CN110208948A - Optical system and virtual reality device with it - Google Patents
Optical system and virtual reality device with it Download PDFInfo
- Publication number
- CN110208948A CN110208948A CN201910479425.8A CN201910479425A CN110208948A CN 110208948 A CN110208948 A CN 110208948A CN 201910479425 A CN201910479425 A CN 201910479425A CN 110208948 A CN110208948 A CN 110208948A
- Authority
- CN
- China
- Prior art keywords
- polarized light
- reflective polarizer
- optical system
- phase delay
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
- G02B2027/0114—Head-up displays characterised by optical features comprising device for genereting colour display comprising dichroic elements
Abstract
The present invention discloses a kind of optical system and the virtual reality device with it, optical system includes display unit, reflective polarizer and microscope group along light transmission direction sequence, optical system further includes phase delay chip, phase delay chip includes first phase delay piece, and first phase postpones piece and is set to reflective polarizer close to the side of display unit；Microscope group first surface or second surface are equipped with optical splitter；The incident ray that display unit issues is reflected after first phase postpones piece by reflective polarizer, it again passes by first phase and postpones directive microscope group after piece, after the spectrophotometric reflection by microscope group, postpone piece by first phase, projects optical system from reflective polarizer.The present invention provides a kind of optical system and the virtual reality device with it, solves the light in the prior art by the optical system of virtual reality device and is easy to produce ghost, influences the problem of user uses virtual reality device.
Description
Technical field
It is set the present invention relates to optical image technology field more particularly to a kind of optical system and with its virtual reality
It is standby.
Background technique
Virtual reality technology is to generate a kind of simulated environment using computer, and user is made to be immersed to the technology in the environment,
Wherein, the optical system of virtual reality device generallys use single element lens or the mode of multi-disc lens combination is realized, incident ray
When by optical system, reflection light can be generated due to lens surface, reflection light is by optical system and after entering human eye
Ghost is formed, to influence use of the user to virtual reality device.
Summary of the invention
The present invention provides a kind of optical system and the virtual reality device with it, it is intended to solve in the prior art by void
The light of the optical system of quasi- real world devices is easy to produce ghost, influences the problem of user uses virtual reality device.
To achieve the above object, the invention proposes a kind of optical system, the optical system is suitable along light transmission direction
Sequence includes display unit, reflective polarizer and microscope group,
The center vertical line of the display unit intersects with the extended line of the optical axis of the microscope group；
The microscope group includes close to the first surface of the reflective polarizer and far from the reflective polarizer
Second surface；
The optical system further includes phase delay chip, and the phase delay chip includes first phase delay piece, and described the
One phase delay chip is set to the reflective polarizer close to the side of the display unit；
The first surface or second surface are equipped with optical splitter；
The incident ray that the display unit issues becomes the first linearly polarized light, institute after the first phase postpones piece
The polarization direction for stating the first linearly polarized light is identical as the reflection axis direction of the reflective polarizer, the first linearly polarized light quilt
The first phase delay piece is returned to after the reflective polarizer reflection, the first circle for becoming rotation property identical as incident ray is inclined
Shake light or the first elliptically polarized light, and microscope group described in first circularly polarized light or the first elliptically polarized light directive is described
Optical splitter transmission and reflection, transmitted ray are transmitted to human eye after projecting the microscope group from the second surface；Reflection light becomes
Second circularly polarized light or the second elliptically polarized light, the rotation phase of the rotation of second circularly polarized light and first circularly polarized light
Instead, the rotation of second elliptically polarized light is opposite with the rotation of first elliptically polarized light；Second circularly polarized light or
Second elliptically polarized light becomes the second linearly polarized light, second linear polarization after again passing by the first phase delay piece
Light projects the optical system from reflective polarizer transmission.
Optionally, the angle of the retardation axis of the axis of reflection of the reflective polarizer and first phase delay piece is 45
Degree.
Optionally, the first phase delay piece is quarter wave plate.
