CN107219637A - Short distance optical amplifier module, glasses, the helmet and VR systems - Google Patents
Short distance optical amplifier module, glasses, the helmet and VR systems Download PDFInfo
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- CN107219637A CN107219637A CN201610164151.XA CN201610164151A CN107219637A CN 107219637 A CN107219637 A CN 107219637A CN 201610164151 A CN201610164151 A CN 201610164151A CN 107219637 A CN107219637 A CN 107219637A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 226
- 239000011521 glass Substances 0.000 title claims description 15
- 238000003384 imaging method Methods 0.000 claims abstract description 12
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- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
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- 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
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- 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
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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Abstract
The invention discloses short distance optical amplifier module, reflective polarizer, first phase delay piece, the 3rd lens and second phase delay piece including being arranged in order arrangement, wherein any position of any one optics both sides is additionally provided with the first lens and the second lens, the 3rd lens, postpones the optical surface of piece close to the second phase for half-transmitting and half-reflecting optical surface in reflective polarizer, first phase delay piece, the 3rd lens and second phase delay piece；First focal length f3 of the 3rd lens meets following condition：1F≤f3≤2F, wherein F are the system focal length of the short distance optical amplifier module.By carrying out parameter refinement to the f3 for influenceing optical amplifier effect, so that the module can also keep integral thickness smaller while larger optical amplifier effect is obtained, it can apply in small size VR equipment, enable the VR equipment to realize that the preferable angle of visual field, larger eye move scope, high-quality imaging effect, more preferable experience sense is brought to user.
Description
Technical field
The present invention relates to technical field of optical instrument, more particularly to short distance optical amplifier module, glasses, the helmet and VR systems.
Background technology
At present, there is short distance optical amplifier module, to meet the image quality of optical amplifier module, multiple optics are generally comprised in module, as shown in Figure 1, include reflective polarizer 01, first phase delay piece 02, lens unit 03 and second phase delay piece 04 successively from image side to thing side, the optical surface for postponing piece 04 in the lens unit 03, close to the second phase is semi-transflective reflective optical surface.Using process, the optical imagery of thing side carries out transmission amplification by the lens unit 03, then reflected on the reflective polarizer 01, again secondary amplification is carried out by the lens unit 03, enter human eye sight finally by the reflective polarizer 01, wherein, the core component of influence optical imagery amplification effect is the lens unit.
But, because each optics needs certain installing space, therefore optical amplifier module that multiple optics are constituted often size and volume all than larger, the ultra-thin structural requirement of intelligent VR (Virtual Reality, virtual reality) wearable device small sizes can not especially be met.The VR equipment being directed to is needed to design the short distance optics for still having high-amplification-factor in small space.Moreover, VR equipment is also more focused on providing good Consumer's Experience sense, this just requires that VR equipment needs to realize that preferably the angle of visual field, larger eye move the technical purposes such as scope, high-quality imaging effect again.These technical purposes are related directly to the optical characteristics of said lens group.
Therefore, in order to achieve the above object, it is necessary to carry out parameter setting to the lens group in short distance optical amplifier module, it is ensured that can realize above-mentioned purpose in the range of whole VR equipment use, more preferable experience sense is brought to user.
The content of the invention
A kind of short distance optical amplifier module is provided in the embodiment of the present invention, can be used with meeting in the VR equipment of small size, and realizes that VR equipment has the preferably angle of visual field, larger eye to move scope, the purpose of high-quality imaging effect.Meanwhile, additionally provide a kind of glasses, the helmet and VR systems.
In order to solve the above-mentioned technical problem, the embodiment of the invention discloses following technical scheme：
A kind of short distance optical amplifier module, reflective polarizer, first phase delay piece, the 3rd lens and second phase delay piece including being arranged in order arrangement, wherein any position of any one optics both sides is additionally provided with the first lens in reflective polarizer, first phase delay piece, the 3rd lens and second phase delay piece, and any position of any one optics both sides is provided with the second lens in reflective polarizer, first phase delay piece, the 3rd lens and second phase delay piece, wherein：The optical surface for postponing piece in 3rd lens, close to the second phase is half-transmitting and half-reflecting optical surface；First focal length f3 of the 3rd lens meets following condition：1F≤f3≤2F, wherein F are the system focal length of the short distance optical amplifier module.
It is preferred that, in above-mentioned short distance optical amplifier module, the first focal length f3 of the 3rd lens meets following condition：1.5F≤f3≤2F.
It is preferred that, in above-mentioned short distance optical amplifier module, the focal length fS6 of the half-transmitting and half-reflecting optical surface meets following condition：1.5F≤fS6≤5F.
It is preferred that, meet following condition in above-mentioned short distance optical amplifier module, the 3rd lens, close to the focal length fS5 of the optical surface of the second lens：|fS5|≥2F.
