Pupil distance adjusting module and head-mounted electronic device

Abstract

An interpupillary distance adjusting module comprises a first optical module base, a second optical module base and a third optical module base, wherein the first optical module base comprises a first sliding block and a first linkage point; the second optical module base comprises a second sliding block and a second linkage point; the linkage mechanism comprises a linkage rod, a third linkage point and a fourth linkage point; the base comprises a first sliding groove, a second sliding groove and a rotating shaft, the first sliding groove and the second sliding groove are parallel to each other and define a sliding groove direction, and a rotating point of the linkage rod is pivoted to the rotating shaft; when the toggle point rotates the linkage rod, moves the first optical module base or moves the second optical module base, the third linkage point and the fourth linkage point are linked with the first linkage point and the second linkage point at the same time, and then the first optical module base and the second optical module base are controlled to be close to or away from each other at equal intervals in the direction of the sliding groove.

Description

Technical Field

[0001] The invention relates to a pupil distance adjustment module, and in particular to a head-mounted electronic device including the pupil distance adjustment module. Background Art

[0002] Virtual Reality (VR) technology is a computer simulation system that can create and experience a virtual world. It can use computers to generate an interactive analog environment that integrates multiple sources of information, allowing users to immerse themselves in the environment. With the continuous development of technology, virtual reality technology has been increasingly used in industries and fields including medicine, entertainment, industrial simulation, aerospace, education, etc.

[0003] Augmented Reality (AR) technology uses a camera to capture real images and combines them with certain identification and positioning technologies to allow the real scene on the screen to be augmented with computer-generated objects, allowing users to see both the real world and the virtual world at the same time.

[0004] As one of the important components of virtual reality technology and augmented reality technology, head mounted electronic devices (HMD) are gradually becoming popular in life. Head mounted electronic devices can expand the degree of scientific three-dimensional visualization and enhance the user-computer interaction performance. With the application of virtual reality technology and augmented reality technology in many fields, head mounted electronic devices have also received more and more attention. In order to make the related head mounted electronic devices, such as wearable virtual reality (VR) / augmented reality (AR) glasses, adapt to different age groups and achieve a more comfortable use experience.

[0005] Interpupillary distance, commonly referred to as IPD (Interpupillary distance), can be described as the physical distance between the eyes or the width of the eyes. Most head-mounted electronic devices have an optical module (containing lenses and displays). If the center of the user's eyes is not aligned with the optical axis of the optical module, the maximum clarity and field of view will not be achieved.

[0006] Therefore, there is a need to provide an interpupillary distance adjustment module and a head-mounted electronic device that can solve the aforementioned problems. Summary of the invention

[0007] An object of the present invention is to provide a pupil distance adjustment module which can adjust the pupil distance or eye width by means of the linkage between a linkage rod and two optical module bases.