Optionally, the phase delay chip includes that first phase delay piece and second phase postpone piece；The first phase
Postpone piece and be set to the reflective polarizer close to a side surface of the display unit, and close to one end of the display unit
Setting, second phase delay piece are set to the reflective polarizer close to a side surface of the display unit, and close
One end of the microscope group is arranged；
The incident ray that the display unit issues becomes the first linearly polarized light, institute after the first phase postpones piece
The polarization direction for stating the first linearly polarized light is identical as the reflection axis direction of the reflective polarizer, the first linearly polarized light quilt
The first phase delay piece is returned to after the reflective polarizer reflection, the first circle for becoming rotation property identical as incident ray is inclined
Shake light or the first elliptically polarized light, and microscope group described in first circularly polarized light or the first elliptically polarized light directive is described
Optical splitter transmission and reflection, transmitted ray are transmitted to human eye after projecting the microscope group from the second surface；Reflection light becomes
Second circularly polarized light or the second elliptically polarized light, the rotation phase of the rotation of second circularly polarized light and first circularly polarized light
Instead, the rotation of second elliptically polarized light is opposite with the rotation of first elliptically polarized light；Second circularly polarized light or
Second elliptically polarized light becomes the second linearly polarized light after the second phase postpones piece, second linearly polarized light from
The optical system is projected in the reflective polarizer transmission.
Optionally, the retardation axis and described the of the axis of reflection of the reflective polarizer and first phase delay piece
The angle that two phase postpones the retardation axis of piece is 45 degree.
Optionally, the first phase delay piece and second phase delay piece are quarter wave plate.
Optionally, the angle of the reflective polarizer and the display unit is 45 degree；The reflective polarizer
Center vertical line and the optical axis included angle of the microscope group are 45 degree；The display unit is mutually perpendicular to the microscope group.
Optionally, the optical system further includes third phase delay piece, and the third phase delay piece is set to described aobvious
Show between unit and first phase delay piece.
Optionally, the optical system further includes delustring element, and it is remote that the delustring element is set to the reflective polarizer
Side from the microscope group.
To achieve the above object, the application proposes a kind of virtual reality device, which is characterized in that the virtual reality device
Including the optical system as described in any of the above-described embodiment.
In the technical solution that the application proposes, the optical system along light transmission direction sequence includes display unit, anti-
Formula polarizing film and microscope group are penetrated, the microscope group includes close to the first surface of the reflective polarizer and far from the reflection
The second surface of formula polarizing film；The optical system further includes phase delay chip, and the phase delay chip includes that first phase is prolonged
Slow piece, the first phase delay piece are set to the reflective polarizer close to the side of the display unit；The display is single
The incident ray that member issues reflects after the first phase postpones piece in the reflective polarizer, again passes through institute
Become microscope group described in the first circularly polarized light and directive after stating first phase delay piece, the first surface or the second surface are set
There is optical splitter, first circularly polarized light is the second circularly polarized light, second circularly polarized light by the spectrophotometric reflection back
Rotation and first circularly polarized light rotation on the contrary, second circularly polarized light becomes by first phase delay piece
Second linearly polarized light, the polarization direction of second linearly polarized light and the direction phase of the axis of homology of the reflective polarizer
Together, therefore second linearly polarized light is penetrated from the reflective polarizer.Human eye is again introduced into so as to avoid reflection light
After form ghost, be easy to produce ghost by the light of optical system of virtual reality device in the prior art to solve,
Influence the problem of user uses virtual reality device.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the light path schematic diagram that optical system of the present invention unifies embodiment；
Fig. 2 is the light path schematic diagram of the another embodiment of optical system of the present invention；
Fig. 3 is the light path schematic diagram of the another embodiment of optical system of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 10 | Display unit | 33 | Third phase postpones piece |
| 20 | Reflective polarizer | 40 | Microscope group |
| 30 | Phase delay chip | 41 | First surface |
| 31 | First phase postpones piece | 42 | Second surface |
| 32 | Second phase postpones piece | 50 | Delustring element |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, be also possible to
Electrical connection；It can be directly connected, the connection inside two elements or two can also be can be indirectly connected through an intermediary
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
It in addition, the technical solution between each embodiment of the present invention can be combined with each other, but must be general with this field
Based on logical technical staff can be realized, it will be understood that when the combination of technical solution appearance is conflicting or cannot achieve this
The combination of technical solution is not present, also not the present invention claims protection scope within.
