Optomechanical and ar glasses

Abstract

The present disclosure relates to an optical engine and AR glasses, wherein the optical engine comprises a lens module, a display source module and a heat dissipation component, the lens module and the display source module are arranged along an optical axis, the heat dissipation component comprises a first heat dissipation component and a second heat dissipation component, the first heat dissipation component is sleeved on the lens module, the second heat dissipation component can pass through the first heat dissipation component, and a part of the second heat dissipation component is attached to the lens module, and another part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component.

Description

Technical Field

[0001] This disclosure relates to augmented reality technology, and more specifically, to an optical engine and AR glasses. Background Technology

[0002] In recent years, with the development of Augmented Reality (AR) technology, AR devices have gradually met people's pursuit of visual experience. When AR devices display virtual information in real-world scenes, they have high requirements for projection brightness and image resolution, especially in well-lit conditions such as daytime. This places high demands on the performance of the optical engine of AR devices.

[0003] The display brightness of AR devices is limited by both the optical efficiency of the optical engine's architecture and the luminous intensity of its light source. Higher light source brightness results in higher AR device display brightness. However, as light source brightness increases, so does heat generation. This increased heat leads to higher temperatures. The lens barrels and lenses of the optical engine expand and are subjected to stress due to the increased temperature. If the lens fixing components deform due to heat, it will cause slight changes in the lens's position. The lens's surface shape also changes with increasing temperature. This affects the resolution of the displayed image, thus impacting its clarity. For example, when the projected image is small or the brightness is low, the resolution deviation of the optical engine does not change significantly, and thermal defocusing is not noticeable, thus avoiding a significant visual difference. Conversely, as the projected image size or brightness increases, the internal temperature of the optical engine rises, leading to any of the following image resolution issues: clear at low brightness, blurry at high brightness, clear at low ambient temperature, or blurry at high ambient temperature.

[0004] Therefore, a technical solution is needed to ensure stable and clear image resolution when the optical engine provides high display brightness. Summary of the Invention

[0005] One object of the present invention is to provide a new technical solution for optical engines.

[0006] According to a first aspect of the present invention, an optical engine is provided, comprising: a lens module, a display source module, and a heat dissipation component, wherein the lens module and the display source module are arranged along an optical axis.

[0007] The heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module, and the second heat dissipation component can pass through the first heat dissipation component. A portion of the second heat dissipation component is attached to the lens module, and another portion of the second heat dissipation component is attached to the outer wall of the first heat dissipation component.

[0008] Optionally, the first heat dissipation component is a detachable component.

[0009] Optionally, the first heat dissipation component includes a first structural component and a second structural component, wherein the first structural component and the second structural component are hinged together, the second heat dissipation component passes through the connection position of the first structural component and the second structural component, and another part of the second heat dissipation component is attached to the outer wall of the first structural component or the second structural component.

[0010] Optionally, the first heat dissipation component is a ring-shaped component.

[0011] Optionally, the first heat dissipation component is made of magnesium-aluminum alloy, and the second heat dissipation component is made of graphite sheet.

[0012] Optionally, the optomechanic further includes a pump and heat dissipation pipes, wherein,

[0013] The display source module includes a display screen and a reinforcing plate. The display screen is fixed on the reinforcing plate. A heat dissipation channel is provided in the reinforcing plate. The heat dissipation channel is connected to the heat dissipation pipe. The pump is used to drive the liquid in the heat dissipation pipe and the liquid in the heat dissipation channel to circulate.

[0014] Optionally, the heat dissipation pipe includes a first heat dissipation pipe and a second heat dissipation pipe, wherein,

[0015] The first heat dissipation pipe is the pipe through which the liquid flowing into the heat dissipation channel passes, and the second heat dissipation pipe is the pipe through which the liquid flowing out of the heat dissipation channel passes. The diameter of the second heat dissipation pipe is larger than the diameter of the heat dissipation channel.

[0016] Optionally, the heat dissipation channels are arranged in a serpentine pattern.

[0017] According to a second aspect of the present invention, an AR glasses is provided, comprising a waveguide assembly, a temple assembly, and an optical engine as described in any of the first aspects, wherein one end of the optical engine is fixedly connected to the waveguide assembly, and the other end of the optical engine is connected to the temple assembly.

[0018] Optionally, the waveguide assembly includes a waveguide sheet and a mirror frame, wherein the waveguide sheet is disposed in the mirror frame, wherein...

