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] The design of the pancake optical system is based on the principle of polarization, utilizing the characteristic of the reflective polarizer to selectively reflect and project different polarized light, and combining a quarter waveplate that generates a phase difference of 1 / 4 wavelength to adjust the shape of the polarized light, so that the light beam can be reflected back and forth between the half mirror lens and the reflective polarizer, and finally transmitted through the reflective polarizer. After passing through the quarter waveplate, the circularly polarized light becomes linearly polarized light and reaches the reflective polarizer, where it is reflected, then passes through the quarter waveplate a second time, returns to circular polarization, and is reflected by the half mirror lens, and the circularly polarized light passes through the quarter waveplate a third time and becomes linearly polarized again. At this time, the light beam is rotated 90 degrees compared to the first time, so it can pass through the reflective polarizer and complete the imaging.

[0003] Pancake optics is a combination of lenses, and the focal length is usually adjusted by controlling the position of one of the lenses. For myopic users, adjusting the focal length when wearing a conventional VR (virtual reality) head-mounted display is often done by changing lenses, which is a tedious process and the focal length options are limited. If the optical system is upgraded to pancake technology, the focal length adjustment method will have more options and become more convenient. Since pancake optics is generally a combination of multiple lenses, one of the lenses can be moved to adjust the refractive index of the entire optical module, thereby meeting the needs of focus adjustment, but this method cannot be achieved with conventional lenses or Fresnel lenses. However, since the color dispersion phenomenon is related to the wavelength of light, the combination of conventional lenses, Fresnel lenses, and pancake lenses all have the color dispersion phenomenon. The focal length of the lens changes with the wavelength of light, causing longitudinal color dispersion. The magnification of the lens is related to the wavelength of light, causing transverse color dispersion. Therefore, the color dispersion phenomenon of the lens cannot be completely eliminated.

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

[0005] The present invention provides a display system for improving the phenomenon of lateral chromatic aberration and a lens assembly for eliminating chromatic dispersion. [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 face each other, and the light receiving surface is a flat surface or a convex surface. The circular polarizer is disposed 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 disposed on the circular polarizer via an optical adhesive, and the first concave lens, the circular polarizer, and the magnifying convex lens assembly are all disposed in this order along the optical axis.

[0007] In one embodiment of the present invention, the 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, the light receiving surface and the concave surface are opposite to each other, and the light receiving surface is flat or convex. The circular polarizer is disposed 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 disposed on the circular polarizer via an optical adhesive, and the first concave lens, the circular polarizer, and the magnifying convex lens assembly are all disposed in this order along the optical axis. The display module has a display surface facing 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, the circular polarizer, and the 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 corresponding 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 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 an optical adhesive and a half mirror lens. The second quarter-wave plate, the reflective polarizer, and the second linear polarizer are laminated 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 a concave surface and a convex surface facing each other, and the convex surface of the second convex lens is provided on the second linear polarizer via an optical adhesive, and 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 all installed along the optical axis in this order.

[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-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, the light receiving surface and the concave surface face each other, and the light receiving surface is a flat surface or a convex surface. The circular polarizer is disposed on the light receiving surface of the first concave lens, and when the light receiving surface is a convex surface, the circular polarizer is curved 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, the first concave lens, and the magnifying convex lens assembly are all disposed in this order along the optical axis.

[0013] In one embodiment of the present invention, the 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, the light-receiving surface and the concave surface are opposite to 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 a convex surface, the circular polarizer is curved 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, the first concave lens, and the magnifying convex lens assembly are all installed 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 output 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, the first quarter wave plate and the first linear polarizer are stacked in this order 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 to correspond 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 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 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 an optical adhesive and a half mirror lens. The second quarter wave plate, the reflective polarizer, and the second linear polarizer are laminated 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 a concave surface and a convex surface facing each other. The convex surface of the second convex lens is provided on the second linear polarizer via an optical adhesive, and 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 all installed along the optical axis in this order.

[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. Effect 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 different positions of the concave surface of the concave lens to have different curvatures and different magnifications to improve the transverse chromatic aberration phenomenon. [Brief description 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 the drawings of preferred embodiments.

