Smart glasses with display function

Abstract

The application is suitable for the field of intelligent wearing products, and provides intelligent glasses with display function, which comprises a frame, lenses and temples, a nose pad is arranged on the frame; further comprising: a first optical device arranged on the inner side of the intelligent glasses, used for emitting a light beam carrying image information; a second optical device located on the nose pad or the frame where the nose pad is located, and facing the light emitting surface of the first optical device, used for guiding the light beam to the eyes of the wearer. In the intelligent glasses provided by the application, the ambient light on both sides of the lenses can be freely bidirectionally transmitted, and there is no visual line blind area when observing from any side to the other side, which improves the user experience, and this display method has no requirement on the type of lenses, does not need special optical waveguide lenses, can reduce the cost to a certain extent, and can be compatible with any traditional lenses, such as sunglasses, variable color lenses, anti-blue light lenses, prescription lenses and the like.

Description

Technical Field

[0001] This invention belongs to the field of smart wearable products, and in particular relates to a smart glasses with display function. Background Technology

[0002] Smart wearable devices are a general term for wearable devices that are designed and developed with intelligent features for everyday wearable items, such as watches, bracelets, glasses, and clothing. Among them, smart glasses can be considered a representative type of smart wearable device, which is being applied to all aspects of people's lives, work, and entertainment.

[0003] Smart glasses typically include AR glasses, VR glasses, and AI glasses, integrating artificial intelligence technology and featuring functions such as voice interaction, translation, photography, navigation, and display. They can translate languages ​​in real time, record memorable moments, and provide a convenient user experience. For example, some AI smart glasses can easily take photos and videos while skiing, cycling, or driving, and also support voice control for playing music and starting navigation. Furthermore, some AR and AI smart glasses have near-eye display capabilities, projecting images, text, and video information directly into the user's field of vision to provide navigation instructions, message notifications, and schedule reminders. This improves information acquisition efficiency, interaction convenience, and immersive experience, while also protecting privacy, as the displayed content cannot be seen by others, making them suitable for use in public places.

[0004] Eyeglasses with near-eye display capabilities should ideally meet the following requirements: 1. From an aesthetic design perspective, the eyepiece optics used for near-eye display should not appear obtrusive when viewed by a third party. 2. From the perspective of everyday wearability, the eyepiece optics should minimize obstruction of the user's field of vision when observing the outside world through the smart glasses. 3. From the perspective of viewing the displayed image, the image presented by the eyepiece optics should be projected in a position easily accessible to the user. 4. Minimal modifications to the lenses are preferable, and compatibility with various lens types should be maximized.

[0005] The structural principle of an existing smart glasses is as follows: Figure 1A As shown, an optical waveguide is provided in region A of lens 11, and an optical engine 12 is provided on the frame or temple. The optical waveguide has several semi-transparent and semi-reflective films 111. When the image source light emitted by the optical engine 12 enters the optical waveguide, it will be constrained to be transmitted inside the optical waveguide due to the total internal reflection of the inner wall of the optical waveguide. Each time it passes through a semi-transparent and semi-reflective film 111, a portion of the image source light will be reflected to the human eye. Finally, the wearer can see the image displayed by the optical engine 12.

[0006] but, Figure 1AThis near-eye display method has certain drawbacks. Although the wearer can see both ambient light and image source light simultaneously, because no light passes through area A on the wearer's side to reach the opposite side, there is a blind spot on the lens corresponding to area A when looking at the wearer from the opposite side. The other person cannot see the wearer's eyes, leading to a poor experience in interaction and communication. Figure 1B As shown. The main reason is that the waveguide in the source light path blocks ambient light from transmitting from the wearer's side to the other. Furthermore, these glasses require specialized waveguide lenses, which does not meet requirement 4 above.

[0007] Another type of smart glasses uses a projection method for near-eye display, the principle of which is as follows: Figure 2 As shown, the lens 21 has a reflective area 23. The image source beam emitted by the optical engine 22 is projected onto the reflective area 23, which guides the image source beam to the human eye. Because the reflective area 23 exists on the lens 21, it blocks some ambient light, which makes this technology not meet the requirements of point 2 above. Furthermore, it also requires a dedicated reflective area 23 on the lens 21, which does not meet the requirements of point 4 above.

