Optical machine module and near-eye display device

Abstract

The present invention discloses an optical machine module and a near-eye display device, which relate to the field of optical technology. The optical machine module includes an image source and a plastic free-form surface lens. The plastic free-form surface lens includes multiple free-form surfaces, and the multiple free-form surfaces include at least: a first free-form surface, a second free-form surface, and a third free-form surface; the third free-form surface is provided with a polarization splitter film, which transmits S-polarized light and reflects P-polarized light; the P-polarized light emitted or reflected by the image source is transmitted through the second free-form surface, incident on the first free-form surface, and is totally reflected by the first free-form surface to the third free-form surface. After being reflected by the third free-form surface, it is emitted through the first free-form surface. The optical lens material of the optical machine module of the present invention is plastic, which will greatly reduce the cost of mass production. The traditional polarization splitter prism is eliminated, and a plastic free-form surface lens is provided, which retains the function of multiplexing the imaging illumination light path, is applicable to a variety of chips, and also greatly reduces the overall volume of the optical machine.

Description

Technical Field

[0001] The present invention relates to the field of optical technology, and in particular to an optical machine module and a near-eye display device. Background Art

[0002] In recent years, augmented reality (AR) technology has developed rapidly, and researchers have proposed a variety of solutions, such as Birdbath, prism, free-form surface, and optical waveguide technologies. The first three solutions often conflict between a good product form and excellent display effects. Optical waveguides, on the other hand, can effectively resolve these issues. The optomechanical plus optical waveguide solution is a lightweight and miniaturized AR solution, and is the most important future AR development solution.

[0003] In light waveguide technology, an optical engine, or optical machine, is required as the image generation unit. Generally speaking, light waveguides can be made thin and lightweight, with a form factor similar to that of a pair of spectacles. Optical machines currently include various solutions based on micro-LED chips, liquid crystal on silicon chips, and organic light emitting diode chips. These solutions vary in size, typically ranging from 0.2 to 2cc, depending on key optical parameters such as field of view, clarity, and brightness.

[0004] Currently, the most common self-luminous screens are micro-LED chips or organic light-emitting diode chips. The AR optical engine design based on such self-luminous screens is similar to that of a projection imaging lens, and is larger in the vertical direction. Screens based on passive luminescence are generally silicon-based liquid crystal chips. Passive luminescence requires additional lighting optical path design, so it has higher brightness than self-luminous AR optical engine solutions. However, due to the polarization characteristics of silicon-based liquid crystal chips, a larger polarization beam splitter prism is required. Therefore, silicon-based liquid crystal chip optical engines are generally 4 to 5 times larger than self-luminous AR optical engines. However, the volume of silicon-based liquid crystal chip optical engines can now be reduced to less than 1cc. How to further reduce the size of the optical engine is a problem that technicians in this field need to solve. Summary of the Invention

[0005] The present invention provides an optical machine module and a near-eye display device, which are not only applicable to a variety of chips but also small in size and low in cost.

[0006] In a first aspect, an embodiment of the present invention provides an optical machine module, comprising an image source and a plastic free-form surface lens, wherein the plastic free-form surface lens comprises a plurality of free-form surfaces, the plurality of free-form surfaces comprising at least a first free-form surface, a second free-form surface, and a third free-form surface; the third free-form surface is provided with a polarization beam splitter film, the polarization beam splitter film transmitting S-polarized light and reflecting P-polarized light;

[0007] The P-polarized light emitted or reflected by the image source is transmitted through the second free-form surface, then incident on the first free-form surface, then totally reflected by the first free-form surface to the third free-form surface, then reflected by the third free-form surface, and then emitted through the first free-form surface.