[0020] [Figure 1] FIG. 1 is a diagram illustrating the chromatic aberration phenomenon of a general lens. [Diagram 2] FIG. 1 illustrates the elimination of the chromatic aberration phenomenon by an achromatic lens of the present invention. [Diagram 3] FIG. 1 is a diagram showing a display system according to a first embodiment of the present invention. [Figure 4] FIG. 11 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 in the tangential and sagittal directions of red light in the second embodiment of the present invention. [Figure 5B] 10A and 10B are diagrams illustrating the tangential and sagittal field curvatures of blue light in the second embodiment of the present invention. [Figure 5C] 13A and 13B are diagrams illustrating the tangential and sagittal field curvatures of green light in the second embodiment of the present invention. [Figure 6A] FIG. 11 is a diagram illustrating distortion of red light in the second embodiment of the present invention. [Figure 6B] FIG. 11 is a diagram illustrating distortion aberration of blue light in the second embodiment of the present invention. [Figure 6C] FIG. 11 is a diagram illustrating distortion of green light in the second embodiment of the present invention. [Figure 7] FIG. 11 is a curve diagram showing the field angle and lateral chromatic aberration of red and blue light in the second embodiment of the present invention. [Figure 8] FIG. 11 illustrates the elimination of chromatic aberration phenomena by a display system in a second embodiment of the present invention. [Figure 9] FIG. 13 is a diagram showing a display system according to a third embodiment of the present invention. [Figure 10] FIG. 13 is a diagram showing a display system according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The embodiments of the present invention are further described below with reference to the relevant figures. In the drawings and the specification, the same reference numerals are used to indicate the same or similar parts, wherever possible. In the drawings, shapes and thicknesses may be exaggerated for simplicity and convenience. Elements not specifically shown in the drawings or described in the specification may be interpreted as being in a form known to those skilled in the art. Those skilled in the art may 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. In contrast, when an element is described as being "directly" on another element, no other elements may be present between the two. 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 are not intended to refer to the same embodiment. Furthermore, particular elements, structures, and features in one or more embodiments may be combined in any suitable manner.

[0024] The following description will be given with specific examples, but these examples are merely used for the purpose of illustration. Those skilled in the art may make various changes and modifications within the scope of the present disclosure. The scope of protection of the present disclosure is based on the contents specified in the claims. In this specification and claims, unless otherwise specified, the terms "a" and "said" include the meaning of "one or at least one". In addition, as in this disclosure, the singular expression also includes the meaning of "plurality" unless it is clear from the specific context. Furthermore, unless otherwise specified in the contents of this specification and claims, the terms "herein" and "wherein" may include the meanings "in" and "thereof". Terms used in this specification and claims have the same meaning as those terms are normally used in the field, the contents of this disclosure, and the specific contents, unless otherwise specified. Terms for describing this disclosure are explained separately in the following paragraphs or the specification, so that practitioners of the art can more clearly understand the description of this disclosure. Any examples of any portion of this specification include use of examples of the terms described herein, which examples are used for illustrative purposes only and do not limit the scope and meaning of the disclosure or any exemplified terms. Likewise, the disclosure is not limited to the various embodiments proposed herein.

[0025] The terms "including, having, comprising, containing," and the like, as used herein, are open ended, i.e., 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. Moreover, the abstract and headings are merely used as an aid in searching the patent document, and are not used to limit the scope of the claims of the present invention.

[0026] Unless otherwise specified, certain conditional phrases or terms such as "can," "may," "might," or "may" can also be construed to refer to features, components, or steps that may be described in embodiments of the invention but that may be unnecessary. In other embodiments, these features, components, 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 different magnifications at different positions on the concave surface of the concave lens to improve the lateral chromatic aberration phenomenon.

[0028] FIG. 1 is a diagram showing the chromatic aberration phenomenon of a general lens. Referring to FIG. 1, generally, a lens 10 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 thick line is emitted toward the lens 10, blue light and red light correspond to different refractive indices, so that the lens 10 separates the blue light and the red light. When blue light and red light are emitted toward the image plane 11 from the lens 10, blue areas and red areas are formed in different areas of the image plane 11. This is the chromatic dispersion phenomenon or chromatic aberration phenomenon. FIG. 2 is a diagram showing the elimination of the chromatic aberration phenomenon by the chromatic aberration correction lens of the present invention. Referring to FIG. 2, the chromatic aberration correction lens 12 includes a convex lens 120 and a concave lens 121 bonded together, and the convex lens 120 and the concave lens 121 have different optical properties and are made of glass. In addition, red light is represented by a solid line, and blue light is represented by a dashed line. When the white light represented by the thick line is emitted toward the achromatic lens 12, the blue light and the red light are slightly separated by the achromatic lens 12. Since the convex lens 120 and the concave lens 121 have different optical properties, when the blue light and the red light are emitted from the achromatic lens 12 toward the image plane 11, they are irradiated onto the same area of ​​the image plane 11, thereby avoiding the phenomenon of color dispersion and chromatic aberration. From a photochemical point of view, the achromatic lens 12 can eliminate the chromatic aberration of the yellow light with a wavelength of 589.3 nm and the violet light with a wavelength of 430.8 nm.

