave lens, and the display module is located within a total effective focal length of the combination of the first concave lens, the circular polarizer, and the magnifying convex lens; The circular polarizer includes a first linear polarizer and a first quarter-wave plate, wherein the first linear polarizer and the first quarter-wave plate are sequentially stacked on the concave surface of the first concave lens; The first linear polarizer and the first quarter-wave plate are curved corresponding to the concave surface, the magnifying convex lens assembly is mounted on the first quarter-wave plate by means of the optical adhesive, and the first concave lens, the first linear polarizer, the first quarter-wave plate, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; The magnifying convex lens combination comprises: a first convex lens having a concave surface and a convex surface opposite to each other, the convex surface of the first convex lens being provided with a semi-transparent and semi-reflective mirror, the convex surface of the first convex lens being provided on the first quarter-wave plate by means of the optical adhesive and the semi-transparent and semi-reflective mirror; A second quarter-wave plate, a reflective polarizer, and a second linear polarizer are stacked in sequence on the concave surface of the first convex lens, wherein the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved to correspond to the concave surface of the first convex lens; and The second convex lens has a concave surface and a convex surface opposite to each other. The convex surface of the second convex lens is mounted on the second linear polarizer by optical adhesive. The semi-transparent and semi-reflective mirror, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer and the second convex lens are all arranged in sequence along the optical axis.

10. The display system according to claim 9, wherein: The light-receiving surface of the first concave lens is further provided with an anti-reflection layer.

11. The display system according to claim 9, wherein: The display module is a liquid crystal on silicon display module, a digital light processing module or a micro light emitting diode display module.

12. A display system, characterized in that: include: A first concave lens has a light-receiving surface and a concave surface, the light-receiving surface and the concave surface are opposite to each other, and the light-receiving surface is a flat surface or a convex surface; a circular polarizer, provided on the light-receiving surface of the first concave lens, wherein when the light-receiving surface is the convex surface, the circular polarizer is curved corresponding to the convex surface; a magnifying convex lens assembly, mounted on the concave surface of the first concave lens by means of optical adhesive, wherein the circular polarizer, the first concave lens, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; as well as a display module, wherein a display surface of the display module faces the circular polarizer, the display module is located within a total effective focal length of the combination of the first concave lens, the circular polarizer, and the magnifying convex lens, and the display module is configured to emit unpolarized light to the circular polarizer; The circular polarizer includes a first linear polarizer and a first quarter-wave plate, and the first linear polarizer and the first quarter-wave plate are sequentially stacked on the light-receiving surface of the first concave lens; When the light-receiving surface is the convex surface, the first linear polarizer and the first quarter-wave plate are curved corresponding to the convex surface, and the first linear polarizer, the first quarter-wave plate, the first concave lens, and the magnifying convex lens assembly are all arranged in sequence along the optical axis; The magnifying convex lens combination comprises: a first convex lens having a concave surface and a convex surface facing each other, the convex surface of the first convex lens being provided with a semi-transparent and semi-reflective mirror, the convex surface of the first convex lens being provided on the concave surface of the first concave lens by means of the optical adhesive and the semi-transparent and semi-reflective mirror; A second quarter-wave plate, a reflective polarizer, and a second linear polarizer are stacked in sequence on the concave surface of the first convex lens, wherein the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved to correspond to the concave surface of the first convex lens; and The second convex lens has a concave surface and a convex surface opposite to each other. The convex surface of the second convex lens is mounted on the second linear polarizer by optical adhesive. The semi-transparent and semi-reflective mirror, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer and the second convex lens are all arranged in sequence along the optical axis.

13. The display system according to claim 12, wherein: An anti-reflection layer is further provided between the light-receiving surface of the first concave lens and the circular polarizer.

14. The display system according to claim 12, wherein: The display module is a liquid crystal on silicon display module, a digital light processing module or a micro light emitting diode display module.

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