Patent Application
20190212521
The present disclosure relates to a display unit of a head-mounted electronic device, and more particularly to a display unit capable of adjusting a diopter and a pupil distance.
Currently, near-eye display devices, such as head-mounted displays (HMDs), are becoming more and more popular. The work principle of the HMDs is that an image displayed on an ultramicro display screen is enlarged by a set of precise optical lenses, and the image is projected into eyes, thus a wearer can view an enlarged virtual image, which is a similar way to take a magnifier to watch an object showing the enlarged virtual image. In order to adapt to pupil distances of different wearers, most of the current HMDs on the market can adjust the pupil distance, but few of the current HMDs on the market can adjust diopter for the wearers who are nearsighted or farsighted.
The present disclosure aims to provide a display unit and a head-mounted electronic device with the display unit, which can adjust a diopter and a pupil distance conveniently.
An exemplary embodiment of the present disclosure provides a display unit, including an optical unit, an image generation device, a first adjusting unit, and a second adjusting unit. The optical unit is movable in a preset first direction. The image generation device movably couples to the optical unit in a preset second direction. The first adjusting unit includes a first operating member and a locking mechanism synchronizing with the optical unit in the first direction. When the locking mechanism is not subjected to an external force, the locking mechanism is in a first state for locking a position of the optical unit; and when the locking mechanism is subjected to the external force by the first operating member, the locking mechanism is in a second state capable of driving the optical unit to move in the first direction. The second adjusting unit includes a transmission mechanism synchronizing with the optical unit in the first direction and a second operating member coupling to the image generation device by the transmission mechanism; wherein the second operating member surrounds the first operating member and makes the image generation device move in the second direction when rotating the second operating member.
A head-mounted electronic device includes a display displaying an image for a user to watch. The display includes a housing and the above display unit receiving in the housing.
Under the above technical solution, the user can adjust a diopter and a pupil distance, respectively. Moreover, when the second operating member is rotated, the first operating member does not need to be applied a force, and when the user applies the force to the first operating member, the user does not need to rotate the second operating member, thus adjusting the diopter and the pupil distance without interference. A structure of the first operating member surrounded by the second operating member is advantageous for reducing an area of the housing occupied by the two operating members, and thereby the whole design is relatively simple.
The following drawings are used to describe various embodiments of the present disclosure in detail in conjunction with the specific embodiments. It can be apprehended that, the elements illustrated in the drawings do not represent an actual size and proportions, the specific embodiments described herein are merely illustrated the present disclosure, and are not intended to limit the present disclosure.
In order to better understand the purposes, solutions, and advantages of the present disclosure, the technical solutions in the embodiments of the present disclosure are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. It can be apprehended that, the specific embodiments described herein are merely illustrated the present disclosure and are not intended to limit the present disclosure.
As illustrated in
As illustrated in
Since the eyes are easy to feel tired when the eyes is keeping looking straight ahead for a long time; in the above technical solution, when the user watches an image displayed on the display unit 108, the optical axes of the eyes are inclined downward to the first angle α relative to the horizontal sight plane HS, thus conforming to a comfortable viewing habit of eyes. Therefore, in the above technical solution, when the user wears the head-mounted display device 100 to watch for a long time, the user may feel untired. At the same time, the optical axes of the image beams 105 projected by the display unit 108 to the user's eyes are relatively “dispersed”, that is, the optical axes are distant from each other in a direction of the optical axes of the image beams 105 projected into the corresponding eyes, and the non-zero second angle β is formed between the two optical axes, thus the virtual image watched by the user in the direction opposite to the incident direction of the two optical axes may be easy to be focused and be coincided, and the user may easily watch a coincident image after wearing the head-mounted display device 100. Whether the user can watch the coincident image and whether the user can watch the image for a long time without being tired is important for the user experience. In summary, the above two angles are set to improve the comfortable sensation for user's wearing.
Preferably, 5°≤α≤15°, and 1°≤β≤18°. More preferably, 8°≤α≤12°, and 5°≤β≤16°.
In an alternative embodiment, the housing 106 includes an upper plate 106a, a lower plate 106b opposite to the upper plate 106a, and a front plate coupling the upper plate 106a and the lower plate 106b and facing towards the user's eyes. The front plate includes a left front plate 106c facing towards a left eye of the user and a right front plate 106d facing towards a right eye of the user. An angle formed between the left front plate 106c and the right front plate 106d equals to (180°−β). Therefore, during the assembly process, the two display units 108 abut against the left front plate 106c and the right front plate 106d respectively, and the second angle is the preset angle β, unchangeably.
In an alternative embodiment, angles γ are formed between the lower plate 106b and the left front plate 106c, and between the lower plate 106b and the right front plate 106d. The angle γ is equal or greater than (90°−α). Angles δ are formed between the upper plate 106a and the left front plate 106c, and between the upper plate 106a and the right front plate 106d. The angle δ is equal or greater than (90°+α), thus saving an accommodation space within the housing 106.