[0008] Another type of smart glasses hides the optical engine inside the upper frame, projecting the light beam directly to the eyes. While this meets the requirements of points 1 and 2 above, it requires the wearer to look upwards to see the display content. Prolonged upward looking can cause eye strain and dizziness, failing to meet the requirement of point 3. Furthermore, there are few situations in daily life where looking upwards is necessary; therefore, the wearer's frequent upward gaze appears very strange to a third party. In addition, a small display device needs to be integrated into the eyepiece optics, which introduces another problem: the display device requires power and image signals, which must be transmitted through the frame. This results in a thicker upper frame, which is aesthetically undesirable, especially for high-resolution displays that require more wiring. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a smart glasses with display function. The optical element used to realize the display function in the smart glasses does not affect the bidirectional transmission of ambient light on both sides of the lens, avoids blind spots, improves the user experience, and is compatible with any traditional lens.

[0010] To solve the above-mentioned technical problems, the present invention is implemented as follows: a smart glasses with display function, including a frame, lenses, and temples, wherein the frame edge is provided with a nose pad; and further comprising:

[0011] A first optical device is disposed on the inner side of the smart glasses for emitting a light beam carrying image information.

[0012] The second optical device is located on the nose pad or on the frame where the nose pad is located, and is directly opposite the light-emitting surface of the first optical device, for guiding the light beam toward the wearer's eyes.

[0013] In the smart glasses provided by this invention, a first optical device is disposed on the inner side, and a second optical device is disposed on the nose pad or on the frame of the glasses where the nose pad is located. After the first optical device emits a beam of light carrying image information, the second optical device guides the beam of light toward the wearer's eyes, allowing the wearer to view the displayed image. Since neither the first nor the second optical device is disposed on the lens, ambient light can freely transmit in both directions on both sides of the lens. That is, ambient light can pass through the lens from the inner side (the side where the wearer's eyes are located) to the outer side (the side opposite to or opposite to the inner side), and it can also pass through the lens from the outer side to the inner side. There is no blind spot when looking from one side to the other, which improves the user experience. Furthermore, this display method does not require specific lens types, does not require special waveguide lenses or other specially customized lenses, which can reduce costs to a certain extent. It can be used with any lens, such as sunglasses lenses, photochromic lenses, blue light blocking lenses, prescription lenses, etc. Attached Figure Description

[0014] Figure 1 is an optical schematic diagram of smart glasses with near-eye display function provided by the prior art;

[0015] Figure 2 Figure 1 shows the visual effect of the smart glasses provided by existing technology.

[0016] Figure 3 This is a structural diagram of the smart glasses provided by the present invention;

[0017] Figure 4 yes Figure 3 A partially enlarged schematic diagram of the first optical device in the middle;

[0018] Figure 5 This is a schematic diagram of the structure of the smart glasses provided by the present invention, which are equipped with a first type of first orientation adjustment device;

[0019] Figure 6 This is an exploded structural diagram of the first orientation adjustment device and the first optical device provided by the present invention;

[0020] Figure 7 This is a schematic diagram of the structure of the second type of first orientation adjustment device provided by the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of the smart glasses provided by the present invention, which are equipped with a first type of second orientation adjustment device;

[0022] Figure 9 yes Figure 8 Enlarged view of region A in the image;

[0023] Figure 10 This is a schematic diagram of the structure of the smart glasses provided by the present invention, which are equipped with a second type of second-position adjustment device;

[0024] Figure 11 yes Figure 10 Enlarged view of region B in the image;

[0025] Figure 12 This is a schematic diagram of the structure of the smart glasses provided by the present invention, which are equipped with a fourth type of second-position adjustment device;

[0026] Figure 13 yes Figure 12 A magnified view of region C in the image.

