CN208607434U - Optical device - Google Patents
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- CN208607434U CN208607434U CN201821014315.1U CN201821014315U CN208607434U CN 208607434 U CN208607434 U CN 208607434U CN 201821014315 U CN201821014315 U CN 201821014315U CN 208607434 U CN208607434 U CN 208607434U
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Abstract
The utility model discloses a kind of optical devices.The equipment includes lens, light adjusting device and installation position, the installation position is configurable for installation function module, the light adjusting device is configurable for ambient is stopped to pass through the lens and being irradiated in the functional module, or reduces across the lens and the intensity of light that is irradiated in the functional module.By the way that light adjusting device is arranged, it can effectively stop or weaken the light on lens lighting to functional module, avoid energy accumulating, and burn or damage functional module.
Description
Technical field
The utility model relates to optical technical fields, more particularly, to a kind of optical device.
Background technique
Show in equipment that display is divided into left and right two parts, shows what images of left and right eyes was seen respectively in existing VR
Image.Since the image that images of left and right eyes is respectively seen is variant, so 3D effect is presented in the brain.Optical mirror slip is convex lens,
The image of display is amplified.Since by optical system, the visual angle of scene seen by person is bigger, for example, can achieve
100 °, so the telepresenc that user experiences can greatly be enhanced.Meanwhile the posture on head can be transmitted to by attitude detection system
Computer, the field angle that computer can be seen according to the pose adjustment on head, to make one seemingly to watch the same, usual handle in reality
This experience is known as immersion experience.
However, existing optical lens is a magnifying glass.Under the irradiation of external strong light, lens are by light focusing.It is burnt
Point is fallen on the screen, high temperature is formed in focus, to burn screen.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above technical problems.
Utility model content
One purpose of the utility model is to provide a kind of new solution of optical device.
It is according to the present utility model in a first aspect, providing a kind of optical device.The equipment includes lens, light adjusting dress
It sets and installation position, the installation position is configurable for installation function module, the light adjusting device is configurable for hindering
Gear ambient passes through the lens and is irradiated in the functional module, or reduces across the lens and be irradiated to described
The intensity of light in functional module.
It optionally, further include sensing device, the sensing device is configurable for sensing the position of the optical device,
Under conditions of the sensing device senses are removed to the optical device from user's head, the light adjusting device is opened,
To stop ambient to pass through the lens and be irradiated in the functional module, or reduces across the lens and be irradiated to
The intensity of light in the functional module.
Optionally, the light adjusting device is between the lens and the installation position or the lens are located at
Between the light adjusting device and the installation position.
Optionally, the light adjusting device includes liquid crystal light valve component, and the liquid crystal light valve component includes the first liquid crystal
Mould group and be located at first liquid crystal module the two sides along optical path direction the first polaroid and the second polaroid, institute
The second polaroid is stated between first liquid crystal module and the functional module.
Optionally, first polaroid is identical or vertical with the polarization direction of second polaroid.
Optionally, first liquid crystal module is configured as making incident light rotation under conditions of applying setting voltage
It turn 90 degrees.
Optionally, first liquid crystal module is TN type liquid crystal.
Optionally, the functional module is LCD LCD screen；Or
The functional module is OLED liquid crystal screen curtain, further include setting second polaroid and the functional module it
Between quarter-wave plate, the polarization direction of first polaroid and second polaroid and the quarter-wave plate
0 optical axis is in 45 ° of angles.
Optionally, the lens, the light adjusting device and the functional module are coaxial setting, and three
Main direction is parallel to each other.
Optionally, the light adjusting device is shutter.
Optionally, the functional module is display screen, further includes being arranged in second polaroid and the display screen
The second liquid crystal module between curtain, first polaroid are identical with the polarization direction of second polaroid.
Optionally, the long axis direction of the liquid crystal of the long axis direction and the second liquid crystal module of the liquid crystal of first liquid crystal module
Polarization direction with first polaroid is in 45 ° of angles.
Optionally, the lens are Fresnel lenses.
Optionally, the material of the lens is plastics, glass or resin.
It can effectively stop or weaken to wear by the way that light adjusting device is arranged according to one embodiment of the disclosure
The light on lens lighting to functional module is crossed, energy accumulating is avoided, and burns or damage functional module.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiments of the present invention, and
And together with its explanation for explaining the principles of the present invention.
Fig. 1 is the structural schematic diagram of the optical device of one embodiment according to the present utility model.
Fig. 2 is the structural schematic diagram of another optical device of one embodiment according to the present utility model.
Fig. 3 is the structural schematic diagram of another optical device of one embodiment according to the present utility model.
Fig. 4 is the structural schematic diagram of the shutter of one embodiment according to the present utility model.
Description of symbols:
11: Fresnel lenses；12: the first liquid crystal modules；13: the first polaroids；14: the second polaroids；15: the second liquid crystal
Mould group；16:LCD LCD screen；17: quarter-wave plate；18:OLED LCD screen；19: blade；20: bracket.
Specific embodiment
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
One embodiment according to the present utility model provides a kind of optical device.As shown in Figs. 1-2, the optical device
VR equipment, AR equipment etc. can be, but not limited to,.It is illustrated by taking VR equipment as an example below.
The optical device includes lens, light adjusting device and installation position.Installation position is configurable for installation function mould
Block.For example, functional module is display screen, circuit board, processor etc..In this example embodiment, functional module is display screen, such as
LCD screen.Light adjusting device is configurable for that ambient is stopped to pass through lens and is irradiated in functional module, or
It reduces across lens and the intensity of light that is irradiated in functional module.
Preferably, lens are Fresnel lenses 11.Fresnel lenses 11 are the lens with positive light coke, have amplification effect
The excellent feature of fruit.It includes two significant surface types: the Fei Nie towards the aspherical of human eye direction and towards functional module direction
That face.Two faces are coaxial with smooth surface central point.The material of Fresnel lenses 11 can be plastics, glass or resin.Above-mentioned material
The translucent effect of the Fresnel lenses 11 of material is good.Certainly, lens are the common knowledge of this field, and those skilled in the art can be with
It is configured according to actual needs.
Optionally, the aspherical radius of Fresnel lenses 11 is 45mm-150mm, and circular cone coefficient is -10-0.In the example
In son, aspherical radius is=50mm, and circular cone coefficient is -3.
Optionally, the radius of the Fresnel surface of Fresnel lenses 11 is -15mm-35mm, and circular cone coefficient is -10-0.At this
In example, the radius of Fresnel surface is -29.7mm, and circular cone coefficient is -1.
Optionally, 11 bore of Fresnel lenses is 30mm-60mm, with a thickness of 3mm-10mm.Fresnel lenses 11 it is effective
Light hole is circle, radius 24mm.
In the utility model embodiment, by be arranged light adjusting device, can effectively stop or weaken across
Light on lens lighting to functional module avoids energy accumulating, and burns or damage functional module.
Optionally, light adjusting device is between lens and installation position or lens are located at light adjusting device and peace
It fills between position, as long as can stop or weaken the light on lens lighting to functional module.Wherein, when be located at lens and
When between installation position, light adjusting device not will increase the space of optical device, and the appearance of optical device is good.
In one example, optical device further includes sensing device.Sensing device is configurable for sensing optical device
Position.Under conditions of sensing device senses to optical device are removed from user's head, light adjusting device is opened, to stop
Ambient is passed through and lens and is irradiated in functional module, or reduce across lens and the light that is irradiated in functional module it is strong
Degree.
For example, sensing device includes infrared sensor.The position of the accurate detection human body of infrared sensor energy, so that it is determined that
The position of optical device.
Under conditions of sensing device senses are worn to user's head to optical device, optical device normal use at this time,
Light adjusting device is opened, to allow users to the image for being just commonly seen display screen curtain.