[0008] Optionally, the sagittal height z of the free-form surface satisfies: ; Wherein, c is the curvature radius of the free-form surface, r is the radial radius coordinate of the free-form surface, and k is the aspheric coefficient of the free-form surface. is a polynomial of the free-form surface in a first direction x and a second direction y, wherein the first direction x is an axisymmetric direction of the free-form surface, the second direction y is a non-axisymmetric direction of the free-form surface, the first direction x and the second direction y are perpendicular, and N is the total number of polynomial coefficients in the series. is the coefficient of the i-th expanded polynomial;

[0009] Among them, the maximum extension item of the first free-form surface is greater than 10 items, the focal length f1x in the first direction x satisfies: -300mm≤f1x≤-80mm, and the focal length f1y in the second direction y satisfies: 150mm≤f1y≤480mm; the maximum extension item of the second free-form surface is greater than 10 items, the focal length f2x in the first direction x satisfies: -40mm≤f2x≤-10mm, and the focal length f2y in the second direction y satisfies: 16mm≤f2y≤100mm; the maximum extension item of the third free-form surface is greater than 20 items, the focal length f3x in the first direction x satisfies: 10mm≤f3x≤100mm, and the focal length f3y in the second direction y satisfies: 15mm≤f3y≤160mm.

[0010] Optionally, it also includes: an illumination light source, a collimating element, and a compound eye homogenizing element;

[0011] The light emitted by the illumination light source is collimated by the collimating element and then enters the compound-eye homogenizing element. After being subdivided into multiple light spots by the compound-eye units in the compound-eye homogenizing element, the light is converted into S-polarized light after passing through the third free-shaped surface. After being totally reflected by the first free-shaped surface, the light is transmitted from the second free-shaped surface to the image source, and then converted into P-polarized light by the image source. After being transmitted by the second free-shaped surface, the P-polarized light is incident on the first free-shaped surface, is totally reflected by the first free-shaped surface to the third free-shaped surface, and after being reflected by the third free-shaped surface, is emitted through the first free-shaped surface.

[0012] Optionally, the collimating element includes a first collimating lens, and the refractive index of the first collimating lens is greater than 1.6;

[0013] At least one surface of the first collimating lens is a convex surface, and the convex surface is an even-order aspheric surface;

[0014] The focal length f1 of the first collimating lens satisfies: 1 mm ≤ f1 ≤ 5.5 mm.

[0015] Optionally, the collimating element includes a second collimating lens and a third collimating lens sequentially arranged in the direction of light emitted by the illumination light source, the second collimating lens includes a glass convex lens, and the third collimating lens includes an even-order aspheric lens;

[0016] The second collimating lens includes at least one convex surface, and the focal length f2 of the second collimating lens satisfies: 2mm≤f2≤4.5mm;

[0017] Both surfaces of the third collimating lens are convex and even-order aspheric surfaces, and the focal length f3 of the third collimating lens satisfies: 2mm≤f3≤4.5mm.

[0018] Optionally, the compound eye homogenizing element includes a double-sided microstructure, and the double-sided microstructure includes compound eye transverse cells and compound eye longitudinal cells, wherein the number of the compound eye transverse cells and the number of the compound eye longitudinal cells are both greater than 7, and the shape of the compound eye transverse cells and the shape of the compound eye longitudinal cells are both rectangular, hexagonal or circular.

[0019] Optionally, the field of view angle of the image source is less than or equal to 50 degrees and the size is 0.13 inches.

[0020] Optionally, the image source is a self-luminous pixel.

[0021] Optionally, the method further includes: a waveguide plate, wherein the input end of the waveguide plate corresponds to the output end of the first free-form surface and is used to receive the light output by the first free-form surface;

[0022] The waveguide plate includes a diffraction waveguide or an arrayed waveguide.

[0023] In a second aspect, an embodiment of the present invention further provides a near-eye display device, comprising the optical-mechanical module described in the first aspect.

[0024] An embodiment of the present invention provides an optical machine module and a near-eye display device. The optical machine module includes an image source and a plastic free-form surface lens. The plastic free-form surface lens includes multiple free-form surfaces, including at least a first free-form surface, a second free-form surface, and a third free-form surface. The third free-form surface is provided with a polarization splitter film, which transmits S-polarized light and reflects P-polarized light. The P-polarized light emitted or reflected by the image source is transmitted through the second free-form surface and then incident on the first free-form surface. It is then totally reflected by the first free-form surface to the third free-form surface. After being reflected by the third free-form surface, it is emitted through the first free-form surface. The optical lens of the optical machine module of the embodiment of the present invention is made of plastic, which greatly reduces the cost of mass production. At the same time, the traditional polarization splitter prism is eliminated. By providing a plastic free-form surface lens, the function of multiplexing the imaging illumination light path is retained, making it applicable to a variety of chips and greatly reducing the overall size of the optical machine. Not only can it be applied to a variety of chips, but it is also small in size and low in cost.

