Display system and lens assembly for eliminating color dispersion

Abstract

The present invention provides a display system for improving the phenomenon of lateral chromatic aberration and a lens assembly for eliminating chromatic dispersion. [Solution] The lens assembly for removing color dispersion of the present invention 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 face each other, and the light receiving surface is flat or convex. The circular polarizer is provided on the concave surface of the first concave lens, and the circular polarizer is curved corresponding to the concave surface. The magnifying convex lens assembly is provided on the circular polarizer via an optical adhesive, and the first concave lens, the circular polarizer, and the magnifying convex lens assembly are all installed in this order along the optical axis. When the light receiving surface is a convex surface, the circular polarizer is provided on the light receiving surface and therefore curved corresponding to the convex surface, and the circular polarizer, the first concave lens, and the magnifying convex lens assembly are all installed in this order along the optical axis.

Description

[Technical Field]

[0001] The present invention relates to display technology, and more particularly to a display system and a lens assembly for eliminating color dispersion. [Background technology]

[0002] Pancake optical systems are designed based on the principle of polarization. A reflective polarizer selectively reflects and reflects different polarized light. A quarter-wave plate, which creates a quarter-wave phase difference, is added to adjust the polarization. Light is reflected back and forth between a half-mirror lens and the reflective polarizer, and finally transmitted through the reflective polarizer. After passing through the quarter-wave plate, circularly polarized light becomes linearly polarized and is reflected by the reflective polarizer. It then passes through the quarter-wave plate a second time, becoming circularly polarized and reflected by the half-mirror lens. The circularly polarized light then passes through the quarter-wave plate a third time, becoming linearly polarized again. This time, the light is rotated 90 degrees compared to the first time, allowing it to pass through the reflective polarizer and complete the image capture.

[0003] Pancake optics is a combination of lenses, and focal length is typically adjusted by controlling the position of one of the lenses. For nearsighted users, adjusting focal length when wearing a conventional VR (virtual reality) head-mounted display is often done by changing lenses, which is tedious and limits focal length options. Upgrading the optics to pancake technology increases the number of focal length adjustment methods and makes it more convenient. Pancake optics generally consist of multiple lenses, so moving one lens adjusts the refractive index of the entire optical module to meet focusing needs. This method is not possible with conventional lenses or Fresnel lenses. However, because color dispersion is related to the wavelength of light, combinations of conventional lenses, Fresnel lenses, and pancake lenses all suffer from color dispersion. The focal length of a lens changes with the wavelength of light, causing longitudinal color dispersion. The magnification of a lens is related to the wavelength of light, causing transverse color dispersion. Therefore, it is impossible to completely eliminate color dispersion from a lens.

[0004] Therefore, the present invention proposes a display system and a lens assembly for eliminating color dispersion to solve the above-mentioned problems. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention provides a display system and a lens assembly for eliminating color dispersion to improve the phenomenon of lateral chromatic aberration. [Means for solving the problem]

[0006] In one embodiment of the present invention, the lens assembly for eliminating color dispersion 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 flat or convex. The circular polarizer is mounted on the concave surface of the first concave lens, and the circular polarizer has a curved shape corresponding to the concave surface. The magnifying convex lens assembly is mounted on the circular polarizer via an optical adhesive, and the first concave lens, the circular polarizer, and the magnifying convex lens assembly are all installed in this order 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 assembly, and a display module. The first concave lens has a light-receiving surface and a concave surface, which face each other, and the light-receiving surface can be flat or convex. The circular polarizer is mounted on the concave surface of the first concave lens, and the circular polarizer has a curved shape corresponding to the concave surface. The magnifying convex lens assembly is mounted on the circular polarizer via an optical adhesive, and the first concave lens, circular polarizer, and magnifying convex lens assembly are all installed in this order along the optical axis. The display surface of the display module faces the light-receiving surface of the first concave lens. The display module emits unpolarized 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, circular polarizer, and magnifying convex lens assembly.

[0008] In one embodiment of the present invention, the polarizing plate includes a first linear polarizing plate and a first quarter-wave plate, the first linear polarizing plate and the first quarter-wave plate are curved to correspond to the concave surface, the magnifying convex lens assembly is mounted on the first quarter-wave plate via an optical adhesive, and the first concave lens, the first linear polarizing plate, the first quarter-wave plate and the magnifying convex lens assembly are all arranged in this order along the optical axis.

[0009] 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 opposing concave and convex surfaces. A half-mirror lens is attached to the convex surface of the first convex lens, and the convex surface of the first convex lens is attached to the first quarter-wave plate via an optical adhesive and the half-mirror lens. The second quarter-wave plate, reflective polarizer, and second linear polarizer are stacked in this order on the concave surface of the first convex lens, and the second quarter-wave plate, reflective polarizer, and second linear polarizer are curved corresponding to the concave surface of the first convex lens. The second convex lens has opposing concave and convex surfaces. The convex surface of the second convex lens is attached to the second linear polarizer via an optical adhesive. The half-mirror lens, first convex lens, second quarter-wave plate, reflective polarizer, second linear polarizer, and second convex lens are all arranged in this order along the optical axis.

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

[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 LED display module.

[0012] In one embodiment of the present invention, the lens assembly for eliminating color dispersion 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, which face each other, and the light-receiving surface is flat or convex. The circular polarizer is disposed on the light-receiving surface of the first concave lens, and when the light-receiving surface is convex, the circular polarizer has a curved shape corresponding to the convex surface. The magnifying convex lens assembly is disposed on the concave surface of the first concave lens via an optical adhesive, and the circular polarizer, first concave lens, and magnifying convex lens assembly are all arranged in this order 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 assembly, and a display module. The first concave lens has a light-receiving surface and a concave surface, which face each other, and the light-receiving surface can be flat or convex. A circular polarizer is mounted on the light-receiving surface of the first concave lens. When the light-receiving surface is convex, the circular polarizer has a corresponding curved shape. The magnifying convex lens assembly is mounted on the concave surface of the first concave lens via an optical adhesive, and the circular polarizer, first concave lens, and magnifying convex lens assembly are all arranged in this order 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 assembly, and the display module is used to emit unpolarized 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, which are stacked in this order on the light-receiving surface of the first concave lens, and when the light-receiving surface is the convex surface, the first linear polarizer and the first quarter-wave plate are curved to correspond to the convex surface, and the first linear polarizer, first quarter-wave plate, first concave lens, and magnifying convex lens assembly are all arranged in this order 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 opposing concave and convex surfaces. A half mirror lens is attached to the convex surface of the first convex lens, and the convex surface of the first convex lens is attached to the concave surface of the first concave lens via an optical adhesive and the half mirror lens. The second quarter-wave plate, the reflective polarizer, and the second linear polarizer are stacked in this order on the concave surface of the first convex lens, and the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved corresponding to the concave surface of the first convex lens. The second convex lens has opposing concave and convex surfaces. The convex surface of the second convex lens is attached to the second linear polarizer via an optical adhesive, and the half mirror lens, first convex lens, second quarter-wave plate, reflective polarizer, second linear polarizer, and second convex lens are all arranged in this order 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 LED display module. [Effects of the Invention]

[0018] Based on the above, the display system and the lens assembly for eliminating color dispersion combine a concave lens and a magnifying convex lens assembly, and utilize the fact that different positions on the concave surface of the concave lens have different curvatures and magnifications to improve the transverse chromatic aberration phenomenon. [Brief explanation of the drawings]

[0019] For a better understanding and appreciation of the structural features and the effects achieved by the present invention, the following detailed description is given in conjunction with drawings of preferred embodiments.