Sensor device can effectively improve the degree of automation of optical device, realize the automatic of the protection to functional module
Control.
Certainly, sensing device can also be other equipment, such as pressure sensor etc., those skilled in the art can basis
Actual needs is selected.
In other examples, optical device further includes manual switch.When user removes optical device from head, manually
Switch is closed, to close light adjusting device, to stop or weaken light.Optical device is worn to head in user
When, manual switch is turned on, and to open light adjusting device, optical device is can be used normally in user.
In other examples, optical device further includes microswitch.Optical device will be taken from head in user in user
When lower, microswitch bounces automatically, to close light adjusting device, to stop or weaken light.In user by optical device
When being worn to head, microswitch is pressed, and to open light adjusting device, optical device is can be used normally in user.
Microswitch and manual switch are physical switch, while it is desirable to touching or pressing, but its durability and reliability
It is high.
In one example, light adjusting device includes liquid crystal light valve component.Liquid crystal light valve component includes the first liquid crystal mould
It organizes 12 and is located at the first polaroid 13 and the second polaroid 14 of the two sides along optical path direction of the first liquid crystal module 12.
Second polaroid 14 is between the first liquid crystal module 12 and functional module.Apply voltage to liquid crystal module by first or breaks
Electricity controls the polarization of liquid crystal, to make incident light deflection or directly pass through.Ambient sequentially passes through the first polarisation
Piece 13, the first liquid crystal module 12 and the second polaroid 14, to effectively be weakened or be stopped.Preferably, the first liquid crystal mould
Group 12 is TN type liquid crystal.The liquid crystal of this type is from a wealth of sources, at low cost.
Preferably, effective hole of the first liquid crystal module 12, the first polaroid 13 and the second polaroid 14 is circle.Pass through this
Kind mode, liquid crystal light valve component, which can be formed the ambient from all angles, to be stopped or weakens.For example, effective hole
Radius is 27mm.
Preferably, the first polaroid 13 is identical or vertical with the polarization direction of the second polaroid 14.In this example embodiment, it shows
Display screen curtain is LCD LCD screen 16.LCD LCD screen 16 can issue linearly polarized light.
The optical axis direction of the liquid crystal of first liquid crystal module 12 and with the first polaroid 13 at 45 degree.In 13 He of the first polaroid
Under the conditions of the polarization direction of second polaroid 14, in the closing of VR equipment or dormant state, the first liquid crystal module 12 is not applied
Making alive, liquid crystal do not polarize.When ambient is injected, become linearly polarized light in the first polaroid 13, then passes through the first liquid
Brilliant mould group 12.The liquid crystal of first liquid crystal module 12 has rotation effect, incident ray can be made to deflect, and then weakens across the
The light of two polaroids 14.Preferably, the first liquid crystal module 12 is configured as making incident light under conditions of applying setting voltage
Line is rotated by 90 °, so that incident ray can be ended by the second polaroid 14.In this way, liquid crystal light valve component, which is in, closes shape
State effectively can stop ambient to be injected.
In VR opening of device, the first liquid crystal module 12 is applied voltage, and the first liquid crystal module 12 polarizes at this time.Linear polarization
Light is issued from display screen, into the second polaroid 14.Then, linearly polarized light enters the first liquid crystal module 12, due to being applied
Making alive event the first liquid crystal module 12 polarization, therefore rotation effect will not be generated, therefore the polarization direction of incident ray does not rotate, directly
It connects from the first polaroid 13 and projects.User is it is observed that show the image of screen.
In the case that the polarization direction of the first polaroid 13 and the second polaroid 14 is vertical, in 12 quilt of the first liquid crystal module
When applying voltage, liquid crystal light valve component is closed, so that ambient be stopped to enter, the first liquid crystal module 12 is not applied to voltage
When, liquid crystal light valve component is opened, to enable users to normal use optical device.
In another example, display screen is OLED liquid crystal screen curtain 18.OLED liquid crystal screen curtain 18 can issue circular polarization
Light.For example, the resolution ratio of OLED liquid crystal screen curtain 18 is 2160*2160, effective display area domain is having a size of 60mm*60mm.OLED liquid
The polarization direction of the emergent light of brilliant screen 18 is parallel with the polarization direction of the first polaroid 13.
In this example embodiment, optical device further includes the quarter-wave being arranged between the second polaroid 14 and functional module
Piece 17.Quarter-wave plate 17 is used to the circularly polarized light that OLED liquid crystal screen curtain 18 issues being converted to linearly polarized light.First polarisation
0 optical axis of the polarization direction of piece 13 and the second polaroid 14 and quarter-wave plate 17 is in 45 ° of angles.
By taking the first polaroid 13 is identical with the polarization direction of the second polaroid 14 as an example.In VR opening of device, the first liquid
Brilliant mould group 12 is applied voltage, liquid crystal polarization.Circular polarization light is issued from OLED liquid crystal screen curtain 18, into quarter-wave plate
17, circularly polarized light is converted into linearly polarized light at this time.Linearly polarized light enters the second polaroid 14, subsequently into the first liquid crystal module
12, it since the first liquid crystal module 12 is applied voltage and polarizes, therefore does not generate rotation effect, therefore the polarization of incident ray
Direction does not rotate, directly from the first polaroid 13 project, user can normal observation to show screen image.It is closed in VR equipment
When closing, liquid crystal light valve component is closed, to stop ambient incident.
In one example, lens, light adjusting device and functional module, such as display screen are coaxial setting, and
And the main direction of three is parallel to each other.Coaxial setting refers to that the geometric center of three is located on the same line.Pass through this side
Formula, light adjusting device can form effective ground resistance gear to the ambient from different directions or weaken.
Certainly, even if there are installation errors for the relative position of three, it can also stop or weaken ambient.
For the VR equipment of replaceable display screen, the polarization direction that different LCD screens emit beam is inconsistent
's.On the basis of the short side of LCD screen, there are ± 45 °, 0 °, 90 ° are waited linearly polarized lights, non-linear polarization light, such as full wave circle
There are the elliptically polarized lights of polarization state difference for polarised light and different-waveband.The light that the LCD screen of different polarization states issues passes through
After liquid crystal light valve component, it is difficult to guarantee that light can be normal through, so that light emission rate is reduced, the matter for the image that user sees
Amount decline.
To solve the above-mentioned problems, in one example, as shown in figure 3, optical device further includes being arranged in the second polarisation
The second liquid crystal module 15 between piece 14 and display screen.First polaroid 13 is identical with the polarization direction of the second polaroid 14.
In this example embodiment, the first polaroid 13 and the first liquid crystal module 12 constitute liquid crystal cut out tab together.Second polaroid 14 and second
Liquid crystal module 15 constitutes liquid crystal compensation piece together.The long axis direction of the liquid crystal of first liquid crystal module 12 and the second liquid crystal module 15
The polarization direction of the long axis direction of liquid crystal and the first polaroid 13 is in 45 ° of angles.
In this example embodiment, when VR opening of device, linear polarization light is issued from screen, into liquid crystal compensation piece.According to liquid crystal
The polarization state that screen emits beam makes a choice to liquid crystal compensation piece: in the polarization state of polarization of light state and the second polaroid 14
In the case where parallel, the second liquid crystal module 15 does not apply voltage, at this point, the liquid crystal molecule of the second liquid crystal module 15 does not rotate.By
There is optical activity in the liquid crystal of the second liquid crystal module 15, revolved so that light retrodeviates polarization state by the second liquid crystal module 15
Turn, light projects after passing through the second polaroid 14；In the polarization state of the light situation parallel with the polarization state of the second polaroid 14
Under, the second liquid crystal module 15 applies voltage, and the liquid crystal of the second liquid crystal module 15 loses optical activity at this time.Light passes through the second liquid crystal
It does not change after mould group 15 and is projected from the second polaroid 14.Light subsequently enters liquid crystal cut out tab, at this point, the first liquid crystal mould
Group 12 applies voltage and rotates, from without optical activity.After the first liquid crystal module 12, polarization of light direction is not
Become, and is projected from the first polaroid 13.In this way, compensating plate can effectively improve light extraction efficiency, to improve
The quality of image.
In VR opening of device, polarization light is issued from screen, into compensating plate.It is emitted beam according to LCD screen inclined
Polarization state makes a choice to liquid crystal compensation piece: in polarization of light state and the second polaroid 14 as circularly polarized light, or it is inclined for line
Shake light and and the second polaroid 14 direction at 45 degree of angles in the case where, the liquid crystal of liquid crystal compensation piece does not apply voltage, therefore liquid crystal
Molecule does not rotate, and liquid crystal has optical activity at this time.Polarization of light state rotates after light passes through the second liquid crystal module 15, passes through liquid crystal
After compensating plate, 50% energy of light losing.Light subsequently enters liquid crystal cut out tab, and the first liquid crystal module 12 applies voltage, makes liquid
Crystalline substance rotation, the first liquid crystal module 12 does not have optical activity at this time, and after light passes through the first liquid crystal module 12, polarization direction is constant,
And it is projected from the first polaroid 13.
When VR equipment is closed, the first liquid crystal module 12 of liquid crystal cut out tab does not apply voltage, the first liquid crystal module 12
Liquid crystal has optical activity.When ambient is injected, by the first polaroid 13, extraneous right light certainly becomes linearly polarized light.Light
After the first liquid crystal module 12, polarization direction is rotated by 90 ° line.Then, ended by the second polaroid 14.Due to liquid crystal compensation
Piece is not on the focal plane of lens, so light does not converge, and then can not injure compensating plate.
Preferably, the first polaroid 13 and effective light hole of the first liquid crystal module 12 are circle.Effective aperture is 30mm-
70mm.First liquid crystal module 12 with a thickness of 0.5mm-5mm.In this way, the image that user observes is apparent, picture quality is good.
Preferably, the second polaroid 14 and effective light hole of the second liquid crystal module 15 are circle, effective aperture 30mm-
70mm.Second liquid crystal module 15 with a thickness of 0.5mm-5mm.
In this embodiment, the diameter of the second polaroid 14 is 55mm.The diameter of second liquid crystal module 15 is 55mm, thickness
For=1mm.The diameter of first polaroid 13 is 50mm.The diameter of first liquid crystal module 12 is 50mm, with a thickness of 1mm.
Preferably, the Fresnel surface of Fresnel lenses 11 and the first polaroid 13 are apart from for 0.5mm-30mm.In the example
In, which is=5mm.
Preferably, the surface of the close display screen of the first liquid crystal module 12 is 0.5mm- at a distance from the second polaroid 14
30mm.In this example embodiment, which is=5mm.
Preferably, the surface of the close display screen of the first liquid crystal module 12 is at a distance from the surface of display screen
0.5mm-40mm.In this example embodiment, which is 25mm.
In one example, light adjusting device is shutter.As shown in figure 4, for example, shutter includes bracket 20 and blade
19.The middle part of bracket 20 forms through-hole.Multiple blades 19 are rotatably arranged on bracket 20, and are set uniformly around through-hole
It sets.Multiple blades 19 rotate around respective shaft, to be turned on or off through-hole.The ambient when through-hole is closed
It can not pass through, to will not cause to damage to functional module；When through-hole is turned on, user being capable of normal use VR equipment.
Certainly, light adjusting device is not limited to the above embodiments, and those skilled in the art can carry out according to actual needs
Setting.