The present invention provides a kind of optical system and the virtual reality device with it.
Please refer to Fig. 1 to Fig. 3, the optical system along light transmission direction sequence include display unit 10, it is reflective partially
Vibration piece 20 and microscope group 40,
The center vertical line of the display unit 10 intersects with the extended line of the optical axis of the microscope group 40；
The microscope group 40 includes close to the first surface 41 of the reflective polarizer 20 and far from described reflective inclined
The second surface 42 of vibration piece 20；
The optical system further includes phase delay chip 30, and the phase delay chip 30 is set to the reflective polarizer 20
Close to the side of the display unit 10；
The first surface 41 or the second surface 42 are equipped with optical splitter；
The incident ray that the display unit 10 issues becomes the first linearly polarized light, institute after the phase delay chip 30
The polarization direction for stating the first linearly polarized light is identical as the reflection axis direction of the reflective polarizer 20, first linearly polarized light
The phase delay chip 30 is returned after the reflective polarizer 20 reflection, becomes the first circle of rotation property identical as incident ray
Microscope group 40 described in polarised light or the first elliptically polarized light, first circularly polarized light or the first elliptically polarized light directive, quilt
The optical splitter transmission and reflection, transmitted ray are transmitted to human eye after projecting the microscope group 40 from the second surface 42；Reflection
Light becomes the second circularly polarized light or the second elliptically polarized light, the rotation of second circularly polarized light and first circularly polarized light
Rotation on the contrary, the rotation of second elliptically polarized light is opposite with the rotation of first elliptically polarized light；Second circle
Polarised light or second elliptically polarized light, which again pass by, becomes the second linearly polarized light after the phase delay chip 30, and described second
Linearly polarized light projects the optical system from the reflective polarizer 20 transmission.
In the technical solution that the application proposes, the optical system along light transmission direction sequence include display unit 10,
Reflective polarizer 20 and microscope group 40, the microscope group 40 include close to the reflective polarizer 20 first surface 41 and
Second surface 42 far from the reflective polarizer 20；The optical system further includes phase delay chip 30, and the phase is prolonged
Slow piece 30 is set to the reflective polarizer 20 close to the side of the display unit 10；The incidence that the display unit 10 issues
Light reflects after the phase delay chip 30 in the reflective polarizer 20, again passes through the phase delay chip
Become microscope group 40 described in the first circularly polarized light and directive after 30, the first surface 41 or the second surface 42 are equipped with light splitting
Device, first circularly polarized light are the second circularly polarized light, the rotation of second circularly polarized light by the spectrophotometric reflection back
Rotation with first circularly polarized light is on the contrary, second circularly polarized light becomes described second by the phase delay chip 30
Linearly polarized light, the polarization direction of second linearly polarized light is identical as the direction of the axis of homology of the reflective polarizer 20, because
This described second linearly polarized light is penetrated from the reflective polarizer 20.Shape after human eye is again introduced into so as to avoid reflection light
At ghost, so that the light solved in the prior art by the optical system of virtual reality device is easy to produce ghost, influence
The problem of user uses virtual reality device.
In preferred embodiment, the optical splitter is spectro-film, specifically, the spectro-film is part reflective semitransparent film, it is described
The transmissivity of part reflective semitransparent film and the ratio of reflectivity are 1:1, it is to be understood that the optical splitter light splitting ratio is not limited to
This, in other embodiments, the transmissivity of the optical splitter and the ratio of reflectivity can also be 4:6 or 3:7.It is understood that
, the optical splitter can also be beam splitter, the beam splitter can for light splitting piece or other light can be carried out
The optical element of light splitting.