[0025] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 1 is a schematic structural diagram of an optical-mechanical module provided by an embodiment of the present invention;

[0028] Figure 2 1 is a schematic structural diagram of another optical-mechanical module provided by an embodiment of the present invention;

[0029] Figure 3 A schematic structural diagram of a collimating element provided in an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of another collimating element provided by an embodiment of the present invention;

[0031] Figure 5 This is a partial structural diagram of a compound eye light homogenizing element provided by an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of a transverse unit cell and a longitudinal unit cell of a compound eye provided by an embodiment of the present invention;

[0033] Figure 7 It is a structural schematic diagram of another optical machine module provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] Figure 1 This is a schematic diagram of the structure of an optical machine module provided by an embodiment of the present invention, with reference to Figure 1 The optical engine module includes an image source 110 and a plastic free-form surface lens 120. The plastic free-form surface lens 120 comprises multiple free-form surfaces, including at least a first free-form surface 121, a second free-form surface 122, and a third free-form surface 123. The third free-form surface 123 is provided with a polarization splitting film that transmits S-polarized light and reflects P-polarized light. P-polarized light emitted or reflected by the image source 110 passes through the second free-form surface 122, then enters the first free-form surface 121. It is then totally reflected by the first free-form surface 121 onto the third free-form surface 123. After being reflected by the third free-form surface 123, it is emitted through the first free-form surface 121.

[0037] Specifically, the image source 110 may include a micro-LED chip, a silicon-based liquid crystal chip, or an organic light-emitting diode chip, wherein the micro-LED chip and the organic light-emitting diode chip are self-luminous chips, and the silicon-based liquid crystal chip is a passive light-emitting chip.

[0038] It can be understood that since the plastic free-form surface lens 120 includes multiple free-form surfaces, the multiple free-form surfaces include at least: a first free-form surface 121, a second free-form surface 122 and a third free-form surface 123, and the third free-form surface 123 is provided with a polarization splitting film, the polarization splitting film transmits S-polarized light and reflects P-polarized light. Therefore, the plastic free-form surface lens 120 can replace the traditional polarization splitting prism and retain the function of imaging illumination light path multiplexing, and is suitable for a variety of chips.

[0039] It should be noted that when the image source 110 uses a passive light emitting chip, an illumination light path needs to be provided. When the image source 110 uses a self-luminous chip, the functions of the optical machine can be satisfied without providing an illumination light path and a polarization beam splitter.

[0040] The optical lens of the optical machine module of the embodiment of the present invention is made of plastic, which greatly reduces the mass production cost. At the same time, the traditional polarization beam splitter prism is eliminated. By setting the plastic free-form surface lens 120, the imaging illumination light path multiplexing function is retained. It is suitable for a variety of chips and greatly reduces the overall size of the optical machine.

[0041] Optionally, based on the above embodiment, the sag z of the free-form surface satisfies: ; Where c is the curvature radius of the free-form surface, r is the radial radius coordinate of the free-form surface, and k is the aspheric coefficient of the free-form surface. is the polynomial of the free-form surface in the first direction x and the second direction y, the first direction x is the axisymmetric direction of the free-form surface, the second direction y is the non-axisymmetric direction of the free-form surface, the first direction x and the second direction y are perpendicular, N is the total number of polynomial coefficients in the series, is the coefficient of the i-th expanded polynomial.

[0042] For example, Can include: x, y, 、xy、 、 、 、 、 …and so on.

[0043] Among them, the maximum expansion item of the first free-form surface 121 is greater than 10 items, and the focal length f1x in the first direction x satisfies: -300mm≤f1x≤-80mm, and the focal length f1y in the second direction y satisfies: 150mm≤f1y≤480mm; the maximum expansion item of the second free-form surface 122 is greater than 10 items, and the focal length f2x in the first direction x satisfies: -40mm≤f2x≤-10mm, and the focal length f2y in the second direction y satisfies: 16mm≤f2y≤100mm; the maximum expansion item of the third free-form surface 123 is greater than 20 items, and the focal length f3x in the first direction x satisfies: 10mm≤f3x≤100mm, and the focal length f3y in the second direction y satisfies: 15mm≤f3y≤160mm.

[0044] Figure 2 This is a schematic diagram of the structure of another optical machine module provided by an embodiment of the present invention. Optionally, based on the above embodiment, refer to Figure 2 The optical machine module further includes: an illumination light source 130, a collimating element 140, and a fly-eye homogenizing element 150; the light emitted by the illumination light source 130 is collimated by the collimating element 140 and then enters the fly-eye homogenizing element 150. After being subdivided into a plurality of light spots by the fly-eye units in the fly-eye homogenizing element 150, the light is converted into S-polarized light after passing through the third free-form surface 123. After being totally reflected by the first free-form surface 121, the light is transmitted from the second free-form surface 122 to the image source 110, and then converted into P-polarized light by the image source 110. After being transmitted through the second free-form surface 122, the P-polarized light is incident on the first free-form surface 121, is totally reflected by the first free-form surface 121 to the third free-form surface 123, and is reflected by the third free-form surface 123 before being emitted from the first free-form surface 121 ( Figure 2 The green lines in the figure are normals).

[0045] The illumination light source 130 may be a 4-in-1 or multi-in-1 light emitting diode light source, including red, green and blue light, which can be converted into white light by circuit current matching.

[0046] It should be noted that the image source in this embodiment utilizes a passive light-emitting chip, specifically a liquid crystal on silicon (LCS) chip. In this embodiment, the multiple light spots formed by the subdivision of the compound-eye units in the compound-eye light homogenization element 150 evenly illuminate the LCS chip at different angles, utilizing the compound-eye light homogenization principle. The compound-eye aperture and the optical machine exit pupil are conjugate images, and the plastic free-form surface lens 120 acts as an integrating lens. For example, light from the compound-eye zero-field aperture is converted to S-polarized light after passing through the third free-form surface 123.

[0047] In other embodiments, when the LCS chip is dark field debugged, the S-polarized light incident on the LCS chip is no longer modulated, and the S-polarized light reflected by the LCS chip passes through the third free-form surface 123 to form a dark field at the optical machine exit pupil.

[0048] Figure 3 A schematic structural diagram of a collimating element provided in an embodiment of the present invention. Optionally, based on the above embodiment, refer to Figure 3 The collimating element 140 includes a first collimating lens 141, the refractive index of the first collimating lens 141 is greater than 1.6; at least one surface of the first collimating lens 141 is a convex surface, and the convex surface is an even-order aspheric surface; the focal length f1 of the first collimating lens 141 satisfies: 1mm≤f1≤5.5mm.

[0049] In this embodiment, the first collimating lens 141 is made of plastic, and when the optical lenses in the optical machine module are all made of plastic, the cost of mass production can be further reduced.

[0050] Figure 4 A schematic structural diagram of another collimating element provided in an embodiment of the present invention. Optionally, based on the above embodiment, refer to Figure 4 The collimating element 140 includes a second collimating lens 142 and a third collimating lens 143, which are sequentially arranged in the direction of light emitted by the illumination light source 130. The second collimating lens 142 includes a glass convex lens, and the third collimating lens 143 includes an even-order aspheric lens. The second collimating lens 142 includes at least one convex surface, and the focal length f2 of the second collimating lens 142 satisfies: 2mm≤f2≤4.5mm; both surfaces of the third collimating lens 143 are convex surfaces and are both even-order aspheric surfaces, and the focal length f3 of the third collimating lens 143 satisfies: 2mm≤f3≤4.5mm.