As illustrated in
When an external force is applied to the first operating member 32, thus making the locking mechanism 34 in the second state, the locking mechanism 34 can be driven to move in the first direction X under the external force, thus driving the optical unit 10 to move in the first direction X, and thereby adjusting a distance between the two display units 108 to adapt the user's pupil distance. The second operating member 44 is rotated to make the optical unit 10 move in the second direction Y through the transmission mechanism 42, thus adjusting a distance (that is the diopter) between the image generation device 20 and the optical unit 10, and thereby adapting a degree of nearsightedness or farsightedness of different users. In addition, when the second operating member 44 is rotated by the user, there is no external force need to be applied to the first operating member 32, and the locking mechanism 34 is in the first state for locking a position of the optical unit 10, thus the pupil distance may not be adjusted in a process of adjusting the diopter. Similarly, when an external force is applied to the first operating member 32, there is no need to rotate the second operating member 44, thus the diopter may not be adjusted in a process of adjusting the pupil distance. Therefore, the adjustment of the pupil distance and the adjustment of the diopter do not interfere with each other.
In addition, since the second operating member 44 needs to be executed a rotating operation, a portion operated by the user should be far away from a rotating shaft in the middle portion of the second operating member 44 to facilitate the user's operation. Therefore, the middle portion of the second operating member 44 is a part that is not conducive to the user's operation. At this time, the first operating member 32 is located at a middle portion of the second operating member 44, that is, the structure of the first operating member 32 is configured to be surrounded by the second operating member 44, which is beneficial to reduce an area of the lower plate 106b occupied by the first and second operating members 32, 44, thus the whole design is relatively concise. At the same time, the first and second operating members 32, 44 are arranged in such a way that the first and second operating members 32, 44 need not be moved to two separate locations far away from each other when the user adjusts the diopter and the pupil distance, and it is convenient for the user to operate.
Specifically, as illustrated in
The locking mechanism 34 includes an elastic member 36 and a positioning member 38. The positioning member 38 is configured to couple to a coupling portion 107. The elastic member 36 is configured to apply an elastic force to the positioning member 38 to make the positioning member 38 couple to the coupling portion 107, thus making the locking mechanism 34 in the first state. The first operating member 32 transfers the external forces to the elastic member 36 by the positioning member 38 to decouple the positioning member 38 from the coupling portion 107, thus making the locking mechanism 34 in the second state. In the embodiment, the coupling portion 107 is arranged on an inner surface of the lower plate 106b. The coupling portion 107 is substantially in a wave shape. Correspondingly, the positioning member 38 also includes an undulating portion 38a correspondingly engaging with the coupling portion 107. In this embodiment, the elastic member 36 is a spring. The elastic member 36 is located above the positioning member 38, and is always in a compressed state to apply a downward elastic force to the positioning portion 38, such that when the coupling portion 107 and the positioning member 38 are engaged in a concave-convex engagement way, and when the positioning portion 38 is only subjected to the action of the elastic member 36, the positioning portion 38 cannot move in the first direction X.
More specifically, as illustrated in
Preferably, a middle portion of an outer surface of the first operating member 32 recesses inwardly, thus it is convenient for the user to operate the first operating member 32 to drive the optical unit 10 to move in the first direction X.
It can be apprehended that, in other embodiments, the elastic member 36 may also be arranged below the positioning member 38 and in a stretched state. Furthermore, in the above embodiment, the positioning member 38 can move in a third direction Z substantially perpendicular to the first direction X or the second direction Y. However, it can be apprehended that, in other embodiments, under a principle similar to the above embodiment, the first operating member 32 can also be arranged on the upper plate 106a of the housing 106, or an outside surface of the housing 106 facing away from the user, or the like. That is, the positioning member 38 is not limited to slide in the third direction Z, for example, the positioning member 38 may be slide in the first direction X or the second direction Y.
As illustrated in
The transmission mechanism 42 include at least one screw pole 46 configured to convert a rotary motion to a linear motion. The second operating member 44 couples to the at least one screw pole 46 and drives the at least one screw pole 46 to rotate under an external force. The second operating member 44 can fixedly couple to the screw pole 46 by a screw 41 to make both of the second operating member 44 and the screw pole 46 rotate synchronously. Since the screw pole 46 couples to the image generation device 20, the second operating member 44 can be rotated to adjust a distance between the image generation device 20 and the optical unit 10, thus adapting a degree of nearsightedness or farsightedness of different users. In the embodiment, since the second operating member 44 is arranged at a bottom of the housing 106 and the image generation device 20 can move in the second direction Y, the at least one screw pole 46 may include two screw poles 46, 46a forming an angle in this embodiment. That is, a rotation of the second operating member 44 is transferred to the screw 46a by the screw pole 46, and a thread defined on the screw pole 46a couples to a thread of the optical unit 10 to convert the rotary motion to the linear motion. However, it can be apprehended that, in other embodiments, the second operating member 44 can be arranged at other locations, such as a front side surface of the housing 106 far away from the user, and the second operating member 44 can be adjusted with a single screw pole.
