TW201710740A - Head-mounted display with vision compensation function - Google Patents

Abstract

A head-mounted display with a vision compensation function is disclosed herein. The present invention includes a display module for display an image; a lens module set on a emergent light path of the display module for generating an enlarge image to a user, wherein the lens module includes a convergent lens module; and a LC lens element integrated with the convergent lens; and an adjustment element which is connected with the lens module for optionally adjusting the position of the convergent lens and/or the LC lens element to compensate an abnormal vision of the user.

Description

Head-mounted display device with vision compensation

The present invention relates to a head mounted display, and more particularly to a head mounted display that can adjust for abnormal vision.

Head mounted display (HMD) is an optical product for displaying pictures and images at close range. The light path is used to adjust the signal of the display, and then the optical components are respectively sent to both eyes or a single eye to generate a picture. Generally, a head-mounted display needs to be worn by glasses, but for the user, wearing glasses and a head-mounted display at the same time may make the user uncomfortable. One way to avoid wearing glasses is to manually adjust the position of the positive lens group on the head mounted display. However, it is quite difficult for the user to manually fine tune the positive lens group to match the degree of near-far vision of the user.

One of the objects of the present invention is to provide a head-mounted display with vision compensation, which utilizes a fine adjustment of the segment type coarse adjustment and the electronically controlled refractive index change of the liquid crystal lens module to achieve an adjustment range of a larger degree (including astigmatism). .

The invention provides a head-mounted display device with vision compensation, comprising: a display module, a lens module and an adjusting member. A display module for displaying an image. The lens module is disposed in one of the light-emitting paths of the display module for forming a magnified image of the image for viewing by a user, wherein the lens module comprises: a positive lens module; and a liquid crystal lens member, Positive lens modules are integrated. And an adjustment member coupled to the lens module for selectively adjusting a position of at least one of the positive lens module and the liquid crystal lens member to compensate for abnormal vision of the user.

The purpose, technical contents, features, and effects achieved by the present invention will become more apparent from the detailed description of the appended claims.

The invention mainly provides a head-mounted display device with vision compensation, comprising: a display module, a lens module and an adjusting member. The lens module includes a positive lens module; and a liquid crystal lens member. And an adjustment member coupled to the lens module for selectively adjusting a position of at least one of the positive lens module and the liquid crystal lens member to compensate for abnormal vision of the user. The embodiments of the present invention will be described in detail below with reference to the drawings. In addition to the detailed description, the present invention may be widely practiced in other embodiments, and any alternatives, modifications, and equivalent variations of the described embodiments are included in the scope of the present invention, and the scope of the following patents is quasi. In the description of the specification, numerous specific details are set forth in the description of the invention. In addition, well-known steps or elements are not described in detail to avoid unnecessarily limiting the invention. The same or similar elements in the drawings will be denoted by the same or similar symbols. It is to be noted that the drawings are for illustrative purposes only and do not represent the actual dimensions or quantities of the components. The irrelevant details are not fully depicted in order to facilitate the simplicity of the drawings.

First, please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a head mounted display according to an embodiment of the present invention. As shown in the figure, a head-mounted display device 1 with vision compensation includes a display module 10, a lens module 12, and an adjustment member 14. The display module 10 is configured to display an image. The lens module 12 is disposed on one of the light-emitting paths P of the display module 10 for forming a magnified image of the image for viewing by a user 2, wherein the lens module 12 includes: a positive lens module 120. In an embodiment, it includes a plurality of optical lenses 1202; and a liquid crystal lens member 122 that is integrated with the positive lens module 120. The adjusting member 14 is connected to the lens module 12 for selectively adjusting the position of at least one of the positive lens module 120 and the liquid crystal lens member 122 (as shown in FIGS. 2A and 2B ) to compensate one of the users 2 . Abnormal vision. In one embodiment, the abnormal visual acuity is at least one of a nearsightedness, a farsightedness, and an astigmatism, and the degree of the compensated user's abnormal visual power ranges from -400 degrees to 0 degrees or from 0 degrees to 400 degrees. The invention enables the user to easily and effectively adjust the degree to meet the needs of various users.