[0027] Figure 14A This is a first structural diagram of the second optical device provided by the present invention;

[0028] Figure 14B It is the light beam that passes through Figure 14A The equivalent optical path diagram of the second optical device is shown below;

[0029] Figure 15 This is a second structural diagram of the second optical device provided by the present invention;

[0030] Figure 16 This is a schematic diagram of the first optical structure of the smart glasses provided by the present invention;

[0031] Figure 17 This is a schematic diagram of the second optical structure of the smart glasses provided by the present invention;

[0032] Figure 18 This is a schematic diagram of the third optical structure of the smart glasses provided by the present invention;

[0033] Figure 19A and Figure 19B These are two structural diagrams of the prism provided by the present invention;

[0034] Figure 20 This is a schematic diagram of the partition design principle of the inner side of the frame of the smart glasses provided by the present invention;

[0035] Figure 21 The second optical device is placed in Figure 20 A schematic diagram of the line-of-sight angle in region T;

[0036] Figure 22A and Figure 22B These are respectively when the second optical device is located at Figure 20 A schematic diagram of line-of-sight occlusion in regions T and N;

[0037] Figure 23 This is a diagram illustrating the visual fields of the left and right eyes in people's daily lives;

[0038] Figure 24 This is a schematic diagram showing the positions of the first and second optical devices;

[0039] Figure 25 Is Figure 24 A diagram with further exemplary values ​​is added based on this;

[0040] Figure 26 Viewing from a third party Figure 25 A schematic diagram of the appearance at that time;

[0041] Figure 27 This is a schematic diagram of the electrical module of the smart glasses provided by the present invention. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0043] The smart glasses provided by this invention have a display function, which can guide displayed images, videos, and other image information to the wearer's eyes in the form of projection reflection. These smart glasses can be AR (Augmented Reality) glasses, VR (Virtual Reality) glasses, or AI glasses, and possess one or more functions such as voice interaction, translation, photography, navigation, and display.

[0044] Figure 3 The external structure of the smart glasses provided by this invention is shown. (See also...) Figure 3 The smart glasses include a frame 31, two lenses 32, and two temples 33. The lenses 32 are fixedly installed inside the frame 31. The lenses 32 can be sunglass lenses, photochromic lenses, blue light blocking lenses, or prescription lenses for myopia, astigmatism, etc. It should be noted that... Figure 3 The illustration merely shows the shape of the smart glasses. In actual implementation, other structural designs can be added according to the needs of the application scenario. For example, a helmet structure can be added to the main body of the glasses, or a headband can be designed to connect the two temples. These are all covered within the protection scope of this invention.

[0045] The frame 31 can be designed in various shapes such as square, oval, and round. The frame 311 near the bridge of the nose is provided with a nose pad 34, and the smart glasses are supported on the bridge of the wearer's nose by the nose pad 34.

[0046] The temple 33 can be equipped with various electronic components, such as a rechargeable battery, speaker, microphone, 9-axis sensor, Bluetooth module, sensor, camera, touch sensor, memory, processor, etc., depending on specific needs. In practice, all or some of these electronic components can be integrated, or other necessary components can be added. Alternatively, some of these electronic components can be integrated into the frame 31.

[0047] The frame 31 and the temple 33 are connected by a hinge. Specifically, the two sides of the frame 31 bend towards the temple 33 to form a post 312, and the temple 33 is hinged to the post 312.

[0048] The smart glasses also include a first optical device 35 and a second optical device 36.

[0049] The first optical device 35 is disposed on the inner side of the smart glasses and is used to emit a light beam carrying image information. The inner side refers to the side facing the wearer's skin, and can specifically be as follows: Figure 3 The inner side of the head 312 shown can also be the inner side of the temple 33 near the end of the frame 31.

[0050] The second optical device 36 is located on the nose pad 34, or on the frame 311 where the nose pad 34 is located, for example, on the frame 311 within a certain distance (e.g., 0.5 cm) above or below the nose pad 34, and is directly opposite the light-emitting surface of the first optical device 35, for guiding the light beam toward the wearer's eyes.

[0051] Considering that different wearers have different face shapes, such as the relative positions of the ears, nose, and eyes, the smart glasses may also include a first orientation adjustment device 37 in order to accurately project the light beam of the first optical device 35 onto the second optical device 36. The first orientation adjustment device 37 is disposed on the temple 33 and connected to the first optical device 35, and is used to adjust the position and light emission direction of the first optical device 35 on the temple.

[0052] As a preferred option, see [reference] Figure 5 and Figure 6The first orientation adjustment device 37 has a sliding groove inside, into which the temple 33 is inserted. The inner side of the first orientation adjustment device 37 has a plug-in portion 371, and the inner side of the housing of the first optical device 35 has a slot. The first optical device 35 and the first orientation adjustment device 37 are fixedly connected by a plug-in connection and together surround the outer periphery of the temple 33. Pushing the first optical device 35 forward or backward allows the sliding groove to slide forward or backward along the length of the temple 33, thereby adjusting the position of the first optical device 35.

