CN201251647Y - Head-mounted display - Google Patents
Head-mounted display Download PDFInfo
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- CN201251647Y CN201251647Y CNU2008202080104U CN200820208010U CN201251647Y CN 201251647 Y CN201251647 Y CN 201251647Y CN U2008202080104 U CNU2008202080104 U CN U2008202080104U CN 200820208010 U CN200820208010 U CN 200820208010U CN 201251647 Y CN201251647 Y CN 201251647Y
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Abstract
The utility model relates to a head-mounted display which comprises a shell, a microdisplay panel, a liquid crystal zoom lens, a liquid crystal zoom lens controller and controller component. A light exit hole is arranged on one side of the shell; and the microdisplay panel and the liquid crystal zoom lens are arranged orderly between the inner wall of the shell at the side facing the light exit hole and the light exit hole. The microdisplay panel is used for displaying a received image signal into an image and outputting light which irradiates the image to the liquid crystal zoom lens; the liquid crystal zoom lens and the liquid crystal zoom lens controller are connected electrically for adjusting focus under the control of control voltage and concentrating lights to achieve a virtual image; and the controller component is used for controlling the liquid crystal zoom lens controller to output control voltage to the liquid crystal zoom lens. The head-mounted display can adjust focuses without the limit of application space and can ensure the definition of images that users are watching by adjusting the focuses of the lens. The head-mounted display has the advantages of small size, lightness and convenient adjustment.
Description
Technical field
The utility model relates to image device, particularly a kind of head-mounted display.
Background technology
Along with the continuous development of science and technology, increasing personal electric consumer products develop towards frivolous, small and exquisite direction, and most of now video play device is subject to screen size, can't obtain the video playback effect that makes the beholder satisfied.Thereby the mode that adopts optics to amplify little display panel amplifies the image of the small screen display panel, thereby can watch the image of tens cun sizes.
With the head-mounted display is example, the multiplying arrangement that has optical lens is installed in head-mounted display, just can realize above-mentioned functions, utilize optical lens that the subject image light that is formed on little display panel is assembled amplification, make people can see the virtual image clearly that amplifies several times, improved the display effect that people watch image.
Fig. 1 is the side structure synoptic diagram of existing head-mounted display, and referring to Fig. 1, this head-mounted display comprises little display panel 3, image amplifying device 4 and housing 2, in describing below, be left to, horizontal direction right side with horizontal direction left side among Fig. 1 is right; The vertical direction upside is a direction (bottom) under last direction (top), vertical direction downside are; Direction perpendicular to paper is a fore-and-aft direction.
Image amplifying device 4 is to forming the distinct image of amplifying after the convergence of rays of input, so that human eye 7 is watched.
Among Fig. 1, the center of little display panel 3, image amplifying device 4 and human eye 7 generally is positioned on the same horizontal line, and light is called the center light path by the light path that is formed centrally in little display panel 3 centers and the image amplifying device 4.
Above-mentioned image amplifying device 4 is the enlarger that has optical lens of head-mounted display, for example, can be convex lens, also can be optical lens group.
In the practical application, because people's eyesight has the problem of myopia or long sight greatly, and there is very big inconvenience in wearing spectacles for the user when similar devices such as use head-mounted display, traditional settling mode is for utilizing mechanic adjustment unit, change optical lens, distance between little display panel and the human eye, be that instrumentality distance and image distance size are regulated, but this can bring problems, for example focusing is subjected to the restriction of device application space, the degree of regulation variation, differ (being picture quality) and become big, the reliability variation, can not guarantee the sharpness of the image that the user watches, and increase head-mounted display weight etc.
The utility model content
In view of this, fundamental purpose of the present utility model is to provide head-mounted display, make focusing be not subjected to the device application space restriction, improve the sharpness of the image that the user watches.
For achieving the above object, the utility model provides head-mounted display, comprising: housing, first little display panel, liquid crystal zoom lens, liquid crystal zoom lens controller and control device, wherein,
Housing one side is provided with the beam projecting hole, and the beam projecting hole over against the inner walls and described beam projecting hole of a side between, fix little display panel and liquid crystal zoom lens successively;
Little display panel, the picture signal that is used for receiving is shown as image, and the light that will shine this image exports the liquid crystal zoom lens to;
The liquid crystal zoom lens is electrically connected with liquid crystal zoom lens controller, is used for focusing under the control Control of Voltage that the liquid crystal zoom lens controller of control device control is exported, and forms the virtual image after the convergence of rays to input;
Control device is electrically connected with liquid crystal zoom lens controller, is used to control liquid crystal zoom lens controller to liquid crystal zoom lens output control voltage.
As seen from the above technical solutions, the head-mounted display that the utility model provides, adopt liquid crystal (LiquidCrystal) zoom lens, control control voltage swing on the liquid crystal zoom lens by the user by control device, change the Liquid Crystal Molecules Alignment mode of liquid crystal layer, thereby change the focal length that refractive index changes the liquid crystal zoom lens according to voltage swing, realization is focused to image and convergent-divergent control, make the focusing of device not be subjected to the restriction of application space, and can adjust lens focus, guarantee the sharpness of the image that the user watches.This head-mounted display have volume little, in light weight, regulate easy.
Description of drawings
Fig. 1 is the side structure synoptic diagram of existing head-mounted display;
Fig. 2 adopts the side structure synoptic diagram of liquid crystal zoom lens for the utility model head-mounted display;
Fig. 3 is the side structure synoptic diagram of liquid crystal zoom lens among the utility model Fig. 2;
Fig. 4 is that the utility model embodiment one adopts the liquid crystal zoom lens to substitute the side structure synoptic diagram of existing lens;
Fig. 5 is that the utility model embodiment two adopts liquid crystal zoom lens and existing lens to constitute the side structure synoptic diagram of compound lens;
Fig. 6 is that the utility model embodiment three adopts liquid crystal zoom lens and existing lens to constitute the side structure synoptic diagram of compound lens;
Fig. 7 is the side structure synoptic diagram that the utility model embodiment four adopts the liquid crystal zoom lens group.
Label declaration in the accompanying drawing
1, the virtual image 2, housing
3, first little display panel 4, image amplifying device
5, the first liquid crystal zoom lens 6, the first liquid crystal zoom lens controller
7, human eye 8, sheet glass
9, base electrode layer 10, liquid crystal layer
11, control electrode layer 12, connecting circuit
13, the liquid crystal zoom lens of unactivated state
14, apply the liquid crystal zoom lens that changes convex lens behind the voltage into
15, apply the liquid crystal zoom lens that changes concavees lens behind the voltage into
20, the second liquid crystal zoom lens
22, beam projecting hole 23, liquid crystal frame
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is described in further detail.
The head-mounted display that the utility model proposes, image is focused and convergent-divergent control by adopting the liquid crystal zoom lens, because the adjustable focal length of liquid crystal zoom lens, make focusing not be subjected to the restriction of device application space and can guarantee the sharpness of the image that the user watches.This head-mounted display has characteristics such as volume is little, in light weight, adjusting is easy.
Fig. 2 is the side structure synoptic diagram of the utility model head-mounted display employing liquid crystal zoom lens, and referring to Fig. 2, this head-mounted display comprises: housing 2, first little display panel 3, the first liquid crystal zoom lens 5 and the first liquid crystal zoom lens controller 6, wherein,
First little display panel 3 is used to receive picture signal, display image, and the light that will shine this image exports the first liquid crystal zoom lens 5 to;
The first liquid crystal zoom lens 5, be electrically connected with the first liquid crystal zoom lens controller 6, be used under the control Control of Voltage that the first liquid crystal zoom lens controller 6 of control device (not shown) control is exported, focus, to forming the virtual image 1 by beam projecting hole 22 after the convergence of rays of input, so that human eye 7 is watched.
The first liquid crystal zoom lens controller 6 is electrically connected with the first liquid crystal zoom lens 5, is used under the control of control device, and output control voltage is controlled Liquid Crystal Molecules Alignment in the first liquid crystal zoom lens 5, thereby changes the focal length of the first liquid crystal zoom lens 5;
The first liquid crystal zoom lens controller can be the little process chip that is integrated on the control circuit board, controls voltage according to the instruction of control device input to the output of the first liquid crystal zoom lens by little process chip.
Control device is used for the control voltage swing of the first liquid crystal zoom lens controller, 6 outputs is controlled, be electrically connected with the first liquid crystal zoom lens controller 6, control device can be knob or button, regulate the control voltage swing of the first liquid crystal zoom lens controller 6 by the instruction of the turn knob or the input that pushes button, and then regulate and control the focal length of the first liquid crystal zoom lens 5 to 5 outputs of the first liquid crystal zoom lens.This control device can be positioned at the outer user's easy to reach position of housing.
The first liquid crystal zoom lens controller 6 can be placed according to actual needs flexibly in the position of housing 2.
Preferably, the first liquid crystal zoom lens amount controller can be one, is connected at two ends about in the of 5 with the first liquid crystal zoom lens, provides control voltage to the first liquid crystal zoom lens 5; Also can be two, lay respectively at the first liquid crystal zoom lens, 5 top and bottom, provide control voltage to the first liquid crystal zoom lens 5 simultaneously, about the connection of the first liquid crystal zoom lens controller, follow-up detailed description again.
Preferably, housing 2 is rectangular, at housing 2 bottom inwalls first bayonet slot and the second bayonet slot (not shown) are set respectively, and being fixed in inwall relevant position, housing 2 bottom, two bayonet slot extend to respectively along fore-and-aft direction and contact with both sides, housing 2 front and back inwall, certainly, in the practical application, two bayonet slot also can be extended predetermined distance along fore-and-aft direction according to actual needs, not necessarily contact with both sides, housing 2 front and back inwall.First little display panel 3 is placed in first bayonet slot, and the first liquid crystal zoom lens 5 is placed in second bayonet slot.
Certainly, can also on the inwall of both sides, housing 2 front and back, two the 3rd bayonet slot and two the 4th bayonet slot be set respectively, two the 3rd bayonet slot difference both sides, ccontaining first little display panel 3 front and back, 5 both sides before and after two the 4th respectively ccontaining first liquid crystal zoom lens of bayonet slot.It also can be the bayonet arrangement that adopts similar eyeglasses frame, housing inwall both sides, 2 front and back and up and down two ends form continuous bayonet slot, to improve first little display panel 3 and the first liquid crystal zoom lens, 5 structural strengths, simultaneously when head-mounted display falls or clashed into, first little display panel 3 and the first liquid crystal zoom lens, 5 positions are not changed, promptly have shockproof requirement.
In the practical application, also can be top/bottom with the first little display panel 3 and the first liquid crystal zoom lens 5, and/or, the both sides, front and back gluing in housing 2 the respective inner walls surface.
The first little display panel 3 and the first liquid crystal zoom lens 5 in housing 2 the position and between the two at interval distance can be provided with according to actual needs.
Preferably, this head-mounted display also comprises: the image amplifying device (not shown), and between the first little display panel 3 and the first liquid crystal zoom lens 5, to from the convergence of rays of the first little display panel, 3 outputs and be input to the first liquid crystal zoom lens 5.