[0008] According to the above-mentioned purpose, the present invention provides a pupil distance adjustment module, comprising: a first optical module base, comprising a first body, at least one first slider and a first linkage point, wherein the first slider and the first linkage point are respectively located on a bottom surface and a side of the first body; a second optical module base, comprising a second body, at least one second slider and a second linkage point, wherein the second slider and the second linkage point are respectively located on a bottom surface and a side of the second body; a linkage mechanism, comprising a linkage rod, a third linkage point and a fourth linkage point, wherein the linkage rod has a rotation point, the third and the fourth linkage points are symmetrically arranged at both ends of the rotation point of the linkage rod, and are mechanically connected to the first and the second linkage points respectively; and a base, carrying the first One and a second optical module base, and include at least one first slide groove, at least one second slide groove and a rotating shaft, wherein the first and second slide grooves are parallel to each other and define a first slide groove direction, the rotation point of the linkage rod is pivotally connected to the rotating shaft, and the first and second sliders are used to be respectively arranged in the first and second slide grooves and move along the first slide groove direction; wherein at least one of the first optical module base, the second optical module base and the linkage rod is provided with a toggle point, whereby when the toggle point rotates the linkage rod, moves the first optical module base, or moves the second optical module base, the third and fourth linkage points are simultaneously linked with the first and second linkage points, thereby controlling the first and second optical module bases to be equidistantly close to or away from each other along the first slide groove direction. A pupil distance adjustment module of the present invention further includes: a first optical module and a second optical module, which are respectively positioned and fixed on the first and second optical module bases, wherein the distance between the optical axis of the first optical module and the optical axis of the second optical module is 50-80 mm. As a pupil distance adjustment module of the present invention, the first and second sliders are one of hooks and screws. As a pupil distance adjustment module of the present invention, when the first and second sliders are hooks, the first and second sliders are integrally formed with the first and second bodies respectively; and when the first and second sliders are screws, the first and second sliders are locked to the first and second bodies respectively. As a pupil distance adjustment module of the present invention, when the number of the first slide groove and the number of the second slide groove are respectively one, the first and second sliding blocks respectively include an end portion with a T-shaped cross-section, which is respectively hooked into the first and second slide grooves. As a pupil distance adjustment module of the present invention, when the number of the first slide grooves and the number of the second slide grooves are at least two respectively, each of the first and second sliders includes an end of an L-shaped cross-section or an end of a T-shaped cross-section, which are respectively hooked into each of the first and second slide grooves. As a pupil distance adjustment module of the present invention, when the number of the first sliding grooves and the number of the second sliding grooves are at least three respectively, the adjacent first and second sliding grooves are arranged in a staggered manner. As a pupil distance adjustment module of the present invention, the third and the fourth linkage points are mechanically connected to the first and the second linkage points respectively, which means that: the first and the second linkage points respectively include the first and the second cylindrical sliders, and the third and the fourth linkage points respectively include the first and the second elongated slide grooves, and the first and the second cylindrical sliders are arranged in the first and the second elongated slide grooves, and the first and the second elongated slide grooves are defined with a second slide groove direction, which is parallel to an axial direction of the linkage rod, wherein when the toggle point rotates the linkage rod, moves the first optical module base, or moves the second optical module base, the first and the second cylindrical sliders move both along the first slide groove direction and the second slide groove direction. As a pupil distance adjustment module of the present invention, a tight fit design is achieved by mechanically connecting the third and fourth linkage points with the first and second linkage points, or by pivoting the linkage rod with the rotating shaft, thereby producing a damping effect on the toggle point.

[0009] The present invention further provides a head-mounted electronic device, comprising: a housing; the pupil distance adjustment module disposed in the housing, wherein the switching point is exposed outside the housing; and a controller disposed in the housing.

[0010] According to the head-mounted electronic device of the present invention, the pupil distance adjustment module of the present invention can adjust the pupil distance or eye width by the linkage between the linkage rod and the two optical module bases, for example, the adjustable distance is 50 to 80 mm. When the user sets the correct pupil distance or eye width, the image quality of virtual reality (VR) and augmented reality (AR) can be maximized, especially when the user views through the optical axis of the optical module, the maximum clarity and field of view can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figures 1 to 3 The schematic diagrams of the pupil distance adjustment module according to one embodiment of the present invention are respectively viewed from above, from the side and from below, which show that the first and second optical modules are located at the first position P1.

[0012] Figures 4 to 6 The schematic diagrams of the pupil distance adjustment module according to one embodiment of the present invention are respectively viewed from above, from the side and from below, which show that the first and second optical modules are located at the second position P2.

[0013] Figure 7 For along Figure 1 and Figure 4 Schematic diagram of the cross section of the interpupillary distance adjustment module along the section line AA.

[0014] Figure 8 For along Figure 1 and Figure 4 A cross-sectional schematic diagram of the interpupillary distance adjustment module along the section line BB.

[0015] Fig. 9 for Figure 1 and Figure 4 A partially enlarged plan view of an interpupillary distance adjustment module.

[0016] Fig.10 For along Figure 1 and Figure 4 Schematic cross-sectional view of the interpupillary distance adjustment module along the section line CC.

[0017] Fig.11a , Fig.11b and Fig.11c The first, second and third cross-sectional schematic diagrams are respectively the first and second sliding blocks according to an embodiment of the present invention.

