CN105629494B - A kind of short distance optical amplifier module, glasses, the helmet and VR systems - Google Patents
A kind of short distance optical amplifier module, glasses, the helmet and VR systems Download PDFInfo
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- CN105629494B CN105629494B CN201610161947.XA CN201610161947A CN105629494B CN 105629494 B CN105629494 B CN 105629494B CN 201610161947 A CN201610161947 A CN 201610161947A CN 105629494 B CN105629494 B CN 105629494B
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Abstract
A kind of short distance optical amplifier module disclosed by the invention, including it is arranged in order first phase delay piece, half-transmitting and half-reflecting mirror, second phase delay piece and the reflection type polarizer of arrangement, half-transmitting and half-reflecting mirror includes the first optical surface and the second optical surface；First optical surface postpones piece close to second phase；Second optical surface is half-transmitting and half-reflecting optical surface, and the second optical surface postpones piece close to first phase；The reflecting surface focal length fs2 of second optical surface meets the following conditions, and F≤fs2≤5F, F are the system focal length of short distance optical amplifier module, and F meets the following conditions：10mm≤F≤35mm.By carrying out parameter refinement to the fs2 for influencing optical amplifier effect, so that the module can also keep integral thickness smaller while obtaining larger optical amplifier effect, it can apply in small size VR equipment, enable the VR equipment to realize preferable field angle, larger eye movement range, high quality imaging effect, better experience sense is brought to user.
Description
Technical field
The present invention relates to technical field of optical instrument, more specifically, are related to a kind of short distance optical amplifier module, eye
Mirror, the helmet and VR systems.
Background technology
Intelligent VR (Virtual Reality, virtual reality) wearable device includes mainly at present VR glasses and the VR helmets, is
The good user experience of offer, needs it to realize preferable field angle, eye movement range, the imaging effect of high quality and small ruler
Very little superthin structure etc..There is optical amplifier modular structure in intelligent VR wearable devices, be the core component for realizing image conversion,
Determine intelligence VR wearable device picture texture and the planform of intelligence VR wearable devices.
Include first phase delay piece, lens unit successively from the object side to image side in existing optical amplifier modular structure
(group), second phase postpone piece and reflection type polarizer, postpone piece in the lens unit (group), close to the first phase
Optical surface be semi-transflective reflective face.In numerous researchs, optical imagery is carried out transmission amplification by lens unit (group), is optics
Amplify the core component of modular structure.In order to realize the preferable field angles of intelligent VR wearable devices, eye movement range, high quality
Imaging effect and small size superthin structure etc. need to optimize lens unit (group).Lens unit (group) is by 1
What a or multiple lens arranged in a certain order, if you need to be optimized to lens unit (group), lens need to be optimized.
Invention content
In order to solve the above technical problem, the present invention provides following technical solutions：
A kind of short distance optical amplifier module provided by the invention, including be arranged in order arrangement first phase delay piece,
Half-transmitting and half-reflecting mirror, second phase delay piece and reflection type polarizer, wherein：
The half-transmitting and half-reflecting mirror includes the first optical surface and the second optical surface；
First optical surface postpones piece close to second phase；
Second optical surface is half-transmitting and half-reflecting optical surface, and second optical surface postpones close to first phase
Piece；
The reflecting surface focal length fs2 of second optical surface meets the following conditions, F≤fs2≤5F, wherein F is the short distance
System focal length from optical amplifier module, and the F meets the following conditions：10mm≤F≤35mm.
Preferably, in above-mentioned short distance optical amplifier module, the focal length fs1 of first optical surface meets the following conditions：|
Fs1 | ＞ 2F.
Preferably, in above-mentioned short distance optical amplifier module, the thickness of the short distance optical amplifier module is H, 8mm≤
H≤30mm。
Preferably, in above-mentioned short distance optical amplifier module, the reflecting surface focal length fs2 of the second optical surface meets following item
Part, 1.5F≤fs2≤3F.
Preferably, in above-mentioned short distance optical amplifier module, the short distance optical amplifier module participates in the light beam of imaging
By bore D meet the following conditions：0.3F ＜ D ＜ 0.6F.
Preferably, in above-mentioned short distance optical amplifier module, the eye-distance that connects of the short distance optical amplifier module is 5-
15mm。
Short distance optical amplifier module provided by the invention is thin by carrying out parameter to the fs2 for influencing optical amplifier effect
Change so that the module can also keep integral thickness smaller while obtaining larger optical amplifier effect, can apply in small size
In VR equipment so that the VR equipment can realize preferable field angle, larger eye movement range, high quality imaging effect, be brought to user
Better experience sense.
Based on short distance optical amplifier module provided by the invention, the present invention also provides a kind of glasses, including it is above-mentioned
Short distance optical amplifier module, further includes screen, and the screen and the short distance optical amplifier module are coaxial or non-coaxial set
It sets.
Based on short distance optical amplifier module provided by the invention, the present invention also provides a kind of helmets, including right to want
Above-mentioned short distance optical amplifier module is sought, the helmet further includes screen, the screen and the short distance optical amplifier mould
Organize coaxial or non-coaxial setting.
The present invention also provides a kind of VR systems, including above-mentioned glasses or the above-mentioned helmet.Using short in above-mentioned VR systems
The glasses or the helmet constituted apart from optical amplifier module make it have the imaging effect of preferable field angle, eye movement range, high quality
Fruit and small size superthin structure etc. will bring good experience to user, specifically please refer to short distance optical amplifier mould
The embodiment of group, details are not described herein.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, for those of ordinary skills, do not making the creative labor
Under the premise of property, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram for short distance optical amplifier module that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of short distance optical amplifier module provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of structural schematic diagram for short distance optical amplifier module that the embodiment of the present invention three provides；
Fig. 4 is a kind of structural schematic diagram for short distance optical amplifier module that the embodiment of the present invention four provides；
Fig. 5 is a kind of structural schematic diagram for short distance optical amplifier module that the embodiment of the present invention five provides；
Fig. 6 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention one provides；
Fig. 7 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention one provides；
Fig. 8 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention one provides；
Fig. 9 is a kind of MTF figures of short distance optical amplifier module provided by Embodiment 2 of the present invention；
Figure 10 is a kind of curvature of field figure of short distance optical amplifier module provided by Embodiment 2 of the present invention；
Figure 11 is a kind of distortion figure of short distance optical amplifier module provided by Embodiment 2 of the present invention；
Figure 12 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention three provides；
Figure 13 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention three provides；
Figure 14 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention three provides；
Figure 15 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention four provides；
Figure 16 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention four provides；
Figure 17 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention four provides；
Figure 18 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention five provides；
Figure 19 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention five provides；
Figure 20 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention five provides.
Wherein：
1- reflection type polarizers, 2- half-transmitting and half-reflecting mirrors, 3- screens.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work, should all belong to protection of the present invention
Range.
Short distance optical amplifier module provided in an embodiment of the present invention includes that first phase postpones successively from the object side to image side
Piece, half-transmitting and half-reflecting mirror 2, second phase delay piece and reflection type polarizer 1, wherein：The half-transmitting and half-reflecting mirror includes
First optical surface and the second optical surface；First optical surface is close to image side；Second optical surface is half-transmitting and half-reflecting light
Face, and second optical surface is close to object side；The reflecting surface focal length fs2 of second optical surface meets the following conditions, and F≤
Fs2≤5F, F are the system focal length of the short distance optical amplifier module, 10mm≤F≤35mm.Wherein：Object side is screen side,
Image side is that the short distance optical amplifier mould forms image side.
With reference to figure 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 show provided in an embodiment of the present invention
The emission side in screen 3 is arranged in the specific example of short distance optical amplifier module, first phase delay piece, and second phase postpones piece
It is arranged in reflection type polarizer 1 far from image side, for ease of the expression of image, first phase is prolonged in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5
Slow piece and second phase delay piece do not provide.It is 45 degree of phase delay chips that first phase, which postpones piece and second phase delay piece,
45 degree of phase delays are carried out to light.
Reflective polarizer can realize the total reflection to orthogonal polarised light, and it is consistent with direction of polarized light when realize
Perspective.First optical surface of half-transmitting and half-reflecting mirror 2 is plane or curved surface, can be spherical surface or aspherical when if curved surface,
Second optical surface of half-transmitting and half-reflecting mirror 2 is half-transmitting and half-reflecting optical surface.Half-transmitting and half-reflecting optical surface is short distance light
The main source for learning the system focal power of amplification module, if its focal power is excessive, such as close to the total focal power of system (fs2 ＜ F),
Then aberration is difficult to correct；Also result in simultaneously minute surface be excessively bent, lens thickness it is larger, and then system thickness can be caused to increase
Add, is unfavorable for meeting the lightening requirement of VR wearable devices.On the contrary, if its focal power is too small (fs2 ＞ 5F), other lenses
The focal power undertaken is excessive, needs to increase lens and corrects aberration, is so just unfavorable for meeting system compact and light-weighted
It is required that.
For the good experience of VR wearable devices and light, the system focal length F of short distance optical amplifier module of structure
It is set as 10mm≤F≤35mm, the system focal length F of short distance optical amplifier module is including half-transmitting and half-reflecting mirror 2
The effective focal length of the combination of all lens.As 10mm≤F≤35mm, VR wearable device global shapes are more conform with demand.It is semi-transparent
The optical amplifier core component that half-reflecting mirror 2 is short distance optical amplifier module is penetrated, shape and parameter directly affect short distance
Shape from optical amplifier module and performance.The size of screen 3 may be implemented in the short distance optical amplifier module use of time
0.9-2.5 inches, be the lightening support for providing bigger of VR wearable devices.
The optical principle of short distance optical amplifier module：The light beam of the screen picture of object side postpones piece by first phase,
Then the second reflecting surface for transmiting the half-transmitting and half-reflecting mirror 2 transmits the first reflecting surface of the half-transmitting and half-reflecting mirror 2,
Postpone piece by second phase, reaches reflective polarizer, light beam is emitted by reflective polarizer, again passes by second phase
Postpone piece, the first reflecting surface for transmiting the half-transmitting and half-reflecting mirror 2 again reaches the second reflection of half-transmitting and half-reflecting mirror 2
Face transmits again the first reflection of the half-transmitting and half-reflecting mirror 2 by the second reflective surface of half-transmitting and half-reflecting mirror 2
Then face passes through second phase and postpones piece, eventually passes through reflective polarizer and reach image side, be imaged, reach optical amplifier
The requirement of multiple.Attached drawing 1 is specifically referred to, light principle is identical as Fig. 1 in Fig. 2-5.
It is raising image quality in the application of short distance optical amplifier module, generally requires the cooperation of other lenses, into
Attachment lens is arranged in the balance that row focal length is shared and differed.As shown in attached drawing 2, attached drawing 3, attached drawing 4 and attached drawing 5, but do not limit to
Shown in attached drawing 2, attached drawing 3, attached drawing 4 and attached drawing 5.
When the short distance optical amplifier module being applied to intelligence VR wearable devices in order to realize, it can realize preferably
The requirement of field angle, eye movement range, the imaging effect of high quality and small size superthin structure, the half-transmitting and half-reflecting mirror
First focal length f of focal length containing reflecting surface, i.e. semi-permeable and semi-reflecting mirror meets the following conditions：
F≤f≤2F (1)
Wherein, incident light is defined through first optical surface, by focal length measured after second optical surface reflection
For the f of focal length containing reflecting surface of half-transmitting and half-reflecting mirror.The f of focal length containing reflecting surface of half-transmitting and half-reflecting mirror 2 is that short distance optics is put
If the main source focal power containing reflecting surface of big module focal power is excessive, such as close to the total focal power of system (f ＜ F), then aberration
It is difficult to correct；If focal power containing reflecting surface is too small (f ＞ 2F), the focal power that other lenses are undertaken is excessive, needs to increase
Lens correct aberration, are unfavorable for system compact and lightweight.Such range of f can make short distance optical amplifier mould
Group is with larger field angle and allows big screen resolution, 80 degree of field angle V ＞, and may be allowed screen resolution is 800*
800~4000*4000 is more conducive to the use of short distance optical amplifier module.
The focal length fs1 of first optical surface meets the following conditions：
| fs1 | ＞ 2F (2)
If fs1 is too small, 2 face type of the half-transmitting and half-reflecting mirror can be caused excessively to be bent, be unfavorable for aberration correction, and
Excessively face type curved lens thickness is larger, and optical system thickness can be caused to increase, be unfavorable for the lightening requirement of VR wearable devices.
The thickness of the short distance optical amplifier module is that H meets the following conditions：8mm≤H≤30mm, in order to reach VR
The thickness of the requirement of wearable device small size, superthin structure, the short distance optical amplifier module is short distance optical amplifier mould
Along the distance of the maximum distance (maximum distance is in the present embodiment) of optical axis direction between group both sides) it is 8-30mm.So may be used
Eye-distance 5-15mm is met to realize, is more conducive to the requirement for realizing VR wearable devices small size, superthin structure, while conveniently making again
With, it is described connect eye-distance be observer can be clearly apparent entire visual field picture when eyeball and eyepiece (in the present invention eyepiece be near
The distance between the optical surface of person of modern times's eye).
Advanced optimizing technical solution, the reflecting surface focal length fs2 of the second optical surface meets the following conditions, 1.5F≤fs2≤
3F。
In order to obtain big eye movement range while preferable image quality, the adjustable extent of the aperture of object side can be obtained again
Be designed as 1.7F-4F, i.e., participated in by the short distance optical amplifier module light beam of imaging by meet the following conditions：
0.3F ＜ D ＜ 0.6F, corresponding eye movement range 5-10mm.The position of bore D is attached drawing 2, attached referring to attached drawing 1
The position of Fig. 3, attached drawing 4 and attached drawing 5 are identical as attached drawing 1, and details are not described herein.
With lower part combination subordinate list to the present embodiment provides short distance optical amplifier modules to be described further.
In each example, in the specific design parameter table of half-transmitting and half-reflecting mirror 2, OBJ is indicated in optical system
Object, IMA indicate that the picture in optical system, STO indicate that the diaphragm in optical system, i indicate the sequence of optical surface from an object side
(i0)+1, this table moves towards arrangement eyeglass by light is practical, and in the present system, light is walked from left to right, encounters material
(Glass) it is classified as MIRROR to reflect to walk toward opposite direction, it is reversed again to be reflected into second MIRROR, restores from left to right
It walks, is finally reached image planes.
Embodiment one
As shown in Figure 1, in the short distance optical amplifier module, the second optical surface of the half-transmitting and half-reflecting mirror 2
Focal length is 1F, and the design of half-transmitting and half-reflecting mirror 2 is referring to table one：
Table one：
In above-mentioned table, the first row OBJ represents the relevant design parameter of object plane；Second row represents short distance optical amplifier module
In diaphragm, the aperture of institute's diaphragm is 7mm；The third line represents reflection type polarizer and second phase delay piece in optics module
The type of the diaphragm of formation, the diaphragm is STANDARD index planes, material PMMA, diameter 24.685mm, asphericity coefficient
It is 0；Fourth line and fifth line respectively represent the first optical surface and the corresponding data of the second optical surface of attachment lens, attachment lens
Material be H-ZF52A, in the present embodiment, first optical surface be Infinity planes, the song of second optical surface
Rate radius is 888mm；6th row and the 7th row respectively represent the first optical surface and the second optical surface pair of half-transmitting and half-reflecting mirror 2
The data answered, the material of half-transmitting and half-reflecting mirror 2 are H-QK1, and the radius of curvature of first optical surface is -55mm, described the
The radius of curvature of two optical surfaces is -56mm；8th row to the tenth five-element represents light in the diaphragm, the first lens 10 and second
The relevant parameter in reflection and transmission between lens 20.16th row represents the glass-film in 3 liquid crystal layer of screen, the glass
The thickness of film is 0.2057766mm, material BK7.17th row IMA represents the picture in optical system.
The corresponding other parameters of the short distance optical amplifier module such as table two：
| Screen size C (inch) | 2.22 |
| Field angle V (°) | 90 |
| System focal length F (mm) | 29.16 |
| It is semi-transparent partly to penetrate face reflecting surface effective focal length (fs2) | 1F |
| Eyebox eye movement range A (mm) | 7 |
| Screen resolution | 800*800 |
| Optical system thickness (mm) | 23.8 |
| Eye relif connect eye-distance (mm) | 9 |
| F# apertures | 4 |
| Optics overall diameter (mm) | 40 |
| Systematical distortion | 29.2 |
By table two as can be seen that by the relevant parameter design in table one, semi-transparent face reflecting surface effective focal length of partly penetrating is
1F, system focal length F are 29.16, and optical system thickness is 23.8, and then can obtain 90 ° of field angle, by that will be arranged in institute
State the aperture before optical amplifier module and be designed as 4, i.e., corresponding diaphragm diameter D be 7mm, can obtain accordingly 7mm compared with
Big eye movement range.
It designs that screen size is 2.22 inches, to connect eye-distance be 5mm simultaneously, in conjunction with from the MTF figures of Fig. 6, obtains each regard
Field mean ordinate (modulation transfer function) is higher than 0.18 abscissa (every millimeter of spatial frequency) value, and then obtains the short distance
The visual angle parsing power of optical amplifier module can support the resolution ratio of 800*800, the curvature of field control control in Fig. 7 (- 10mm,
10mm) in range, the aberration rate in Fig. 8 controls in the range of (- 29.2%, 0).
Embodiment two
Shown in Fig. 2, in the short distance optical amplifier module, also include on the basis of containing half-transmitting and half-reflecting mirror 2
The performance parameter of other lenses, the lens is adaptively adjusted according to 2 parameter request of half-transmitting and half-reflecting mirror, described semi-transparent
The focal length for penetrating the second optical surface of half-reflecting mirror 2 is 2F, and the design of half-transmitting and half-reflecting mirror 2 is referring to table three：
Table three：
The specific descriptions of this table can refer to the description in table one, and details are not described herein.
The refinement parameter of optical surface in the short distance optical amplifier module such as table four：
The general surface of aspherical formula is；
Wherein：R be lens on point arrive optical axis distance, c be curved surface vertex curvature, K be quadratic surface coefficient, d, e, f,
G, h, I, j are respectively 4,6,8,10,12,14,16 surface coefficients.
C=-1/55.02969, K=-28.93212, d=5.4015026*10-5, e=-1.6567046*10-7, f=
2.4870791*10-10 g=-4.6902803*10-13, h=i=j=0,
The above coefficient is substituted into the aspherical equation expression formula that x formula are exactly surface 6, other aspherical classes according to this respectively
It pushes away.
The corresponding other parameters of the short distance optical amplifier module such as table five：
| Screen size C (inch) | 1.5 |
| Field angle V (°) | 100 |
| System focal length F (mm) | 16.7 |
| It is semi-transparent partly to penetrate face reflecting surface effective focal length (fs2) | 2F |
| Eyebox eye movement range A (mm) | 7 |
| Screen resolution | 2000*2000 |
| Optical system thickness (mm) | 12.3 |
| Eye relif connect eye-distance (mm) | 8 |
| F# apertures | 2.4 |
| Optics overall diameter (mm) | 38 |
| Systematical distortion | 34.6 |
It is semi-transparent partly to penetrate that face reflecting surface effective focal length is 2F and optical system thickness is 12.3mm, Jin Erke referring to table five
To obtain 100 ° of big field angle；By the way that the aperture being arranged before the optical amplifier module is designed as 2.4, i.e., corresponding light
Late diameter D is 7mm, can obtain the big eye movement range of 7mm accordingly.
It designs that screen size is 1.5 inches, to connect eye-distance be 8mm simultaneously, in the MTF figures in conjunction with Fig. 9, show that each visual field is flat
Equal ordinate (modulation transfer function) is higher than 0.18 abscissa (every millimeter of spatial frequency) value, and then obtains the short distance optics
The visual angle parsing power of amplification module can support the resolution ratio of 2000*2000, the curvature of field control control in Figure 10 (- 0.2mm,
0.2mm) in range, the aberration rate in Figure 11 controls in the range of (- 34.6%, 0).