Fig. 1 is please referred to, in some alternative embodiments, the phase delay chip 30 includes that first phase postpones piece
31, specifically, first phase delay piece 31 covers the reflective polarizer 20 close to the side of the display unit 10
Surface setting, the first surface 41 are equipped with optical splitter.The incident ray that the display unit 10 issues passes through first phase
Become the first linearly polarized light, the polarization direction of first linearly polarized light and the reflective polarizer 20 after position delay piece 31
It is identical to reflect axis direction, first linearly polarized light returns to the first phase after being reflected by the reflective polarizer 20 postpones
Piece 31, become it is identical as incident ray rotation property the first circularly polarized light or the first elliptically polarized light, first circularly polarized light or
Microscope group 40 described in the first elliptically polarized light directive is transmitted and is reflected by the optical splitter, and transmitted ray is from second table
Face 42 is transmitted to human eye after projecting the microscope group 40；Reflection light becomes the second circularly polarized light or the second elliptically polarized light, described
The rotation of the rotation of second circularly polarized light and first circularly polarized light on the contrary, the rotation of second elliptically polarized light with it is described
The rotation of first elliptically polarized light is opposite；Second circularly polarized light or second elliptically polarized light again pass by described first
Become the second linearly polarized light after phase delay chip 31, polarization direction and the reflection type polarization due to second linearly polarized light
The transmission axis direction of piece 20 is identical, therefore second linearly polarized light projects the optics from the reflective polarizer 20 transmission
System.
In preferred embodiment, the angle of the axis of reflection of the reflective polarizer 20 and first phase delay piece 31
It is 45 degree.Specifically, when the angle of the axis of reflection of the reflective polarizer 20 and first phase delay piece 31 is 45 degree
When, first linearly polarized light by the reflection of the reflective polarizer 20 is postponing piece 31 by the first phase
Afterwards, the polarization state of first linearly polarized light is changed into circularly polarized light from linearly polarized light, anti-when the reflective polarizer 20
The retardation axis of axis and first phase delay piece 31 is penetrated when not being 45 degree, the polarization state of first linearly polarized light is from linear polarization
Light is changed into elliptically polarized light, and elliptically polarized light is when returning to the reflective polarizer 20 after the reflection of the optical splitter
Again become linearly polarized light, due to the retardation axis of the axis of reflection of the reflective polarizer 20 and first phase delay piece 31
It is not 45 degree, the linearly polarized light that elliptically polarized light is transformed into can not be all through the reflective polarizer 20, therefore there are portions
Divide the light reflected by the reflective polarizer 20, is finally easy to return to the microscope group 40, and form ghost, influences user's
Perception.
Preferably, first phase delay piece 31 is the first quarter wave plate, in specific embodiment, the one 1/4 wave
The central wavelength of piece is equal with the wavelength of the incident ray, the fast axle or slow axis of first quarter wave plate and the incident light
The angle of the polarization direction of line is 45 degree, specifically, the incident ray is right-circularly polarized light, the incident ray passes through institute
Stating becomes first linearly polarized light after the first quarter wave plate, the polarization direction of first linearly polarized light and it is described it is reflective partially
The reflection axis direction of vibration piece 20 is identical, therefore first linearly polarized light is reflected by the reflective polarizer 20, and described first
Linearly polarized light becomes the first circularly polarized light after again passing by first quarter wave plate, and first circularly polarized light is that dextrorotation circle is inclined
Shake light, and first circularly polarized light is become second circularly polarized light, second circularly polarized light after the spectrophotometric reflection
For left circularly polarized light, second circularly polarized light becomes second linearly polarized light after again passing by first quarter wave plate,
The polarization direction of second linearly polarized light and the polarization direction of first linearly polarized light are mutually perpendicular to, and with the reflection
The transmission axis direction of formula polarizing film 20 is identical, therefore second linearly polarized light penetrates the reflective polarizer 20, not along original
The problem of optical path is transmitted, and leads to ghost so as to avoid the reflection light in the optical system.
Referring to figure 2., in some alternative embodiments, the phase delay chip 30 includes that first phase postpones piece 31
Postpone piece 32 with second phase.Specifically, the first phase delay piece 31 is set to the reflective polarizer 20 close to described
One side surface of display unit 10, and be arranged close to one end of the display unit 10, the second phase delay piece 32 is set to
The reflective polarizer 20 is arranged close to a side surface of the display unit 10, and close to one end of the microscope group 40, institute
Second surface 42 is stated equipped with optical splitter.
The incident ray that the display unit 10 issues is after the first phase postpones piece 31 by described reflective inclined
The piece 20 that shakes reflects, and microscope group 40 described in directive after first phase delay piece 31 is again passed by, described in the microscope group 40
After spectrophotometric reflection, postpones piece 32 by the second phase, project the optical system from the reflective polarizer 20.