It is preferred that, in above-mentioned short distance optical amplifier module, the system focal length F of the short distance optical amplifier module meets following condition：10mm≤F≤32mm.
It is preferred that, in above-mentioned short distance optical amplifier module, the focal length f2 of second lens meets following condition：2F≤-f2.
It is preferred that, the focal length fS3 of the optical surface in above-mentioned short distance optical amplifier module, second lens close to the first lens meets following condition：|fS3|≥2F.
It is preferred that, the focal length fS4 of the optical surface in above-mentioned short distance optical amplifier module, second lens close to the 3rd lens meets following condition：|fS4|≥2F.
It is preferred that, in above-mentioned short distance optical amplifier module, the focal length f1 of first lens meets following condition：4F≤f1.
It is preferred that, the focal length fS2 of the optical surface in above-mentioned short distance optical amplifier module, first lens close to second lens is equal with the focal length f1 of first lens.
It is preferred that, in above-mentioned short distance optical amplifier module, the thickness of the optical amplifier module is 8mm~30mm.
It is preferred that, in above-mentioned short distance optical amplifier module, the bore D that light beam passed through for participating in imaging by first lens, the second lens and the 3rd lens meets following condition：0.3F≤D≤0.6F.
It is preferred that, in above-mentioned short distance optical amplifier module, the eye-distance that connects of the short distance optical amplifier module is 5~10mm.
In addition, present invention also offers a kind of glasses, including the short distance optical amplifier module described in above-mentioned any one, the glasses also include display screen, and the display screen and the short distance optical amplifier module be coaxial or non-coaxial setting.
Furthermore, present invention also offers a kind of helmet, including the helmet of short distance optical amplifier module described in above-mentioned any one also includes display screen, and the display screen and the short distance optical amplifier module be coaxial or non-coaxial setting.
Finally, present invention also offers a kind of VR systems, including described glasses or the described helmet.
From above technical scheme, the short distance optical amplifier module that the present invention is provided, by to influenceing the core component of optical amplifier effect --- the reflecting surface effective focal length of the 3rd lens carries out parameter refinement, so that the module, integral thickness can also be kept smaller while larger optical amplifier effect is obtained, the module is applied in the VR equipment of small size, and enable the VR equipment to realize that preferably the angle of visual field, larger eye move scope, high-quality imaging effect, and more preferable experience sense is brought to user.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, for those of ordinary skills, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of short distance optical amplifier module of the prior art；
Fig. 2A and Fig. 2 B are a kind of structural representation for short distance optical amplifier module that the embodiment of the present invention one is provided；
Fig. 3 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention one is provided；
Fig. 4 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention one is provided；
Fig. 5 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention one is provided；
Fig. 6 is a kind of structural representation for short distance optical amplifier module that the embodiment of the present invention two is provided；
Fig. 7 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention two is provided；
Fig. 8 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention two is provided；
Fig. 9 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention three is provided；
Figure 10 is a kind of structural representation for short distance optical amplifier module that the embodiment of the present invention three is provided；
Figure 11 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention three is provided；
Figure 12 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention three is provided；
Figure 13 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention three is provided；
Figure 14 is a kind of structural representation for short distance optical amplifier module that the embodiment of the present invention four is provided；
Figure 15 is a kind of distortion figure for short distance optical amplifier module that the embodiment of the present invention four is provided；
Figure 16 is a kind of curvature of field figure for short distance optical amplifier module that the embodiment of the present invention four is provided；
Figure 17 is a kind of MTF figures for short distance optical amplifier module that the embodiment of the present invention four is provided.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made should all belong to the scope of protection of the invention.
Referring to shown in Fig. 2A, Fig. 2 B, Fig. 6, Figure 10, Figure 14, the structural representation of short distance optical amplifier module provided in an embodiment of the present invention.The short distance optical amplifier module includes being arranged in order arrangement reflective polarizer, first phase postpones piece, 3rd lens 30 and second phase delay piece, wherein in reflective polarizer, first phase postpones piece, the any position of any one optics both sides is additionally provided with the first lens in 3rd lens 30 and second phase delay piece, and positioned at reflective polarizer, first phase postpones piece, the any position of any one optics both sides is additionally provided with the second lens in 3rd lens 30 and second phase delay piece, wherein, the reflective polarizer and the first phase postpone piece in Fig. 2A, Fig. 2 B, Figure 10, 50 are shown as in Figure 14, the display screen is 40, the second phase delay piece is not shown.First lens 10, the second lens 20 and the second lens 30 are the core component of influence optical amplifier effect, the system focal length F of composition is 10~28mm, meanwhile, can fit setting between first lens 10, the second lens 20 and the 3rd lens 30, it is possible to have certain spacing.
Defined in the present embodiment：In first lens 10 close to the first phase postpone piece be the first optical surface E1, close to second lens 20 be the second optical surface E2；It is the 4th optical surface E4 to postpone piece close to first lens 10 for the 3rd optical surface E3, close to the second phase in second lens 20；It is the 6th optical surface E6 to postpone piece close to second lens 20 for the 5th optical surface E5, close to the second phase in 3rd lens 30.
The optical imagery of thing side postpones piece through the second phase, 3rd lens 30, second lens 20, first lens 10, the reflective polarizer is reached after the first phase delay piece, produced at the reflective polarizer after first reflection through first phase delay piece, first lens 10, after second lens 20 and the 5th optical surface E5, reach the 6th optical surface E6, second lens 20 are sequentially passed through again after producing the second secondary reflection at the 6th optical surface E6, first lens 10, enter human eye sight after the first phase delay piece and the reflective polarizer, so optical imagery can complete two secondary reflections and amplification in the optical amplifier module, reach the requirement of optical magnification.
Wherein, the 3rd lens are the main sources of system focal power, meanwhile, the first lens 10 and the second lens 20 are set in the present embodiment, and two lens cooperate, system focal length can be shared, mutually balance each other difference, improves image quality.
During in order to which the short distance optical amplifier module being applied into intelligence VR wearable devices, the requirement of the preferably angle of visual field, eye dynamic scope, high-quality imaging effect and small size superthin structure, the first focal length f of the 3rd lens can be realized3(in the 3rd lens, reflecting the focal length of optical surface) meets following condition：
1F≤f3≤ 2F, (1)
Wherein F is the focal length for the optical system that first lens, the second negative lens and the 3rd lens are constituted.Wherein, incident light passes through the 5th optical surface E5, and measured focal length is defined as the 3rd lens focal length containing reflecting surface f after the 6th optical surface E6 reflections3.3rd lens (effective focal length containing reflecting surface) are the main sources of system focal power, if its focal power is excessive, such as close to the total focal power (f of system3≤ F), then aberration is difficult to correct；If too small (the f of its focal power3>=2F), then the focal power that other lenses are undertaken is excessive, it is necessary to increase lens to correct aberration, is unfavorable for system compact, lightweight.Wherein focal power is inversely proportional with focal length.Preferential, the first focal length f of the 3rd lens3Meet following condition：
1.5F≤f3≤ 2F, (2)
The system focal length F that first lens 10, the second negative lens 20 and the 3rd lens 30 are constituted is 10mm~32mm, meanwhile, can fit setting between three lens, it is possible to have certain spacing.As long as on the premise of system focal length is 10mm~32mm, the shape and position relationship of three lens are not restricted.
To the 3rd lens focal length containing reflecting surface f in above-mentioned (1) formula3It is made that limitation, such lens are engaged with screen size for 0.9~3 inch of screen, the whole optical system set, which can be obtained, the larger angle of visual field and can allow big screen resolution, wherein retrievable angle of visual field V is 90 °~100 °, admissible screen resolution is 800*800-4000*4000.
Based on miniaturization is reached, light-weighted optimization purpose sets the focal length f of the 6th optical surfaceS6, i.e. the focal length f in half-transmitting and half-reflecting faceS6Meet following condition：
1.5F≤fS6≤5F。 (3)
Wherein FS6The effective focal length reflected through the 6th optical surface is represented, the reflecting surface of the 6th optical surface E6 is the main source of system focal power, if its focal power is excessive, such as close to the total focal power (f of systemS6≤ F), then aberration is difficult to correct；Also result in simultaneously minute surface excessively bend, lens thickness it is larger, and then system thickness can be caused to increase, be unfavorable for the lightening requirement of VR wearable devices.If on the contrary, the too small (f of its focal powerS6>=5F), then the focal power that other lenses are undertaken is excessive, it is necessary to increase lens to correct aberration, is so just unfavorable for system compact and light-weighted requirement.
It is same based on reaching miniaturization, light-weighted optimization purpose, in above-mentioned 3rd lens, the focal length f of the 5th optical surfaceS5Meet following condition：
|fS5|≥2F (4)
If the focal length fS5It is too small, then the face type of the 3rd lens 30 can be caused excessively to bend, be unfavorable for aberration correction；Lens with the second lens 20, the 3rd 10 in general, type excessively curved lens thickness in face is larger, can cause the increase of optical system thickness, be unfavorable for the lightening requirement of VR wearable devices simultaneously.
It is same to be based on reaching miniaturization, light-weighted optimization purpose, the focal length f of second negative lens2Meet following condition：
2F≤-f2 (5)
If the focal length f2Too small (| f1|≤2F), then the face type of second lens 20 can be caused excessively to bend, introducing aberration is larger, cause the aberration of whole system to become big；Meanwhile, it can also increase the thickness of second lens 20, be unfavorable for the lightening requirement of VR wearable devices.
It is same based on reaching miniaturization, light-weighted optimization purpose, in the second lens 20, the focal length f of the 3rd optical surfaceS3Meet following condition：
|fS3|≥2F (6)
If the focal length FS3Too small (| FS3|≤2F), then the face type of the second lens 20 can be caused excessively to bend, be unfavorable for aberration correction；Lens with the first lens 10, the 3rd 30 in general, type excessively curved lens thickness in face is larger, can cause the increase of optical system thickness, be unfavorable for the lightening requirement of VR wearable devices simultaneously.
It is same based on reaching miniaturization, light-weighted optimization purpose, in the second lens 20, the focal length f of the 4th optical surfaceS4Meet following condition：
|fS4|≥2F (7)
If the focal length FS4Too small (| FS4|≤2F), then the face type of the second lens 20 can be caused excessively to bend, be unfavorable for aberration correction；Lens with the first lens 10, the 3rd 30 in general, excessively face type curved lens thickness is larger, can cause the increase of optical system thickness, be unfavorable for the lightening requirement of VR wearable devices simultaneously.
It is same to be based on reaching miniaturization, light-weighted optimization purpose, the focal length f of first lens1Meet following condition：
4F≤f1 (8)
If the focal length f1Too small (| f1|≤4F), then the face type of first lens 10 can be caused excessively to bend, introducing aberration is larger, cause the difference of whole system to become big；Meanwhile, it can also increase the thickness of first lens 10, be unfavorable for the lightening requirement of VR wearable devices.
In order to reach VR wearable devices small size, superthin structure requirement, the thickness of the optical amplifier module is 8mm~30mm.
Consider that preferable image quality can be obtained again while VR equipment wear comforts, the eye-distance that connects of the short distance optical amplifier module is designed as 5mm~10mm.
As shown in Figure 2 A, scope is moved in order to obtain big eye, while preferable image quality can be obtained again, the adjustable extent of the aperture of thing side is designed as 1.7F~3.5F, i.e., the bore D that light beam passed through for participating in imaging by first lens, second lens and the 3rd lens meets following condition：
0.3F≤D≤0.6F (9)
Corresponding with equation (9), eye moves scope A and can reach as 5mm~9mm.
On the basis of each above-mentioned technical scheme, the short distance optical amplifier module after optimizing for several times can apply in a kind of VR glasses, and the glasses also include display screen, and the display screen and the short distance optical amplifier module be coaxial or non-coaxial setting.It is as shown in Figure 2 A situation about being coaxially disposed, Fig. 2 B are the situation of non-coaxial setting, regardless of whether being coaxially disposed does not influence optical amplifier the effect extremely angle of visual field and eye of the module to move scope.
On the basis of each above-mentioned technical scheme, short distance optical amplifier module after optimizing for several times can also be applied to a kind of helmet, and the helmet also includes display screen, and the display screen and the short distance optical amplifier module be coaxial or non-coaxial setting.
The short distance amplification module that the present invention can also be provided is applied to a kind of VR systems, and the system can include above-mentioned glasses or the helmet, or other are adapted to the wearable device with Consumer's Experience.
Short distance optical amplifier module is provided below in conjunction with subordinate list to the present embodiment to be described further.
In each example, in the specific design parameter list of first lens 10, the second lens 20 and the 3rd lens 30, OBJ represents the thing in optical system, IMA represents the picture in optical system, STO represents the diaphragm in optical system, i represents the order (i0)+1 of optical surface from an object side, the second lens 20 on the right side of the first directive of the first lens 10 on the left of light, lens 30 of directive the 3rd again, run into material (Glass) and be classified as MIRROR and reflect to walk toward opposite direction, reflex to second MIRROR reverse again, then walk from left to right, be finally reached image planes.
Embodiment one
As shown in Fig. 2 in the short distance optical amplifier module, designing the f of focal length containing reflecting surface of the 3rd lens 303Equal to system focal length F,
The specific design parameter such as table one of first lens 10, the second lens 20 and the 3rd lens 30：
In Table 1, the first row OBJ represents the relevant design parameter of object plane；The third line STO represents the diaphragm in optical system, and the aperture is 9mm；Fourth line and fifth line represent the diaphragm of reflective polarizer in optics module and first phase delay piece formation, and the type of the diaphragm is that STANDARD index planes, material are that BK7, diameter 30.18156mm, asphericity coefficient are 0；6th row and the 7th row represent the corresponding data of the first optical surface E1 and the second optical surface E2 of first lens 10 respectively, the first optical surface E and the second optical surface E2 radius of curvature are Infinity planes, and the thickness of first lens 10 is that 2mm (i.e. the spacing from the first optical surface E1 to the second optical surface E2, the thickness value in the 6th row data), material are H-LAK5A；8th row and the 9th row represent the 3rd optical surface E3 and the corresponding data of the 4th optical surface E4 of second lens 20 respectively, the radius of curvature of the 3rd optical surface E3 is that Infinity planes, the radius of curvature of the 4th optical surface E4 are Infinity planes, and the thickness of second lens 20 is that 1.5mm (i.e. the spacing from the 3rd optical surface E3 to the 4th optical surface E4, the thickness value in the 8th row data), material are H-ZF13.Tenth row and the tenth a line represent the 5th optical surface E5 and the corresponding data of the 6th optical surface E6 of the 3rd lens 30 respectively, the radius of curvature of the 5th optical surface E5 is respectively -68 and -66.19397, and the thickness of the 3rd lens 30 is that 2mm (i.e. the spacing from the 5th optical surface E5 to the 6th optical surface E6, the thickness value in the tenth row data), material are H-LAK10.
12nd row to the 20th five-element represents the relevant parameter in reflection and transmission of the light between the diaphragm, the first lens 10, the second lens 20 and the 3rd lens 30.26th row represents the glass-film in display screen liquid crystal layer, and the thickness of the glass-film is that 0.3mm, material are BK7.27th row IMA represents the picture in optical system.
The corresponding other parameters of the short distance optical amplifier module such as table two：
Table two
From Fig. 5 MTF figures, draw abscissa (every millimeter of spatial frequency) value that each visual field mean ordinate (modulation transfer function) is higher than 0.18, aberration rate in Fig. 3 is controlled (- 30%, 0) in the range of, the curvature of field in Fig. 4 is controlled in the range of (- 10mm, 10mm), and show that the visual angle parsing power of the short distance optical amplifier module can support 400*400 resolution ratio, that is when the 3rd lens focal length containing reflecting surface is 1F, fS6When focal length is 1F, integral thickness can also be kept smaller while larger optical amplifier effect is obtained, the module is applied in the VR equipment of small size, and enable the VR equipment to realize that preferably 100 ° of the angle of visual field, larger eye move scope 9mm, high-quality imaging effect, screen resolution is 800*800, and more preferable experience sense is brought to user.
Embodiment two
As shown in fig. 6, in the short distance optical amplifier module, designing the f of focal length containing reflecting surface of the 3rd lens 303Equal to system focal length 1.37F,
The specific design parameter such as table three of first lens 10, the second lens 20 and the 3rd lens 30：
Table three
In table three, the first row OBJ represents the relevant design parameter of object plane；The third line STO represents the diaphragm in optical system, and the aperture is 9mm；Fourth line and fifth line represent the diaphragm of reflection type polarizer in optics module and first phase delay piece formation, and the type of the diaphragm is that STANDARD index planes, material are that BK7, diameter 26.09264mm, asphericity coefficient are 0；6th row and the 7th row represent the corresponding data of the first optical surface E1 and the second optical surface E2 of first lens 10 respectively, the first optical surface E and the second optical surface E2 radius of curvature are respectively Infinity planes and -89.75873, and the thickness of first lens 10 is that 2mm (i.e. the spacing from the first optical surface E1 to the second optical surface E2, the thickness value in the 6th row data), material are H-K9L；8th row and the 9th row represent the 3rd optical surface E3 and the corresponding data of the 4th optical surface E4 of second lens 20 respectively, and the radius of curvature of the 3rd optical surface E3 is respectively that the 84.66267 and 54.38812, thickness of second lens 20 is that 1mm (i.e. the spacing from the 3rd optical surface E3 to the 4th optical surface E4, the thickness value in the 8th row data), material are H-ZF11.Tenth row and the tenth a line represent the 5th optical surface E5 and the corresponding data of the 6th optical surface E6 of the 3rd lens 30 respectively, the radius of curvature of the 5th optical surface E5 is respectively 160.6342 and -54.28037, and the thickness of the 3rd lens 30 is that 4mm (i.e. the spacing from the 5th optical surface E5 to the 6th optical surface E6, the thickness value in the tenth row data), material are D-LAK70.
12nd row to the 20th five-element represents the relevant parameter in reflection and transmission of the light between the diaphragm, the first lens 10, the second lens 20 and the 3rd lens.26th row represents the glass-film in display screen liquid crystal layer, and the thickness of the glass-film is that 1mm, material are BK7.27th row IMA represents the picture in optical system.
The corresponding other parameters of the short distance optical amplifier module such as table four：
Table four
From Fig. 9 MTF figures, draw abscissa (every millimeter of spatial frequency) value that each visual field mean ordinate (modulation transfer function) is higher than 0.18, aberration rate in Fig. 7 is controlled (- 30.5%, 0) in the range of, curvature of field control in Fig. 8 is controlled in (- 0.2mm, in the range of 0.2mm), and then show that the visual angle parsing power of the short distance optical amplifier module can support 400*400 resolution ratio, that is when the 3rd lens focal length containing reflecting surface is 1.37F, fS6When focal length is 2F, integral thickness can also be kept smaller while larger optical amplifier effect is obtained, the module is applied in the VR equipment of small size, and enable the VR equipment to realize that preferably 96 ° of the angle of visual field, larger eye move scope 7mm, high-quality imaging effect 1800*1800, and more preferable experience sense is brought to user.
Embodiment three
As shown in Figure 10, in the short distance optical amplifier module, the f of focal length containing reflecting surface of the 3rd lens 30 is designed3Equal to system focal length 1.5F,
The specific design parameter such as table five of first lens 10, the second lens 20 and the 3rd lens 30：
Table five
| Surf | Type | Comment | Radius | Thickness | Glass | Diameter | Conic |
| OBJ | STANDARD | Infinity | Infinity | 0 | 0 | ||
| 1 | PARAXIAL | - | 0 | 9 | - | ||
| STO | STANDARD | Infinity | 9 | 9 | 0 | ||
| 3 | STANDARD | Infinity | 0.3 | BK7 | 30.18156 | 0 | |
| 4 | STANDARD | Infinity | 0 | 30.53068 | 0 | ||
| 5 | STANDARD | Infinity | 4 | H-LAK5A | 30.53068 | 0 | |
| 6 | STANDARD | -126.3604 | 2.51823 | 33.47865 | 0 | ||
| 7 | STANDARD | 252.9636 | 1.5 | H‐ZF13 | 41.40807 | 0 | |
| 8 | STANDARD | 123.3701 | 1.701081 | 43.19258 | 0 | ||
| 9 | STANDARD | 269.2846 | 5.5 | H-LAK10 | 44.98185 | 0 | |
| 10 | STANDARD | -101.0977 | -5.5 | MIRROR | 46.69545 | 0 | |
| 11 | STANDARD | 269.2846 | 1.701081 | 46.59742 | 0 | ||
| 12 | STANDARD | 123.3701 | -1.5 | H-ZF13 | 46.49442 | 0 | |
| 13 | STANDARD | 252.9636 | -2.51823 | 46.6367 | 0 | ||
| 14 | STANDARD | -126.3604 | -4 | H-LAK5A | 46.36075 | 0 | |
| 15 | STANDARD | Infinity | 0 | 46.02962 | 0 | ||
| 16 | STANDARD | Infinity | -0.3 | BK7 | 46.02962 | 0 | |
| 17 | STANDARD | Infinity | 0.3 | MIRROR | 45.97037 | 0 | |
| 18 | STANDARD | Infinity | 0 | 45.91112 | 0 | ||
| 19 | STANDARD | Infinity | 4 | H-LAK5A | 45.91112 | 0 | |
| 20 | STANDARD | -126.3604 | 2.51823 | 45.56688 | 0 | ||
| 21 | STANDARD | 252.9636 | 1.5 | H-ZF13 | 42.38623 | 0 | |
| 22 | STANDARD | 123.3701 | 1.701081 | 41.45218 | 0 | ||
| 23 | STANDARD | 269.2846 | 5.5 | H-LAK10 | 41.13083 | 0 | |
| 24 | STANDARD | -101.0977 | 0.5 | 4.025954 | 0 | ||
| 25 | STANDARD | Infinity | 0.3 | BK7 | 37.9971 | 0 | |
| 26 | STANDARD | Infinity | 0 | 37.89037 | 0 | ||
| IMA | STANDARD | Infinity | 37.89037 | 0 |
In table five, the first row OBJ represents the relevant design parameter of object plane；The third line STO represents the diaphragm in optical system, and the aperture is 9mm；Fourth line and fifth line represent the diaphragm of reflection type polarizer in optics module and first phase delay piece formation, and the type of the diaphragm is that STANDARD index planes, material are that BK7, diameter 30.18156mm, asphericity coefficient are 0；6th row and the 7th row represent the corresponding data of the first optical surface E1 and the second optical surface E2 of first lens 10 respectively, the first optical surface E and the second optical surface E2 radius of curvature are respectively Infinity planes and -126.3604, and the thickness of first lens 10 is that 4mm (i.e. the spacing from the first optical surface E1 to the second optical surface E2, the thickness value in the 6th row data), material are H-LAK5A；8th row and the 9th row represent the 3rd optical surface E3 and the corresponding data of the 4th optical surface E4 of second lens 20 respectively, and the radius of curvature of the 3rd optical surface E3 is respectively that the 252.9636 and 123.3701, thickness of second lens 20 is that 1.5mm (i.e. the spacing from the 3rd optical surface E3 to the 4th optical surface E4, the thickness value in the 8th row data), material are H-ZF13.Tenth row and the tenth a line represent the 5th optical surface E5 and the corresponding data of the 6th optical surface E6 of the 3rd lens 30 respectively, the radius of curvature of the 5th optical surface E5 is respectively 269.2846 and -101.0977, and the thickness of the 3rd lens 30 is that 5.5mm (i.e. the spacing from the 5th optical surface E5 to the 6th optical surface E6, the thickness value in the tenth row data), material are H-LAK10.