Embodiment three
Shown in Fig. 3, in the short distance optical amplifier module, also include on the basis of containing half-transmitting and half-reflecting mirror 2
The performance parameter of other lenses, other lenses is adaptively adjusted according to 2 parameter request of half-transmitting and half-reflecting mirror, other lenses
It mutually makes up and mutually promotes with half-transmitting and half-reflecting mirror 2, and the focal length of the second optical surface of the half-transmitting and half-reflecting mirror 2 is
5F, the design of half-transmitting and half-reflecting mirror 2 is referring to table six：
Table six：
The specific descriptions of this table can refer to the description in table one, and details are not described herein.
The corresponding other parameters of the short distance optical amplifier module such as table seven：
| Screen size C (inch) | 1.11 |
| Field angle V (°) | 100 |
| System focal length F (mm) | 12.8 |
| It is semi-transparent partly to penetrate face reflecting surface effective focal length (fs2) | 5F |
| Eyebox eye movement range A (mm) | 6 |
| Screen resolution | 800*800 |
| Optical system thickness (mm) | 27 |
| Eye relif connect eye-distance (mm) | 8 |
| F# apertures | 2.1 |
| Optics overall diameter (mm) | 29 |
| Systematical distortion | 35.6 |
By table seven as can be seen that by the relevant parameter design in table six, semi-transparent face reflecting surface effective focal length of partly penetrating is
5F and optical system thickness are 27mm, and then can obtain 100 ° of big field angle；By that will be arranged in the optical amplifier
Aperture before module is designed as 2.1, i.e., corresponding diaphragm diameter D is 6mm, can obtain the big eye movement range of 6mm accordingly.
It designs that screen size is 1.11 inches, to connect eye-distance be 8mm simultaneously, in the MTF figures in conjunction with Figure 12, obtains each visual field
Mean ordinate (modulation transfer function) is higher than 0.18 abscissa (every millimeter of spatial frequency) value, and then obtains the short distance light
The resolution ratio of 800*800 can be supported by learning the visual angle parsing power of amplification module, the curvature of field control control in Figure 13 (- 0.5mm,
0.5mm) in range, the aberration rate in Figure 14 controls in the range of (- 35.6%, 0).
Example IV
Shown in Fig. 4, in the short distance optical amplifier module, also include on the basis of containing half-transmitting and half-reflecting mirror 2
The performance parameter of other lenses, other lenses is adaptively adjusted according to 2 parameter request of half-transmitting and half-reflecting mirror, other lenses
It mutually makes up and mutually promotes with half-transmitting and half-reflecting mirror 2, and the focal length of the second optical surface of the half-transmitting and half-reflecting mirror 2 is
1.5F, the design of half-transmitting and half-reflecting mirror 2 is referring to table eight：
Table eight：
The specific descriptions of this table can refer to the description in table one, and details are not described herein.
The refinement parameter of optical surface in the short distance optical amplifier module such as table nine：
The explanation of design parameter about upper table, reference table four.
The corresponding other parameters of the short distance optical amplifier module such as table ten：
| Screen size C (inch) | 2.1 |
| Field angle V (°) | 100 |
| System focal length F (mm) | 23 |
| It is semi-transparent partly to penetrate face reflecting surface effective focal length (fs2) | 1.5F |
| Eyebox eye movement range A (mm) | 7 |
| Screen resolution | 1000*1000 |
| Optical system thickness (mm) | 16.2 |
| Eye relif connect eye-distance (mm) | 9 |
| F# apertures | 3.3 |
| Optics overall diameter (mm) | 44 |
| Systematical distortion | 34 |
By table ten as can be seen that by the relevant parameter design in table eight and nine, semi-transparent partly to penetrate face reflecting surface effectively burnt
Away from being 16.2mm for 1.5F and optical system thickness, and then 100 ° of big field angle can be obtained；By that will be arranged described
Aperture before optical amplifier module is designed as 3.3, i.e., corresponding diaphragm diameter D is 7mm, can obtain the big of 7mm accordingly
Eye movement range.