[0018] Fig.12 FIG. 4 is a bottom schematic diagram of a pupil distance adjustment module according to another embodiment of the present invention.

[0019] Fig.13a and Fig.13b The first and second schematic diagrams are respectively downward-looking diagrams of a pupil distance adjustment module according to yet another embodiment of the present invention.

[0020] Fig.14 FIG. 4 is a three-dimensional schematic diagram of a head-mounted electronic device according to an embodiment of the present invention.

[0021] In the figure: 1 pupil distance adjustment module; 10 toggle point; 11 first optical module base; 11a first optical module; 110 first body; 111 first slider; 112 first linkage point; 1121 first cylindrical slider; 113 bottom surface; 114 side; 12 second optical module base; 12a second optical module; 120 second body; 121 second slider; 122 second linkage point; 1221 second cylindrical slider; 123 bottom surface; 124 side; 13 linkage mechanism; 130 linkage rod; 1300 axial ; 131 rotation point; 133 third linkage point; 1331 first long strip slide; 134 fourth linkage point; 1341 second long strip slide; 135 slide direction; 140 rotation axis; 14 base; 141 first slide; 142 second slide; 143 slide direction; 15 hook; 15' hook; 15a end 15a' end; 16 screw; 16a end; 2 head-mounted electronic device; 20 housing; 30 controller; D1 first distance; D2 second distance; P1 first position; P2 second position. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0023] Figures 1 to 3 The schematic diagrams of the pupil distance adjustment module according to one embodiment of the present invention are respectively viewed from above, from the side and from below, which show that the first and second optical modules are located at the first position P1. Figures 4 to 6 The diagrams are respectively the top view, the side view and the bottom view of the pupil distance adjustment module according to an embodiment of the present invention, which show that the first and second optical modules are located at the second position P2. Figures 1 to 6 The pupil distance adjustment module 1 includes: a first optical module base 11, a second optical module base 12, a linkage mechanism 13 and a base 14.

[0024] Figure 7 For along Figure 1 and Figure 4 The cross-sectional diagram of the interpupillary distance adjustment module is shown along the section line AA. Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 The first optical module base 11 includes a first body 110, at least one first slider 111 and a first linkage point 112, wherein the first slider 111 and the first linkage point 112 are respectively located on a bottom surface 113 and a side 114 of the first body 110. The second optical module base 12 includes a second body 120, at least one second slider 121 and a second linkage point 122, wherein the second slider 121 and the second linkage point 122 are respectively located on a bottom surface 123 and a side 124 of the second body 120. The pupil distance adjustment module 1 also includes: a first optical module 11a and a second optical module 12a, which are respectively positioned and fixed on the first optical module base 11 and the second optical module base 12. For example, the first and second optical modules 11a and 12a include lenses and displays. The diameters of the first and second optical modules 11a and 12a are about 50-80 mm.

[0025] Figure 8 For along Figure 1 and Figure 4 A cross-sectional schematic diagram of the interpupillary distance adjustment module along the section line BB. Fig. 9 for Figure 1 and Figure 4 Partially enlarged plan view of the interpupillary distance adjustment module. Please refer to Figure 1 , Figure 4 , Figure 8 and Fig. 9The linkage mechanism 13 includes a linkage rod 130, a third linkage point 133 and a fourth linkage point 134, wherein the linkage rod 130 has a rotation point 131, and the third and fourth linkage points 133, 134 are symmetrically arranged at both ends of the rotation point 131 of the linkage rod 130, and are mechanically connected to the first and second linkage points 112, 122 respectively. The third and fourth linkage points 133 and 134 are mechanically connected to the first and second linkage points 112 and 122, respectively, which means that the first and second linkage points 112 and 122 respectively include first and second cylindrical sliders 1121 and 1221, and the third and fourth linkage points 133 and 134 respectively include first and second long strip slide grooves 1331 and 1341, and the first and second cylindrical sliders 1121 and 1221 are disposed in the first and second long strip slide grooves 1331 and 1341. The first and second long strip slide grooves 1331 and 1341 define a slide groove direction 135, which can be parallel to the axial direction 1300 of the linkage rod 130. For example, the distance between the rotation point 131 and the first and second long strip slide grooves 1331 and 1341 is about 10-20 mm. The lengths of the first and second elongated slots 1331 and 1341 are approximately 2-7 mm.