In preferred embodiment, the axis of reflection of the reflective polarizer 20 and the first phase postpone piece 31 and institute
The angle for stating second phase delay piece 32 is 45 degree.Specifically, the first phase delay piece 31 prolongs with the second phase
Slow piece 32 is each parallel to the reflective polarizer 20, when axis of reflection and the first phase of the reflective polarizer 20 are prolonged
When the angle of slow piece 31 and second phase delay piece 32 is 45 degree, by the institute of the reflection of the reflective polarizer 20
The first linearly polarized light is stated after the first phase postpones piece 31, the polarization state of first linearly polarized light is from linearly polarized light
It is changed into circularly polarized light, when the retardation axis of the axis of reflection and first phase delay piece 31 of the reflective polarizer 20 is not
At 45 degree, the polarization state of first linearly polarized light is changed into elliptically polarized light from linearly polarized light, and elliptically polarized light is passing through institute
State that become line again when returning to the reflective polarizer 20 by second phase delay piece 32 after the reflection of optical splitter inclined
Shake light, ellipse since the retardation axis of the axis of reflection of the reflective polarizer 20 and first phase delay piece 31 is not 45 degree
The linearly polarized light that circularly polarized light is transformed into can not be all through the reflective polarizer 20, therefore there is part by the reflection
The light that formula polarizing film 20 reflects, is finally easy to return to the microscope group 40, and form ghost, influences the perception of user.
In preferred embodiment, the first phase delay piece 31 and second phase delay piece 32 are quarter wave plate.
Specifically, the central wavelength of first quarter wave plate is equal with the wavelength of the incident ray, in second quarter wave plate
Cardiac wave length is equal with the wavelength of the incident ray, and the fast axle of first quarter wave plate or slow axis are inclined with the incident ray
The angle in vibration direction is 45 degree, the angle of the polarization direction of the fast axle or slow axis and the incident ray of second quarter wave plate
It is 45 degree, first quarter wave plate and second quarter wave plate are used to linearly polarized light being changed into circularly polarized light.
In some alternative embodiments, the angle of the reflective polarizer 20 and the display unit 10 is 45
Degree；The center vertical line of the reflective polarizer 20 and the optical axis included angle of the microscope group 40 are 45 degree；The display unit 10 with
The microscope group 40 is mutually perpendicular to.In specific embodiment, the incident ray that the display unit 10 issues is in the reflection
The incidence angle and angle of reflection of formula polarizing film 20 are 45 degree, the light transmission direction of first circularly polarized light and the microscope group 40
Optical axis direction it is identical, therefore guarantee that first circularly polarized light, can be by the optical splitter when being transmitted to the microscope group 40
The reflective polarizer 20 is returned to along former opposite direction afterwards.When the folder of the reflective polarizer 20 and the display unit 10
When angle is not 45, need through the accurate adjustment display unit 10, the reflective polarizer 20 and the microscope group 40
Relative position, so that the incident ray for guaranteeing that the display unit 10 issues is reflected by the reflective polarizer 20
Afterwards, it can be transmitted to the microscope group 40, increase the assembling difficulty of the optical system.
Fig. 1 to Fig. 3 is please referred to, in some alternative embodiments, the optical system further includes delustring element 50, institute
Delustring element 50 is stated set on side of the reflective polarizer 20 far from the microscope group 40, specifically, in order to avoid described the
Two linearly polarized lights are reflected penetrated from the reflective polarizer 20 again, in institute after through the reflective polarizer 20
It states reflective polarizer 20 and the delustring element 50 is set far from the side of the microscope group 40, the delustring element 50 is for absorbing
Or second linearly polarized light for penetrating the reflective polarizer 20 is scattered, and in preferred embodiment, the delustring element 50
For black curtain.It is understood that the delustring element 50 is without being limited thereto, and in other embodiments, the delustring element 50
It can be for Absorbing film or anti-dazzle glas or by black coating.