12nd row to the 20th five-element represents the relevant parameter in reflection and transmission of the light between the diaphragm, the first lens 10, the second lens 20 and the 3rd lens.26th row represents the glass-film in display screen liquid crystal layer, and the thickness of the glass-film is that 0.3mm, material are BK7.27th row IMA represents the picture in optical system.
The corresponding other parameters of the short distance optical amplifier module such as table six：
Table six
From Figure 13 MTF figures, draw abscissa (every millimeter of spatial frequency) value that each visual field mean ordinate (modulation transfer function) is higher than 0.18, aberration rate in Figure 11 is controlled (- 34%, 0) in the range of, curvature of field control in Figure 12 is controlled in (- 0.2mm, in the range of 0.2mm), and then show that the visual angle parsing power of the short distance optical amplifier module can support 400*400 resolution ratio.That is when the 3rd lens focal length containing reflecting surface is 1.5F, fS6When focal length is 2.1F, integral thickness can also be kept smaller while larger optical amplifier effect is obtained, the module is applied in the VR equipment of small size, and enable the VR equipment to realize that preferably 100 ° of the angle of visual field, larger eye move scope 9mm, high-quality imaging effect 4000*4000, and more preferable experience sense is brought to user.
Example IV
As shown in figure 14, in the short distance optical amplifier module, the f of focal length containing reflecting surface of the 3rd lens 30 is designed3Equal to system focal length 2F,
The specific design parameter such as table seven of first lens 10, the second lens 20 and the 3rd lens 30：
Table seven
In table seven, the first row OBJ represents the relevant design parameter of object plane；The third line STO represents the diaphragm in optical system, and the aperture is 9mm；Fourth line and fifth line represent the diaphragm of reflection type polarizer in optics module and first phase delay piece formation, and the type of the diaphragm is that STANDARD index planes, material are that BK7, diameter 30.18156mm, asphericity coefficient are 0；6th row and the 7th row represent the corresponding data of the first optical surface E1 and the second optical surface E2 of first lens 10 respectively, the first optical surface E and the second optical surface E2 radius of curvature are respectively Infinity planes and -90.62525, and the thickness of first lens 10 is that 6mm (i.e. the spacing from the first optical surface E1 to the second optical surface E2, the thickness value in the 6th row data), material are H-LAK5A；8th row and the 9th row represent the 3rd optical surface E3 and the corresponding data of the 4th optical surface E4 of second lens 20 respectively, and the radius of curvature of the 3rd optical surface E3 is respectively that the 99 and 84.62125, thickness of second lens 20 is that 1.5mm (i.e. the spacing from the 3rd optical surface E3 to the 4th optical surface E4, the thickness value in the 8th row data), material are H-ZF13.Tenth row and the tenth a line represent the 5th optical surface E5 and the corresponding data of the 6th optical surface E6 of the 3rd lens 30 respectively, the radius of curvature difference Infinity planes of the 5th optical surface E5 are and -160, and the thickness of the 3rd lens 30 is that 4mm (i.e. the spacing from the 5th optical surface E5 to the 6th optical surface E6, the thickness value in the tenth row data), material are H-LAK10.
12nd row to the 20th five-element represents the relevant parameter in reflection and transmission of the light between the diaphragm, the first lens 10, the second lens 20 and the 3rd lens.26th row represents the glass-film in display screen liquid crystal layer, and the thickness of the glass-film is that 0.3mm, material are BK7.27th row IMA represents the picture in optical system.
