WO2018010245A1 - 目镜 - Google Patents

目镜 Download PDF

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Publication number
WO2018010245A1
WO2018010245A1 PCT/CN2016/095333 CN2016095333W WO2018010245A1 WO 2018010245 A1 WO2018010245 A1 WO 2018010245A1 CN 2016095333 W CN2016095333 W CN 2016095333W WO 2018010245 A1 WO2018010245 A1 WO 2018010245A1
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WIPO (PCT)
Prior art keywords
lens
eyepiece
display
aspherical
display side
Prior art date
Application number
PCT/CN2016/095333
Other languages
English (en)
French (fr)
Inventor
戴付建
Original Assignee
浙江舜宇光学有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江舜宇光学有限公司 filed Critical 浙江舜宇光学有限公司
Priority to US15/550,619 priority Critical patent/US20180231741A1/en
Priority to JP2017541811A priority patent/JP6505239B2/ja
Publication of WO2018010245A1 publication Critical patent/WO2018010245A1/zh

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/60Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00Eyepieces; Magnifying glasses
    • G02B25/001Eyepieces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/017Head mounted
    • G02B27/0172Head mounted characterised by optical features
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only

Definitions

  • the present invention relates to optical imaging techniques, and more particularly to an eyepiece.
  • head-mounted displays require compact construction, light weight, and easy to wear, while requiring the field of view to be as large as possible to increase immersion.
  • the head-mounted display also needs to focus on the quality of the imaging and control various aberrations of the optical imaging system.
  • the eyepiece is the core of the head-mounted display, and therefore needs to have a large field of view and high image quality while having miniaturization characteristics.
  • current eyepiece angles of view are relatively small, or are not conducive to miniaturization, or image quality is affected.
  • Patent CN101887166B proposes an eyepiece system for a head-mounted display, the angle of view of the eyepiece system is less than 40 degrees, and it is difficult to achieve a large angle of view; and the size of the optical lens is large, which is disadvantageous for reducing the volume and failing to meet the head-mounted display.
  • the requirement for compact structure It is not easy to achieve compact structure, large field of view and high image quality at the same time.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention needs to provide an eyepiece.
  • the eyepiece according to the embodiment of the present invention includes a pupil coaxially disposed from the observation side to the display side, and a first lens, a second lens, a third lens, a fourth lens, and a fifth lens having a power;
  • the eyepiece satisfies the conditional expression:
  • EL is the on-axis distance of the pupil to the observation side surface of the first lens
  • f is the effective focal length of the eyepiece
  • HFOV is half of the maximum angle of view of the eyepiece
  • V3 is the The dispersion coefficient of the three lenses
  • V4 is the dispersion coefficient of the fourth lens.
  • the eyepiece satisfies the conditional expression:
  • f is the effective focal length of the eyepiece
  • f34 is the combined focal length of the third lens and the fourth lens.
  • the eyepiece satisfies the conditional expression:
  • f is the effective focal length of the eyepiece
  • f12 is the combined focal length of the first lens and the second lens.
  • the eyepiece satisfies the conditional expression:
  • CT3 is a center thickness of the third lens
  • CT4 is a center thickness of the fourth lens
  • Td is an on-axis distance from a viewing side surface of the first lens to a display side surface of the fifth lens .
  • the first lens has a positive power
  • the second lens has a negative power
  • the third lens has a positive power
  • the fourth lens has a negative power
  • the eyepiece satisfies the conditional expression:
  • f is the effective focal length of the eyepiece
  • f1 is the effective focal length of the first lens
  • the eyepiece satisfies the conditional expression:
  • V1 is a dispersion coefficient of the first lens.
  • the eyepiece includes a sixth lens disposed between the fifth lens and the display side, the viewing side surface of the third lens being a convex surface, and the display side of the fourth lens
  • the surface is a concave surface; the observation side surface of the sixth lens is a convex surface and the display side surface is a concave surface.
  • the eyepiece satisfies the conditional expression:
  • CT3 is a center thickness of the third lens
  • CT4 is a center thickness of the fourth lens
  • Td is an on-axis distance from a viewing side surface of the first lens to a display side surface of the sixth lens .
  • the third lens and the fourth lens are cemented lenses and are made of glass.
  • the eyepiece satisfies the conditional expression:
  • V2 is a dispersion coefficient of the second lens
  • V6 is a dispersion coefficient of the sixth lens
  • the eyepiece of the embodiment of the present invention has the advantages of miniaturization and wide angle, and can effectively correct aberrations in the full field of view and obtain a large relative mirror distance.
  • FIG. 1 is a schematic structural view of an eyepiece of Embodiment 1;
  • Figure 3 is a schematic structural view of an eyepiece of Embodiment 2;
  • Figure 5 is a schematic structural view of an eyepiece of Embodiment 3.
  • Figure 6 is a graph showing an MTF resolution of the eyepiece of Embodiment 3.
  • Figure 7 is a schematic structural view of an eyepiece of Embodiment 4.
  • Figure 8 is a graph showing an MTF resolution of the eyepiece of Embodiment 4.
  • Figure 9 is a schematic structural view of an eyepiece of Embodiment 5.
  • Figure 10 is a graph showing an MTF resolution of the eyepiece of Embodiment 5.
  • Figure 11 is a schematic structural view of an eyepiece of Embodiment 6;
  • Figure 12 is a graph showing an MTF resolution of the eyepiece of Embodiment 6;
  • Figure 13 is a schematic structural view of an eyepiece of Embodiment 7;
  • Figure 14 is a MTF resolution diagram of the eyepiece of Embodiment 7.
  • Figure 15 is a schematic structural view of an eyepiece of Embodiment 8.
  • Figure 16 is a graph showing an MTF resolution of the eyepiece of Embodiment 8.
  • Figure 17 is a schematic structural view of an eyepiece of Embodiment 9;
  • Figure 18 is a MTF resolution diagram of the eyepiece of Embodiment 9;
  • Figure 19 is a schematic structural view of an eyepiece of Embodiment 10.