More specifically, the transmission mechanism 42 also includes a shell 48. The at least one screw pole 46 receives in the shell 48. The shell 48 is configured to fix the at least one screw pole 46 at a preset position, thus making it too difficult to adjust the position of the at least one screw pole 46. Preferably, the shell 48 includes a first shell 48a and a second shell 48b opposite to the first shell 48a. The second shell 48b defines a blind hole 48c. A part of the elastic member 36 receives in the blind hole 48c; and the other part of the elastic member 36 extended out of the blind hole 48c abuts against the positioning member 38. The blind hole 48c is configured to fix the elastic member 36 at a preset position.
As illustrated in
As illustrated in
It should be noted that, in other embodiments, the above circuit board of the display screen 23 can also be manufactured to be relatively small, and the bracket 24 further includes a sealing plate (not shown) for completely accommodating the display screen 23 in the bracket 24.
Specifically, the elastic sealing tube 25 includes a first fixing member 26, a second fixing member 27, and an elastic pipe member 28. The first fixing member 26 is substantially in an annular shape or a racetrack-like shape. The first fixing member 26 can be fixedly coupled to one end 28a of the elastic pipe member 28 by means of adhesive or the like, which can be configured to couple to the bracket 24. The connecting way of the bracket 24 may be as follows. An edge of the first fixing member 26 defines a plurality of through holes 26a, and at the same time, the bracket 24 defines a plurality of protrusions 24b correspondingly, thus a connection between the first fixing member 26 and the bracket 24 may be achieved by engaging the through holes 26a with the protrusions 24b. Preferably, the elastic pipe member 28 defines a plurality of through holes 28c corresponding to the through holes 26a, thus the protrusions 24b of the bracket 24 are simultaneously inserted into the through holes 26a and 28c, thus further preventing the first fixing member 26 from detaching from the elastic pipe member 28. Of course, in other embodiments, the first fixing member 26 and the one end 28a of the elastic pipe member 28 do not need to be bonded, and are directly fixed to the bracket 24 by the above-mentioned mean of fixation. The second fixing member 27 is fixed to the optical unit 10 and the other end 28b of the elastic pipe member 28 in the same way as described above, which will not be described in further details. The elastic pipe member 28 may be made from a stretchable material, such as rubber, which is preferable to be low in optical transparency. A surface of the elastic pipe member 28 preferably defines a plurality of drapes 28d perpendicular to the extending/contracting direction of the elastic pipe member 28, which facilitate the elastic pipe member 28 to contract or stretch.
It should be noted that, in the above embodiment, since the elastic pipe member 28 is soft, the first and second fixing members 26, 27, which are made from plastic and have hard character, couple to the bracket 24 and the optical unit 10 by buckling, thus improving the reliability of connection, and facilitating the assembly process. For example, the whole elastic sealing tube 25 is molded to an integral piece, and is buckled to the bracket 24 and the optical unit 10 during the assembly process. However, it should be understood that, in other embodiments, the connection of the elastic sealing tube 25 may be implemented by other means. For example, the two ends 28a, 28b of the elastic pipe member 28 are directly fixed to the bracket 24 and the optical unit 10 by means of adhesive. In addition, in other embodiments, one end of the elastic pipe member 28 may be coupled to the bracket 24 and the optical unit 10 by the fixing member 26 or 28, and the other end of the elastic pipe member 28 may couple to the bracket 24 and the optical unit 10 by other means, such as the bonding way.
It must be noted that, the terms “first”, “second”, “third”, and “fourth” and the like used in the present disclosure are used to distinguish different objects, and are not intended to describe a specific order, quantity, or importance. Similarly, the terms “a”, “an”, “the”, or the like do not indicate a quantity limitation, but are merely used to indicate that there is at least one. The terms “comprising” or “comprises” or the like means that the element or object recited before the term is intended to contain the element or the object and its equivalent recited after the term, and does not exclude other elements or objects. “Couple” or coupled terms are not limited to physical or mechanical connections, but may include electrical connections, whether it was a direct connection or an indirect connection. “Upper”, “lower”, “left”, “right”, and the like are only used to indicate the relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may also change accordingly.
The foregoing description merely depicts some exemplary embodiments of the disclosure, which are not intended to limit the disclosure. Any modifications, equivalent substitutions, and improvements made without departing from the principles of the disclosure shall all be encompassed within the protection of the disclosure.
The present application is a National Phase of International Application Number PCT/CN2016/099103, filed Sep. 14, 2016.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2016/099103 | 9/14/2016 | WO | 00 |