Fig. 3 is the side structure synoptic diagram of liquid crystal zoom lens among the utility model Fig. 2, referring to Fig. 3, this liquid crystal zoom lens comprises: sheet glass 8, base electrode layer 9, liquid crystal frame 23, liquid crystal layer 10, control electrode layer 11 and connecting circuit 12, wherein, form the first liquid crystal zoom lens controller 6 by base electrode layer 9, control electrode layer 11 and connecting circuit 12
Preferably, sheet glass 8 symmetries are positioned at the outer both sides of the first liquid crystal zoom lens, 5 structures, sheet glass 8 bottoms are placed in second bayonet slot, further, also both sides, sheet glass 8 front and back can be received into the 4th bayonet slot respectively, to improve the structural stability of liquid crystal zoom lens, avoid this head-mounted display that injury broken or that displacement causes eyes takes place when being subjected to clashing into; Simultaneously, can also be to be placed in second bayonet slot when the liquid crystal zoom lens, and/or, during the 4th bayonet slot, can the conducting connecting circuit.
Voltage difference between base electrode voltage and the control electrode voltage forms the control voltage of liquid crystal zoom lens controller 6 outputs.
Preferably, in technological process, in the one side of sheet glass 8 towards liquid crystal layer 10, difference coating base electrode layer 9 and control electrode layer 11, the base electrode layer 9 of coating contacts applying with liquid crystal frame 23 with liquid crystal layer 10 again with control electrode layer 11.
Connecting circuit 12 is positioned at two ends, the end, control electrode layer 11 top, connects base electrode layer 9 and control electrode layer 11, provides base electrode voltage to base electrode layer 9, and provides control electrode voltage to control electrode layer 11.When the first liquid crystal zoom lens controller was one, the connecting circuit on control electrode layer 11 top linked to each other with base electrode layer 9 bottom, or the connecting circuit of control electrode layer 11 bottom links to each other with base electrode layer 9 top; When the first liquid crystal zoom lens controller is two, the connecting circuit on control electrode layer 11 top links to each other with base electrode layer 9 top and constitutes one first liquid crystal zoom lens controller, and the connecting circuit of control electrode layer 11 bottom links to each other with base electrode layer 9 bottom and constitutes another first liquid crystal zoom lens controller.
By changing the structural parameters of connecting circuit 12, can regulate the voltage of connecting circuit 12 outputs.
Liquid Crystal Molecules Alignment changes along with the change of control voltage in the liquid crystal layer 10, thereby changes the focal length of this liquid crystal zoom lens, promptly forms the concavees lens or the convex lens of different focal, the size of regulating the virtual image that forms.
In the practical application, the size of liquid crystal zoom lens can require to determine according to light path design.
Based on Fig. 2 and Fig. 3, at different situations, the concrete implementation of the utility model head-mounted display has many kinds.For example, can use existing lens to add the array mode of liquid crystal zoom lens, also can adopt single liquid crystal zoom lens, can also use the liquid crystal zoom lens group.And the liquid crystal zoom lens can be divided into convex lens and concavees lens.Lift specific embodiment below, the utility model is described in detail.
Embodiment one:
Fig. 4 is that the utility model embodiment one adopts the liquid crystal zoom lens to substitute the side structure synoptic diagram of existing lens, referring to Fig. 4, comprise the first little display panel 3 and the first liquid crystal zoom lens 5, in advance the control voltage on the first liquid crystal zoom lens 5 is set at an initial value, at this moment, the first liquid crystal zoom lens 5 is in unactivated state, i.e. the liquid crystal zoom lens 13 (representing with solid line among the figure) of unactivated state among the figure; When the user watches video image, if find image blurring, then can make adjusting to control voltage by control device, by regulating base electrode voltage, and/or control electrode voltage swing, change the control voltage swing of the first liquid crystal zoom lens controller, 6 outputs, thereby change the Liquid Crystal Molecules Alignment of liquid crystal layer 10, make the first liquid crystal zoom lens 5 become duty, promptly apply the liquid crystal zoom lens 14 (dotting among the figure) that changes convex lens behind the voltage among the figure, realize regulating the purpose of the first liquid crystal zoom lens, 5 focal lengths.This first liquid crystal zoom lens 5 can be applicable to myopia or farsighted person.