[0051] Figure 5 1 is a partial structural diagram of a compound eye light homogenizing element provided by an embodiment of the present invention. Figure 6 This is a schematic diagram of a compound eye transverse unit cell and a compound eye longitudinal unit cell provided by an embodiment of the present invention. Optionally, based on the above embodiment, reference is made to Figure 5 and Figure 6 The compound eye homogenizing element 150 includes a double-sided microstructure 151, which includes compound eye transverse cells and compound eye longitudinal cells, wherein the number of compound eye transverse cells and the number of compound eye longitudinal cells are both greater than 7, and the shapes of the compound eye transverse cells and the shapes of the compound eye longitudinal cells are both rectangular, hexagonal or circular.

[0052] It should be noted that the double-sided microstructure 151 is a microstructure provided on the surface of the compound-eye light homogenizing element 150 on the side close to the illumination light source 130 and the side away from the illumination light source 130 . Figure 6 FIG. 1 shows only part of the transverse and longitudinal compound eye cells of the compound eye light homogenizing element 150 .

[0053] Optionally, based on the above embodiment, the field of view angle of the image source 110 is less than or equal to 50 degrees, and the size is 0.13 inches.

[0054] It should be noted that, if the image source 110 is designed with a field of view of 30 degrees and a size of 0.13 inches, the volume of the optical engine module provided by the embodiment of the present invention is 70% of that of the traditional design.

[0055] Optionally, the image source 110 is a self-luminous pixel.

[0056] Specifically, when the image source 110 is a self-luminous pixel, a micro-light emitting diode chip or an organic light emitting diode chip can be used. In this case, the functions of the optical machine can be met without setting an illumination light path and a polarization beam splitter.

[0057] Figure 7 This is a structural diagram of another optical machine module provided by an embodiment of the present invention. Optionally, based on the above embodiment, continue to refer to Figure 7 The optical module further includes: a waveguide plate 160, the input end of the waveguide plate 160 corresponds to the output end of the first free-form surface 121, and is used to receive the light output by the first free-form surface 121; the waveguide plate 160 includes a diffraction waveguide or an array waveguide ( Figure 7 The green lines in the figure are normals).

[0058] In summary, the optical lens of the optical machine module of the embodiment of the present invention is made of plastic, which will greatly reduce the cost of mass production. At the same time, the traditional polarization beam splitter prism is eliminated. By setting the plastic free-form surface lens 120, the function of multiplexing the imaging illumination light path is retained, which is suitable for a variety of chips and greatly reduces the overall size of the optical machine. When the image source 110 adopts a passive light-emitting chip, it is only necessary to set up an additional illumination light path. When the image source 110 adopts a self-luminous chip, the function of the optical machine can be met without setting up an illumination light path and a polarization beam splitter. The extremely simple lens structure and lens material of the present invention contribute to a significant reduction in the cost of the optical machine. In addition, when the material of the first collimating lens 141 is plastic and the material of the optical lenses in the optical machine module are all plastic, the cost of mass production can be further reduced.

[0059] An embodiment of the present invention further provides a near-eye display device, comprising the optical-mechanical module provided in the above embodiment.

[0060] Since the near-eye display device provided by the embodiment of the present invention includes the optical-mechanical module provided by the above embodiment, it has the same beneficial effects. For the contents not described in detail in this embodiment, reference can be made to the optical-mechanical module provided by the above embodiment.

[0061] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. An optical machine module, characterized in that: The invention comprises an image source and a plastic free-form surface lens, wherein the plastic free-form surface lens comprises a plurality of free-form surfaces, wherein the plurality of free-form surfaces comprises at least a first free-form surface, a second free-form surface, and a third free-form surface; the third free-form surface is provided with a polarization beam splitting film, wherein the polarization beam splitting film transmits S-polarized light and reflects P-polarized light; The P-polarized light emitted or reflected by the image source is transmitted through the second free-form surface, is incident on the first free-form surface, is totally reflected by the first free-form surface to the third free-form surface, is reflected by the third free-form surface, and is emitted through the first free-form surface; The image source adopts a passive light-emitting chip; the optical machine module also includes: an illumination light source, a collimating element and a compound eye uniform light element; The light emitted by the illumination light source is collimated by the collimating element and then enters the compound-eye homogenizing element. After being subdivided into a plurality of light spots by the compound-eye units in the compound-eye homogenizing element, the light is converted into S-polarized light after passing through the third free-form surface. After being totally reflected by the first free-form surface, the light is transmitted from the second free-form surface to the image source, and then converted into P-polarized light by the image source. After being transmitted through the second free-form surface, the P-polarized light is incident on the first free-form surface, is totally reflected by the first free-form surface to the third free-form surface, and is reflected by the third free-form surface before being emitted through the first free-form surface. When the image source is in dark field adjustment, the S-polarized light incident on the image source is no longer modulated, and the S-polarized light reflected by the image source passes through the third free-form surface, thereby forming a dark field in the optical machine exit pupil; The sag z of the free-form surface satisfies: ; Wherein, c is the curvature radius of the free-form surface, r is the radial radius coordinate of the free-form surface, and k is the aspheric coefficient of the free-form surface. is a polynomial of the free-form surface in a first direction x and a second direction y, wherein the first direction x is an axisymmetric direction of the free-form surface, the second direction y is a non-axisymmetric direction of the free-form surface, the first direction x and the second direction y are perpendicular, and N is the total number of polynomial coefficients in the series. is the coefficient of the i-th expanded polynomial; Among them, the maximum extension item of the first free-form surface is greater than 10 items, the focal length f1x in the first direction x satisfies: -300mm≤f1x≤-80mm, and the focal length f1y in the second direction y satisfies: 150mm≤f1y≤480mm; the maximum extension item of the second free-form surface is greater than 10 items, the focal length f2x in the first direction x satisfies: -40mm≤f2x≤-10mm, and the focal length f2y in the second direction y satisfies: 16mm≤f2y≤100mm; the maximum extension item of the third free-form surface is greater than 20 items, the focal length f3x in the first direction x satisfies: 10mm≤f3x≤100mm, and the focal length f3y in the second direction y satisfies: 15mm≤f3y≤160mm.

2. The optical machine module according to claim 1, wherein: The collimating element includes a first collimating lens, wherein the refractive index of the first collimating lens is greater than 1.6; At least one surface of the first collimating lens is a convex surface, and the convex surface is an even-order aspheric surface; The focal length f1 of the first collimating lens satisfies: 1 mm ≤ f1 ≤ 5.5 mm.

3. The optical machine module according to claim 1, wherein: The collimating element comprises a second collimating lens and a third collimating lens which are sequentially arranged in the direction of light emitted by the illumination light source, the second collimating lens comprises a glass convex lens, and the third collimating lens comprises an even-order aspheric lens; The second collimating lens includes at least one convex surface, and the focal length f2 of the second collimating lens satisfies: 2mm≤f2≤4.5mm; Both surfaces of the third collimating lens are convex and even-order aspheric surfaces, and the focal length f3 of the third collimating lens satisfies: 2mm≤f3≤4.5mm.

4. The optical machine module according to claim 1, wherein: The compound eye homogenizing element includes a double-sided microstructure, and the double-sided microstructure includes compound eye transverse cells and compound eye longitudinal cells, wherein the number of the compound eye transverse cells and the number of the compound eye longitudinal cells are both greater than 7, and the shape of the compound eye transverse cells and the shape of the compound eye longitudinal cells are both rectangular, hexagonal or circular.

5. The optical machine module according to claim 1, wherein: The field of view of the image source is less than or equal to 50 degrees and the size is 0.13 inches.

6. The optical machine module according to claim 1, wherein: The image source is a self-luminous pixel.

7. The optical machine module according to claim 1, wherein: Also includes: a waveguide plate, the input end of the waveguide plate corresponding to the output end of the first free-form surface, and configured to receive light outputted by the first free-form surface; The waveguide plate includes a diffraction waveguide or an arrayed waveguide.

8. A near-eye display device, characterized in that: The optical machine module comprises the optical machine module according to any one of claims 1 to 7.

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