[0026] The first optical module base 11 or the linkage rod 130 is provided with a toggle point 10, or the second optical module base 12 is also provided with a toggle point (not shown). When the toggle point 10 rotates the linkage rod 130, moves the first optical module base 11, or moves the second optical module base 12, the first and second cylindrical sliders 1121, 1221 move along the slide groove direction 143 of the base 14 and the slide groove direction 135 of the linkage rod 130.

[0027] Fig.10 For along Figure 1 and Figure 4 The cross-sectional diagram of the interpupillary distance adjustment module is shown along the cross-sectional line CC. Figure 3 , Figure 6 and Fig.10 The base 14 carries the first and second optical module bases 11 and 12, and includes at least one first slide groove 141, at least one second slide groove 142 and a rotating shaft 140, wherein the first and second slide grooves 141 and 142 are parallel to each other and define the slide groove direction 143, the rotation point 131 of the linkage rod 130 is pivoted to the rotating shaft 140, and the first and second sliders 111 and 121 are respectively disposed in the first and second slide grooves 141 and 142 and move along the slide groove direction 143 of the base 14. For example, the lengths of the first and second slide grooves 141 and 142 are about 40 to 50 mm.

[0028] Please refer to Figure 1 and Figure 4 When the user rotates the linkage rod 130 with the toggle point 10, moves the first optical module base 11, or moves the second optical module base 12, the third and fourth linkage points 133, 134 are simultaneously linked with the first and second linkage points 112, 122, thereby controlling the first and second optical module bases 11, 12 to be equidistantly close to or equidistantly away from each other along the slide groove direction 143, or controlling the first optical module 11a on the first optical module base 11 and the second optical module 12a on the second optical module base 12 to be equidistantly close to or equidistantly away from each other along the slide groove direction 143. For example, the first and second optical modules 11a, 12a are moved from the first position P1 ( Figures 1 to 3 as shown) moves to the second position P2 ( Figures 4 to 6 As shown in FIG. 1 ), the distance between the optical axis of the first optical module 11a and the optical axis of the second optical module 12a is increased from the first distance D1 to the second distance D2, and the first and second optical modules 11a and 12a are equidistant from each other, preferably, the adjustable distance between the optical axis of the first optical module 11a and the optical axis of the second optical module 12a is about 50 to 80 mm. In other words, the adjustable distance of the pupil distance adjustment module of the present invention for the user's pupil distance or eye width is about 50 to 80 mm.

[0029] Fig.11a , Fig.11b and Fig.11c 1 is a schematic diagram of the first, second and third cross-sections of the first and second sliding blocks of an embodiment of the present invention. Fig.11a , Fig.11b , Fig.11c and Figure 7 , the first and second sliders 111, 121 are hooks 15, 15' or screws 16. When the first and second sliders 111, 121 are hooks 15, 15', the hooks 15, 15' are integrally formed with the first and second bodies 110, 120, respectively, so that the number of parts can be reduced. When the first and second sliders 111, 121 are screws 16, the screws 16 are respectively locked to the first and second bodies 110, 120, so that the hooked effect can be achieved by locking.