[0020] [Figure 1] 1 is a diagram illustrating the chromatic aberration phenomenon of a general lens. [Figure 2] FIG. 1 illustrates the elimination of chromatic aberration phenomena by an achromatic lens of the present invention. [Figure 3] 1 is a diagram showing a display system according to a first embodiment of the present invention. [Figure 4] FIG. 10 is a diagram showing a display system according to a second embodiment of the present invention. [Figure 5A] 10A and 10B are field curvature diagrams of red light in the tangential and sagittal directions in the second embodiment of the present invention. [Figure 5B] 10A and 10B are diagrams illustrating field curvature in the tangential and sagittal directions for blue light in the second embodiment of the present invention. [Figure 5C] 10A and 10B are diagrams illustrating field curvature in the tangential and sagittal directions for green light in the second embodiment of the present invention. [Figure 6A] FIG. 10 is a diagram illustrating distortion of red light in the second embodiment of the present invention. [Figure 6B] FIG. 10 is a diagram illustrating distortion of blue light in the second embodiment of the present invention. [Figure 6C] FIG. 10 is a diagram illustrating distortion of green light in the second embodiment of the present invention. [Figure 7] FIG. 10 is a curve diagram of the field angle and lateral chromatic aberration for red and blue light in the second embodiment of the present invention. [Figure 8] FIG. 10 illustrates the elimination of chromatic aberration phenomena by a display system according to a second embodiment of the present invention. [Figure 9] FIG. 10 is a diagram showing a display system according to a third embodiment of the present invention. [Figure 10] FIG. 10 is a diagram showing a display system according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Embodiments of the present invention are further described below with reference to the relevant drawings. In the drawings and the specification, the same reference numerals are used to denote the same or similar components whenever possible. In the drawings, shapes and thicknesses may be exaggerated for clarity and convenience. Elements not specifically shown in the drawings or described in the specification may be understood to be in a form known to those skilled in the art. Those skilled in the art will be able to make various changes and modifications based on the contents of the present invention.

[0022] When an element is described as being "on" another element, this generally refers to the element being directly on the other element, and other elements may be present between the two elements. In contrast, when an element is described as being "directly" on another element, no other elements may be present between the two elements. As used herein, "and / or" includes any combination of one or more of the associated listed items.

[0023] In the following text, the references to "one embodiment" or "an embodiment" refer to a particular element, structure, or feature associated with at least one embodiment. Thus, the references to "an embodiment" or "an embodiment" in various places in the following text do not refer to the same embodiment. Furthermore, particular elements, structures, and features in one or more embodiments may be combined in any suitable manner.

[0024] Specific examples are provided below for illustrative purposes only. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present disclosure. The scope of protection of the present disclosure is determined by the content specified in the claims. In this specification and claims, unless otherwise clearly specified, the terms "a" and "the" include the meaning of "one or at least one." Also, as in this disclosure, the singular "a," "an," or "the" may include the meaning of "wherein" and "therein," unless otherwise clearly specified in the content of the specification and claims. Terms used in this specification and claims have the same meaning as those commonly used in the art, the content of this disclosure, and the specific context, unless otherwise clearly specified. Terms used to describe the present disclosure are explained in the following paragraphs or elsewhere in the specification to help practitioners of the art understand the description of the present disclosure more clearly. Any examples of any portion of this specification include exemplary use of the terms described herein, and these examples are used for illustrative purposes only and do not limit the scope or meaning of the disclosure or any exemplified term. Likewise, the disclosure is not limited to the various embodiments suggested herein.

[0025] As used herein, the terms "comprise," "have," "comprise," "contain," and the like are open-ended, i.e., they are understood to mean including but not limited to. Also, it is not necessary for any embodiment or claim of the present invention to achieve all of the objects, advantages, or features disclosed in the present invention. Furthermore, the abstract and titles are intended only as an aid in searching the patent document and are not intended to limit the scope of the claims of the present invention.

[0026] Unless otherwise specified, certain conditional phrases or words, such as "can," "may," "might," or "may," may also be interpreted as referring to features, elements, or steps that may be described in embodiments of the invention but may be unnecessary. In other embodiments, these features, elements, or steps may be unnecessary.