[0053] As another preferred option, see Figure 7 The first orientation adjustment device 37 also has a sliding slot inside, and the temple 33 is inserted into the sliding slot, which can also realize the position adjustment of the first optical device 35. The difference from the previous solution is that the inner side of the first orientation adjustment device 37 does not have a plug part, but has a hinge hole. The inner side of the housing of the first optical device 35 is fixed with a hinge shaft 356. By inserting the hinge shaft 356 into the hinge hole, the first optical device 35 and the first orientation adjustment device 37 are hinged to each other. Thus, the wearer can operate the first optical device 35 to swing up and down relative to the first orientation adjustment device 37 and the temple 33 to realize dual adjustment of the position and light emission direction (position and orientation of the light transmission window 352) of the first optical device 35. Of course, as mentioned above Figure 7 In one variation of the design, the slot can be designed as a non-sliding structure, with the temple 33 fixedly embedded in the slot. The first orientation adjustment device 36 does not slide in the length direction of the temple, but only relies on the first optical device 35 to swing up and down relative to the first orientation adjustment device 37 and the temple 33 to achieve adjustment of the light output direction.

[0054] Regarding the specific location of the second optical device 36, as one implementation, the second optical device 36 can be located on the frame 311 where the nose pad 34 is located, and the position of the second optical device 36 is below the nose pad 34. This can reduce the risk of interference between the light emitted by the first optical device 36 and the wearer's eyelids or eyelashes.

[0055] The specific installation method between the second optical device 36 and the nose pad 34 or the frame 311 can be, but is not limited to, the following three options:

[0056] Option 1: Directly use the surface of the nose pad 34 or the surface of the frame 311 as the reflective surface, that is, the second optical device 36 is integrally formed on the surface of the nose pad 34 or the surface of the frame 311, and the surface faces the light emission direction of the first optical device 35.

[0057] Option 2: The second optical device 36 is detachably mounted on the surface of the nose pad 34 or the surface of the frame 311, with the surface facing the light emission direction of the first optical device 35. The detachable method can be a snap-fit ​​connection or a screw connection, etc.

[0058] Option 3: The second optical device 36 is fixedly mounted on the surface of the nose pad 34 or the surface of the frame 311, with the surface facing the light emission direction of the first optical device. Unlike Option 2, the second optical device 36 is not detachable from the nose pad 34 / frame 311.

[0059] Furthermore, the smart glasses of this embodiment may also include a second orientation adjustment device, which is disposed on the frame 31 or nose pad 34 and connected to the second optical device 36. By operating the second orientation adjustment device, the position and orientation of the second optical device 36 can be adjusted.

[0060] As the first preferred option, see [link / reference] Figure 8 and Figure 9 The second orientation adjustment device includes a sliding block 381, which is cylindrical and slidably fitted onto the connector 39 between the nose pad 34 and the frame 31. Pushing the sliding block 381 allows it to slide back and forth relative to the connector 39, thereby adjusting the front-to-back position of the second optical device 36 relative to the wearer's face. The second optical device 36 is rotatably connected to the bottom end of the sliding block 381. Twisting the second optical device 36 allows it to rotate around the sliding block 381, thus adjusting the orientation of the second optical device 36.

[0061] As a second preferred option, see Figure 10 and Figure 11 The second orientation adjustment device includes a sliding block 381 and a flexible arm 382. The sliding block 381 is slidably fitted onto the connector 39 between the nose pad 34 and the frame 31. Pushing the sliding block 381 allows it to slide back and forth relative to the connector 39, thereby adjusting the front-to-back position of the second optical device 36 relative to the wearer's face. One end of the flexible arm 382 is fixedly connected to the sliding block 381, and the other end is fixedly connected to the second optical device 36. The flexible arm 382 has a high degree of freedom; by manipulating the flexible arm 382 to deform it, the second optical device 36 can be positioned in a suitable position and orientation.

[0062] As a third preferred option, the second orientation adjustment device only includes the aforementioned flexible arm 382. The second optical device 36 or the nose pad 34 on which the second optical device 36 is installed is directly fixed to the frame 31 via the aforementioned deformable flexible arm 382 (e.g., steel wire). When the flexible arm 382 deforms due to force, the angle between the second optical device 36 and the first optical device 35 and the wearer's eyes changes, so that the second optical device 36 can guide the light beam toward the wearer's eyes.

[0063] As a fourth preferred option, see Figure 12 and Figure 13 The second orientation adjustment device includes a sliding block 381, a hinged mounting base 383, and a ball joint structure 384. The sliding block 381 is slidably fitted onto the connector 39 between the nose pad 34 and the frame 31. Pushing the sliding block 381 allows it to slide back and forth relative to the connector 39, thereby adjusting the front-to-back position of the second optical device 36 relative to the wearer's face. The hinged mounting base 383 is fixedly connected to the sliding block 381, and the ball joint structure 384 is embedded in the mounting cavity of the hinged mounting base 383. The second optical device 36 is fixedly connected to the portion of the ball joint structure 384 that protrudes from the mounting cavity. By operating the second optical device 36, it can be arbitrarily swung within a large angle range to the desired angle, thereby achieving orientation adjustment of the second optical device 36.

[0064] The function of the first and second orientation adjustment devices is to enable the second optical device 36 to accurately guide the light beam emitted by the first optical device 35 to the wearer's eyes. Since different wearers may have different face shapes and eye socket depths, adjusting the position / light emission direction of the first orientation adjustment device 37 or the tilt angle of the second orientation adjustment device can ensure that the light beam is guided to the eyes of different wearers. Of course, the first and second orientation adjustment devices can be adjusted simultaneously.

[0065] As can be seen from the above, the main function of the second optical device 36 is to reflect the light beam, and its structure can be one of the following two types:

[0066] The first type, such as Figure 14A As shown, the second optical device 36 includes a reflective plane 361, and a convex surface 362 is provided on the light-incident side of the reflective plane 361. The light beam passes through the convex surface 362 and is incident on the reflective plane 361, then reflected by the reflective plane 361 and passes through the convex surface 362 again to the wearer's eye. The normal of the reflective plane 361 has an angle of inclination relative to the optical axis of the incident light beam.

[0067] The first optical device 35 emits light to the second optical device 36, which then projects the light in a direction and at a distance easily visible to the wearer. To project the light at a distance easily visible to the wearer, the second optical device 36 must have positive refractive power. The aforementioned convex surface 362 has positive refractive power, just like the convex surface of a typical convex lens. It can be seen that the light beam essentially passes through the convex surface 362 twice during the entire process: first entering through the convex surface 362, and second exiting through it. Its equivalent optical path diagram is as follows: Figure 14B As shown, the light beam is thus affected twice by the positive refractive power of the convex surface 362, which allows the beam to be projected at a distance easily visible to the wearer. Additionally, the reflective plane 361 is tilted relative to the optical axis of the incident light, further contributing to projecting the beam in a direction easily visible to the user.

[0068] The second type, such as Figure 15 As shown, the second optical device 36 includes a concave reflective surface 363, which reflects the light beam to the wearer's eye. The normal of the concave reflective surface 363 has an angle of inclination relative to the optical axis of the incident light beam.

[0069] The first optical device 35 can be an optomechanical system, such as... Figure 4 , Figure 16 As shown, the optomechanical system may include an image display element 351 and a transmission window 352. The image display element 351 emits a light beam carrying image information, which exits from the light transmission window 352 and propagates in the direction of the second optical device 36. The type of image display element 351 is not limited; for example, it may be Micro-LED (Micro Light-Emitting Diode), Micro-OLED (Micro Organic Light-Emitting Diode), LCoS (Liquid Crystal on Silicon), LCD (Liquid Crystal Display), DMD (Digital Micromirror Device), DLP (Digital Light Processing), or LBS (Laser Beam Scanning). The light transmission window 352 blocks any light rays that do not propagate in the direction of the second optical device 36, thereby preventing image light from leaking to the outside.

[0070] The "image information" carried in the beam can be an image or video pre-stored in the smart glasses, or it can be an image or video received from an external device. For example, when the wearer's mobile phone receives an image or video, the mobile phone sends the image or video to the smart glasses through a Bluetooth channel established with the smart glasses. The smart glasses then project the image or video through the first optical device 35 for the wearer to view, so the wearer does not need to specifically check the mobile phone.

[0071] As a preferred embodiment, the center of the light transmission window 352 is positioned below the upper surface of the temple 33 to reduce the risk of light escaping from the transmission window 352 and being blocked by the upper eyelid as it moves toward the second optical device 36.

[0072] Furthermore, such as Figure 17 As shown, the first optical device 35 further includes a prism 353 and a first optical component 354 located between the image display element 351 and the light transmission window 352. The first optical component 354 has positive diopter and can be a single convex lens or a combination of multiple lenses. The light beam emitted from the image display element 351 undergoes at least one reflection in the prism 353 before reaching the first optical component 354, and then passes through the first optical component 354 to reach the light transmission window 352.

[0073] Furthermore, such as Figure 18 As shown, a negative diopter lens 355 can also be provided between the image display element 351 and the prism 353. It should be noted that, although in Figure 9 The negative diopter prism 355 is illustrated as a plano-concave lens, wherein the concave surface of the negative diopter lens 355 faces the image display element 351, and the plane of the negative diopter lens 355 faces the prism 353. However, in specific implementations, other types of prisms can also be used, as long as the diopter is negative.

[0074] It should also be noted that, Figure 17 , Figure 18 The size of the prism 353 in the design can be flexibly customized, such as... Figure 19A As shown, prism 353 has only one reflecting surface. The light beam emitted by image display element 351 undergoes one reflection in prism 353 before reaching the first optical component 354. This design requires a relatively long size L1 for the first optical device 35. Correspondingly, as... Figure 19B As shown, prism 353 has two reflecting surfaces. The light beam emitted by image display element 351 is reflected twice in prism 353 before reaching the first optical component 354. This design requires a shorter size L2 for the first optical device 35. Therefore, when the size of the first optical device 35 needs to be very small, it can be achieved by increasing the number of reflecting surfaces in prism 353.

[0075] The design principles of the smart glasses provided by this invention, and the advantages of such a design, are described in detail below. (See also...) Figure 20 First, the inner surface of the eyeglass frame is divided into four areas: U (top frame), L (bottom frame), T (temple side), and N (nose pad side), and the advantages and challenges of each area are summarized. Additionally, to simplify the explanation, Figure 20 In this case, we assume that the optical engine is placed on the right side of the right frame and the image is displayed in the wearer's right eye. Those skilled in the art will know that even if the left and right sides are reversed, and the optical engine is placed on the left side of the left frame and the image is displayed in the wearer's left eye, this description is still valid and the principle is the same.

[0076] For region U: This region has the same problem as the third near-eye display technology described in the background art.

[0077] For area L: The second optics obstructs the most important external field of vision in daily life. When the wearer is performing detailed tasks at close range, they usually look down and use their eyes to perceive height to complete the work. However, if the second optics is placed in area L, it will obstruct the downward field of vision of the right eye, thus obstructing binocular vision, making manual operations more difficult, and causing great inconvenience to the wearer.

[0078] Furthermore, typical eyeglass frame designs tend to have a thinner lower frame for aesthetic purposes. However, this design prevents the frame from adequately concealing the second optical element.

[0079] For region T: such as Figure 20 As shown, the design of standard eyeglasses positions the wearer's pupils at the center of the frame, close to the nose. With this design, placing the second optics in area T results in a viewing angle exceeding 40 degrees (e.g., ...). Figure 21 (As shown). Once the viewing angle exceeds 40 degrees, maintaining a view at that angle becomes extremely difficult for the user.

[0080] For region N: such as Figure 20 As shown, the design of standard eyeglasses positions the wearer's pupil near the nose, centered in the frame. Therefore, even following this design, placing the second optics in area N keeps the viewing angle within 40 degrees, allowing for easy image viewing. Furthermore, while the user needs to look sideways to see the image, this will not appear strange to a third party, as side-viewing is a frequent and familiar action in daily life.

[0081] With this arrangement, the second optical device might obstruct the left edge of the right eye's field of vision, but the negative impact is very small. Figure 22A , 22BThe illustration shows a contrast in visual obstruction when the second optical device is located in regions T and N, respectively. Because people use both eyes in daily life, the left visual field is processed only by the left eye, as... Figure 23 As shown. Therefore, even if the second optical device blocks the left edge of the right eye's field of vision, it does not reduce the overall binocular field of vision and hardly interferes with daily activities.

[0082] Furthermore, if the second optical device is placed in area N, it can not only be hidden by the frame, but also by the bridge of the nose, thus allowing for the placement of a larger second optical device without attracting attention.