[0030] Fig.12 This is a bottom view of a pupil distance adjustment module according to another embodiment of the present invention. Fig.12 , Fig.11b and Fig.11cWhen the number of the first slide grooves 141 and the number of the second slide grooves 142 are respectively one, the first and second sliders 111, 121 respectively include a T-shaped cross-section end 15a, 16a, which are hooked to the first and second slide grooves 141, 142. Although the number of the first slide grooves 141 and the number of the second slide grooves 142 are respectively only one, the first and second sliders 111, 121 are hooked to the first and second slide grooves 141, 142 with a T-shaped cross-section, so the first and second optical module bases 11, 12 can still move smoothly along the slide groove direction 143 without skewing. Please refer to Figure 3 and Fig.11a , Fig.11b and Fig.11c When the number of the first slide grooves 141 and the number of the second slide grooves 142 are at least two, the first and second sliders 111 and 121 respectively include an L-shaped cross-sectional end 15a' or a T-shaped cross-sectional end 15a, 16a, which are respectively hooked to the first and second slide grooves 141 and 142. Since the number of the first slide grooves 141 and the number of the second slide grooves 142 are two, respectively, the first and second optical module bases 11 and 12 can move smoothly along the slide groove direction 143 without skewing. Fig.13a and Fig.13b 1 and 2 are schematic bottom views of a pupil distance adjustment module according to another embodiment of the present invention. Fig.13a and Fig.13b When the number of the first slide grooves 141 and the number of the second slide grooves 142 are at least three, the adjacent first and second slide grooves 141 and 142 are arranged in a staggered arrangement. Since the number of the first slide grooves 141 and the number of the second slide grooves 142 are three, respectively, and the adjacent slide grooves are arranged in a staggered arrangement, the first and second optical module bases 11 and 12 can move more smoothly along the slide groove direction 143. Each of the first and second sliders 111 and 121 can include an end of an L-shaped cross section or an end of a T-shaped cross section, which are respectively hooked in each of the first and second slide grooves 141 and 142.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3The assembling method of the pupil distance adjustment module of the present invention comprises the following steps: the first slider 111 of the first optical module base 11 and the second slider 121 of the second optical module base 12 are respectively arranged in the first and second slide grooves 141 and 142 of the base 14, and are respectively hooked in the first and second slide grooves 141 and 142. The linkage rod 130 is rotated so that the third and fourth linkage points 133 and 134 of the linkage rod 130 are respectively mechanically connected to the first linkage point 112 of the first optical module base 11 and the second linkage point 122 of the second optical module base 12. The first and second optical modules 11a and 12a are respectively positioned and fixed on the first and second optical module bases 11 and 12 to complete the assembly of the pupil distance adjustment module. The present invention can utilize the mechanical connection between the third and fourth linkage points 133, 134 and the first and second linkage points 112, 122 to achieve a tight fit design, or the pivot connection between the linkage rod and the rotating shaft to achieve a tight fit design, thereby producing a damping effect on the toggle point 10 to prevent the linkage rod 130, the first optical module base 11, or the second optical module base 12 from being accidentally moved.

[0032] Fig.14 2 is a three-dimensional schematic diagram of a head-mounted electronic device according to an embodiment of the present invention. The head-mounted electronic device 2 includes a housing 20, the pupil distance adjustment module 1 and a controller 30. The optical zoom module 1 is disposed in the housing 20. The controller is disposed in the housing and is electrically connected to the optical zoom module 1. The controller 22 may be a general-purpose processor, a microprocessor (MCU), an application processor (AP), a digital signal processor (DSP), a graphics processor (GPU), or a holographic processor (HPU), or any combination of the above processors, which may include various circuit logics for: providing data and image processing and calculation functions, transmitting frame data (such as data representing text information, graphics, or images) to the image source (such as a display) of the optical zoom module 1. The toggle point 10 is exposed outside the housing 20, so that when the toggle point rotates the linkage rod, moves the first optical module base, or moves the second optical module base, the third and fourth linkage points are simultaneously linked with the first and second linkage points, thereby controlling the first optical module located on the first optical module base and the second optical module located on the second optical module base to be equidistantly close to or away from each other along the direction of the slide groove.

[0033] According to the head-mounted electronic device of the present invention, the pupil distance adjustment module of the present invention can adjust the pupil distance or eye width by the linkage between the linkage rod and the two optical module bases, for example, the adjustable distance is 50 to 80 mm. When the user sets the correct pupil distance or eye width, the image quality of virtual reality (VR) and augmented reality (AR) can be maximized, especially when the user views through the optical axis of the optical module, the maximum clarity and field of view can be achieved.