  • Fig. 20 is a graph showing an MTF resolution of the eyepiece of the tenth embodiment.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include one or more of the described features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • Connected, or integrally connected may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • an eyepiece includes a pupil STO disposed coaxially from the observation side to the display side, and a first lens E1, a second lens E2, a third lens E3, and a fourth lens having power. E4 and fifth lens E5.
  • the first lens E1 has a viewing side surface S1 and a display side surface S2, and the second lens E2 has a viewing side surface S3.
  • the display side surface S4 having the observation side surface S5 and the display side surface S6, the fourth lens E4 having the observation side surface S6' and the display side surface S7, the fifth lens E5 having the observation side surface S8 and the display side surface S9.
  • the cover glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device displays an image, and the light of the image is emitted from the display surface S12 of the display device, and is projected on the human eye through the eyepiece to be perceived by the human eye. Therefore, in the embodiment of the present invention, the side of the eyepiece near the human eye is referred to as the observation side, and the side close to the display device is referred to as the display side.
  • the eyepiece may further include a sixth lens E6' disposed between the fifth lens E5 and the display side.
  • the first lens E1 has a viewing side surface S1 having a viewing side surface S3 and a display side surface S4, and a display side surface S2 having a viewing side surface S5 and a display side surface S6, and the fourth lens E4 has The side surface S6' and the display side surface S7 are observed.
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the sixth lens E6' has a viewing side surface S10' and a display side surface S11'.
  • the cover glass E7' has a viewing side surface S12' and a display side surface S13'.
  • the display device displays an image, and the light of the image is emitted from the display surface S14' of the display device, and is projected on the human eye through the eyepiece to be perceived by the human eye. Therefore, in the embodiment of the present invention, the side of the eyepiece near the human eye is referred to as the observation side, and the side close to the display device is referred to as the display side.
  • the eyepiece satisfies the conditional expression:
  • EL is the on-axis distance of the pupil STO to the observation side surface S1 of the first lens E1
  • f is the effective focal length of the eyepiece
  • HFOV is half of the maximum angle of view of the eyepiece
  • V3 is the dispersion coefficient of the third lens E3
  • V4 is the dispersion coefficient of the fourth lens E4.
  • Satisfying the above conditional expression can ensure a large relative mirror distance while realizing a large angle of view, and at the same time, it is advantageous to reduce chromatic aberration, thereby ensuring high definition.
  • the eyepiece satisfies the conditional expression:
  • f is the effective focal length of the eyepiece
  • f34 is the combined focal length of the third lens E3 and the fourth lens E4.
  • the eyepiece satisfies the conditional expression:
  • f is the effective focal length of the eyepiece
  • f12 is the combined focal length of the first lens E1 and the second lens E2.
  • the eyepiece satisfies the conditional expression:
  • Satisfying the above conditional expression helps to reduce the total length of the eyepiece, thereby ensuring that the eyepiece has a smaller size while Take into account the relative mirror distance.
  • the first lens E1 has positive power
  • the second lens E2 has negative power
  • the third lens E3 has positive power
  • the fourth lens E4 has negative power
  • the eyepiece satisfies the conditional expression:
  • f is the effective focal length of the eyepiece
  • f1 is the effective focal length of the first lens E1.
  • the eyepiece satisfies the conditional expression:
  • V1 is the dispersion coefficient of the first lens E1.
  • the observation side surface S5 of the third lens E3 is a convex surface
  • the display side surface S7 of the fourth lens E4 is a concave surface
  • the observation side surface S10' of the sixth lens E6' is a convex surface to display the side surface S11. 'is concave.
  • CT3 is the center thickness of the third lens E3;
  • CT4 is the center thickness of the fourth lens E4;
  • Td is the on-axis distance of the display side surface S11' of the observation side surface S1 to the sixth lens E6' of the first lens E1 .
  • Satisfying the above conditional expression is advantageous in reducing the total length of the eyepiece, thereby ensuring that the eyepiece has a small size while taking into account the relative mirror distance.
  • the third lens E3 and the fourth lens E4 are cemented lenses and are made of glass.
  • the glass lens has better imaging effect than the plastic lens, and the cemented lens can effectively compensate the chromatic aberration generated by other lenses, thereby minimizing system chromatic aberration and improving definition.
  • V2 is the dispersion coefficient of the second lens E2
  • V6 is the dispersion coefficient of the sixth lens E6'.
  • the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6' are all aspherical lenses.
  • the aspherical shape is determined by the following formula:
  • h is the height from any point on the aspheric surface to the optical axis
  • c is the curvature of the vertex
  • k is the cone constant
  • Ai is non- The correction factor for the i-th order of the sphere.
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 the fourth lens E4 has a viewing side surface S6' and a display side surface S7
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the protective glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device has a display surface S12.
  • the third lens E3 and the fourth lens E4 are cemented lenses. Therefore, the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 the fourth lens E4 has a viewing side surface S6' and a display side surface S7
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the protective glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device has a display surface S12.
  • the third lens E3 and the fourth lens E4 are cemented lenses. Therefore, the third through The display side surface S6 of the mirror E3 coincides with the observation side surface S6' of the fourth lens E4.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 the fourth lens E4 has a viewing side surface S6' and a display side surface S7
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the protective glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device has a display surface S12.
  • the first lens E1 and the second lens E2 are cemented lenses
  • the third lens E3 and the fourth lens E4 are cemented lenses.
  • the display side surface S2 of the first lens E1 and the observation side surface S3 of the second lens E2 coincide, and the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 the fourth lens E4 has a viewing side surface S6' and a display side surface S7
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the protective glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device has a display surface S12.
  • the first lens E1 and the second lens E2 are cemented lenses. Therefore, the display side surface S2 of the first lens E1 and the observation side surface S3 of the second lens E2 coincide.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 the fourth lens E4 has a viewing side surface S6' and a display side surface S7
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the protective glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device has a display surface S12.
  • the third lens E3 and the fourth lens E4 are cemented lenses. Therefore, the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 the fourth lens E4 has a viewing side surface S6' and a display side surface S7
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the protective glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device has a display surface S12.
  • the third lens E3 and the fourth lens E4 are cemented lenses. Therefore, the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 the fourth lens E4 has a viewing side surface S6' and a display side surface S7
  • the fifth lens E5 has a viewing side surface S8 and a display side surface S9
  • the protective glass E6 has a viewing side surface S10 and a display side surface S11.
  • the display device has a display surface S12.
  • the third lens E3 and the fourth lens E4 are cemented lenses. Therefore, the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4. Eyepieces satisfy the following table Pieces:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 fourth lens E4 has observation side surface S6' and display side surface S7
  • fifth lens E5 has observation side surface S8 and display side surface S9
  • sixth lens E6' has observation side surface S10'
  • the display side surface S11' has a viewing side surface S12' and a display side surface S13'
  • the display device has a display surface S14'.
  • the third lens E3 and the fourth lens E4 are cemented lenses. Therefore, the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • S5 and display side surface S6 fourth lens E4 has observation side surface S6' and display side surface S7
  • fifth lens E5 has observation side surface S8 and display side surface S9
  • sixth lens E6' has observation side surface S10'
  • the display side surface S11' has a viewing side surface S12' and a display side surface S13'
  • the display device has a display surface S14'.
  • the third lens E3 and the fourth lens E4 are cemented lenses. Therefore, the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4.
  • the eyepiece satisfies the conditions of the following table:
  • the first lens E1 has a viewing side surface S1 and a display side surface S2
  • the second lens E2 has a viewing side surface S3 and a display side surface S4
  • the third lens E3 has a viewing side surface.
  • fourth lens E4 has observation side surface S6' and display side surface S7
  • fifth lens E5 has observation side surface S8 and display side surface S9
  • sixth lens E6' has observation side surface S10'
  • the display side surface S11' has a viewing side surface S12' and a display side surface S13'
  • the display device has a display surface S14'.
  • the third lens E3 and the fourth lens E4 are cemented lenses, and the fifth lens E5 and the sixth lens E6' are cemented lenses. Therefore, the display side surface S6 of the third lens E3 coincides with the observation side surface S6' of the fourth lens E4, and the display side surface S9 of the fifth lens E5 and the observation side surface S10' of the sixth lens E6' coincide.
  • the eyepiece satisfies the conditions of the following table:
  • each conditional expression satisfies the conditions of the following table:
  • the optical power and the dispersion coefficient of each lens of the eyepiece according to the embodiment of the present invention are properly allocated, and various aberrations are effectively controlled, thereby ensuring the premise of maintaining a small size. Underneath, with an ultra-wide angle of view, effectively corrects aberrations in the full field of view and obtains a larger relative mirror distance.

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  • Optics & Photonics (AREA)
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Abstract

一种目镜,其包括自观察侧到显示侧依次共轴设置的光阑(STO)及具有光焦度的第一透镜(E1)、第二透镜(E2)、第三透镜(E3)、第四透镜(E4)及第五透镜(E5)。所述目镜满足条件式:0.75≤EL/f≤1.0;15<|V3-V4|<32;HFOV≥30°。其中,EL为所述光阑(STO)至所述第一透镜(E1)的观察侧表面(S1)的轴上距离,f为所述目镜的有效焦距,HFOV为所述目镜的最大视场角的一半,V3为所述第三透镜(E3)的色散系数,V4为所述第四透镜(E4)的色散系数。所述目镜能在保持较小尺寸的前提下,具有大视场角,有效矫正全视场内的像差,并获得较大的相对镜目距。

Description

目镜
优先权信息
本申请请求2016年7月14日向中国国家知识产权局提交的、专利申请号为201610561743.5的专利申请的优先权和权益,并且通过参照将其全文并入此处。
技术领域
本发明涉及光学成像技术,特别涉及一种目镜。
背景技术
近年来,虚拟现实和增强现实技术进入高速发展阶段,对应的头戴显示器也成为显示领域的热门产品。头戴显示器要求结构紧凑、重量轻,便于头戴,同时要求视场角要尽可能大,以此增加沉浸感。此外,头戴显示器还需重点考虑成像的质量,控制光学成像系统的各类像差。目镜作为光学成像系统是头戴显示器的核心,也因此需要在具有小型化特点的同时具有较大的视场角及高成像质量。然而,目前的目镜视场角都比较小、或者不利于小型化、又或者成像质量受到影响。
专利CN101887166B提出了一种用于头戴显示器的目镜系统,该目镜系统视场角小于40度,难以实现大视场角;且光学透镜的尺寸较大,不利于缩小体积,无法满足头戴显示器结构紧凑化的要求。若要同时实现结构紧凑化、大视场角和高成像质量并不容易。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此,本发明需要提供一种目镜。
本发明实施方式的目镜包括自观察侧到显示侧依次共轴设置的光阑及具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜及第五透镜;
所述目镜满足条件式:
0.75≤EL/f≤1.0;
15<|V3-V4|<32;
HFOV≥30°;
其中,EL为所述光阑至所述第一透镜的观察侧表面的轴上距离,f为所述目镜的有效焦距,HFOV为所述目镜的最大视场角的一半,V3为所述第三透镜的色散系数,V4为所述第四透镜的色散系数。
在某些实施方式中,所述目镜满足条件式:
|f/f34|≤0.75;
其中,f为所述目镜的有效焦距;f34为所述第三透镜和所述第四透镜的组合焦距。
在某些实施方式中,所述目镜满足条件式:
0<f/f12<1.3;
其中,f为所述目镜的有效焦距;f12为所述第一透镜和所述第二透镜的组合焦距。
在某些实施方式中,所述目镜满足条件式:
0.35≤(CT3+CT4)/Td≤0.55;
其中,CT3为所述第三透镜的中心厚度;CT4为所述第四透镜的中心厚度;Td为所述第一透镜的观察侧表面至所述第五透镜的的显示侧表面的轴上距离。
在某些实施方式中,所述第一透镜具有正光焦度,所述第二透镜具有负光焦度,所述第三透镜具有正光焦度,所述第四透镜具有负光焦度。
在某些实施方式中,所述目镜满足条件式:
0.9<f/f1<1.5;
其中,f为所述目镜的有效焦距;f1为所述第一透镜的有效焦距。
在某些实施方式中,所述目镜满足条件式:
40<V1<60;
其中,V1为所述第一透镜的色散系数。
在某些实施方式中,所述目镜包括设置在所述第五透镜及所述显示侧之间的第六透镜,所述第三透镜的观察侧表面为凸面,所述第四透镜的显示侧表面为凹面;所述第六透镜的观察侧表面为凸面而显示侧表面为凹面。
在某些实施方式中,所述目镜满足条件式:
0.35≤(CT3+CT4)/Td≤0.55;
其中,CT3为所述第三透镜的中心厚度;CT4为所述第四透镜的中心厚度;Td为所述第一透镜的观察侧表面至所述第六透镜的的显示侧表面的轴上距离。
在某些实施方式中,所述第三透镜和所述第四透镜为胶合透镜,且材质为玻璃。
在某些实施方式中,所述目镜满足条件式:
2.0<V2/V6<3.0;
其中,V2为所述第二透镜的色散系数,V6为所述第六透镜的色散系数。
本发明实施方式的目镜具有小型化、广角化的优点,能有效矫正全视场内的像差,并获得较大的相对镜目距。
本发明的附加方面和优点将在下面的描述中部分给出,部分将从下面的描述中变得明显,或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解,其中:
图1是实施例1的目镜的结构示意图;
图2是实施例1的目镜的MTF解像曲线图;
图3是实施例2的目镜的结构示意图;
图4是实施例2的目镜的MTF解像曲线图;
图5是实施例3的目镜的结构示意图;
图6是实施例3的目镜的MTF解像曲线图;
图7是实施例4的目镜的结构示意图;
图8是实施例4的目镜的MTF解像曲线图;
图9是实施例5的目镜的结构示意图;
图10是实施例5的目镜的MTF解像曲线图;
图11是实施例6的目镜的结构示意图;
图12是实施例6的目镜的MTF解像曲线图;
图13是实施例7的目镜的结构示意图;
图14是实施例7的目镜的MTF解像曲线图;
图15是实施例8的目镜的结构示意图;
图16是实施例8的目镜的MTF解像曲线图;
图17是实施例9的目镜的结构示意图;
图18是实施例9的目镜的MTF解像曲线图;
图19是实施例10的目镜的结构示意图;
图20是实施例10的目镜的MTF解像曲线图。
具体实施方式
下面详细描述本发明的实施方式,所述实施方式的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的,仅用于解释本发明,而不能理解为对本发明的限制。
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的 方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中,“多个”的含义是两个或两个以上,除非另有明确具体的限定。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接或可以相互通讯;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开,下文中对特定例子的部件和设置进行描述。当然,它们仅仅为示例,并且目的不在于限制本发明。此外,本发明可以在不同例子中重复参考数字和/或参考字母,这种重复是为了简化和清楚的目的,其本身不指示所讨论各种实施方式和/或设置之间的关系。此外,本发明提供了的各种特定的工艺和材料的例子,但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参阅图1,本发明实施方式的目镜包括自观察侧到显示侧依次共轴设置的光阑STO及具有光焦度的第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4及第五透镜E5。
请一并参阅图3、5、7、9、11、13,本发明实施例1-7中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9。另外,保护玻璃E6具有观察侧表面S10及显示侧表面S11。
使用时,显示器件显示图像,图像的光线自显示器件的显示表面S12发出,并经过目镜后投射在人眼上,以为人眼感知。因此,在本发明实施方式中,目镜靠近人眼的一侧称为观察侧,而靠近显示器件的一侧称为显示侧。
请参阅图15、17、19,本发明实施例8-10中,目镜还可以包括设置在第五透镜E5及显示侧之间的第六透镜E6′。第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,第六透镜E6′具有观察侧表面S10′及显示侧表面S11′。另外,保护玻璃E7′具有观察侧表面S12′及显示侧表面S13′。
使用时,显示器件显示图像,图像的光线自显示器件的显示表面S14′发出,并经过目镜后投射在人眼上,以为人眼感知。因此,在本发明实施方式中,目镜靠近人眼的一侧称为观察侧,而靠近显示器件的一侧称为显示侧。
在实施例1-10中,目镜满足条件式:
0.75≤EL/f≤1.0;
15<|V3-V4|<32;
HFOV≥30°;
其中,EL为光阑STO至第一透镜E1的观察侧表面S1的轴上距离,f为目镜的有效焦距,HFOV为目镜的最大视场角的一半,V3为第三透镜E3的色散系数,V4为第四透镜E4的色散系数。
满足上面的条件式可以在实现大视场角的同时保证较大的相对镜目距,同时有利于减小色差,从而保证高清晰度。
在实施例1-10中,目镜满足条件式:
|f/f34|≤0.75;
其中,f为目镜的有效焦距;f34为第三透镜E3和第四透镜E4的组合焦距。
满足上面的条件式使得目镜的光焦度可以得到合理的分配,从而有效改善色差,提高清晰度。
在实施例1-10中,目镜满足条件式:
0<f/f12<1.3;
其中,f为目镜的有效焦距;f12为第一透镜E1和第二透镜E2的组合焦距。
满足上面的条件式使得目镜的光焦度可以得到合理的分配,从而有效地扩大入瞳距离。
在实施例1-7中,目镜满足条件式:
0.35≤(CT3+CT4)/Td≤0.55;
其中,CT3为第三透镜E3的中心厚度;CT4为第四透镜E4的中心厚度;Td为第一透镜E1的观察侧表面S1至第五透镜E5的的显示侧表面S9的轴上距离。
满足上面的条件式有利于减小目镜的总长度,从而保证目镜具有较小的尺寸,同时 兼顾相对镜目距。
在实施例1-7中,第一透镜E1具有正光焦度,第二透镜E2具有负光焦度,第三透镜E3具有正光焦度,第四透镜E4具有负光焦度。
在实施例1-7中,目镜满足条件式:
0.9<f/f1<1.5;
其中,f为目镜的有效焦距;f1为第一透镜E1的有效焦距。
满足上面的条件式使得目镜的光焦度可以得到合理的分配,从而提升解像力,同时使得各透镜在光轴上具有合适的中心厚度,从而减小目镜的尺寸。
在实施例1-7中,目镜满足条件式:
40<V1<60;
其中,V1为第一透镜E1的色散系数。
满足上面的条件式使得色散程度得到控制,从而消除色差,提升清晰度。
在实施例8-10中,第三透镜E3的观察侧表面S5为凸面,第四透镜E4的显示侧表面S7为凹面;第六透镜E6′的观察侧表面S10′为凸面而显示侧表面S11′为凹面。
在实施例8-10中,目镜满足条件式:
0.35≤(CT3+CT4)/Td≤0.55;
其中,CT3为第三透镜E3的中心厚度;CT4为第四透镜E4的中心厚度;Td为第一透镜E1的观察侧表面S1至第六透镜E6′的的显示侧表面S11′的轴上距离。
满足上面的条件式有利于减小目镜的总长度,从而保证目镜具有较小的尺寸,同时兼顾相对镜目距。
在实施例8-10中,第三透镜E3和第四透镜E4为胶合透镜,且材质为玻璃。
玻璃透镜相较于塑料透镜具有较好的成像效果,且胶合透镜可以有效补偿其他透镜产生的色差,从而最大限度地减少系统色差,提高清晰度。
在实施例8-10中,目镜满足条件式:
2.0<V2/V6<3.0;
其中,V2为第二透镜E2的色散系数,V6为第六透镜E6′的色散系数。
满足上面的条件式通过对第二透镜E2和第六透镜E6′的色散系数的合理分配,可以有效减小外部视场垂轴色差,从而实现较大视场角范围内的高清晰度。
在实施例1-10中,第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5及第六透镜E6′都为非球面透镜。非球面的面型由以下公式决定:
Figure PCTCN2016095333-appb-000001
其中,h是非球面上任一点到光轴的高度,c是顶点曲率,k是锥形常数,Ai是非 球面第i-th阶的修正系数。
实施例1
请参阅图1-2,实施例1中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,保护玻璃E6具有观察侧表面S10及显示侧表面S11,显示器件具有显示表面S12。其中,第三透镜E3和第四透镜E4为胶合透镜。因此,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条件:
表1
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 14.2000    
S1 非球面 55.5429 6.2500 1.76,49.3 -95.4462
S2 非球面 -12.8000 0.1000   -2.1514
S3 非球面 -29.5329 0.9100 1.54,56.1 -2.8180
S4 非球面 -45.5380 0.1000   -61.5412
S5 非球面 25.5186 8.2800 1.85,40.6 1.0385
S6 球面 -26.5181 1.6600 1.92,20.9 0
S7 球面 13.9750 2.6695   0
S8 非球面 -24.4451 0.9100 1.64,23.5 -3.0349
S9 非球面 50.4736 1.4132   10.6901
S10 球面 无穷 0.7000 1.52,64.2  
S11 球面 无穷 1.4000    
S12 球面 无穷      
表2
面号 A4 A6 A8 A10 A12
S1 -9.5191E-05 2.6291E-07 5.8617E-09 -4.0223E-11 1.7682E-14
S2 -1.0596E-04 -1.6297E-07 4.4982E-09 2.1566E-11 -1.4706E-13
S3 6.3517E-05 -1.8173E-06 1.3491E-08 -2.6910E-11 1.5201E-14
S4 -7.6380E-06 3.0985E-07 -3.2893E-09 -2.8921E-11 1.7554E-13
S5 2.6477E-05 1.3762E-07 -1.5089E-10 -2.3913E-12 -1.0206E-14
S8 3.5340E-04 2.3348E-06 -9.0933E-09 -4.2208E-10 2.5545E-12
S9 2.2350E-04 -4.0901E-06 -1.4797E-08 5.3017E-10 -1.1752E-12
实施例2
请参阅图3-4,实施例2中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,保护玻璃E6具有观察侧表面S10及显示侧表面S11,显示器件具有显示表面S12。其中,第三透镜E3和第四透镜E4为胶合透镜。因此,第三透 镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条件:
表3
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 14.2000    
S1 非球面 95.0858 5.9525 1.73,54.0 10.3062
S2 非球面 -11.4181 0.1045   -2.8065
S3 非球面 -26.7017 1.0452 1.54,56.1 -6.4734
S4 非球面 -65.0571 0.1039   -237.3327
S5 非球面 22.1773 8.2523 1.85,40.1 0.1332
S6 球面 -38.0818 2.0124 1.92,20.9 0
S7 球面 13.2210 3.1435   0
S8 非球面 -38.0191 1.2009 1.64,23.5 13.2577
S9 非球面 29.0705 0.6309   2.5005
S10 球面 无穷 0.7000 1.52,64.2  
S11 球面 无穷 1.6500    
S12 球面 无穷      
表4
面号 A4 A6 A8 A10 A12
S1 -9.7056E-05 1.5601E-07 5.4646E-09 -3.8855E-11 1.1335E-13
S2 -8.3236E-05 -1.5408E-07 2.8410E-09 8.7172E-12 1.1778E-14
S3 7.3415E-05 -1.8426E-06 1.3484E-08 -2.4528E-11 -1.7377E-14
S4 -9.6939E-05 2.5203E-07 -2.8491E-10 -3.5251E-13 -6.9844E-15
S5 1.0924E-05 4.5765E-08 4.0835E-10 8.7171E-13 -8.8628E-15
S8 2.3266E-04 1.5204E-06 1.4835E-08 3.2758E-11 -3.2711E-12
S9 -7.2049E-05 -9.4180E-07 -1.0298E-08 2.8671E-11 1.0364E-12
实施例3
请参阅图5-6,实施例3中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,保护玻璃E6具有观察侧表面S10及显示侧表面S11,显示器件具有显示表面S12。其中,第一透镜E1和第二透镜E2为胶合透镜,第三透镜E3和第四透镜E4为胶合透镜。因此,第一透镜E1的显示侧表面S2和第二透镜E2的观察侧表面S3重合,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条件:
表5
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 15.0000    
S1 球面 39.5756 7.2152 1.77,49.6 0
S2 球面 -16.3746 1.0000 1.85,23.8 0
S4 球面 -27.3564 0.1000   0
S5 球面 14.0872 6.4469 1.80,46.6 0
S6 球面 69.5777 1.1729 1.85,23.8 0
S7 球面 10.2552 2.0406   0
S8 非球面 11.1804 1.9788 1.54,56.1 0.2610
S9 非球面 18.0466 3.0000   1.1498
S10 球面 无穷 0.7000 1.52,64.2  
S11 球面 无穷 1.1270    
S12 球面 无穷      
表6
Figure PCTCN2016095333-appb-000002
实施例4
请参阅图7-8,实施例4中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,保护玻璃E6具有观察侧表面S10及显示侧表面S11,显示器件具有显示表面S12。其中,第一透镜E1和第二透镜E2为胶合透镜。因此,第一透镜E1的显示侧表面S2和第二透镜E2的观察侧表面S3重合。目镜满足下面表格的条件:
表7
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 15.0000    
S1 球面 199.2053 7.2231 1.80,46.6 0
S2 球面 -13.1258 1.0000 1.81,25.5 0
S4 球面 -23.2274 0.0999   0
S5 球面 15.1338 6.7475 1.76,52.3 0
S6 球面 59.1906 1.0552   0
S6′ 非球面 -307.9896 2.5159 1.65,21.5 -96.4351
S7 非球面 9.1329 1.8318   -0.0063
S8 非球面 6.7782 2.1696 1.54,56.1 -0.4710
S9 非球面 14.0429 2.8733   -6.8718
S10 球面 无穷 0.7000 1.52,64.2  
S11 球面 无穷 0.5260    
S12 球面 无穷      
表8
Figure PCTCN2016095333-appb-000003
Figure PCTCN2016095333-appb-000004
实施例5
请参阅图9-10,实施例5中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,保护玻璃E6具有观察侧表面S10及显示侧表面S11,显示器件具有显示表面S12。其中,第三透镜E3和第四透镜E4为胶合透镜。因此,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条件:
表9
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 13.7000    
S1 非球面 53.0551 5.8500 1.76,49.3 -99.9900
S2 非球面 -13.3000 0.1000   -1.8199
S3 非球面 -34.1539 1.0000 1.54,56.1 -4.0557
S4 非球面 -50.1853 0.1000   -99.9900
S5 非球面 24.8140 7.5000 1.85,40.6 0.6700
S6 球面 -29.0500 1.6600 1.92,20.9 0
S7 球面 14.6000 3.3354   0
S8 非球面 -14.1557 1.0300 1.64,23.5 -1.8900
S9 非球面 无穷 0.8253   50.0000
S10 球面 无穷 0.7000 1.52,64.2  
S11 球面 无穷 1.6500    
S12 球面 无穷      
表10
面号 A4 A6 A8 A10 A12
S1 -1.0323E-04 2.4308E-07 6.2307E-09 -3.6293E-11 -2.5375E-15
S2 -1.1460E-04 -1.7367E-07 5.2321E-09 3.0648E-11 -1.7166E-13
S3 7.9209E-05 -1.8299E-06 1.3661E-08 -2.7936E-11 1.5405E-14
S4 9.6550E-06 3.5050E-07 -3.9655E-09 -3.8655E-11 2.3479E-13
S5 2.2316E-05 9.2651E-08 -1.4599E-10 2.4678E-12 -3.1529E-14
S8 4.1583E-04 4.6264E-06 -2.0227E-07 2.6518E-09 -1.1068E-11
S9 -9.2023E-05 2.6283E-05 -1.0081E-06 1.2698E-08 -5.0205E-11
实施例6
请参阅图11-12,实施例6中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,保护玻璃E6具有观察侧表面S10及显示侧表面S11,显示器件具有显示表面S12。其中,第三透镜E3和第四透镜E4为胶合透镜。因此,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条件:
表11
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 14.2000    
S1 非球面 77.4513 6.1545 1.77,49.3 -32.9845
S2 非球面 -11.0087 0.1000   -2.6480
S3 非球面 -20.9569 0.9000 1.54,56.1 -4.5603
S4 非球面 -49.0117 0.1000   -97.0821
S5 非球面 23.6144 8.2398 1.85,40.1 0.1897
S6 球面 -30.1258 1.6600 1.92,20.9 0
S7 球面 13.5474 2.4848   0
S8 非球面 -54.8154 0.9507 1.64,23.5 18.1891
S9 非球面 23.9467 1.8884   2.9066
S10 球面 无穷 0.7000 1.52,64.2  
S11 球面 无穷 1.1000    
S12 球面 无穷      
表12
面号 A4 A6 A8 A10 A12
S1 -9.7099E-05 1.5936E-07 5.4999E-09 -3.8793E-11 1.0816E-13
S2 -8.6479E-05 -1.3274E-07 2.9858E-09 7.7345E-12 2.1848E-14
S3 7.2938E-05 -1.8012E-06 1.4004E-08 -2.2885E-11 -3.0182E-14
S4 -8.2033E-05 2.6114E-07 -7.2271E-10 -3.8795E-12 1.7452E-14
S5 8.9008E-06 6.5000E-08 6.6057E-10 1.8694E-12 -2.4737E-14
S8 3.5084E-04 2.2067E-07 2.3542E-09 1.3026E-11 -1.6903E-12
S9 -1.5526E-05 -1.2686E-06 -1.1629E-08 7.2107E-11 8.6603E-13
实施例7
请参阅图13-14,实施例7中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,保护玻璃E6具有观察侧表面S10及显示侧表面S11,显示器件具有显示表面S12。其中,第三透镜E3和第四透镜E4为胶合透镜。因此,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条 件:
表13
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 14.2000    
S1 非球面 55.5429 6.2500 1.76,49.3 -95.4462
S2 非球面 -12.8000 0.1000   -2.1514
S3 非球面 -29.5329 0.9100 1.54,56.1 -2.8180
S4 非球面 -45.5380 0.1000   -61.5412
S5 非球面 25.5186 8.2800 1.85,40.6 1.0385
S6 球面 -26.5181 1.6600 1.92,20.9 0
S7 球面 13.9750 2.6695   0
S8 非球面 -24.4451 0.9100 1.64,23.5 -3.0349
S9 非球面 50.4736 1.4132   10.6901
S10 球面 无穷 0.7000 1.52,64.2  
S11 球面 无穷 1.4000    
S12 球面 无穷      
表14
面号 A4 A6 A8 A10 A12
S1 -9.5191E-05 2.6291E-07 5.8617E-09 -4.0223E-11 1.7682E-14
S2 -1.0596E-04 -1.6297E-07 4.4982E-09 2.1566E-11 -1.4706E-13
S3 6.3517E-05 -1.8173E-06 1.3491E-08 -2.6910E-11 1.5201E-14
S4 -7.6380E-06 3.0985E-07 -3.2893E-09 -2.8921E-11 1.7554E-13
S5 2.6477E-05 1.3762E-07 -1.5089E-10 -2.3913E-12 -1.0206E-14
S8 3.5340E-04 2.3348E-06 -9.0933E-09 -4.2208E-10 2.5545E-12
S9 2.2350E-04 -4.0901E-06 -1.4797E-08 5.3017E-10 -1.1752E-12
实施例8
请参阅图15-16,实施例8中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,第六透镜E6′具有观察侧表面S10′及显示侧表面S11′,保护玻璃E7′具有观察侧表面S12′及显示侧表面S13′,显示器件具有显示表面S14′。其中,第三透镜E3和第四透镜E4为胶合透镜。因此,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条件:
表15
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 15.0000    
S1 非球面 -811.3168 1.5087 1.54,56.1 0
S2 非球面 13.9880 0.0984   -10.2727
S3 非球面 6.0984 3.9446 1.54,56.1 -2.7324
S4 非球面 16.3615 0.1003   -2.8342
S5 球面 16.1358 9.3393 1.82,46.6 0
S6 球面 -34.9774 1.3103 1.85,23.8 0
S7 球面 12.6241 0.8248   0
S8 非球面 5.0319 3.6835 1.54,56.1 -2.0384
S9 非球面 -148.2893 0.1098   50.2479
S10′ 非球面 188.5409 0.5499 1.66,21.5 0
S11′ 非球面 8.6679 2.0441   -0.9184
S12′ 球面 无穷 0.7000 1.52,64.2  
S13′ 球面 无穷 0.9869    
S14′ 球面 无穷      
表16
面号 A4 A6 A8 A10 A12
S1 4.1452E-04 -7.3538E-06 6.8518E-08 -3.2484E-10 6.6085E-13
S2 -1.5650E-04 -9.1355E-07 7.9872E-09 4.5983E-12 -3.4718E-14
S3 2.7069E-05 -7.1389E-07 4.7644E-10 8.9035E-14 -2.9269E-14
S4 -6.8897E-05 1.6469E-07 -2.5400E-09 -1.4016E-12 -1.1627E-14
S8 1.2081E-04 -8.2112E-06 -2.9035E-09 -2.9455E-10 6.7687E-12
S9 2.6749E-06 2.7082E-07 3.2173E-09 4.3959E-11 0
S10′ -2.8227E-05 3.1234E-08 4.9017E-10 -9.5711E-15 0
S11′ -5.4639E-04 3.3964E-06 -2.8469E-08 7.0233E-11 0
实施例9
请参阅图17-18,实施例9中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,第六透镜E6′具有观察侧表面S10′及显示侧表面S11′,保护玻璃E7′具有观察侧表面S12′及显示侧表面S13′,显示器件具有显示表面S14′。其中,第三透镜E3和第四透镜E4为胶合透镜。因此,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合。目镜满足下面表格的条件:
表17
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 14.1030    
S1 非球面 -470.1866 3.2083 1.80,45.4 28.9284
S2 非球面 -48.8182 0.1000   6.2778
S3 非球面 19.1669 2.6350 1.54,56.1 -4.0225
S4 非球面 -40.1493 0.1000   -66.4909
S5 球面 27.7225 1.0004 1.92,20.9 0
S6 球面 12.2395 8.1721 1.88,40.8 0
S7 球面 352.0194 0.1099   0
S8 非球面 -269.5796 1.1348 1.64,23.5 50.0000
S9 非球面 7.5843 0.2363   -0.3795
S10′ 非球面 7.5705 2.4249 1.64,23.5 -0.5794
S11′ 非球面 11.2094 3.7650   -2.2398
S12′ 球面 无穷 0.7000 1.52,64.2  
S13′ 球面 无穷 0.9000    
S14′ 球面 无穷      
表18
Figure PCTCN2016095333-appb-000005
实施例10
请参阅图19-20,实施例10中,第一透镜E1具有观察侧表面S1及显示侧表面S2,第二透镜E2具有观察侧表面S3及显示侧表面S4,第三透镜E3具有观察侧表面S5及显示侧表面S6,第四透镜E4具有观察侧表面S6′及显示侧表面S7,第五透镜E5具有观察侧表面S8及显示侧表面S9,第六透镜E6′具有观察侧表面S10′及显示侧表面S11′,保护玻璃E7′具有观察侧表面S12′及显示侧表面S13′,显示器件具有显示表面S14′。其中,第三透镜E3和第四透镜E4为胶合透镜,第五透镜E5和第六透镜E6′为胶合透镜。因此,第三透镜E3的显示侧表面S6与第四透镜E4的观察侧表面S6′重合,第五透镜E5的显示侧表面S9和第六透镜E6′的观察侧表面S10′重合。目镜满足下面表格的条件:
表19
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
STO 球面 无穷 14.5985    
S1 非球面 29.4006 4.0110 1.80,45.4 -55.3906
S2 非球面 -16.5543 0.1000   -4.9697
S3 非球面 -77.0423 0.7995 1.54,56.1 -63.4447
S4 非球面 17.0290 0.1000   -19.8958
S5 球面 15.7493 8.8672 1.92,20.9 0
S6 球面 -34.8975 1.2157 1.88,40.8 0
S7 球面 11.7465 0.6297   0
S8 非球面 4.4799 2.3010 1.64,23.5 -1.8993
S9 非球面 5.6825 0.9429 1.64,23.5 -1.6098
S11′ 非球面 5.1569 2.6434   -1.2696
S12′ 球面 无穷 0.7000 1.52,64.2  
S13′ 球面 无穷 1.0060    
S14′ 球面 无穷      
表20
面号 A4 A6 A8 A10 A12
S1 -1.2027E-04 -1.7842E-06 3.7404E-08 -2.2842E-10 5.3124E-13
S2 -1.3196E-04 -3.7477E-07 5.7259E-09 1.5341E-11 -3.6432E-14
S3 4.7094E-05 -4.3122E-07 1.5860E-09 8.4162E-15 -6.3687E-16
S4 -1.7287E-04 3.9919E-07 -7.9331E-10 -8.2672E-14 -4.9851E-16
S8 3.0917E-04 -1.0292E-05 -1.1711E-07 1.4257E-09 1.0179E-13
S9 -1.7055E-03 1.9110E-05 4.5485E-08 -8.9997E-10 -6.5890E-13
S11′ -7.5779E-04 -7.3333E-06 1.9600E-07 -1.0447E-09 -1.9849E-13
在实施例1-10中,各条件式满足下面表格的条件:
Figure PCTCN2016095333-appb-000006
如上述表格及图1-20所示,本发明实施方式的目镜的各个透镜的光焦度和色散系数都得到合理分配,各种像差得到有效控制,从而保证了在保持较小尺寸的前提下,具有超广视场角,有效矫正全视场内的像差,并获得较大的相对镜目距。
在本说明书的描述中,参考术语“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施方式或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施方式,本领域的普通技术人员可以理解:在不脱离本发明的原理和宗旨的情况下可以对这些实施方式进行多种变化、修改、替换和变型,本发明的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种目镜,其特征在于,所述目镜包括自观察侧到显示侧依次共轴设置的光阑及具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜及第五透镜;
    所述目镜满足条件式:
    0.75≤EL/f≤1.0;
    15<|V3-V4|<32;
    HFOV≥30°;
    其中,EL为所述光阑至所述第一透镜的观察侧表面的轴上距离,f为所述目镜的有效焦距,HFOV为所述目镜的最大视场角的一半,V3为所述第三透镜的色散系数,V4为所述第四透镜的色散系数。
  2. 如权利要求1所述的目镜,其特征在于,所述目镜满足条件式:|f/f34|≦0.75;
    其中,f为所述目镜的有效焦距;f34为所述第三透镜和所述第四透镜的组合焦距。
  3. 如权利要求1所述的目镜,其特征在于,所述目镜满足条件式:0<f/f12<1.3;
    其中,f为所述目镜的有效焦距;f12为所述第一透镜和所述第二透镜的组合焦距。
  4. 如权利要求1所述的目镜,其特征在于,所述目镜满足条件式:0.35≤(CT3+CT4)/Td≤0.55;
    其中,CT3为所述第三透镜的中心厚度;CT4为所述第四透镜的中心厚度;Td为所述第一透镜的观察侧表面至所述第五透镜的的显示侧表面的轴上距离。
  5. 如权利要求1所述的目镜,其特征在于,所述第一透镜具有正光焦度,所述第二透镜具有负光焦度,所述第三透镜具有正光焦度,所述第四透镜具有负光焦度。
  6. 如权利要求5所述的目镜,其特征在于,所述目镜满足条件式:0.9<f/f1<1.5;
    其中,f为所述目镜的有效焦距;f1为所述第一透镜的有效焦距。
  7. 如权利要求5所述的目镜,其特征在于,所述目镜满足条件式:40<V1<60;
    其中,V1为所述第一透镜的色散系数。
  8. 如权利要求1所述的目镜,其特征在于,所述目镜包括设置在所述第五透镜及所 述显示侧之间的第六透镜,所述第三透镜的观察侧表面为凸面,所述第四透镜的显示侧表面为凹面;所述第六透镜的观察侧表面为凸面而显示侧表面为凹面。
  9. 如权利要求8所述的目镜,其特征在于,所述目镜满足条件式:0.35≤(CT3+CT4)/Td≤0.55;
    其中,CT3为所述第三透镜的中心厚度;CT4为所述第四透镜的中心厚度;Td为所述第一透镜的观察侧表面至所述第六透镜的的显示侧表面的轴上距离。
  10. 如权利要求8所述的目镜,其特征在于,所述第三透镜和所述第四透镜为胶合透镜,且材质为玻璃。
  11. 如权利要求8所述的目镜,其特征在于,所述目镜满足条件式:2.0<V2/V6<3.0;
    其中,V2为所述第二透镜的色散系数,V6为所述第六透镜的色散系数。
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