Referring to figure 3., in some alternative embodiments, the phase delay chip 30 further includes third phase delay piece
33, the third phase delay piece 33 is set between the display unit 10 and first phase delay piece 31.Specifically, working as
When the incident ray that the display unit 10 issues is linearly polarized light, in order to guarantee that the incident ray is passing through the light
The influence that ghost can be eliminated or reduced after system is set between the display unit 10 and first phase delay piece 31
Set the third phase delay piece 33, the incidence that the third phase delay piece 33 is used to issue the display unit 10
Light is changed into circularly polarized light or elliptically polarized light from linearly polarized light, to guarantee the ghost effect that disappears of the optical system.It is excellent
It selecting in embodiment, the retardation axis of the third phase delay piece 33 and the polarization direction angle of the incident ray are 45 degree,
To make the incident ray be changed into circularly polarized light.
In some alternative embodiments, the third phase delayer is third quarter wave plate, specific embodiment
In, the central wavelength of the third quarter wave plate is equal with the wavelength of the incident ray, the fast axle of the third quarter wave plate or
The angle of the polarization direction of slow axis and the incident ray is 45 degree, when the incident ray is linearly polarized light, the incidence
For light after the third quarter wave plate, the incident ray becomes circularly polarized light from linearly polarized light.
In some alternative embodiments, the optical system further includes spectroscope (not shown), and the spectroscope is flat
Row is arranged in the reflective polarizer 20, specifically, the spectroscope is connect with the reflective polarizer 20, the light splitting
Mirror positions the reflective polarizer 20 for reflective polarizer 20 described in support.
The present invention also proposes that a kind of virtual reality device, the virtual reality device include such as above-mentioned any embodiment institute
The optical system stated, the specific structure of the optical system is referring to above-described embodiment, since the optical system is using above-mentioned all
Whole technical solutions of embodiment, therefore at least all beneficial effects brought by the technical solution with above-described embodiment,
This is no longer repeated one by one.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of optical system, which is characterized in that the optical system includes display unit, reflection along light transmission direction sequence
Formula polarizing film and microscope group,
The center vertical line of the display unit intersects with the extended line of the optical axis of the microscope group；
The microscope group includes the first surface close to the reflective polarizer and second far from the reflective polarizer
Surface；
The optical system further includes phase delay chip, and the phase delay chip includes first phase delay piece, first phase
Position delay piece is set to the reflective polarizer close to the side of the display unit；
The first surface or second surface are equipped with optical splitter；
The incident ray that the display unit issues becomes the first linearly polarized light after the first phase postpones piece, and described the
The polarization direction of one linearly polarized light is identical as the reflection axis direction of the reflective polarizer, and first linearly polarized light is described
The first phase delay piece is returned after reflective polarizer reflection, becomes the first circularly polarized light of rotation property identical as incident ray
Or first elliptically polarized light, microscope group described in first circularly polarized light or the first elliptically polarized light directive, by the light splitting
Device transmission and reflection, transmitted ray are transmitted to human eye after projecting the microscope group from the second surface；Reflection light becomes second
Circularly polarized light or the second elliptically polarized light, the rotation of the rotation of second circularly polarized light and first circularly polarized light on the contrary,
The rotation of second elliptically polarized light is opposite with the rotation of first elliptically polarized light；Second circularly polarized light or described
Second elliptically polarized light, which again passes by, becomes the second linearly polarized light after first phase delay piece, second linearly polarized light from
The optical system is projected in the reflective polarizer transmission.
2. optical system as described in claim 1, which is characterized in that the axis of reflection of the reflective polarizer and described first
The angle of the retardation axis of phase delay chip is 45 degree.
3. optical system as described in claim 1, which is characterized in that the first phase delay piece is quarter wave plate.