It designs that screen size is 2.1 inches, to connect eye-distance be 9mm simultaneously, in the MTF figures in conjunction with Figure 15, obtains each visual field
Mean ordinate (modulation transfer function) is higher than 0.18 abscissa (every millimeter of spatial frequency) value, and then obtains the short distance light
The resolution ratio of 1000*1000 can be supported by learning the visual angle parsing power of amplification module, the curvature of field control control in Figure 16 (- 2mm,
2mm) in range, the aberration rate in Figure 17 controls in the range of (- 34%, 0).
Embodiment five
Shown in Fig. 5, in the short distance optical amplifier module, also include on the basis of containing half-transmitting and half-reflecting mirror 2
The performance parameter of other lenses, other lenses is adaptively adjusted according to 2 parameter request of half-transmitting and half-reflecting mirror, other lenses
It mutually makes up and mutually promotes with half-transmitting and half-reflecting mirror 2, and the focal length of the second optical surface of the half-transmitting and half-reflecting mirror 2 is
3F, the design of half-transmitting and half-reflecting mirror 2 is referring to table 11：
Table 11：
The specific descriptions of this table can refer to the description in table one, and details are not described herein.
The refinement parameter of optical surface in the short distance optical amplifier module such as table 12：
The explanation of design parameter about upper table, reference table four.
The corresponding other parameters of the short distance optical amplifier module such as table 13：
| Screen size C (inch) | 1.3 |
| Field angle V (°) | 82 |
| System focal length F (mm) | 15 |
| It is semi-transparent partly to penetrate face reflecting surface effective focal length (fs2) | 3F |
| Eyebox eye movement range A (mm) | 5 |
| Screen resolution | 1000*1000 |
| Optical system thickness (mm) | 11.2 |
| Eye relif connect eye-distance (mm) | 7 |
| F# apertures | 3 |
| Optics overall diameter (mm) | 30 |
| Systematical distortion | 21.80% |
It is semi-transparent partly to penetrate face reflecting surface by table 13 as can be seen that by the relevant parameter design in table 11 and 12
Effective focal length is 3F and optical system thickness is 11.2mm, and then can obtain 82 ° of big field angle；By that will be arranged in institute
It states the aperture before optical amplifier module and is designed as 3, i.e., corresponding diaphragm diameter D is 5mm, can obtain the big of 5mm accordingly
Eye movement range.
It designs that screen size is 2.1 inches, to connect eye-distance be 9mm simultaneously, in the MTF figures in conjunction with Figure 18, obtains each visual field
Mean ordinate (modulation transfer function) is higher than 0.18 abscissa (every millimeter of spatial frequency) value, and then obtains the short distance light
The resolution ratio of 1000*1000 can be supported by learning the visual angle parsing power of amplification module, the curvature of field control control in Figure 19 (- 2mm,
2mm) in range, the aberration rate in Figure 20 controls in the range of (- 34%, 0).
Based on short distance optical amplifier module provided by the invention, the present invention also provides a kind of glasses, including above-mentioned implementation
Short distance optical amplifier module in example, the glasses further include screen 3, the screen 3 and the short distance optical amplifier mould
Organize coaxial or non-coaxial setting.Screen 3 and short distance optical amplifier module described in Fig. 1-5 is coaxial, here for expression side
Just, but in use screen 3 and short distance optical amplifier module can coaxially can not also be coaxial, voluntarily select according to actual needs
It selects.
Based on short distance optical amplifier module provided by the invention, the present invention also provides a kind of helmets, including above-mentioned implementation
Short distance optical amplifier module in example, the glasses further include screen 3, the screen 3 and the short distance optical amplifier mould
Organize coaxial or non-coaxial setting.Screen 3 and short distance optical amplifier module described in Fig. 1-5 is coaxial, here for expression side
Just, but in use screen 3 and short distance optical amplifier module can coaxially can not also be coaxial, voluntarily select according to actual needs
It selects.