[0027] The following describes a display system and a lens assembly for eliminating color dispersion, which combines a concave lens and a magnifying convex lens assembly and utilizes the different curvatures and magnifications at different positions on the concave surface of the concave lens to improve the phenomenon of lateral chromatic aberration.

[0028] FIG. 1 illustrates the chromatic aberration phenomenon of a typical lens. Referring to FIG. 1, a lens 10 generally has different refractive indices for different colors of light. In FIG. 1, 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 emitted toward the lens 10, the blue and red lights correspond to different refractive indices, and are separated by the lens 10. When blue and red lights are emitted from the lens 10 toward an image plane 11, blue and red regions are formed in different regions of the image plane 11. This is the chromatic dispersion phenomenon or chromatic aberration phenomenon. FIG. 2 illustrates the elimination of chromatic aberration by the achromatic lens of the present invention. Referring to FIG. 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 the bold line, is emitted toward the achromatic lens 12, the blue and red lights are slightly separated by the achromatic lens 12. Because the convex lens 120 and the concave lens 121 have different optical properties, when the blue and red lights are emitted from the achromatic lens 12 toward the image plane 11, they are irradiated onto the same area on the image plane 11, thereby avoiding color dispersion and chromatic aberration. From a photochemical perspective, the achromatic lens 12 can eliminate chromatic aberrations of yellow light with a wavelength of 589.3 nm and violet light with a wavelength of 430.8 nm.

[0029] FIG. 3 is a diagram illustrating a display system according to a first embodiment of the present invention. A first embodiment of the display system 2 will be introduced below, so please refer to FIG. 3. The display system 2 includes a color dispersion eliminating lens assembly 20 and a display module 21. The display module 21 may be, but is not limited to, a liquid crystal on silicon display module, a digital light processing module, or a micro LED display module. The color dispersion eliminating lens assembly 20 includes a first concave lens 200, a circular polarizer 201, an optical adhesive 202, and a magnifying convex lens assembly 203. The optical adhesive 202 may be, but is not limited to, a liquid optical adhesive. The first concave lens 200 has a light-receiving surface and a concave surface, and the light-receiving surface and the concave surface face each other. In the first embodiment, a flat light-receiving surface is used as an example, and the first concave lens 200 is a plano-concave lens. The circular polarizer 201 is disposed on the concave surface of the first concave lens 200, and the circular polarizer 201 is curved to correspond to the concave surface. The magnifying convex lens assembly 203 is mounted on the circular polarizer 201 via an optical adhesive 202. The first concave lens 200, the circular polarizer 201, and the magnifying convex lens assembly 203 are all arranged in this order along the optical axis, which is represented by the dashed line. The circular polarizer 201 is curved to correspond to the concave surface, thereby avoiding light leakage due to axial misalignment between the circular polarizer 201 and the magnifying convex lens assembly 203 and improving optical and chromatic aberrations. 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 emits unpolarized light to the light-receiving surface of the first concave lens 200. A magnified virtual image is formed when the display module 21 is positioned within the total effective focal length of the first concave lens 200, the circular polarizer 201, and the magnifying convex lens assembly 203. Different positions on the concave surface of the first concave lens 200 have different curvatures and magnifications, and the first concave lens 200 is combined with the magnifying convex lens assembly 203, so that the chromatic dispersion eliminating lens assembly 20 can improve lateral chromatic aberration. In addition, in order to improve the imaging effect, the chromatic dispersion eliminating lens assembly 20 can also include an anti-reflection layer 204 provided on the light-receiving surface of the first concave lens 200.

[0030] In some embodiments of the present invention, the circular polarizer 201 can 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 this order on the concave surface of the first concave lens 200, and 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 mounted on the first quarter-wave plate 2011 via an optical adhesive 202, and 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 arranged in this order along the optical axis.

[0031] The magnifying convex lens assembly 203 includes, 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, an optical adhesive 2035, and a second convex lens 2036. The optical adhesive 2035 may be, but is not limited to, a liquid optical adhesive. The first convex lens 2030 has a concave surface and a convex surface facing each other, and a half mirror lens 2031 is provided on the convex surface of the first convex lens 2030. The convex surface of the first convex lens 2030 is provided on 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 this order on the concave surface of the first convex lens 2030, and the second quarter-wave plate 2032, the reflective polarizer 2033, and the second linear polarizer 2034 are curved to correspond to the concave surface of the first convex lens 2030. Since the first quarter-wave plate 2011 is curved to correspond to the concave surface of the first concave lens 200, light leakage due to axial misalignment between the first quarter-wave plate 2011 and the second quarter-wave plate 2032 can be avoided and optical aberrations and chromatic aberrations can be improved. The second convex lens 2036 has a concave surface and a convex surface facing each other. The convex surface of the second convex lens 2036 is mounted on the second linear polarizer 2034 via an optical adhesive 2035, and the half mirror lens 2031, the first convex lens 2030, the second quarter-wave plate 2032, the reflective polarizer 2033, the second linear polarizer 2034 and the second convex lens 2036 are all arranged in this order along the optical axis.

[0032] FIG. 4 is a diagram showing a display system according to a second embodiment of the present invention. The second embodiment of the display system 2 will be introduced below, so please refer to FIG. 4. The difference between the second embodiment and the first embodiment lies in the first concave lens 200. In the second embodiment, the first concave lens 200 is a convex-concave lens, and its light-receiving surface is a convex 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 other components of the second embodiment have been introduced in the first embodiment, so they will not be described again here.

[0033] FIG. 5A is a diagram of field curvature in the tangential and sagittal directions for red light in the second embodiment of the present invention. FIG. 5B is a diagram of field curvature in the tangential and sagittal directions for blue light in the second embodiment of the present invention. FIG. 5C is a diagram of field curvature in the tangential and sagittal directions for green light in the second embodiment of the present invention. FIG. 6A is a diagram of distortion aberration for red light in the second embodiment of the present invention. FIG. 6B is a diagram of distortion aberration for blue light in the second embodiment of the present invention. FIG. 6C is a diagram of distortion aberration for green light in the second embodiment of the present invention. In FIGS. 5A to 5C, the dashed line represents the sagittal direction, and the solid line represents the tangential direction. As can be seen from FIGS. 5A to 5C and 6A to 6C, the optical aberration of the display system in the second embodiment is controlled within an appropriate range, ensuring imaging quality.

[0034] FIG. 7 is a curve diagram of the field angle and lateral chromatic aberration of red and blue light in the second embodiment of the present invention. In FIG. 7, the solid line represents red light, and the dashed line represents blue light. When the field angle of the magnifying convex lens assembly of the present invention is 40 degrees, the lateral chromatic aberration of blue light is -100 μm, and the lateral chromatic aberration of red light is -42 μm. However, as shown in FIG. 7, when the field angle of the display system in the second embodiment is 40 degrees, the lateral chromatic aberration of blue light is -34.2 μm, and the lateral chromatic aberration of red light is -23 μm. In other words, the lateral chromatic aberration of the display system in the second embodiment is smaller than that of the magnifying convex lens assembly. FIG. 8 is a diagram illustrating the elimination of chromatic aberration by the display system in the second embodiment of the present invention. The different types of lines shown in FIG. 8 represent light of different colors. When the display module 21 emits unpolarized light represented by different lines toward the first concave lens 200 and the magnifying convex lens assembly 203, the transverse chromatic aberration of various lights can be effectively reduced.

[0035] FIG. 9 illustrates a display system according to a third embodiment of the present invention. A display system 2 according to the third embodiment is described below. The display system 2 includes a color dispersion elimination lens assembly 20 and a display module 21. The display module 21 may be, but is not limited to, a liquid crystal-on-silicon display module, a digital light processing module, or a micro LED display module. The color dispersion elimination lens assembly 20 includes a first concave lens 200, a circular polarizer 201, an optical adhesive 202, and a magnifying convex lens assembly 203. The optical adhesive 202 may be, but is not limited to, a liquid optical adhesive. The first concave lens 200 has a light-receiving surface and a concave surface, which face each other. In the third embodiment, a flat light-receiving surface is used as an example, and the first concave lens 200 is a plano-concave lens. The circular polarizer 201 is disposed on the light-receiving surface of the first concave lens 200. The circular polarizer 201, the first concave lens 200, and the magnifying convex lens assembly 203 are all arranged in this order along an optical axis, which is represented by a dashed 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 emits unpolarized light toward the polarizer 201. The display module 21 is positioned within the total effective focal length of the first concave lens 200, the circular polarizer 201, and the magnifying convex lens assembly 203, thereby forming a magnified virtual image. Different positions on the concave surface of the first concave lens 200 have different curvatures and magnifications. The first concave lens 200, combined with the magnifying convex lens assembly 203, allows the chromatic dispersion eliminating lens assembly 20 to improve lateral chromatic aberration. To improve imaging efficiency, the chromatic dispersion eliminating lens assembly 20 may further include an anti-reflection layer 204 disposed between the light-receiving surface of the first concave lens 200 and the circular polarizer 201.

[0036] In some 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 stacked in this order on the light-receiving surface of the first concave lens 200, and 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 via an optical adhesive 202, and 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 arranged in this order along the optical axis.

[0037] The magnifying convex lens assembly 203 includes, 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, an optical adhesive 2035, and a second convex lens 2036. The optical adhesive 2035 may be, but is not limited to, a liquid optical adhesive. The first convex lens 2030 has a concave surface and a convex surface facing each other, and a half mirror lens 2031 is provided on the convex surface of the first convex lens 2030, and the convex surface of the first convex lens 2030 is provided on the concave surface of the first concave lens 200 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 laminated in this order on the concave surface of the first convex lens 2030, and the second quarter-wave plate 2032, the reflective polarizer 2033, and the 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 facing each other. The convex surface of the second convex lens 2036 is attached to the second linear polarizer 2034 via an optical adhesive 2035, and the half-mirror lens 2031, the first convex lens 2030, the second quarter-wave plate 2032, the reflective polarizer 2033, the second linear polarizer 2034, and the second convex lens 2036 are all arranged in this order along the optical axis.

[0038] FIG. 10 is a diagram showing a display system according to a fourth embodiment of the present invention. A display system 2 according to the fourth embodiment will be described below, so please refer to FIG. 10. 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, and its light-receiving surface is 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 other components of the fourth embodiment were introduced in the third embodiment and will not be described again here. Because the first quarter-wave plate 2011 is curved to correspond to the convex surface of the first concave lens 200, light leakage due to axial misalignment between the first quarter-wave plate 2011 and the second quarter-wave plate 2032 can be avoided, and optical aberrations and chromatic aberrations can be improved.

[0039] According to the above-described embodiment, the display system and the lens assembly for eliminating color dispersion improve the transverse chromatic aberration phenomenon by combining a concave lens and a magnifying convex lens assembly.

[0040] The above description is merely an explanation of the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, all equivalent changes and modifications based on the shape, structure, features, and spirit described in the claims of the present invention are included within the scope of the claims of the present invention. [Explanation of symbols]

[0041] 10 Lenses 11 Image Plane 12 Chromatic Aberration Correction Lens 120 convex lens 121 Concave Lens 2 Display System 20 Chromatic dispersion elimination lens assembly 200 First concave lens 201 Circular polarizer 2010 1st linear polarizer 2011 First quarter-wave plate 202 Optical adhesive 203 Magnifying convex lens assembly 2030 First convex lens 2031 Half mirror lens 2032 Second quarter wave plate 2033 Reflective polarizer 2034 Second linear polarizer 2035 Optical Adhesive 2036 Second convex lens 204 Anti-reflection layer 21 Display Module

Claims

1. 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 are opposite to each other, and the light-receiving surface is a flat surface or a convex surface; the circularly polarizing plate is provided on the concave surface of the first concave lens, and the circularly polarizing plate has a curved shape corresponding to the concave surface; the magnifying convex lens assembly is disposed on the circular polarizer via an optical adhesive; the first concave lens, the circular polarizer, and the magnifying convex lens assembly are sequentially disposed along an optical axis; the circular polarizer includes a first linear polarizer and a first quarter-wave plate, the first linear polarizer and the first quarter-wave plate being stacked in order on the concave surface of the first concave lens, and the first linear polarizer and the first quarter-wave plate being curved in accordance with the concave surface; the magnifying convex lens assembly is mounted on the first quarter-wave plate via the optical adhesive; the first concave lens, the first linear polarizer, the first quarter-wave plate, and the magnifying convex lens assembly are sequentially arranged along an optical axis; 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 facing each other, a half mirror lens is provided on the convex surface of the first convex lens, and the convex surface of the first convex lens is provided on the first quarter-wave plate via the optical adhesive and the half mirror lens; the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are stacked in this order on the concave surface of the first convex lens, and the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved in a manner corresponding to the concave surface of the first convex lens; the second convex lens has a concave surface and a convex surface facing each other, and the convex surface of the second convex lens is attached to the second linear polarizer via another optical adhesive; the half mirror lens, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer, and the second convex lens are arranged in order along the optical axis.

2. an anti-reflection layer is further provided on the light receiving surface of the first concave lens; 2. The lens assembly for eliminating color dispersion according to claim 1.

3. the light receiving surface of the first concave lens faces a display surface of a display module; the display module is located within a total effective focal length of the first concave lens, the circular polarizer, and the magnifying convex lens assembly, and the display module outputs unpolarized light to the light-receiving surface of the first concave lens.

2. The lens assembly for eliminating color dispersion according to claim 1.

4. The display module is a liquid crystal-on-silicon display module, a digital light processing module, or a micro LED display module; 4. The lens assembly for eliminating color dispersion according to claim 3.

5. 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 are opposite to each other, and the light-receiving surface is a flat surface or a convex surface; the circularly polarizing plate is provided on the light-receiving surface of the first concave lens, and when the light-receiving surface is the convex surface, the circularly polarizing plate has a curved shape corresponding to the convex surface; the magnifying convex lens assembly is attached to the concave surface of the first concave lens via an optical adhesive; the circular polarizer, the first concave lens, and the magnifying convex lens assembly are sequentially arranged along an optical axis; the circular polarizer includes a first linear polarizer and a first quarter-wave plate, the first quarter-wave plate and the first linear polarizer being stacked in order on the light-receiving surface of the first concave lens, and when the light-receiving surface is the convex surface, 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 sequentially arranged along the optical axis; 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 facing each other, a half mirror lens is provided on the convex surface of the first convex lens, and the convex surface of the first convex lens is provided on the concave surface of the first concave lens via the optical adhesive and the half mirror lens, the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are stacked in this order on the concave surface of the first convex lens, and the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved in a manner corresponding to the concave surface of the first convex lens; the second convex lens has a concave surface and a convex surface facing each other, and the convex surface of the second convex lens is attached to the second linear polarizer via another optical adhesive; the half mirror lens, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer, and the second convex lens are arranged in order along the optical axis, forming a lens assembly for eliminating chromatic dispersion.

6. an anti-reflection layer is further provided between the light receiving surface of the first concave lens and the circular polarizer; 6. A lens assembly for eliminating color dispersion according to claim 5.

7. the circular polarizer faces a display surface of a display module, the display module is located within a total effective focal length of the circular polarizer, the first concave lens, and the magnifying convex lens assembly, and the display module outputs unpolarized light to the circular polarizer.

6. A lens assembly for eliminating color dispersion according to claim 5.

8. The display module is a liquid crystal on silicon display module, a digital light processing module, or a micro LED display module; 8. The lens assembly for eliminating color dispersion according to claim 7.

9. a first concave lens, a circular polarizer, a magnifying convex lens assembly, 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 flat surface or a convex surface; the circularly polarizing plate is provided on the concave surface of the first concave lens, and the circularly polarizing plate has a curved shape corresponding to the concave surface; the magnifying convex lens assembly is disposed on the circular polarizer via an optical adhesive; the first concave lens, the circular polarizer, and the magnifying convex lens assembly are sequentially disposed along an optical axis; the circular polarizer includes a first linear polarizer and a first quarter-wave plate, the first linear polarizer and the first quarter-wave plate being stacked in order on the concave surface of the first concave lens, and the first linear polarizer and the first quarter-wave plate being curved in accordance with the concave surface; the magnifying convex lens assembly is mounted on the first quarter-wave plate via the optical adhesive; the first concave lens, the first linear polarizer, the first quarter-wave plate, and the magnifying convex lens assembly are sequentially disposed along the optical axis; 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 facing each other, a half mirror lens is provided on the convex surface of the first convex lens, and the convex surface of the first convex lens is provided on the first quarter-wave plate via the optical adhesive and the half mirror lens; the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are stacked in this order on the concave surface of the first convex lens, and the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved in a manner corresponding to the concave surface of the first convex lens; the second convex lens has a concave surface and a convex surface facing each other, and the convex surface of the second convex lens is attached to the second linear polarizer via another optical adhesive; the half mirror lens, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer, and the second convex lens are arranged in order along the optical axis; a display surface of the display module facing the light-receiving surface of the first concave lens, the display module emitting unpolarized light to the light-receiving surface of the first concave lens, and the display module being located within a total effective focal length of the first concave lens, the circular polarizer, and the magnifying convex lens assembly.

10. an anti-reflection layer is further provided on the light receiving surface of the first concave lens; 10. The display system of claim 9.

11. The display module is a liquid crystal on silicon display module, a digital light processing module, or a micro LED display module; 10. The display system of claim 9.

12. a first concave lens, a circular polarizer, a magnifying convex lens assembly, 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 flat surface or a convex surface; the circularly polarizing plate is provided on the light-receiving surface of the first concave lens, and when the light-receiving surface is the convex surface, the circularly polarizing plate has a curved shape corresponding to the convex surface; the magnifying convex lens assembly is attached to the concave surface of the first concave lens via an optical adhesive; the circular polarizer, the first concave lens, and the magnifying convex lens assembly are sequentially arranged along an optical axis; the circular polarizer includes a first linear polarizer and a first quarter-wave plate, the first quarter-wave plate and the first linear polarizer being stacked in order on the light-receiving surface of the first concave lens, and when the light-receiving surface is the convex surface, 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 sequentially disposed along the optical axis; 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 facing each other, a half mirror lens is provided on the convex surface of the first convex lens, and the convex surface of the first convex lens is provided on the concave surface of the first concave lens via the optical adhesive and the half mirror lens, the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are stacked in this order on the concave surface of the first convex lens, and the second quarter-wave plate, the reflective polarizer, and the second linear polarizer are curved in a manner corresponding to the concave surface of the first convex lens; the second convex lens has a concave surface and a convex surface facing each other, and the convex surface of the second convex lens is attached to the second linear polarizer via another optical adhesive; the half mirror lens, the first convex lens, the second quarter-wave plate, the reflective polarizer, the second linear polarizer, and the second convex lens are arranged in order along the optical axis; a display module having a display surface facing the circular polarizer, the display module being located within a total effective focal length of the first concave lens, the circular polarizer, and the magnifying convex lens assembly, and the display module emitting unpolarized light to the circular polarizer.

13. an anti-reflection layer is further provided between the light receiving surface of the first concave lens and the circular polarizer; 13. The display system of claim 12.

14. The display module is a liquid crystal on silicon display module, a digital light processing module, or a micro LED display module; 13. The display system of claim 12.

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