4. optical system as described in claim 1, which is characterized in that the phase delay chip include first phase delay piece with
Second phase postpones piece；The first phase delay piece is set to the reflective polarizer close to the side table of the display unit
Face, and be arranged close to one end of the display unit, the second phase delay piece is set to the reflective polarizer close to institute
A side surface of display unit is stated, and is arranged close to one end of the microscope group；
The incident ray that the display unit issues becomes the first linearly polarized light after the first phase postpones piece, and described the
The polarization direction of one linearly polarized light is identical as the reflection axis direction of the reflective polarizer, and first linearly polarized light is described
The first phase delay piece is returned after reflective polarizer reflection, becomes the first circularly polarized light of rotation property identical as incident ray
Or first elliptically polarized light, microscope group described in first circularly polarized light or the first elliptically polarized light directive, by the light splitting
Device transmission and reflection, transmitted ray are transmitted to human eye after projecting the microscope group from the second surface；Reflection light becomes second
Circularly polarized light or the second elliptically polarized light, the rotation of the rotation of second circularly polarized light and first circularly polarized light on the contrary,
The rotation of second elliptically polarized light is opposite with the rotation of first elliptically polarized light；Second circularly polarized light or described
Second elliptically polarized light becomes the second linearly polarized light after the second phase postpones piece, and second linearly polarized light is from described
The optical system is projected in reflective polarizer transmission.
5. optical system as claimed in claim 4, which is characterized in that the axis of reflection of the reflective polarizer and described first
The angle of the retardation axis of the retardation axis of phase delay chip and second phase delay piece is 45 degree.
6. optical system as claimed in claim 4, which is characterized in that the first phase delay piece prolongs with the second phase
Slow piece is quarter wave plate.
7. optical system as described in claim 1, which is characterized in that the folder of the reflective polarizer and the display unit
Angle is 45 degree；The center vertical line of the reflective polarizer and the optical axis included angle of the microscope group are 45 degree；The display unit with
The microscope group is mutually perpendicular to.
8. optical system as described in claim 1, which is characterized in that the optical system further includes third phase delay piece,
The third phase delay piece is set between the display unit and first phase delay piece.
9. such as the described in any item optical systems of claim 1-8, which is characterized in that the optical system further includes delustring member
Part, the delustring element are set to side of the reflective polarizer far from the microscope group.
10. a kind of virtual reality device, which is characterized in that the virtual reality device includes such as any one of claim 1-9 institute
The optical system stated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479425.8A CN110208948B (en) | 2019-06-03 | 2019-06-03 | Optical system and virtual reality equipment with same |
| PCT/CN2019/128797 WO2020244210A1 (en) | 2019-06-03 | 2019-12-26 | Optical system and virtual reality device having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479425.8A CN110208948B (en) | 2019-06-03 | 2019-06-03 | Optical system and virtual reality equipment with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110208948A true CN110208948A (en) | 2019-09-06 |
| CN110208948B CN110208948B (en) | 2020-11-24 |
Family
ID=67790589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910479425.8A Active CN110208948B (en) | 2019-06-03 | 2019-06-03 | Optical system and virtual reality equipment with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110208948B (en) |
| WO (1) | WO2020244210A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111221130A (en) * | 2020-03-20 | 2020-06-02 | 维沃移动通信有限公司 | Optical system and near-eye display apparatus |
| CN111474715A (en) * | 2020-04-23 | 2020-07-31 | 歌尔股份有限公司 | Optical system and augmented reality device |
| CN111638602A (en) * | 2020-07-03 | 2020-09-08 | 维沃移动通信有限公司 | Optical device and near-to-eye display apparatus |
| WO2020244210A1 (en) * | 2019-06-03 | 2020-12-10 | 歌尔股份有限公司 | Optical system and virtual reality device having same |