[0034] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A pupil distance adjustment module, characterized in that: include: A first optical module base, comprising a first body, at least one first slider and a first linkage point, wherein the first slider and the first linkage point are respectively located on a bottom surface and a side edge of the first body; A second optical module base, comprising a second body, at least one second slider and a second linkage point, wherein the second slider and the second linkage point are respectively located on a bottom surface and a side edge of the second body; A linkage mechanism, comprising a linkage rod, a third linkage point and a fourth linkage point, wherein the linkage rod has a rotation point, the third and fourth linkage points are symmetrically arranged at two ends of the rotation point of the linkage rod, and are mechanically connected to the first and second linkage points respectively; and A base supports the first and second optical module bases and includes at least one first slide groove, at least one second slide groove and a rotating shaft, wherein the first and second slide grooves are parallel to each other and define a first slide groove direction, the rotation point of the linkage rod is pivotally connected to the rotating shaft, and the first and second sliders are used to be respectively arranged in the first and second slide grooves and move along the first slide groove direction; wherein at least one of the first optical module base, the second optical module base and the linkage rod is provided with a toggle point, whereby when the toggle point rotates the linkage rod, moves the first optical module base, or moves the second optical module base, the third and fourth linkage points are simultaneously linked with the first and second linkage points, thereby controlling the first and second optical module bases to be equidistantly close to or away from each other along the first slide groove direction.

2. The pupil distance adjustment module according to claim 1, characterized in that: Also includes: The first optical module and the second optical module are positioned and fixed on the first and second optical module bases respectively, wherein the distance between the optical axis of the first optical module and the optical axis of the second optical module is 50-80 mm.

3. The pupil distance adjustment module according to claim 1, characterized in that: The first and second sliding blocks are one of hooks and screws.

4. The pupil distance adjustment module according to claim 3, characterized in that: When the first and second sliders are hooks, the first and second sliders are integrally formed with the first and second bodies respectively; and when the first and second sliders are screws, the first and second sliders are locked to the first and second bodies respectively.

5. The pupil distance adjustment module according to claim 1, characterized in that: When the number of the first sliding groove and the number of the second sliding groove are respectively one, the first and second sliding blocks respectively include an end portion with a T-shaped cross-section, which is respectively hooked into the first and second sliding grooves.

6. The pupil distance adjustment module according to claim 1, characterized in that: When the number of the first slide grooves and the number of the second slide grooves are at least two respectively, each of the first and second sliding blocks respectively includes an end of an L-shaped cross-section or an end of a T-shaped cross-section, which is respectively hooked into each of the first and second slide grooves.

7. The pupil distance adjustment module according to claim 1, characterized in that: When the number of the first sliding grooves and the number of the second sliding grooves are at least three respectively, the adjacent first and second sliding grooves are arranged in a staggered manner.

8. The pupil distance adjustment module according to claim 1, characterized in that: The third and the fourth linkage points are mechanically connected to the first and the second linkage points respectively, which means that: the first and the second linkage points respectively include the first and the second cylindrical sliders, and the third and the fourth linkage points respectively include the first and the second elongated slide grooves, and the first and the second cylindrical sliders are arranged in the first and the second elongated slide grooves, and the first and the second elongated slide grooves are defined with a second slide groove direction, which is parallel to an axial direction of the linkage rod, wherein when the toggle point rotates the linkage rod, moves the first optical module base, or moves the second optical module base, the first and the second cylindrical sliders move along both the first slide groove direction and the second slide groove direction.

9. The pupil distance adjustment module according to claim 1, characterized in that: The third and fourth linkage points are mechanically connected to the first and second linkage points to achieve a tight fit design, or the linkage rod is pivotally connected to the shaft to achieve a tight fit design, thereby producing a damping effect on the toggle point.

10. A head-mounted electronic device, characterized in that: include: a housing; The interpupillary distance adjustment module according to any one of claims 2 to 9, disposed in the housing, wherein the toggle point is exposed outside the housing; as well as A controller is disposed in the housing.

Images