In another embodiment, the position of the liquid crystal lens member can be set as shown in FIG. 1 , FIG. 3A and FIG. 3B , and the liquid crystal lens member 122 can be disposed on a light emitting surface of the positive lens module 120 ( FIG. 1 ). 1203 or a light incident surface 1201 (Fig. 3A). Even, the liquid crystal lens member 122 is disposed between the plurality of optical lenses 1202 (as shown in FIG. 3B).

Following the above, in an embodiment, the adjusting member 14 includes an adjusting wheel (not shown) for the user to manually adjust the position of at least one of the positive lens module 120 and the liquid crystal lens member 122. In yet another embodiment, the adjustment member 14 can also utilize electric power to adjust the position of at least one of the positive lens module and the liquid crystal lens member. Even in another embodiment, if the adjustment member is electrically driven, the adjustment member 14 includes a wireless communication module (not shown) for receiving an adjustment command of the user's wireless input. The adjustment members may be simultaneously or separately adjusted to the positive lens module 120 and the liquid crystal lens member 122. In still another embodiment, the adjustment member further includes a control button (not shown) for adjusting the voltage applied to the liquid crystal lens member. In a practical example, the housing of the head mounted display device may include a degree setting interface, which may be a manual input or a wireless sensing input, such as voice, Bluetooth or Wifi control, in an embodiment. After the user setting is completed, the position of the positive lens module 120 and the liquid crystal lens member 122 can be manually adjusted, and then the control button is pressed to apply a voltage to the liquid crystal lens module to generate a desired degree. In another embodiment, after the user is set, the user directly presses the electric control button to adjust the position of the positive lens module 120 and or the liquid crystal lens member 122, and then presses the control button to apply voltage to the liquid crystal lens module. Produce the required degree.

As shown in FIG. 4A and FIG. 4B , which is an operation example of the present invention, in an embodiment, the adjustment member includes, but is not limited to, a two-stage movement, for example, the lens module 12 can be adjusted to the position A (as shown in FIG. 4A, this embodiment defines the distance A from the display module 10 as position B) and position B (as shown in FIG. 4B, this embodiment defines the distance B from the display module 10 as position B), and the position A can be used to correct myopia. Position B is used to correct farsightedness, and 4D discrete degree correction is obtained from position A to position B system. For the user, if the degree of myopia and astigmatism or farsightedness and astigmatism is to be adjusted, the voltage applied to the liquid crystal lens module 122 can be adjusted to adjust the degree. For example, the position A can be corrected to a degree of myopia of 0 degrees. -400 degrees (0D ~ -4D (diopter) as shown in the figure, including myopic astigmatism); and position B can correct the degree of far vision from 0 degrees to 400 degrees (the degree shown in the figure is 0D ~ 4D, Contains hyperopic astigmatism). In this way, if the maximum value of the refractive power change provided by the original liquid crystal lens module is positive 4 diopter, the two-stage operation of an embodiment of the present invention can cover negative 4 diopter to positive 4 diopter. Therefore, it can be seen that the liquid crystal lens module can cover more correction ranges if the adjustment member is designed to be more segmented.

In one embodiment, as shown in FIG. 5, the positive lens module 120 includes a mirror 1204. The spectacles-compensated head-mounted display device 1 further includes a beam splitting member 16 disposed between the light-emitting side of the lens module 12 or the display module 10 and the lens module 12. The beam splitting member 16 includes at least one of a beam splitter 162 and a polarization beam splitter 164. In one embodiment, the display module 10 includes, but is not limited to, a reflective liquid crystal on silicon panel (LCoS panel) or a microdisplay.

In still another embodiment, the vision-compensated head-mounted display device further includes: a light guiding member disposed on the light-emitting side of the lens module, as shown in FIG. 6. The light guiding member 18 includes, but is not limited to, a waveguide element 182 and at least one diffractive element 184, and the diffractive element 184 is disposed on the light emitting surface and the light incident surface of the waveguide element 182. The technical means for how to adjust the degree has been described in the above embodiments, so that the embodiments of FIG. 5 and FIG. 6 will not be described again.

In summary, the present invention provides a head-mounted display device with vision compensation, which utilizes a fine adjustment of the segment type and an adjustment of the electronically controlled refractive index change of the liquid crystal lens module to achieve an adjustment range of a larger degree (including astigmatism). .