The corresponding other parameters of the short distance optical amplifier module such as table eight：
Table eight
From Figure 17 MTF figures, draw abscissa (every millimeter of spatial frequency) value that each visual field mean ordinate (modulation transfer function) is higher than 0.18, aberration rate in Figure 15 is controlled (- 33.6%, 0) in the range of, the curvature of field in Figure 16 is controlled in (- 2mm, in the range of 2mm), and then show that the visual angle parsing power of the short distance optical amplifier module can support 400*400 resolution ratio.That is when the 3rd lens focal length containing reflecting surface is 2F, fS6When focal length is 2.67F, integral thickness can also be kept smaller while larger optical amplifier effect is obtained, the module is applied in the VR equipment of small size, and enable the VR equipment to realize that preferably 100 ° of the angle of visual field, larger eye move scope 9mm, high-quality imaging effect 1200*1200, and more preferable experience sense is brought to user.Simultaneously, it should be pointed out that when, when the 3rd lens focal length containing reflecting surface be 2F, fS6Focal length can also be not configured to 2.67F, as long as the focal length by adjusting the first lens and/or the second lens, fS6Above-mentioned technical purpose can be achieved in the range of 1F-5F.
It should be noted that, herein, the relational terms of such as " first " and " second " or the like are used merely to make a distinction an entity or operation with another entity or operation, and not necessarily require or imply between these entities or operation there is any this actual relation or order.And, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that process, method, article or equipment including a series of key elements not only include those key elements, but also other key elements including being not expressly set out, or also include for this process, method, article or the intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that also there is other identical element in the process including the key element, method, article or equipment.
Described above is only the embodiment of the present invention, is made skilled artisans appreciate that or realizing of the invention.A variety of modifications to these embodiments be will be apparent to one skilled in the art, and generic principles defined herein can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the most wide scope consistent with features of novelty with principles disclosed herein.
Described above is only the embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (16)
1. short distance optical amplifier module, it is characterised in that prolong including being arranged in order the reflective polarizer of arrangement, first phase
Slow piece, the 3rd lens and second phase delay piece, wherein reflective polarizer, first phase delay piece, the 3rd lens and second
Any position of the optics of any one in phase delay chip both sides is additionally provided with the first lens, and positioned at reflective polarizer,
Any position of any one optics both sides is provided with second in first phase delay piece, the 3rd lens and second phase delay piece
Lens, wherein：The optical surface for postponing piece in 3rd lens, close to the second phase is half-transmitting and half-reflecting optical surface；
First focal length f of the 3rd lens3Meet following condition：1F≤f3≤ 2F, wherein F are the short distance optical amplifier module
System focal length.
2. short distance optical amplifier module according to claim 1, it is characterised in that the first focal length of the 3rd lens
f3Meet following condition：1.5F≤f3≤2F。
3. short distance optical amplifier module according to claim 1, it is characterised in that the half-transmitting and half-reflecting optical surface
Focal length fS6Meet following condition：1.5F≤fS6≤5F。
4. short distance optical amplifier module according to claim 1, it is characterised in that in the 3rd lens, close to the
The focal length f of the optical surface of two lensS5Meet following condition：|fS5|≥2F。
5. according to any described short distance optical amplifier module in claim 1-4, it is characterised in that the short distance optics
The system focal length F of amplification module meets following condition：10mm≤F≤32mm.
6. short distance optical amplifier module according to claim 5, it is characterised in that the focal length f of second lens2
Meet following condition：2F≤-f2。
7. short distance optical amplifier module according to claim 5, it is characterised in that close to first in second lens
The focal length f of the optical surface of lensS3Meet following condition：|fS3|≥2F。
8. short distance optical amplifier module according to claim 5, it is characterised in that close to the 3rd in second lens
The focal length f of the optical surface of lensS4Meet following condition：|fS4|≥2F。
9. short distance optical amplifier module according to claim 5, it is characterised in that the focal length f of first lens1
Meet following condition：4F≤f1。
10. short distance optical amplifier module according to claim 9, it is characterised in that close to institute in first lens
State the focal length f of the optical surface of the second lensS2With the focal length f of first lens1It is equal.
11. according to any described short distance optical amplifier modules of claim 1-5, it is characterised in that the optical amplifier mould
The thickness of group is 8mm~30mm.
12. according to any described short distance optical amplifier modules of claim 1-5, it is characterised in that saturating by described first
The bore D that light beam passed through that mirror, the second lens and the 3rd lens participate in imaging meets following condition：0.3F≤D≤0.6F.
13. according to any described short distance optical amplifier modules of claim 1-5, it is characterised in that the short distance optics
The eye-distance that connects of amplification module is 5~10mm.
14. a kind of glasses, it is characterised in that including the short distance optical amplifier module described in any one in claim 1-13,
The glasses also include display screen, and the display screen and the short distance optical amplifier module be coaxial or non-coaxial setting.
15. a kind of helmet, it is characterised in that including the short distance optical amplifier module described in any one in claim 1-13,
The helmet also includes display screen, and the display screen and the short distance optical amplifier module be coaxial or non-coaxial setting.
16. a kind of VR systems, it is characterised in that including the helmet described in the glasses or claim 15 described in claim 14.
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