Based on glasses provided by the invention and the helmet, the present invention also provides a kind of VR systems, including in above-described embodiment
Glasses or the helmet, be used for intelligence VR (Virtual Reality, virtual reality) wearable device use.In above-mentioned VR systems
The glasses or the helmet constituted using short distance optical amplifier module make it have preferable field angle, eye movement range, high quality
Imaging effect and small size superthin structure etc. will bring good experience to user, and specifically please refer to short distance optics
Amplify the embodiment of module, details are not described herein.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment
Point just to refer each other, and the highlights of each of the examples are the differences with other embodiments.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within made by modifications, equivalent substitutions and improvements etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of short distance optical amplifier module, which is characterized in that the first phase including being arranged in order arrangement postpones piece, semi-transparent
Half-reflecting mirror, second phase delay piece and reflection type polarizer are penetrated, wherein：
The half-transmitting and half-reflecting mirror includes the first optical surface and the second optical surface；
First optical surface postpones piece close to second phase；
Second optical surface is half-transmitting and half-reflecting optical surface, and second optical surface postpones piece close to first phase；
First focal length f of the half-transmitting and half-reflecting mirror meets the following conditions：1F≤f≤2F；
The focal length fs1 of first optical surface meets the following conditions：| fs1 | ＞ 2F；
The reflecting surface focal length fs2 of second optical surface meets the following conditions：1.5F≤fs2≤3F；
Wherein, F is the system focal length of the short distance optical amplifier module, and the F meets the following conditions：10mm≤F≤
35mm；
The thickness H of the short distance optical amplifier module meets the following conditions：8mm≤H≤30mm；
The eye-distance that connects of the short distance optical amplifier module is 5-15mm；
The adjustable extent of the aperture of object side is 1.7F-4F, and the light beam that the short distance optical amplifier module participates in imaging is passed through
Bore D meet the following conditions：0.3F ＜ D ＜ 0.6F；Eye movement ranging from 5-10mm.
2. a kind of glasses, which is characterized in that including short distance optical amplifier module described in claim 1, the glasses also wrap
Include screen, the screen and the short distance optical amplifier module be coaxial or non-coaxial setting.
3. a kind of helmet, which is characterized in that including short distance optical amplifier module described in claim 1, the helmet also wraps
Include screen, the screen and the short distance optical amplifier module be coaxial or non-coaxial setting.
4. a kind of VR systems, which is characterized in that including the glasses described in claim 2 or the helmet described in claim 3.
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| CN201610161947.XA CN105629494B (en) | 2016-03-21 | 2016-03-21 | A kind of short distance optical amplifier module, glasses, the helmet and VR systems |
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| CN105629494B true CN105629494B (en) | 2018-08-14 |
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| KR102162951B1 (en) | 2016-03-21 | 2020-10-07 | 쉔젠 들로들로 뉴 테크놀로지 컴퍼니 리미티드 | Near field optical amplification module, glasses, helmet and VR system |
| JP2018049106A (en) * | 2016-09-21 | 2018-03-29 | セイコーエプソン株式会社 | Optical element and display device |
| US11314097B2 (en) | 2016-12-20 | 2022-04-26 | 3M Innovative Properties Company | Optical system |
| KR102436559B1 (en) * | 2017-04-18 | 2022-08-25 | 엘지디스플레이 주식회사 | Display device having a display module and an eyepiece |
| CN110770638A (en) * | 2017-09-05 | 2020-02-07 | 深圳市柔宇科技有限公司 | Optical module, head-mounted electronic equipment and virtual reality system |
| WO2019119258A1 (en) * | 2017-12-19 | 2019-06-27 | 深圳市柔宇科技有限公司 | Optical system and near-eye display device |
| CN110208951A (en) * | 2019-07-19 | 2019-09-06 | 业成科技（成都）有限公司 | Wear the thin light optical system of virtual reality display device |
| CN111781698A (en) * | 2020-07-13 | 2020-10-16 | 成都忆光年文化传播有限公司 | Virtual display measuring and installing system |
| WO2024020797A1 (en) * | 2022-07-26 | 2024-02-01 | 歌尔光学科技有限公司 | Optical module and head-mounted display device |
| CN116699854B (en) * | 2023-07-27 | 2023-10-03 | 北京极溯光学科技有限公司 | Perspective optical system and equipment capable of realizing display shielding |
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