| CN113485012A (en) * | 2021-06-29 | 2021-10-08 | 京东方科技集团股份有限公司 | Folding light path structure, optical imaging system and virtual reality equipment |
| CN114077051A (en) * | 2020-08-13 | 2022-02-22 | 京东方科技集团股份有限公司 | Near-to-eye display device |
| WO2023134506A1 (en) * | 2022-01-17 | 2023-07-20 | 惠州Tcl移动通信有限公司 | Vr optical system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1485648A (en) * | 2002-09-27 | 2004-03-31 | 株式会社尼康 | Image printing system using cellular phone with camera |
| EP1610567A1 (en) * | 2004-06-24 | 2005-12-28 | Lg Electronics Inc. | Illumination system for a single panel projection display apparatus. |
| CN108828774A (en) * | 2018-07-02 | 2018-11-16 | 京东方科技集团股份有限公司 | Virtual reality shows equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000330196A (en) * | 1999-05-18 | 2000-11-30 | Nikon Corp | Color synthesizing optical system and projection type display device equipped with the system |
| CN102688016B (en) * | 2012-03-07 | 2015-12-02 | 北京理工大学 | A kind of fundus camera |
| CN208818938U (en) * | 2018-09-10 | 2019-05-03 | 太若科技(北京)有限公司 | AR Optical devices and wearable AR equipment |
| CN110208948B (en) * | 2019-06-03 | 2020-11-24 | 歌尔光学科技有限公司 | Optical system and virtual reality equipment with same |
-
2019
- 2019-06-03 CN CN201910479425.8A patent/CN110208948B/en active Active
- 2019-12-26 WO PCT/CN2019/128797 patent/WO2020244210A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1485648A (en) * | 2002-09-27 | 2004-03-31 | 株式会社尼康 | Image printing system using cellular phone with camera |
| EP1610567A1 (en) * | 2004-06-24 | 2005-12-28 | Lg Electronics Inc. | Illumination system for a single panel projection display apparatus. |
| CN108828774A (en) * | 2018-07-02 | 2018-11-16 | 京东方科技集团股份有限公司 | Virtual reality shows equipment |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020244210A1 (en) * | 2019-06-03 | 2020-12-10 | 歌尔股份有限公司 | Optical system and virtual reality device having same |
| CN111221130A (en) * | 2020-03-20 | 2020-06-02 | 维沃移动通信有限公司 | Optical system and near-eye display apparatus |
| CN111474715A (en) * | 2020-04-23 | 2020-07-31 | 歌尔股份有限公司 | Optical system and augmented reality device |
| CN111638602A (en) * | 2020-07-03 | 2020-09-08 | 维沃移动通信有限公司 | Optical device and near-to-eye display apparatus |
| CN114077051A (en) * | 2020-08-13 | 2022-02-22 | 京东方科技集团股份有限公司 | Near-to-eye display device |
| CN113485012A (en) * | 2021-06-29 | 2021-10-08 | 京东方科技集团股份有限公司 | Folding light path structure, optical imaging system and virtual reality equipment |
| WO2023134506A1 (en) * | 2022-01-17 | 2023-07-20 | 惠州Tcl移动通信有限公司 | Vr optical system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110208948B (en) | 2020-11-24 |
| WO2020244210A1 (en) | 2020-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110208948A (en) | Optical system and virtual reality device with it | |
| CN209728302U (en) | Lens assembly and optical system and helmet with it | |
| CN109613705B (en) | Near-eye display device and near-eye display method | |
| CN209496201U (en) | VR optical system and VR show equipment | |
| CN109313340A (en) | Embedded reflection eyepiece | |
| WO2021185033A1 (en) | Optical system and near-eye display device | |
| CN110146978A (en) | AR display device and wearable AR equipment | |
| CN110320668A (en) | Optical system and virtual reality device with it | |
| JP2019506636A5 (en) | ||
| CN107065181A (en) | The optical system of virtual reality device | |
| JP2012048002A (en) | Imaging device | |
| US20230145899A1 (en) | Optical apparatus and near-eye display device | |
| WO2015081806A1 (en) | Wavelength-independent and temperature-independent faraday rotating mirror | |
| JP2012118193A (en) | Imaging device | |
| US11415794B2 (en) | Low-obliquity pupil relay for near-eye display | |
| CN111474715A (en) | Optical system and augmented reality device | |
| CN209656995U (en) | Lens module and optical system and virtual reality device with it | |
| CN107589622B (en) | Zero-order diffraction adjustable laser projection device | |
| JPH04116521A (en) | Prism optical element and polarizing optical element | |
| CN216248599U (en) | Augmented reality display system and AR glasses | |
| CN113721415B (en) | Projection light machine | |
| CN215494380U (en) | Faraday rotation mirror | |
| CN211528822U (en) | Optical system and augmented reality device | |
| CN209946576U (en) | Optical circulator | |
| CN116243483A (en) | Augmented reality display system and AR glasses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201015 Address after: 261031, north of Jade East Street, Dongming Road, Weifang hi tech Zone, Shandong province (GoerTek electronic office building, Room 502) Applicant after: GoerTek Optical Technology Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant before: GOERTEK Inc. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |