CN105676477A - Short range optical amplification module, glasses, helmet and VR system - Google Patents
Short range optical amplification module, glasses, helmet and VR system Download PDFInfo
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- CN105676477A CN105676477A CN201610162368.7A CN201610162368A CN105676477A CN 105676477 A CN105676477 A CN 105676477A CN 201610162368 A CN201610162368 A CN 201610162368A CN 105676477 A CN105676477 A CN 105676477A
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- 238000003384 imaging method Methods 0.000 claims abstract description 8
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- 230000004424 eye movement Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 description 24
- 230000004075 alteration Effects 0.000 description 13
- 210000001508 eye Anatomy 0.000 description 13
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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
- G02B27/28—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
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Abstract
The embodiment of the invention discloses a short range optical amplification module, glasses, a helmet and a VR system. The short range optical amplification module comprises a reflection type polaroid, a first phase delay sheet, a second lens and a second phase delay sheet; a first lens is arranged at any position on two sides of any optical element selected from the group composed of the reflection type polaroid, the first phase delay sheet, the second lens and the second phase delay sheet; the optical surface in the second lens close to the second phase delay sheet is a semi-transmissive semi-reflective layer optical surface; the first focal length f2 of the second lens meets:1F<=f2<=2F, wherein F is the system focal length of the optical amplification module. According to the invention, the parameters of the first focal length f2 influencing an optical amplification effect are refined, allowing the module to maintain smaller overall thickness at the same time of obtaining greater optical amplification effects, allowing a VR device to realize a better field angle, a larger eye movement scope and high quality imaging effects, and providing better experiences for users.
Description
Technical field
The present invention relates to a kind of optical instrument, particularly relate to a kind of short distance optical amplifier module, glasses, the helmet and VR system.
Background technology
In existing optical amplifier modular structure, as shown in Figure 1, including being arranged in order layout reflective polarizer 01, first phase retardation plate 02, lens unit 03 and second phase retardation plate 04, in described lens unit 03, near the optical surface of described second phase retardation plate 04 be half-transmitting and half-reflecting optical surface. In use, optical imagery carries out transmission amplification by described lens unit 03, then reflects on described reflective polarizer 01, carries out secondary amplification then through described lens unit 03, enter human eye sight finally by described reflective polarizer 01. Further, in described reflective polarizer 01, described first phase retardation plate 02, described second lens 03 and described second phase retardation plate 04, the both sides any position of any one optical element is additionally provided with other lens unit not affecting light phase time delay. Described lens unit 03 and other lens unit form battery of lens, and described battery of lens is the core component affecting optical imagery amplification effect.
Due to intelligence VR (VirtualReality, virtual reality) wearable device is to provide good Consumer's Experience sense, needs realize the preferably angle of visual field, the dynamic scope of eye, high-quality imaging effect and small size superthin structure etc., in order to achieve the above object, it is necessary to the battery of lens of optical amplifier modular structure is optimized design. And existing optical amplifier modular structure is not optimized design, therefore cannot ensure all can realize above-mentioned purpose in gamut, namely cannot ensure to bring good experience sense to user.
Summary of the invention
The embodiment of the present invention provides a kind of short distance optical amplifier module, glasses, the helmet and VR system, the problem low to solve intelligence of the prior art VR wearable device Consumer's Experience sense.
In order to solve above-mentioned technical problem, the embodiment of the invention discloses following technical scheme:
According to the first aspect of the invention, it is provided that a kind of short distance optical amplifier module, including being arranged in order layout reflective polarizer, first phase retardation plate, the second lens and second phase retardation plate, wherein:
In described reflective polarizer, described first phase retardation plate, described second lens and described second phase retardation plate, the both sides any position of any one optical element is additionally provided with the first lens;
In described second lens, near the optical surface of described second phase retardation plate be half-transmitting and half-reflecting optical surface;
First focal distance f 2 of described second lens meets the following conditions: 1F≤f2≤2F, F is by the system focal of described short distance optical amplifier module.
Preferably, the reflecting surface effective focal length fs4 of described half-transmitting and half-reflecting optical surface meets the following conditions: 1.5F≤fs4≤5F.
Preferably, the reflecting surface effective focal length fs4 of described half-transmitting and half-reflecting optical surface meets the following conditions: 1F≤fs4≤2F.
Preferably, the first focal distance f 2 of described second lens meets the following conditions: 1.5F≤f2≤2F.
Preferably, the first focal distance f 2 of described second lens is 1.6F.
Preferably, in described second lens, meet the following conditions near the optical surface focal distance f s3 of described first lens: | fs3 | >=2F.
Preferably, the focal distance f 1 of described first lens meets the following conditions: | f1 | >=3F.
Preferably, the thickness of described short distance optical amplifier module is 11mm～28mm.
Preferably, the eye-distance that connects of described short distance optical amplifier module is 5mm～10mm.
Preferably, the bore D that the light beam participating in imaging through described second lens and described first lens passes through meets the following conditions: 0.28F≤D≤0.45F.
Second aspect according to embodiments of the present invention, it is provided that a kind of short distance optical amplifier glasses, including above-mentioned short distance optical amplifier module, also includes display screen, described display screen and the described coaxial or non-coaxial setting of short distance optical amplifier module.
The third aspect according to embodiments of the present invention, it is provided that a kind of short distance optical amplifier helmet, including above-mentioned short distance optical amplifier module, also includes display screen, described display screen and the described coaxial or non-coaxial setting of short distance optical amplifier module.
Fourth aspect according to embodiments of the present invention, it is provided that a kind of short distance optical amplifier VR system, including above-mentioned glasses or the helmet.
From above technical scheme, the present embodiment is by carrying out parameter refinement to the first focal distance f 2 affecting optical amplifier effect, make this module integral thickness can also be kept less while obtaining bigger optical amplifier effect, make this VR equipment can realize the preferably angle of visual field, bigger eye and move scope, high-quality imaging effect, bring better experience sense to user.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, for those of ordinary skills, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of short distance optical amplifier module of the prior art;
The structural representation of a kind of short distance optical amplifier module that Fig. 2 provides for the embodiment of the present invention one;
The MTF figure of a kind of short distance optical amplifier module that Fig. 3 provides for the embodiment of the present invention one;
The distortion figure of a kind of short distance optical amplifier module that Fig. 4 provides for the embodiment of the present invention one;
The curvature of field figure of a kind of short distance optical amplifier module that Fig. 5 provides for the embodiment of the present invention one;
The structural representation of a kind of short distance optical amplifier module that Fig. 6 provides for the embodiment of the present invention two;
The MTF figure of a kind of short distance optical amplifier module that Fig. 7 provides for the embodiment of the present invention two;
The distortion figure of a kind of short distance optical amplifier module that Fig. 8 provides for the embodiment of the present invention two;
The curvature of field figure of a kind of short distance optical amplifier module that Fig. 9 provides for the embodiment of the present invention two;
The structural representation of a kind of short distance optical amplifier module that Figure 10 provides for the embodiment of the present invention three;
The MTF figure of a kind of short distance optical amplifier module that Figure 11 provides for the embodiment of the present invention three;
The distortion figure of a kind of short distance optical amplifier module that Figure 12 provides for the embodiment of the present invention three;
The curvature of field figure of a kind of short distance optical amplifier module that Figure 13 provides for the embodiment of the present invention three;
The structural representation of a kind of short distance optical amplifier module that Figure 14 provides for the embodiment of the present invention four;
The MTF figure of a kind of short distance optical amplifier module that Figure 15 provides for the embodiment of the present invention four;
The distortion figure of a kind of short distance optical amplifier module that Figure 16 provides for the embodiment of the present invention four;
The curvature of field figure of a kind of short distance optical amplifier module that Figure 17 provides for the embodiment of the present invention four
The structural representation of a kind of short distance optical amplifier module that Figure 18 provides for the embodiment of the present invention four;
The MTF figure of a kind of short distance optical amplifier module that Figure 19 provides for the embodiment of the present invention four;
The distortion figure of a kind of short distance optical amplifier module that Figure 20 provides for the embodiment of the present invention four;
The curvature of field figure of a kind of short distance optical amplifier module that Figure 21 provides for the embodiment of the present invention four.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that 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 present 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 obtain under not making creative work premise, all should belong to the scope of protection of the invention.
Shown in Fig. 2, Fig. 6, Figure 10, Figure 14 and Figure 18, for the structural representation of the short distance optical amplifier module that the embodiment of the present invention provides. Described short distance optical amplifier module includes being arranged in order the reflective polarizer of layout, first phase retardation plate, the second lens 20 and second phase retardation plate, wherein, in described reflective polarizer, described first phase retardation plate, described second lens 20 and described second phase retardation plate, the both sides any position of any one optical element is additionally provided with the first lens 10; Wherein, described reflective polarizer, described first phase retardation plate and described second phase retardation plate are not shown in figures, are specifically referred to Fig. 1. It should be noted that the first lens 10 described in the accompanying drawing of the present embodiment offer are arranged on the left side of described second lens 20, but in actual applications, described first lens 10 can also be arranged on the right side of described second lens 20, and this is no longer going to repeat them.
Described first lens 10 and the second lens 20 are the core component affecting optical amplifier effect, and the system focal F that both are constituted is 15mm～35mm, but is not limited to described scope of data, can also be such as 8mm～30mm;Meanwhile, can fit between described first lens 10 and described second lens 20 setting, it is possible to have certain spacing.
The present embodiment defines, in described first lens 10 near the optical surface in left side be the first optical surface E1, optical surface near right side be the second optical surface E2; In described second lens 20 near the optical surface in left side be the 3rd optical surface E3, optical surface near right side be the 4th optical surface E4.
The optical imagery of thing side is through described second phase retardation plate, described second lens 20, described first lens 10, described reflective polarizer is arrived after described first phase retardation plate, after described reflective polarizer place produces first reflection after described first phase retardation plate, arrive described 4th optical surface E4, human eye sight is entered after sequentially passing through described first phase retardation plate and described reflective polarizer again after described 4th optical surface E4 place produces second time reflection, such optical imagery can complete two secondary reflections and amplification in described short distance optical amplifier module, reach the requirement of optical magnification.
Meanwhile, arranging the first lens 10 and the second lens 20 in the present embodiment, two lens cooperate, it is possible to share system focal, balance aberration mutually, improve image quality.
During in order to realize being applied to described short distance optical amplifier module intelligence VR wearable device, being capable of the requirement of the preferably angle of visual field, the dynamic scope of eye, high-quality imaging effect and small size superthin structure, the first focal distance f 2 of described second lens 20 meets the following conditions:
F≤f2≤2F(1)
Wherein, incident illumination is defined as the first focal distance f 2 through described 3rd optical surface E3 by measured focal length after described 4th optical surface E4 reflection.
First focal distance f 2 of described second lens 20 is the main source of system focal power, if the focal power containing reflecting surface is excessive, as close to the total focal power of system (f2<F), then aberration is difficult to correct; If the focal power containing reflecting surface too small (f2>2F), then the focal power that other lenses is undertaken is excessive, it is necessary to increases lens and corrects aberration, is unfavorable for system compact and lightweight
Conditional (1) defines the concrete scope of the first focal distance f 2 of described second lens 20, in optical system, use the screen being of a size of 1.3～2.6 inches simultaneously, just can obtain the bigger angle of visual field and big screen resolution can be allowed, wherein retrievable angle of visual field V be 90 °～100 °, admissible screen resolution be 800*800～4000*4000.
In described second lens 20, the reflecting surface effective focal length fs4 of described 4th optical surface E4 meets the following conditions:
1.5F≤fs4≤5F(2)
In the present embodiment, the focal length that incident illumination records after described 4th optical surface E4 reflection is defined as reflecting surface effective focal length fs4.
The reflecting surface of described 4th optical surface E4 is the main source of system focal power, if its focal power is excessive, as close to the total focal power of system (fs4<F), then aberration is difficult to correct; Also result in simultaneously minute surface excessively bend, lens thickness relatively big, and then can cause that system thickness increases, be unfavorable for meeting the requirement that VR wearable device is lightening. On the contrary, if its focal power too small (fs4>5F), then the focal power that other lenses is undertaken is excessive, it is necessary to increases lens and corrects aberration, is so just unfavorable for system compact and light-weighted requirement.
In described second lens 20, the focal distance f s3 of described 3rd optical surface E3 meets the following conditions:
|fs3|≥2F(3)
If described focal distance f s3 is too small, then can cause that described 20 types of second lens excessively bend, be unfavorable for aberration correction;In general with the first lens 10, type excessively curved lens thickness in face is relatively big, can cause that optical system thickness increases, be unfavorable for the requirement that VR wearable device is lightening simultaneously.
The focal distance f 1 of described first lens 10 meets condition:
|f1|≥3F(4)
If described focal distance f 1 too small (| f1 | < 3F), then can cause that the face type of described first lens 10 excessively bends, introduce aberration relatively big, cause that the aberration of whole system becomes big; Meanwhile, also can increase the thickness of described first lens 10, be unfavorable for the requirement that VR wearable device is lightening.
In order to reach the requirement of VR wearable device small size, superthin structure, the thickness of described short distance optical amplifier module is designed as 11mm～28mm, and the thickness of described short distance optical amplifier module is the ultimate range between short distance optical amplifier module both sides along optical axis direction.
Obtaining again good image quality while considering VR equipment wear comfort, the eye-distance that connects of described short distance optical amplifier module is designed as 5mm～10mm; Described connect eye-distance be observer can be clearly apparent whole visual field picture time eyeball and eyepiece (in the present invention, this eyepiece is the optical surface near human eye) between distance.
In order to obtain the dynamic scope of big eye, can obtain again good image quality simultaneously, the adjustable extent of aperture is designed as 2.2F～3.5F, and the bore D that the light beam namely participating in imaging through described first lens and described second lens passes through meets the following conditions:
0.28F≤D≤0.45F(5)
Corresponding with equation (5), the dynamic scope A of obtainable eye is 5mm～10mm.
Further, more favourable being provided that of numerical range of described conditional equality (1) and (2)
1.5F≤f2≤2F(1a)
1F≤fs4≤2F(2a)
Short distance optical amplifier module is provided to be described further the present embodiment below with reference to subordinate list.
In each example, in the specific design parameter list of described short distance optical amplifier module, OBJ represents the thing in optical system, IMA represents the picture in optical system, STO represents the diaphragm in optical system, thickness represents the spacing from i optical surface to i+1 optical surface, and i represents the order (i of the optical surface from thing side0)+1, the second lens 20 on the right side of the first lens 10 directive on the left of light, run into material (Glass) and be classified as MIRROR and namely reflect to walk toward rightabout, reflex to second MIRROR again reverse, then walk from left to right, be finally reached image planes.
Embodiment one
As in figure 2 it is shown, in described short distance optical amplifier module, design the first focal distance f 2 of described second lens 20 equal to system focal F, wherein,
Specific design parameter such as table one of described short distance optical amplifier module:
In Table 1, the first row OBJ represents the relevant design parameter of object plane; Second row STO represents the diaphragm in optical system, and described aperture is 7mm; The third line represents the diaphragm that the reflective polarizer in optics module and first phase retardation plate are formed, and the type of described diaphragm is STANDARD (index plane), material to be PMMA, diameter be 24.685mm, asphericity coefficient are 0; Fourth line represents the first optical surface E1 and second data corresponding for optical surface E2 of described first lens 10 respectively with fifth line, the radius of curvature of described first optical surface E1 is Infinity (plane), the radius of curvature of described second optical surface E2 is 888mm, and the thickness of described first lens 10 is 2mm (namely from the spacing the first optical surface E1 to described second optical surface E2, one-tenth-value thickness 1/10 fourth line data), material is H-ZF52A; 6th row and the 7th row represent the 3rd corresponding for optical surface E3 and the four optical surface E4 data of described second lens 20 respectively, the radius of curvature of described 3rd optical surface E3 be-55mm, described 4th optical surface E4 radius of curvature be-56mm, the thickness of described second lens 20 is 2mm (namely from the spacing the 3rd optical surface E3 to described 4th optical surface E4, one-tenth-value thickness 1/10 the 6th row data), material is H-QK1;8th walks to the tenth five elements represents light at described diaphragm, the reflection between the first lens 10 and the second lens 20 and the relevant parameter in transmission, and this is no longer going to repeat them; 16th row represents the glass-film in display screen liquid crystal layer, and the thickness of described glass-film is 0.4mm, material is BK7; 17th row IMA represents light and is ultimately imaged.
Other parameter such as table two that described short distance optical amplifier module is corresponding:
By table two it can be seen that by the relevant parameter design in table one, described first lens 10 focal length be-35.4F (-
1032.26mm), described second lens 20 first focal distance f 2 is F (29.16mm), simultaneously the half-transmitting and half-reflecting face effective focal length of described second lens 20 is F (29.16mm) and optical system thickness design 23.8mm, it is possible to obtain the angle of visual field of the system focal of 29.16mm and 90 °; By the aperture before being arranged on described short distance optical amplifier module is designed as 4, namely corresponding diaphragm diameter D is 7.29mm, just can obtain the dynamic scope of bigger eye of 7mm accordingly.
Design screen size is 2.22 inches simultaneously, to connect eye-distance be 9mm, in conjunction with from the MTF figure of Fig. 3, draw each visual field mean ordinate (modulation transfer function (MTF)) abscissa (every millimeter of spatial frequency) value higher than 0.18, and then show that the visual angle of described short distance optical amplifier module resolves power and can support the resolution of 800*800.
Further, the optical imagery aberration rate in the present embodiment controls in the scope of (-29.2%, 0) as can be drawn from Figure 4, and the curvature of field in Fig. 5 controls in (-10mm, 10mm) scope.
Embodiment two
As shown in Figure 6, in described short distance optical amplifier module, the focal length designing described first lens 10 is 10.4F, and the first focal distance f 2 of described second lens 20 is equal to system focal 1.5F, wherein,
Specific design parameter such as table three of described short distance optical amplifier module:
| Surf | Type | Radius of curvature | Thickness | Material | Minute surface radius | Asphericity coefficient |
| OBJ | STANDARD | Infinity | -200 | 476.7014 | 0 | |
| STO | STANDARD | Infinity | 9 | 9 | 0 | |
| 2 | STANDARD | Infinity | 4 | H-QK3L | 30.04656 | 0 |
| 3 | STANDARD | -134.133 | 5.996206 | 33.5536 | 0 | |
| 4 | STANDARD | Infinity | 4 | H-QK3L | 47.00138 | 0 |
| 5 | STANDARD | -99 | -4 | MIRROR | 48.08787 | 0 |
| 6 | EVENASPH | Infinity | -5.996206 | 48.07203 | 0 | |
| 7 | EVENASPH | -134.133 | -4 | H-QK3L | 47.88681 | 0 |
| 8 | STANDARD | Infinity | -0.2 | PMMA | 47.64044 | 0 |
| 9 | STANDARD | Infinity | 0 | MIRROR | 47.61382 | 0 |
| 10 | STANDARD | Infinity | 0.2 | PMMA | 47.61382 | 0 |
| 11 | STANDARD | Infinity | 4 | H-QK3L | 47.58719 | 0 |
| 12 | EVENASPH | -134.133 | 5.996206 | 47.33418 | 0 | |
| 13 | EVENASPH | Infinity | 4 | H-QK3L | 44.22057 | 0 |
| 14 | STANDARD | -99 | 0.6 | 43.82507 | 0 | |
| 15 | STANDARD | Infinity | 0.4 | BK7 | 41.91615 | 0 |
| IMA | STANDARD | Infinity | 41.9188 | 0 |
Other relevant parameters in the present embodiment explain the table one being referred in embodiment one, and this is no longer going to repeat them.
Other parameter such as table four that described short distance optical amplifier module is corresponding:
By table four it can be seen that by the relevant parameter design in table three, described first lens 10 focal length be 10.4F (
274.56mm), described second lens 20 first focal length is 1.5F (39.6mm), simultaneously the reflecting surface effective focal length in the half-transmitting and half-reflecting face of described second lens 20 is 1.88F (49.63mm) and optical system thickness design 15mm, it is possible to obtain the big angle of visual field of the system focal of 26.4mm and 100 °; By the aperture before being arranged on described short distance optical amplifier module is designed as 2.9, namely corresponding diaphragm diameter D is 9.1mm, just can obtain the dynamic scope of bigger eye of 9mm accordingly.
Design screen size is 2.3 inches simultaneously, to connect eye-distance be 9mm, in conjunction with in the MTF figure of Fig. 7, draw each visual field mean ordinate (modulation transfer function (MTF)) abscissa (every millimeter of spatial frequency) value higher than 0.18, and then show that the visual angle of described short distance optical amplifier module resolves power and can support the resolution of 2500*2500; Further, the optical imagery aberration rate in the present embodiment controls in the scope of (-33.4%, 0) as can be drawn from Figure 8, and the curvature of field in Fig. 9 controls in (-1mm, 1mm) scope.
Embodiment three
As shown in Figure 10, in described short distance optical amplifier module, the focal length designing described first lens 10 is 6.7F, and the first focal distance f 2 of described second lens 20 is equal to system focal 1.6F, wherein,
Specific design parameter such as table five of described short distance optical amplifier module:
In table five, the second row represents the paraxial design of PARAXIAL;Fourth line represents the relevant parameter design in the diaphragm of the reflective polarizer in optics module and the formation of first phase retardation plate; 6th row and the 7th row represent the relevant parameter design of described first lens 10, and the second optical surface E2 of wherein said first lens 10 is EVENASPH aspheric surface; 8th row and the 9th row represent the relevant parameter design of described first lens 20, and the 3rd optical surface E3 of wherein said first lens 20 is EVENASPH aspheric surface. Other relevant parameters in the present embodiment are explained and are referred to embodiment one, and this is no longer going to repeat them.
Refinement parameter such as table six of the optical surface in described short distance optical amplifier module:
In table six, the general surface of aspherical formula is;
Wherein: r be the point on lens to optical axis distance, c is the curvature on curved surface summit, and K is quadratic surface coefficient, d, e, f, g, h, I, and j is 4,6,8,10,12,14,16 surface coefficients respectively.
Corresponding coefficient value is substituted into the aspherical equation expression formula that x formula (6) is exactly each surface respectively.
Other parameter such as table seven that described short distance optical amplifier module is corresponding:
Be can be seen that by table seven, designed by the relevant parameter in table five and table six, described first lens 10 focal length is 6.7F (110.42mm), described second lens 20 first focal length is 1.6F (26.368mm), simultaneously the reflecting surface effective focal length of the half-transmitting and half-reflecting of described second lens 20 is 1.9F (94.297mm) and optical system thickness design 11.1mm, it is possible to obtain the big angle of visual field of the system focal of 16.48mm and 100 °; By the aperture before being arranged on described short distance optical amplifier module is designed as 2.1, namely corresponding diaphragm diameter D is 8mm, just can obtain the dynamic scope of bigger eye of 8mm accordingly.
Design screen size is 1.49 inches simultaneously, to connect eye-distance be 9mm, in conjunction with in the MTF figure of Figure 11, draw each visual field mean ordinate (modulation transfer function (MTF)) abscissa (every millimeter of spatial frequency) value higher than 0.18, and then show that the visual angle of described short distance optical amplifier module resolves power and can support the high-resolution of 2600*2600; Further, the optical imagery aberration rate in the present embodiment controls in the scope of (-32.8%, 0) as can be drawn from Figure 12, and the curvature of field in Figure 13 controls in (-0.5mm, 0.5mm) scope.
Embodiment four
As shown in figure 14, in described short distance optical amplifier module, the focal length designing described first lens 10 is 8.2F, designs the first focal distance f 2 of described second lens 20 equal to system focal 1.6F, wherein,
Specific design parameter such as table eight of described short distance optical amplifier module:
Table eight relevant parameter in the present embodiment is explained and is referred to embodiment one to embodiment three, and this is no longer going to repeat them.
Other parameter such as table nine that described short distance optical amplifier module is corresponding:
| Screen size C (inch) | 2.6 |
| Angle of visual field V (°) | 100 |
| System focal F (mm) | 29.5 |
| Semi-transparent partly penetrate face reflecting surface effective focal length fs4 | 2F |
| Eyebox eye moves scope A (mm) | 9 |
| Screen resolution | 4000*4000 |
| Optical system thickness (mm) | 16.2 |
| Eye relif connects eye-distance (mm) | 9 |
| F# aperture | 3.2 |
| Optics overall diameter (mm) | 52 |
| Systematical distortion D | 33 |
| Second lens the first focal distance f 2 | 1.6F |
| First focal length of lens f1 | 8.2F |
Be can be seen that by table nine, designed by the relevant parameter in table eight, described first lens 10 focal length is 8.5F (241.9mm), described second lens 20 first focal length is 1.6F (47.2mm), simultaneously the half-transmitting and half-reflecting face reflecting surface effective focal length of described second lens 20 is 2F (59mm) and optical system thickness design 16.5mm, it is possible to obtain the big angle of visual field of the system focal of 29.5mm and 100 °;By the aperture before being arranged on described short distance optical amplifier module is designed as 3.2, namely corresponding diaphragm diameter D is 9.2mm, just can obtain the dynamic scope of big eye of 9mm accordingly.
Design screen size is 2.6 inches simultaneously, to connect eye-distance be 9mm, in conjunction with in the MTF figure of Figure 15, draw each visual field mean ordinate (modulation transfer function (MTF)) abscissa (every millimeter of spatial frequency) value higher than 0.18, and then show that the visual angle of described short distance optical amplifier module resolves power and can support the high-resolution of 4000*4000; Further, the optical imagery aberration rate in the present embodiment controls in the scope of (-33%, 0) as can be drawn from Figure 16, and the curvature of field in Figure 17 controls in (-0.5mm, 0.5mm) scope.
Embodiment five
As shown in figure 18, in described short distance optical amplifier module, the focal length designing described first lens 10 is 3.8F, and the first focal distance f 2 of described second lens 20 is equal to system focal 2F, wherein,
Specific design parameter such as table ten of described short distance optical amplifier module:
Table ten relevant parameter in the present embodiment is explained and is referred to embodiment one to embodiment three, and this is no longer going to repeat them.
Refinement parameter such as table 11 of the optical surface in described short distance optical amplifier module:
Other parameter such as table 12 that described short distance optical amplifier module is corresponding::
| Screen size C (inch) | 1.66 |
| Angle of visual field V (°) | 100 |
| System focal F (mm) | 18 |
| Semi-transparent partly penetrate face reflecting surface effective focal length fs4 | 1.9F |
| Eyebox eye moves scope A (mm) | 8 |
| Screen resolution | 2000*2000 |
| Optical system thickness (mm) | 12.8 |
| Eye relif connects eye-distance (mm) | 9 |
| F# aperture | 2.3 |
| Optics overall diameter (mm) | 40 |
| Systematical distortion D | 32.5 |
| Second lens the first focal distance f 2 | 2F |
| First focal length of lens f1 | 3.8F |
Be can be seen that by table 12, designed by the relevant parameter in table ten and 11, described first lens 10 focal length is 3.8F (68.4mm), described second lens 20 first focal length is 2F (36mm), simultaneously the half-transmitting and half-reflecting reflecting surface effective focal length of described second lens 20 is 1.9F (34.2mm) and optical system thickness design 12.8mm, it is possible to obtain the big angle of visual field of the system focal of 18mm and 100 °; By the aperture before being arranged on described short distance optical amplifier module is designed as 2.3, namely corresponding diaphragm diameter D is 8mm, just can obtain the dynamic scope of big eye of 8mm accordingly.
Design screen size is 1.66 inches simultaneously, to connect eye-distance be 9mm, MTF in conjunction with Figure 19 schemes, draw each visual field mean ordinate (modulation transfer function (MTF)) abscissa (every millimeter of spatial frequency) value higher than 0.18, and then show that the visual angle of described short distance optical amplifier module resolves power and can support the resolution of 2000*2000, aberration rate in Figure 20 controls (-32.5%, 0) in scope, the curvature of field in Figure 21 controls in (-0.5mm, 0.5mm) scope.
Further, described semi-transparent face reflecting surface effective focal length of partly penetrating is not limited to be designed as 1.9F, it is also possible to be designed as 5F; Described optical system thickness and connect eye-distance and be also not limited to 12.8mm and 9mm, it is also possible to separately design as 28mm and 10mm.
Based on the short distance optical amplifier module that the present embodiment provides, present invention also offers a kind of glasses, including the short distance optical amplifier module in above-described embodiment, described glasses also include screen 30, described screen 30 and the described coaxial or non-coaxial setting of short distance optical amplifier module. Described screen 30 in Fig. 2, Fig. 6, Figure 10, Figure 14 and Figure 18 is coaxial with short distance optical amplifier module, but in use screen 30 and described short distance optical amplifier module can coaxially can not also be coaxial, can select voluntarily according to actual needs in being embodied as.
Based on the short distance optical amplifier module that the present embodiment provides, present invention also offers a kind of helmet, including the short distance optical amplifier module in above-described embodiment, described glasses also include screen 30, described screen 30 and the described coaxial or non-coaxial setting of short distance optical amplifier module. The described screen 30 described in screen 30 in Fig. 2, Fig. 6, Figure 10 and Figure 14 is coaxial with short distance optical amplifier module, convenient here for expressing, but in use screen 30 and short distance optical amplifier module can coaxially can not also be coaxial, select voluntarily according to actual needs.
Based on glasses provided by the invention and the helmet, present invention also offers a kind of VR system, including the glasses in above-described embodiment or the helmet, for the use of intelligence VR (VirtualReality, virtual reality) wearable device. Above-mentioned VR system adopts glasses or the helmet of short distance optical amplifier module composition, make it have the preferably angle of visual field, the dynamic scope of eye, high-quality imaging effect and small size superthin structure etc., good experience will be brought to user, the concrete embodiment that refer to short distance optical amplifier module, does not repeat them here.
It should be noted that, in this article, the such as relational terms of " first " and " second " or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially. And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment. When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
The above is only the specific embodiment of the present invention, makes to skilled artisans appreciate that or realize the present invention. The multiple amendment of these embodiments be will be apparent to one skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (13)
1. a short distance optical amplifier module, it is characterised in that include being arranged in order layout reflective polarizer, first phase retardation plate, the second lens and second phase retardation plate, wherein:
In described reflective polarizer, described first phase retardation plate, described second lens and described second phase retardation plate, the both sides any position of any one optical element is additionally provided with the first lens;
In described second lens, near the optical surface of described second phase retardation plate be half-transmitting and half-reflecting optical surface;
First focal distance f 2 of described second lens meets the following conditions: 1F≤f2≤2F, F is by the system focal of described short distance optical amplifier module.
2. short distance optical amplifier module according to claim 1, it is characterised in that the reflecting surface effective focal length fs4 of described half-transmitting and half-reflecting optical surface meets the following conditions: 1.5F≤fs4≤5F.
3. short distance optical amplifier module according to claim 2, it is characterised in that the reflecting surface effective focal length fs4 of described half-transmitting and half-reflecting optical surface meets the following conditions: 1F≤fs4≤2F.
4. short distance optical amplifier module according to claim 1, it is characterised in that the first focal distance f 2 of described second lens meets the following conditions: 1.5F≤f2≤2F.
5. short distance optical amplifier module according to claim 4, it is characterised in that the first focal distance f 2 of described second lens is 1.6F.
6. according to the arbitrary described short distance optical amplifier module of claim 1-5, it is characterised in that in described second lens, meet the following conditions near the optical surface focal distance f s3 of described first lens: | fs3 | >=2F.
7. according to the arbitrary described short distance optical amplifier module of claim 1-5, it is characterised in that the focal distance f 1 of described first lens meets the following conditions: | f1 | >=3F.
8. according to the arbitrary described short distance optical amplifier module of claim 1-5, it is characterised in that the thickness of described short distance optical amplifier module is 11mm～28mm.
9. according to the arbitrary described short distance optical amplifier module of claim 1-5, it is characterised in that the eye-distance that connects of described short distance optical amplifier module is 5mm～10mm.
10. according to the arbitrary described short distance optical amplifier module of claim 1-5, it is characterised in that the bore D that the light beam through described second lens and described first lens participation imaging passes through meets the following conditions: 0.28F≤D≤0.45F.
11. short distance optical amplifier glasses, it is characterised in that include the arbitrary described short distance optical amplifier module of claim 1-10, also include display screen, described display screen and the described coaxial or non-coaxial setting of short distance optical amplifier module.
12. a short distance optical amplifier helmet, it is characterised in that include the arbitrary described short distance optical amplifier module of claim 1-10, also include display screen, described display screen and the described coaxial or non-coaxial setting of short distance optical amplifier module.
13. a short distance optical amplifier VR system, it is characterised in that include the glasses described in claim 11 or the helmet described in claim 12.
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