Although being described in detail by some specific embodiments of the example to the utility model, this field
It is to be understood by the skilled artisans that example above merely to be illustrated, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments
It modifies.The scope of the utility model is defined by the following claims.
Claims (14)
1. a kind of optical device, which is characterized in that including lens, light adjusting device and installation position, the installation position is configured
For for installation function module, the light adjusting device is configurable for that ambient is stopped to pass through the lens and irradiates
Onto the functional module, or reduce across the lens and the intensity of light that is irradiated in the functional module.
2. optical device according to claim 1, which is characterized in that further include sensing device, the sensing device is matched
It is set to the position for sensing the optical device, is removed in the sensing device senses to the optical device from user's head
Under conditions of, the light adjusting device is opened, to stop ambient to pass through the lens and be irradiated to the functional module
On, or reduce across the lens and the intensity of light that is irradiated in the functional module.
3. optical device according to claim 1, it is characterised in that, the light adjusting device is located at the lens and institute
It states between installation position or the lens is between the light adjusting device and the installation position.
4. optical device according to claim 1, it is characterised in that, the light adjusting device includes liquid crystal light valve arrays
Part, the liquid crystal light valve component include the first liquid crystal module and be located at first liquid crystal module along optical path direction
The first polaroid and the second polaroid of two sides, second polaroid are located at first liquid crystal module and the functional module
Between.
5. optical device according to claim 4, it is characterised in that, first polaroid and second polaroid
Polarization direction is identical or vertical.
6. optical device according to claim 4, it is characterised in that, first liquid crystal module is configured as setting in application
Under conditions of constant voltage, it is rotated by 90 ° incident light.
7. optical device according to claim 6, it is characterised in that, first liquid crystal module is TN type liquid crystal.
8. optical device according to claim 4, it is characterised in that, the functional module is LCD LCD screen；Or
The functional module is OLED liquid crystal screen curtain, further includes being arranged between second polaroid and the functional module
The polarization direction of quarter-wave plate, first polaroid and second polaroid and 0 light of the quarter-wave plate
Axis is in 45 ° of angles.
9. optical device according to claim 1, it is characterised in that, the lens, the light adjusting device and institute
Stating functional module is coaxial setting, and the main direction of three is parallel to each other.
10. optical device according to claim 1, it is characterised in that, the light adjusting device is shutter.
11. optical device according to claim 4, which is characterized in that the functional module is display screen, further includes setting
The second liquid crystal module between second polaroid and the display screen is set, first polaroid and described second is partially
The polarization direction of mating plate is identical.
12. optical device according to claim 11, it is characterised in that, the long axis side of the liquid crystal of first liquid crystal module
The polarization direction of long axis direction and first polaroid to the liquid crystal with the second liquid crystal module is in 45 ° of angles.
13. optical device according to claim 1, it is characterised in that, the lens are Fresnel lenses.
14. optical device according to claim 1, it is characterised in that, the material of the lens is plastics, glass or tree
Rouge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014315.1U CN208607434U (en) | 2018-06-28 | 2018-06-28 | Optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014315.1U CN208607434U (en) | 2018-06-28 | 2018-06-28 | Optical device |
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| Publication Number | Publication Date |
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| CN208607434U true CN208607434U (en) | 2019-03-15 |
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ID=65667325
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681070A (en) * | 2018-06-28 | 2018-10-19 | 青岛小鸟看看科技有限公司 | Optical device |
| CN115826250A (en) * | 2023-02-14 | 2023-03-21 | 南昌龙旗智能科技有限公司 | Lens module adjusting method and device of VR (virtual reality) equipment |
-
2018
- 2018-06-28 CN CN201821014315.1U patent/CN208607434U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681070A (en) * | 2018-06-28 | 2018-10-19 | 青岛小鸟看看科技有限公司 | Optical device |
| CN115826250A (en) * | 2023-02-14 | 2023-03-21 | 南昌龙旗智能科技有限公司 | Lens module adjusting method and device of VR (virtual reality) equipment |
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