[0083] Conclusion: It is evident that the second optical device, serving as the eyepiece optics, cannot simply be placed arbitrarily on the back of the frame. As indicated in this invention, the most ideal placement is region N—that is, near the nose pad and located on the side of the frame closest to the face.

[0084] As described above, the key design feature of this invention is that the smart glasses include a "first optical device" located on the side of the frame closest to the face and adjacent to the temple, and a "second optical device (eyepiece optical device)" located on the side of the frame closest to the face and adjacent to the nose pad. The second optical device 36 does not integrate a display element. This allows for a reduction in the size of the second optical device and eliminates the need for wiring inside the frame, thereby enabling a higher level of aesthetic design.

[0085] The positions of the first optical device 35 and the second optical device 36 are as follows: Figure 24 As shown. As a preferred design, they should meet the following angle and length requirements:

[0086] GA (Gaze Angle): ≤40 degrees. If it exceeds 40 degrees, the burden of maintaining the gaze will be very heavy.

[0087] MH (horizontal distance): ≤15 mm. If it exceeds 15 mm, the second optical device will appear prominent to a third party.

[0088] MV (vertical distance): ≤12 mm, the optical axis TM is close to the face, and the light from the first optical device 35 to the second optical device 36 is more easily interfered with by the upper eyelid.

[0089] TV (vertical distance): ≤20 mm, optical axis TM is close to the face, and the light from the first optical device 35 to the second optical device 36 is easily interfered with by the upper eyelid.

[0090] Figure 25 It also shows some specific numerical values ​​as examples.

[0091] also, Figure 26 Showing a positive perspective from a third party Figure 25The appearance at that time, from Figure 26 It can be confirmed that the optical equipment is partially obscured by the frame and bridge of the nose, and is not noticeable from a third-party perspective.

[0092] Based on the structure of the smart glasses described above, the smart glasses provided by this invention can further possess eye-tracking functionality. When it is determined that the wearer's eyes are looking at the second optical device 36, the first optical device 35 is controlled to emit a light beam. Conversely, when the wearer is not looking at the second optical device 36, the first optical device 35 does not emit a light beam, thus saving power consumption of the first optical device 35. Figure 27 As shown, the smart glasses incorporate a processor 270, a sensor 271, a memory 272, and a battery 273. The sensor 271 tracks and captures the wearer's eye movements in real time. The sensor 271 can be placed near the inner side of the temple 33 and close to the first optical device 35, or near the nose pad and close to the second optical device 36, or preferably on the inner side of the upper frame. The processor 270, memory 272, and battery 273 can be integrated into the frame 31 or the temple 33.

[0093] Battery 273 connects to processor 270, sensor 271, and first optical device 35, and is used to power processor 270, sensor 271, and first optical device 35. Additionally, smart glasses may also include a 9-axis sensor 274 connected to processor 270, speaker 275, microphone 276, short-range communication module 277, etc.

[0094] A 9-axis sensor is used to detect the wearer's posture or movement.

[0095] Speaker 275 is used to output audio signals.

[0096] Microphone 276 is used to pick up the user's voice signal.

[0097] The short-range communication module 277 can be a Bluetooth module, or a combination of a Bluetooth module and a WiFi module, used to relay wireless signals. Signal relay refers to transmitting data from the smart glasses wirelessly to an external smart device (such as a smartphone) for algorithm processing and analysis via Bluetooth / WiFi. Of course, if the smart glasses themselves do not need to perform complex data processing functions, the processor 270 can also reuse the wireless communication module 277. In this case, the wireless communication module 277 also serves as the main control device of the smart glasses, such as controlling the wireless communication protocol, microphone input, speaker output, etc.

[0098] Sensor 271 is used to track and sense the wearer's eye movement trajectory. Specifically, as an optional embodiment, sensor 271 may include an infrared LED and a camera, wherein the infrared LED is used to emit infrared light to the wearer's eyes; the camera is used to track and capture the wearer's eye movement trajectory; the infrared light forms a flashing point on the eyeball, and the camera's role is to continuously track and capture the position of the flashing point, thereby determining the direction of eye movement.