The control voltage initial value of setting can or be some fixed values for zero.
Embodiment two:
In embodiment one, owing to adopt single liquid crystal zoom lens, the enlargement ratio that needs is bigger, thereby, may acquire a certain degree of difficulty in the making of liquid crystal zoom lens, in addition, the enlargement ratio that needs is big, the control voltage of corresponding needed driving also can be bigger, causes its some difficulties on circuit is realized.
Thereby, in the present embodiment, can keep original image amplifying device 4, make image amplifying device 4 can be in original limited space by changing optical lens in the image amplifying device 4 and the distance between little display panel, thereby change the size that optical lens is assembled and the multiple of convergent-divergent is regulated image, in order to overcome that optical lens is subjected to the restriction of the finite space and image that high multiple can not be provided, at original image amplifying device 4 right-hand increase liquid crystal zoom lens, further image is amplified.
Fig. 5 is that the utility model embodiment two adopts liquid crystal zoom lens and existing lens to constitute the side structure synoptic diagram of compound lens, referring to Fig. 5, different with Fig. 4 is, also comprise image amplifying device 4, be positioned at the first liquid crystal zoom lens, 5 lefts, the light of 4 pairs first little display panel 3 irradiation image outputs of image amplifying device is assembled, and the first liquid crystal zoom lens 5 is as auxiliary adjustment, further the light of image amplifying device 4 outputs is assembled, formed the virtual image of amplifying.
At first the control voltage on the first liquid crystal zoom lens 5 is set at an initial value, the first liquid crystal zoom lens 5 is the liquid crystal zoom lens 13 of unactivated state; When the user uses this head-mounted display, when if user's eyesight is good, then do not make any change, if the user is when being myopia or farsighted person, then by the user according to s own situation, by the control device (not shown), for example, regulate the control voltage of first liquid crystal zoom lens controller output by the instruction of knob or button input, make this first liquid crystal zoom lens 5 apply the liquid crystal zoom lens 14 that changes convex lens behind the voltage into, further image is regulated.
In the present embodiment, owing to utilize original image amplifying device 4, the enlargement ratio that the liquid crystal zoom lens is needed is less, thereby, reduced the difficulty that the liquid crystal zoom lens is made, in addition, also reduced the control voltage of the driving that needs, it is easier that it is realized at circuit.
Embodiment three:
Fig. 6 is that the utility model embodiment three adopts liquid crystal zoom lens and existing lens to constitute the side structure synoptic diagram of compound lens, referring to Fig. 6, different with Fig. 5 is, when if the user is myopia or farsighted person, then by the user according to s own situation, by control device, for example, the control voltage of regulating first liquid crystal zoom lens controller output by knob or button makes this first liquid crystal zoom lens 5 apply the liquid crystal zoom lens 15 that changes concavees lens behind the voltage into.
Embodiment four:
Fig. 7 is the side structure synoptic diagram that the utility model embodiment four adopts the liquid crystal zoom lens group, referring to Fig. 7, different with Fig. 6 is, in the present embodiment, use the second liquid crystal zoom lens, 20 alternate image multiplying arrangements 4, promptly use two liquid crystal zoom lens of cascade to be combined as the liquid crystal zoom lens group.
Two liquid crystal zoom lens are respectively by independently controlling Control of Voltage separately, and promptly the second liquid crystal zoom lens is by the control Control of Voltage of second liquid crystal zoom lens controller (not shown) output.The second liquid crystal zoom lens and the first liquid crystal Zoom lens structure are similar, and first little display panel, the second liquid crystal zoom lens, the first liquid crystal zoom lens interval are each other set according to actual needs, do not repeat them here.
The second liquid crystal zoom lens is under the control Control of Voltage of second liquid crystal zoom lens controller output, the voltage drop of the i.e. base electrode voltage of the second liquid crystal zoom lens controller and control electrode voltage formation, change the Liquid Crystal Molecules Alignment in the second liquid crystal zoom lens liquid crystal layer, thereby change the refractive index of liquid crystal, and then the focal length of change liquid crystal zoom lens, be input to the first liquid crystal zoom lens to understanding coalescence accordingly from the light of first little display surface irradiation image output.
In the practical application, at first the control voltage on two liquid crystal zoom lens is set at a voltage initial value respectively, the voltage initial value of setting can be identical, also can be different.In use, when user's eyesight is good, then do not make any change, when if the user is myopia or farsighted person, then by the user according to s own situation, pass through control device, for example, regulate the control voltage that two liquid crystal zoom lens controllers are exported respectively by two knobs or two buttons, can be to regulate at the control voltage of one of them liquid crystal zoom lens, also can be to regulate simultaneously at the control voltage of two liquid crystal zoom lens respectively, can also be the control voltage-regulation based on one of them liquid crystal zoom lens, the control voltage-regulation of another liquid crystal zoom lens be auxilliary.
Two liquid crystal zoom lens of cascade, the second liquid crystal zoom lens can be convex lens or concavees lens at work, and the first liquid crystal zoom lens is convex lens at work.
In the practical application, can also adopt two above liquid crystal zoom lens to be combined as the liquid crystal zoom lens group of cascade, its control method and Fig. 7 are similar.In addition, also can change existing lens combination, will have lens combination now and change into reflection and amplify light path, auxiliary again with the liquid crystal zoom lens, and in light path design, liquid crystal zoom lens inner structure is made corresponding adjustment and get final product.
In the foregoing description, little display panel in the head-mounted display and liquid crystal zoom lens can be that eyes at human eye are provided with, also can be provided with at two eyes of human eye, when two eyes at human eye are provided with, fore-and-aft direction is provided with two groups of little display panels and liquid crystal zoom lens in housing, i.e. first little display panel, second little display panel, the first liquid crystal zoom lens, the 3rd liquid crystal zoom lens, first control device, second control device, constitute head-mounted display, second little display panel is positioned at first little display panel rear, promptly be in the same plane with respect to human eye, simultaneously towards the human eye direction with first little display panel.The 3rd liquid crystal zoom lens is corresponding to second little display panel, and both are identical at the relative position of left and right directions with the first liquid crystal zoom lens with first display panel at the relative position of left and right directions.First liquid crystal zoom lens of fore-and-aft direction setting and the 3rd liquid crystal zoom lens distance between two of the distance between the fore-and-aft direction and users adapt (in this was novel, two of users were positioned on the fore-and-aft direction).These two liquid crystal zoom lens difference forwards are in two of users, vertical with the center light path or angled with the center light path among a small circle, its particular location can be determined according to actual needs, the light path that first display panel and the first liquid crystal zoom lens form, and the 3rd light path of forming of display panel and the 3rd liquid crystal zoom lens, isolate by opaque position, be in relatively independent state, thereby light can not produce the phase mutual interference, and simultaneously the central shaft of two light paths is adapted to distance between two of the people.
The first liquid crystal zoom lens controller of controlling the first liquid crystal zoom lens works alone separately with the 3rd liquid crystal zoom lens controller of controlling the 3rd liquid crystal zoom lens, the control voltage swing of control device control corresponding liquid crystal zoom lens controller output, promptly first control device is used to control the control voltage of the first liquid crystal zoom lens controller to the output of the first liquid crystal zoom lens; Second control device is used to control the control voltage of the 3rd liquid crystal zoom lens controller to the output of the 3rd liquid crystal zoom lens.The first and the 3rd liquid crystal zoom lens controller also can be the little process chip that is integrated on the control circuit board, controls voltage to the first liquid crystal zoom lens and the output of the 3rd liquid crystal zoom lens by little process chip respectively according to the instruction of control device input.