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed. Therefore, the scope of the patented scope of the invention should be construed as broadly construed in the

1‧‧‧ head-mounted display device
10‧‧‧ display module
12‧‧‧ lens module
120‧‧‧ positive lens module
1201‧‧‧Lighting surface
1202‧‧‧ optical lens
1203‧‧‧ light surface
1204‧‧‧Mirror
122‧‧‧Liquid lens components
14‧‧‧Adjusting components
16‧‧‧Distributing components
162‧‧‧beam splitter
164‧‧‧Polarizing beam splitter
18‧‧‧Light guiding members
182‧‧‧ Waveguide components
184‧‧‧diffractive components
2‧‧‧Users
P‧‧‧Light path
A‧‧‧ position
B‧‧‧ position

1 is a schematic structural view of a head-mounted display with vision compensation according to an embodiment of the present invention. 2A and 2B are structural diagrams of a head-mounted display with vision compensation according to different embodiments of the present invention. 3A and 3B are schematic diagrams showing the configuration of a lens module according to an embodiment of the invention. 4A and 4B are schematic diagrams showing an operation example of an embodiment of the present invention. FIG. 5 is a schematic structural diagram of a head-mounted display with vision compensation according to an embodiment of the present invention. FIG. 6 is a schematic structural diagram of a head-mounted display with vision compensation according to still another embodiment of the present invention.

1‧‧‧ head-mounted display device

10‧‧‧ display module

12‧‧‧ lens module

120‧‧‧ positive lens module

1202‧‧‧ optical lens

1203‧‧‧ light surface

122‧‧‧Liquid lens components

14‧‧‧Adjusting components

2‧‧‧Users

P‧‧‧Light path

Claims (17)

A head-mounted display device with vision compensation, comprising: a display module for displaying an image; a lens module disposed on one of the light-emitting paths of the display module for forming an enlarged image of the image For viewing by a user, the lens module includes: a positive lens module; and a liquid crystal lens member integrated with the positive lens module; and an adjustment member coupled to the lens module And a position for selectively adjusting at least one of the positive lens module and the liquid crystal lens member to compensate for abnormal vision of the user. The head-mounted display device with vision compensation according to claim 1, wherein the positive lens module comprises a plurality of optical lenses. The head-mounted display device with vision compensation according to claim 2, wherein the liquid crystal lens member is disposed between the plurality of optical lenses. The head-mounted display device with vision compensation according to claim 1, wherein the positive lens module comprises a mirror. The head-mounted display device with vision compensation according to claim 1, wherein the liquid crystal lens member is disposed on a light-emitting surface or a light-incident surface of the positive lens module. The head-mounted display device with vision compensation according to claim 1, wherein the abnormal vision is at least one of a nearsightedness, a farsightedness, and an astigmatism. The head-mounted display device with vision compensation according to claim 1, wherein the degree of the degree of compensation for the abnormal vision of the user comprises -400 degrees to 0 degrees. The head-mounted display device with vision compensation according to claim 1, wherein the degree of the degree of compensation for the abnormal vision of the user comprises 0 to 400 degrees. The visually compensated head mounted display device of claim 1, wherein the adjusting member comprises an adjusting wheel for the user to manually adjust the positive lens module and at least one of the liquid crystal lens members The location of the person. The head-mounted display device with vision compensation according to claim 1, wherein the adjusting member electrically drives the position of at least one of the positive lens module and the liquid crystal lens member. The visually compensated head mounted display device of claim 10, wherein the adjustment component comprises a wireless communication module for receiving an adjustment command of the user wireless input. The head-mounted display device with vision compensation according to claim 1, wherein the adjusting member further comprises a controller for adjusting a voltage applied to the liquid crystal lens module. The head-mounted display device with vision compensation according to claim 1, wherein the head-mounted display device comprises a degree setting interface, and the degree setting interface can be a manual input or a wireless sensing input. The head-mounted display device with vision compensation according to claim 1, further comprising: a beam splitting member disposed on the light-emitting side of the lens module or between the display module and the lens module. The head-mounted display device with vision compensation according to claim 14, wherein the beam splitting member comprises at least one of a beam splitter and a polarization beam splitter. The head-mounted display device with vision compensation according to claim 1, further comprising: a light guiding member disposed on the light-emitting side of the lens module. The head-mounted display device of claim 16, wherein the light guiding element comprises a waveguide element and at least one diffractive element, and the diffractive element is disposed on the light-emitting surface and the light-incident surface of the waveguide element.