[0099] The memory 272 stores program instructions that can be executed by the processor. The program instructions are used to analyze the eye movement trajectory of the wearer sensed by the sensor 271. When it is determined that the wearer's eyes are looking at the second optical device 36, the first optical device 35 is controlled to emit the light beam.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart pair of glasses with a display function, characterized in that, The frame includes a lens, lenses, and temples, with a nose pad on the edge of the frame; it also includes: A first optical device is disposed on the inner side of the smart glasses for emitting a light beam carrying image information. The second optical device is located on the nose pad or on the frame where the nose pad is located, and is directly opposite the light-emitting surface of the first optical device, for guiding the light beam toward the wearer's eyes.

2. The smart glasses as described in claim 1, characterized in that, The two sides of the frame bend towards the temples to form posts, and the temples are connected to the posts; The inner surface refers to the inner surface of the pile head.

3. The smart glasses as described in claim 1, characterized in that, The inner side is the inner side of the temple near the frame.

4. The smart glasses as described in any one of claims 1 to 3, characterized in that, The smart glasses also include a first orientation adjustment device; The first orientation adjustment device is disposed on the temple and connected to the first optical device, and is used to adjust the position of the first optical device on the temple and / or the light emission direction.

5. The smart glasses as described in claim 1, characterized in that, The second optical device is located on the frame where the nose pad is located, and the position of the second optical device is below the nose pad.

6. The smart glasses as described in claim 1, characterized in that, The second optical device is integrally formed on the surface of the nose pad or on the surface of the frame where the nose pad is located, and the surface faces the light emission direction of the first optical device.

7. The smart glasses as described in claim 1, characterized in that, The second optical device is detachably mounted on the surface of the nose pad or on the surface of the frame where the nose pad is located, the surface being oriented toward the light emission direction of the first optical device.

8. The smart glasses as described in claim 1, characterized in that, The second optical device is fixedly disposed on the surface of the nose pad or on the surface of the frame where the nose pad is located, and the surface faces the light emission direction of the first optical device.

9. The smart glasses as described in any one of claims 6-8, characterized in that, The smart glasses also include a second orientation adjustment device; The second orientation adjustment device is disposed on the frame and connected to the second optical device or the nose pad on which the second optical device is mounted, for adjusting the tilt angle of the second optical device so that the angle between the second optical device and the wearer's eyes changes relative to the first optical device.

10. The smart glasses as described in claim 1, characterized in that, The second optical device includes a reflective plane with a convex surface protruding from the light-incident side of the reflective plane; the light beam is incident on the reflective plane through the convex surface, and then reflected by the reflective plane before passing through the convex surface again to the wearer's eye; the normal of the reflective plane has an angle of inclination relative to the optical axis of the incident light beam.

11. The smart glasses as described in claim 1, characterized in that, The second optical device includes a concave reflective surface, which reflects the light beam to the wearer's eye, and the normal of the concave reflective surface has an angle relative to the optical axis of the incident light beam.

12. The smart glasses as described in claim 1, characterized in that, The first optical device includes an image display element and a light transmission window; The image display element is used to emit a light beam carrying image information, and the light beam is transmitted in the direction of the second optical device after exiting the light transmission window.

13. The smart glasses as described in claim 12, characterized in that, The center of the light transmission window is lower than the upper surface of the temple.

14. The smart glasses as described in claim 12, characterized in that, The first optical device further includes: a prism and a first optical component located between the image display element and the light transmission window; the first optical component has positive diopter. The light beam emitted by the image display element is reflected at least once in the prism before reaching the first optical component, and then passes through the first optical component to the light transmission window.

15. The smart glasses as described in claim 14, characterized in that, A negative diopter lens is provided between the image display element and the prism.

16. The smart glasses as described in claim 15, characterized in that, The light beam emitted by the image display element is reflected more than twice in the prism before reaching the first optical component.

17. The smart glasses as described in claim 1, characterized in that, The smart glasses have sensors installed on their inner side, and the frame or temples have built-in batteries, memory, and processors. The battery is connected to the sensor, the processor, and the first optical device, and is used to power the sensor, the processor, and the first optical device; The sensor is used to track and sense the wearer's eye movement trajectory; The memory stores program instructions that can be executed by the processor. The program instructions are used to analyze the eye movement trajectory of the wearer sensed by the sensor. When the analysis shows that the wearer's eyes are looking at the second optical device, the processor controls the first optical device to emit the light beam.

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