In the practical application, also first little display panel in the head-mounted display and second little display panel can be merged into a little display panel, light-dividing device is set in head-mounted display, utilize light-dividing device to be divided into two light paths, be input to the first and the 3rd liquid crystal zoom lens respectively from the light of little display panel irradiation image output.The light-dividing device structure belongs to prior art, does not repeat them here.
As seen from the above-described embodiment, head-mounted display of the present utility model, can use existing lens to add the array mode of liquid crystal zoom lens, also can adopt single liquid crystal zoom lens, can also use the liquid crystal zoom lens group, make focusing not be subjected to the restriction of device application space, the user is by the control voltage swing on the control liquid crystal zoom lens, change the Liquid Crystal Molecules Alignment of liquid crystal layer, thereby change the focal length of liquid crystal zoom lens, realization is focused to image and convergent-divergent control, has improved focusing greatly and has been subjected to the restriction of device application space, and can guarantee the sharpness of the image that the user watches.Further, by bayonet slot is set in housing, ccontaining little display panel of bayonet slot and liquid crystal zoom lens have improved the structural stability of liquid crystal zoom lens, when head-mounted display is clashed into, have effectively protected eyes.And, this head-mounted display have volume little, in light weight, regulate easy.
More than lift preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle; any modification of being done, be equal to replacement, improvement etc.; all should be included within the protection domain of the present utility model; the interest field that the utility model is advocated should be as the criterion so that the utility model application scope is described, but not only limits to the foregoing description.
Claims (12)
1, a kind of head-mounted display is characterized in that, this head-mounted display comprises: housing, first little display panel, liquid crystal zoom lens, liquid crystal zoom lens controller and control device, wherein,
Housing one side is provided with the beam projecting hole, and the beam projecting hole over against the inner walls and described beam projecting hole of a side between, fix little display panel and liquid crystal zoom lens successively;
Little display panel, the picture signal that is used for receiving is shown as image, and the light that will shine this image exports the liquid crystal zoom lens to;
The liquid crystal zoom lens is electrically connected with liquid crystal zoom lens controller, is used for focusing under the control Control of Voltage that the liquid crystal zoom lens controller of control device control is exported, and forms the virtual image after the convergence of rays to input;
Control device is electrically connected with liquid crystal zoom lens controller, is used to control liquid crystal zoom lens controller to liquid crystal zoom lens output control voltage.
2, head-mounted display as claimed in claim 1, it is characterized in that, further comprise: the image amplifying device between described little display panel and described liquid crystal zoom lens is used for being input to described liquid crystal zoom lens to understanding coalescence from the light of described little display panel irradiation image output.
3, head-mounted display as claimed in claim 1 or 2 is characterized in that, described liquid crystal zoom lens comprises: sheet glass, base electrode layer, liquid crystal frame, liquid crystal layer, control electrode layer and connecting circuit, wherein,
Sheet glass is used to receive the light that described little display panel irradiation image is exported, and is input to described liquid crystal layer by the base electrode layer;
The base electrode layer contacts with liquid crystal frame towards the one side of liquid crystal layer, and the one side of liquid crystal layer contacts with sheet glass dorsad;
The control electrode layer contacts with liquid crystal frame towards the one side of liquid crystal layer, and the one side of liquid crystal layer contacts with sheet glass dorsad;
Connecting circuit connects base electrode layer and control electrode layer, is used for providing base electrode voltage to the base electrode layer, provides control electrode voltage to the control electrode layer;
Liquid crystal frame and base electrode layer and control electrode layer form seal cavity, in seal cavity, fill liquid crystal and form described liquid crystal layer, under base electrode voltage and control electrode Control of Voltage, change the Liquid Crystal Molecules Alignment in the liquid crystal layer, the light of importing is carried out the convergence of different focal.
4, head-mounted display as claimed in claim 1 is characterized in that, described housing bottom inwall is respectively arranged with first bayonet slot of ccontaining described little display panel and second bayonet slot of ccontaining described liquid crystal zoom lens.