[0019] When the frame material is a thermally conductive material, the second heat dissipation component extends to the frame and is attached to the frame.

[0020] In this invention, a heat dissipation component is provided in the optical engine. The heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module, and the second heat dissipation component can pass through the first heat dissipation component. A part of the second heat dissipation component is attached to the lens module, and the other part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component. This improves the heat dissipation performance of the optical engine, so that the projection display of the optical engine has higher projection brightness and stable image resolution.

[0021] The features and advantages of the embodiments of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of these embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of an optical engine according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of a heat dissipation component according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of an optical engine according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of an optical engine according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the arrangement of heat dissipation channels according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the structure of AR glasses according to an embodiment of the present invention.

[0029] Figure 7 This is a partial structural schematic diagram of AR glasses according to an embodiment of the present invention. Detailed Implementation

[0030] Various exemplary embodiments of this specification will now be described in detail with reference to the accompanying drawings.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the embodiments of this specification or their application or use.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0033] In one embodiment of the present invention, an optical engine is provided. According to... Figure 1 As shown, the optical engine includes: a lens module 110, a display source module 120, and a heat dissipation component 130.

[0034] The lens module 110 and the display source module 120 are arranged along the optical axis. The heat dissipation component 130 includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module. The second heat dissipation component can pass through the first heat dissipation component, and a portion of the second heat dissipation component is attached to the lens module, while another portion of the second heat dissipation component is attached to the outer wall of the first heat dissipation component.

[0035] In this embodiment of the invention, a heat dissipation component is provided in the optical engine. The heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module, and the second heat dissipation component can pass through the first heat dissipation component. A part of the second heat dissipation component is attached to the lens module, and the other part of the second heat dissipation component is attached to the outer wall of the first heat dissipation component. This improves the heat dissipation performance of the optical engine, so that the projection display of the optical engine has higher projection brightness and stable image resolution.

[0036] In some embodiments, the first heat dissipation component is a detachable component. This allows for the determination of whether to retain the first and second heat dissipation components based on the degree of thermal defocusing of the optical engine. The degree of thermal defocusing of the optical engine depends on its structural design, the materials of its components, and its operating temperature. For example, the theoretical degree of thermal defocusing of the optical engine may be insignificant, but after assembly, the degree of thermal defocusing may vary considerably. In such cases, the first and second heat dissipation components can be installed to address the thermal defocusing problem. Similarly, when the optical engine's operating environment changes to a high-temperature environment, the first and second heat dissipation components can be installed to prevent thermal defocusing.

[0037] In some embodiments, the first heat dissipation component is an annular component. This annular component can be a single, integral part, fitted onto the lens module. The annular component may also include multiple structural members, which are secured to the lens module by snap-fit ​​fasteners.

[0038] In some embodiments, the first heat dissipation component includes a first structural member and a second structural member, which are hinged together. This hinged connection can be achieved using a pin. The second heat dissipation component passes through the connection point between the first and second structural members, and another portion of the second heat dissipation component is attached to the outer wall of either the first or second structural member.

[0039] For example, according to Figure 2As shown, the heat dissipation component 130 includes a first heat dissipation component 131 and a second heat dissipation component 132. The first heat dissipation component 131 includes a first structural member 1311, a second structural member 1312, and a pin 1313. The first structural member 1311 and the second structural member 1312 are fixed by the pin 1313. This allows the first heat dissipation component 131 to be detachable.

[0040] according to Figure 2 As shown, the second heat dissipation component 132 passes through the first heat dissipation component 131 through the connection position of the first structural component 1311 and the second structural component 1312, that is, the setting position of the pin 1313, so that a part of the second heat dissipation component 132 is attached to the lens module 110, and the other part of the second heat dissipation component 132 is attached to the outer wall of the second structural component 1312.

[0041] In some embodiments, the first heat dissipation component has a through hole. A second heat dissipation component passes through this through hole, allowing a portion of the second heat dissipation component to be attached to the lens module, while another portion is attached to the outer wall of the first heat dissipation component. The size of the through hole is determined according to the size of the second heat dissipation component.

[0042] In some embodiments, the first heat dissipation component is made of magnesium-aluminum alloy, and the second heat dissipation component is made of graphite sheet.