[0029] FIG. 3 is a diagram showing a display system according to a first embodiment of the present invention. The first embodiment of the display system 2 will be introduced below, so please refer to FIG. 3. The display system 2 includes a lens assembly 20 for eliminating color dispersion and a display module 21, and 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 lens assembly 20 for eliminating color dispersion 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 taken 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 corresponding to the concave surface. The magnifying convex lens assembly 203 is disposed 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 disposed in this order along the optical axis, which is represented by a dashed line. The circular polarizer 201 is curved to correspond to the concave surface, so that light leakage caused by axial misalignment between the circular polarizer 201 and the magnifying convex lens assembly 203 can be avoided, and optical aberration and chromatic aberration can be improved. 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, and 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 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, so that the lens assembly 20 for eliminating chromatic dispersion can improve the lateral chromatic aberration. In addition, the lens assembly 20 for eliminating chromatic dispersion can also include an anti-reflection layer 204 provided on the light-receiving surface of the first concave lens 200 to improve the imaging effect.

[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 corresponding 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 concave lens 200, the first linear polarizer 2010, the first quarter wave plate 2011 and the magnifying convex lens assembly 203 are all disposed along the optical axis in this order.

[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, and 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 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. Since the first quarter-wave plate 2011 is curved to correspond to the concave surface of the first concave lens 200, it is possible to prevent light leakage due to axial misalignment between the first quarter-wave plate 2011 and the second quarter-wave plate 2032, and improve optical aberration and chromatic aberration. 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.

[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, whose light receiving surface is a convex surface, and 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 of red light in the second embodiment of the present invention. FIG. 5B is a diagram of field curvature in the tangential and sagittal directions of blue light in the second embodiment of the present invention. FIG. 5C is a diagram of field curvature in the tangential and sagittal directions of green light in the second embodiment of the present invention. FIG. 6A is a diagram of distortion aberration of red light in the second embodiment of the present invention. FIG. 6B is a diagram of distortion aberration of blue light in the second embodiment of the present invention. FIG. 6C is a diagram of distortion aberration of 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, and imaging quality is ensured.

[0034] FIG. 7 is a curve diagram of the field angle and lateral chromatic aberration of red light 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, compared with the magnifying convex lens assembly, the lateral chromatic aberration of the display system in the second embodiment is smaller. FIG. 8 is a diagram showing the elimination of the chromatic aberration phenomenon by the display system in the second embodiment of the present invention. The different kinds of lines shown in FIG. 8 represent different colors of light. When the display module 21 emits unpolarized light with different kinds of 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 is a diagram showing a display system according to a third embodiment of the present invention. The display system 2 according to the third embodiment is introduced below. The display system 2 includes a lens assembly 20 for eliminating color dispersion and a display module 21, and 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 lens assembly 20 for eliminating color dispersion includes a first concave lens 200, a circular polarizer 201, an optical adhesive 202, and an enlarged convex lens assembly 203, and 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 third embodiment, a flat light receiving surface is taken 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 enlarged convex lens assembly 203 are all installed in this order along the optical axis, and the optical axis 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 outputs unpolarized light to the polarizer 201, and 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, thereby forming a magnified virtual image. Different positions on 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, so that the lens assembly 20 for eliminating color dispersion can improve the lateral chromatic aberration. In addition, in order to improve the imaging effect, the lens assembly 20 for eliminating color dispersion may further include an anti-reflection layer 204 provided 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 can 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 corresponding 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 disposed along the optical axis in this order.

[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 provided 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 installed 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. The display system 2 according to the fourth embodiment will be introduced below, so please refer to FIG. 10. The difference between the fourth embodiment and the third embodiment is 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 a convex surface, and 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 corresponding to the convex surface of the first concave lens 200. The other components of the fourth embodiment have been introduced in the third embodiment, so they will not be described again here. Since the first quarter-wave plate 2011 is curved corresponding 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 aberration and chromatic aberration can be improved.

[0039] According to the above-described embodiment, the display system and the lens assembly for eliminating color dispersion improve the lateral 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 in 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 Lens assembly for eliminating chromatic dispersion 200 First concave lens 201 Circular polarizing plate 2010 First linear polarizer 2011 The 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 face 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 provided on the circular polarizer via an optical adhesive, and the first concave lens, the circular polarizer, and the magnifying convex lens assembly are sequentially arranged along an optical axis.

2. 2. The lens assembly for eliminating chromatic dispersion according to claim 1, wherein the circular 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 sequentially stacked on the concave surface of the first concave lens, the first linear polarizing plate and the first quarter-wave plate are curved corresponding to the concave surface, the magnifying convex lens assembly is disposed on the first quarter-wave plate via the optical adhesive, and the first concave lens, the first linear polarizing plate, the first quarter-wave plate and the magnifying convex lens assembly are sequentially disposed along an optical axis.

3. 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 laminated in 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; 3. The lens assembly for eliminating chromatic dispersion according to claim 2, wherein the second convex lens has a concave surface and a convex surface facing each other, the convex surface of the second convex lens is provided on the second linear polarizer via another optical adhesive, and 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 sequentially arranged along the optical axis.

4. 2. The lens assembly for eliminating chromatic dispersion according to claim 1, further comprising an anti-reflection layer on the light receiving surface of the first concave lens.

5. 2. The lens assembly for eliminating chromatic dispersion according to claim 1, wherein 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.

6. 6. The lens assembly for eliminating color dispersion according to claim 5, wherein the display module is a liquid crystal-on-silicon display module, a digital light processing module, or a micro LED display module.

7. 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 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, and the circular polarizer, the first concave lens, and the magnifying convex lens assembly are sequentially arranged along an optical axis.

8. 8. The lens assembly for eliminating chromatic dispersion according to claim 7, wherein 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 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 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 sequentially arranged along the optical axis.

9. 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 laminated in 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; 9. The lens assembly for eliminating chromatic dispersion according to claim 8, wherein the second convex lens has a concave surface and a convex surface facing each other, the convex surface of the second convex lens is provided on the second linear polarizer via another optical adhesive, and 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 sequentially arranged along the optical axis.

10. 8. The lens assembly for eliminating chromatic dispersion according to claim 7, further comprising an anti-reflection layer between the light receiving surface of the first concave lens and the circular polarizer.

11. 8. The lens assembly for eliminating color dispersion of claim 7, wherein 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.

12. 12. The lens assembly for eliminating chromatic dispersion as claimed in claim 11, wherein the display module is a liquid crystal on silicon display module, a digital light processing module or a micro LED display module.

13. 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 face 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, and the first concave lens, the circular polarizer, and the magnifying convex lens assembly are sequentially disposed along an optical axis; a display module having a display surface 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.

14. 14. The display system of claim 13, wherein the circular polarizer comprises a first linear polarizer and a first quarter-wave plate, the first linear polarizer and the first quarter-wave plate being stacked in sequence on the concave surface of the first concave lens, the first linear polarizer and the first quarter-wave plate being curved to correspond to the concave surface, the magnifying convex lens assembly being disposed on the first quarter-wave plate via the optical adhesive, and the first concave lens, the first linear polarizer, the first quarter-wave plate and the magnifying convex lens assembly being disposed in sequence along the optical axis.

15. 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 laminated in 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; 15. The display system of claim 14, wherein 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 another optical adhesive, and 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 sequentially arranged along the optical axis.

16. 14. The display system of claim 13, further comprising an anti-reflective layer on the light receiving surface of the first concave lens.

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

18. 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 face 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 disposed on the concave surface of the first concave lens via an optical adhesive, and the circular polarizer, the first concave lens, and the magnifying convex lens assembly are sequentially disposed along an 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 outputting unpolarized light to the circular polarizer.

19. 19. The display system of claim 18, wherein 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 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, the first quarter-wave plate, the first concave lens and the magnifying convex lens assembly are arranged in sequence along the optical axis.

20. 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 laminated in 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; 20. The display system of claim 19, wherein 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 another optical adhesive, and 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 sequentially arranged along the optical axis.

21. 20. The display system of claim 18, further comprising an anti-reflection layer between the light-receiving surface of the first concave lens and the circular polarizer.

22. 20. The display system of claim 18, wherein the display module is a liquid crystal on silicon display module, a digital light processing module, or a micro LED display module.

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