5, head-mounted display as claimed in claim 4 is characterized in that, the both sides inwall is respectively arranged with the 3rd bayonet slot of both sides, ccontaining described little display panel front and back and the 4th bayonet slot of both sides, ccontaining described liquid crystal zoom lens front and back before and after the described housing.
6, head-mounted display as claimed in claim 1 is characterized in that, described little display panel and described liquid crystal zoom lens are gluing in described inner walls.
7, head-mounted display as claimed in claim 1 or 2 is characterized in that, described control device comprises: knob or button.
8, head-mounted display as claimed in claim 1 is characterized in that, described liquid crystal zoom lens is one or two, and accordingly, described liquid crystal zoom lens controller is one or two;
When the liquid crystal zoom lens is two,
And the beam projecting hole over against the inner walls and described beam projecting hole of a side between, fix described little display panel, the first liquid crystal zoom lens, the second liquid crystal zoom lens successively;
Described control device is two knobs or two buttons.
9, head-mounted display as claimed in claim 1 is characterized in that, described little display panel is one or two, and accordingly, described liquid crystal zoom lens, described liquid crystal zoom lens controller and described control device are one or two;
When little display panel is two,
First little display panel, the picture signal that is used for receiving is shown as image, and the light that will shine this image exports the first liquid crystal zoom lens to;
The first liquid crystal zoom lens is electrically connected with the first liquid crystal zoom lens controller, is used for focusing under the control Control of Voltage, forms the virtual image after the convergence of rays to input;
First control device is used to control the control voltage that the first liquid crystal zoom lens controller is exported;
Described second little display panel is positioned at described first little display panel rear;
Described the 3rd liquid crystal zoom lens is positioned at the described first liquid crystal zoom lens rear, is electrically connected with described the 3rd liquid crystal zoom lens controller, is used for focusing under the control Control of Voltage, forms the virtual image after the convergence of rays to input;
Distance between before and after described first liquid crystal zoom lens and described the 3rd liquid crystal zoom lens center and the distance between two centers of user adapt;
Second control device is used to control the control voltage that the 3rd liquid crystal zoom lens controller is exported.
10, head-mounted display as claimed in claim 9 is characterized in that, the described first liquid crystal zoom lens is vertical with the center light path respectively with described the 3rd liquid crystal zoom lens or fluctuating in the angle among a small circle with the center light path.
11, head-mounted display as claimed in claim 9, it is characterized in that, described first liquid crystal zoom lens controller and described the 3rd liquid crystal zoom lens controller are the little process chip that is integrated on the control circuit board, control little process chip respectively to the first liquid crystal zoom lens and the 3rd liquid crystal zoom lens output control voltage by control device.
12, head-mounted display as claimed in claim 9, it is characterized in that, further comprise light-dividing device, utilize light-dividing device to be divided into two light paths, be input to the first liquid crystal zoom lens and the 3rd liquid crystal zoom lens respectively from the light of described little display panel irradiation image output.
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| CNU2008202080104U CN201251647Y (en) | 2008-08-20 | 2008-08-20 | Head-mounted display |
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| CNU2008202080104U CN201251647Y (en) | 2008-08-20 | 2008-08-20 | Head-mounted display |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542921A (en) * | 2010-12-22 | 2012-07-04 | 黄志奇 | HMD (Head Mounted Display) drive control structure under parametrical adaptive control |
| CN103487938A (en) * | 2013-08-28 | 2014-01-01 | 成都理想境界科技有限公司 | Head mounted display |
| WO2014190807A1 (en) * | 2013-05-31 | 2014-12-04 | International Business Machines Corporation | Auto focus device and method for liquid crystal display |
| CN104238118A (en) * | 2013-06-24 | 2014-12-24 | 惠州市华阳多媒体电子有限公司 | Projector of head-up display |
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