[0043] The first heat dissipation component is made of magnesium-aluminum alloy. On one hand, magnesium-aluminum alloy is lightweight, ensuring that the first heat dissipation component does not add significant weight. On the other hand, magnesium-aluminum alloy has good thermal conductivity, which is beneficial for heat dissipation. The first heat dissipation component can also be made of other lightweight materials with good thermal conductivity, such as copper.

[0044] The second heat dissipation component is made of graphite sheets, a composite material with a planar thermal conductivity exceeding 1000 W / mK, enabling rapid cooling and preventing significant temperature increases. Furthermore, the lightweight nature of graphite sheets means the second heat dissipation component doesn't add excessive weight and allows for flexible folding arrangements to suit different spatial needs, increasing design flexibility.

[0045] In some embodiments, according to Figure 3 As shown, the optical engine also includes a pump 140 and a heat dissipation pipe 150. The display source module 120 includes a display screen 121 and a reinforcing plate 122. The display screen 121 is fixed on the reinforcing plate 122. A heat dissipation channel is formed inside the reinforcing plate 122. Figure 3 (Not shown). An external heat dissipation pipe 150 is connected to the heat dissipation channel. A pump 140 is used to drive the circulation of liquid within the heat dissipation pipe and the heat dissipation channel.

[0046] In this embodiment, a pump is used to circulate the liquid, so that the liquid carries away the heat directly as it flows through the heat dissipation pipes and channels, thereby achieving efficient cooling and improving heat dissipation performance.

[0047] The heat dissipation channels within the reinforcing plate 122 are etched into microscale channels using anisotropic etching.

[0048] In some embodiments, the display screen 121 may be an LCD (Liquid Crystal Display) type display screen, an OLED (Organic Light-Emitting Diode) type display screen, a QLED (Quantum Dot Light-Emitting Diode) type display screen, or a Mini-LED or Micro-LED type display screen, to provide the required virtual digital images.

[0049] according to Figure 4 As shown, the display screen 121 is an LED screen. The display screen 121 includes a silicon substrate 1211, black adhesive 1222, and FPC (Flexible Printed Circuit) 1223.

[0050] In some embodiments, according to Figure 5 As shown, the heat dissipation channels are arranged in a serpentine pattern. The heat dissipation channels can also be arranged in any of the following ways: grid type, radial type.

[0051] In some embodiments, according to Figure 3 As shown, the heat dissipation pipe 150 includes a first heat dissipation pipe 151 and a second heat dissipation pipe 152. The first heat dissipation pipe 151 is the pipe through which the liquid flows into the heat dissipation channel, and the second heat dissipation pipe 152 is the pipe through which the liquid flows out of the heat dissipation channel. The diameter of the second heat dissipation pipe 152 is larger than the diameter of the heat dissipation channel, which makes the liquid flow velocity through the heat dissipation channel greater than the liquid flow velocity through the second heat dissipation pipe. This is beneficial for the liquid to dissipate heat while flowing through the second heat dissipation pipe, reducing the temperature of the liquid flowing into the pump from the second heat dissipation pipe and improving the heat dissipation performance.

[0052] In some embodiments, the diameter of the first heat dissipation pipe is the same as the diameter of the heat dissipation channel.

[0053] In one embodiment of the present invention, AR glasses are provided. Figure 6 As shown, the AR glasses include a waveguide assembly 610, a temple assembly 620, and an optical engine 630 as provided in any of the above embodiments. One end of the optical engine 630 is fixedly connected to the waveguide assembly 610, and the other end of the optical engine 630 is connected to the temple assembly 620.

[0054] In this embodiment, the optical engine 630 includes not only a lens module, a display source module, and a heat dissipation component, but also a housing, as can be seen in [reference needed]. Figure 6 The optical engine casing can be made of plastic. In this embodiment, the first heat dissipation component is detachable. This allows for the determination of whether to retain the first and second heat dissipation components based on the degree of thermal defocusing of the optical engine. The degree of thermal defocusing of the optical engine depends on its structural design, the materials of its components, and its operating temperature. For example, the theoretical degree of thermal defocusing of the optical engine may be insignificant, but after assembly, the degree of thermal defocusing may vary considerably. In such cases, the first and second heat dissipation components can be installed to address the thermal defocusing problem. Similarly, when the optical engine's operating environment changes to a high-temperature environment, the first and second heat dissipation components can be installed to prevent thermal defocusing.

[0055] according to Figure 6 As shown, the waveguide assembly 610 includes a waveguide 611 and a frame 612. The waveguide 611 is disposed in the frame 612. The frame 612 can be made of plastic or a thermally conductive material, such as magnesium-aluminum alloy.

[0056] In some embodiments, when the frame material is a thermally conductive material, the second heat dissipation component extends to and is attached to the frame. This allows for faster heat dissipation. The thermally conductive material can be magnesium-aluminum.

[0057] For example, Figure 7 The optical mechanism shown includes a lens module 110, a display source module 120, and a heat dissipation component 130. The lens module 110 and the display source module 120 are arranged along the optical axis. The heat dissipation component 130 includes a first heat dissipation component 131 and a second heat dissipation component 132'. The first heat dissipation component 131 is sleeved on the lens module 110. The second heat dissipation component 132' can pass through the first heat dissipation component 131, and a portion of the second heat dissipation component 132' is attached to the lens module 110, while another portion of the second heat dissipation component 132' is attached to the outer wall of the first heat dissipation component 131. Figure 7 The waveguide assembly 610 shown includes a frame 612, which is made of magnesium-aluminum material. Figure 7 As shown, the second heat dissipation component 132' extends to the frame and is attached to the frame 612, which allows for faster heat dissipation.

[0058] In some embodiments, the temple assembly 620 may be made of plastic or metal.

[0059] The AR glasses provided in this embodiment of the invention include a heat dissipation component in the optical engine of the AR glasses. The heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module, and the second heat dissipation component can pass through the first heat dissipation component. A portion of the second heat dissipation component is attached to the lens module, and another portion of the second heat dissipation component is attached to the outer wall of the first heat dissipation component. This improves the heat dissipation performance of the optical engine, enabling the projection display of the optical engine to have higher projection brightness and stable image resolution, thereby improving the display quality of the AR glasses.

[0060] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0061] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0062] Various embodiments of this specification have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An optical engine, characterized in that, include: The system comprises a lens module, a display source module, and a heat dissipation component, wherein the lens module and the display source module are arranged along the optical axis. The display source module includes a display screen, and the heat dissipation component includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is sleeved on the lens module, and the second heat dissipation component can pass through the first heat dissipation component. A portion of the second heat dissipation component is attached to the lens module, and another portion of the second heat dissipation component is attached to the outer wall of the first heat dissipation component. The first heat dissipation component is a detachable component. The first heat dissipation component includes a first structural component and a second structural component. The first structural component and the second structural component are hinged together. The second heat dissipation component passes through the connection position between the first structural component and the second structural component, and another part of the second heat dissipation component is attached to the outer wall of the first structural component or the second structural component.

2. The optical engine according to claim 1, characterized in that, The first heat dissipation component is a ring-shaped component.

3. The optical engine according to claim 1, characterized in that, The first heat dissipation component is made of magnesium-aluminum alloy, and the second heat dissipation component is made of graphite sheet.

4. The optical engine according to any one of claims 1-3, characterized in that, The optomechanic also includes a pump and cooling pipes, wherein... The display source module includes a reinforcing plate, the display screen is fixed on the reinforcing plate, a heat dissipation channel is provided in the reinforcing plate, the heat dissipation channel is connected to the heat dissipation pipe, and the pump is used to drive the liquid in the heat dissipation pipe and the liquid in the heat dissipation channel to circulate.

5. The optical engine according to claim 4, characterized in that, The heat dissipation pipe includes a first heat dissipation pipe and a second heat dissipation pipe, wherein... The first heat dissipation pipe is the pipe through which the liquid flowing into the heat dissipation channel passes, and the second heat dissipation pipe is the pipe through which the liquid flowing out of the heat dissipation channel passes. The diameter of the second heat dissipation pipe is larger than the diameter of the heat dissipation channel.

6. The optical engine according to claim 5, characterized in that, The heat dissipation channels are arranged in a serpentine pattern.

7. An AR glasses, characterized in that, It includes a waveguide assembly, a temple assembly, and an optical engine as described in any one of claims 1-6, wherein one end of the optical engine is fixedly connected to the waveguide assembly, and the other end of the optical engine is connected to the temple assembly.

8. The AR glasses according to claim 7, characterized in that, The waveguide assembly includes a waveguide sheet and a mirror frame, wherein the waveguide sheet is disposed within the mirror frame. When the frame material is a thermally conductive material, the second heat dissipation component extends to the frame and is attached to the frame.

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