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    OPTICAL DEVICE, PROJECTOR, AND METHOD OF PRODUCING OPTICAL DEVICE
    1.
    发明申请
    OPTICAL DEVICE, PROJECTOR, AND METHOD OF PRODUCING OPTICAL DEVICE 有权
    光学器件，投影仪和生产光学器件的方法

    公开(公告)号：US20150293271A1

    公开(公告)日：2015-10-15

    申请号：US14750770

    申请日：2015-06-25

    Applicant: ASAHI GLASS COMPANY, LIMITED

    Inventor： Koji MIYASAKA ,  Shuichi YAMASHITA

    IPC: G02B3/00 ,  G03B21/20 ,  G03B21/00

    CPC classification number: G02B5/0221 ,  G02B3/0037 ,  G02B5/02 ,  G02B5/0215 ,  G02B5/0226 ,  G02B5/0231 ,  G02B5/0268 ,  G02B5/0278 ,  G03B21/005 ,  G03B21/2033 ,  G03B21/204 ,  G03B21/208 ,  G03B33/06 ,  G03B33/12 ,  H04N9/3152

    Abstract: An optical device includes a base material including a surface on which multiple concaves are formed. The concaves include respective curved surfaces. The concaves are formed so that the bottoms of the concaves are at two or more different positions in a depth direction. In the optical device, 2/7≦|(n1−n2)×Δd|/λ≦10 holds, where n1 is the refractive index of the base material, n2 is the refractive index of a medium around the concaves, λ is the wavelength of a beam flux that enters the base material, and Δd is a range of the positions of the bottoms in the depth direction.

    Abstract translation: 光学装置包括基材，其包括其上形成有多个凹部的表面。 凹部包括相应的曲面。 凹部形成为使得凹部的底部在深度方向上处于两个以上的不同位置。 在光学器件中，2/7＆nlE; |（n1-n2）×＆Dgr; d | /λ＆nlE; 10成立，其中n1是基材的折射率，n2是凹陷周围的介质的折射率λ 是进入基材的光束通量的波长，＆Dgr; d是深度方向底部位置的范围。

    DIFFRACTION OPTICAL ELEMENT, PROJECTION DEVICE, AND MEASUREMENT DEVICE
    3.
    发明申请
    DIFFRACTION OPTICAL ELEMENT, PROJECTION DEVICE, AND MEASUREMENT DEVICE 有权
    衍射光学元件，投影设备和测量装置

    公开(公告)号：US20160178358A1

    公开(公告)日：2016-06-23

    申请号：US15057654

    申请日：2016-03-01

    Applicant: Asahi Glass Company, Limited

    Inventor： Koji MIYASAKA

    IPC: G01B11/25 ,  G02B27/42 ,  G02B27/30 ,  G02B27/10

    CPC classification number: G01B11/254 ,  G01B11/25 ,  G02B5/18 ,  G02B27/1086 ,  G02B27/30 ,  G02B27/4233

    Abstract: To make it possible to emit a light pattern with a uniform light quantity within a detection surface in spite of 0th-order diffracted light included therein or to emit a light pattern for overall irradiation with a uniform light quantity distribution, without limiting a degree of freedom for design of the emitted light pattern.In a diffraction optical element according to the invention, a divergence angle converting function that is a function of converting the divergence angle of incident light due to diffraction effect and a light beam splitting function that is a function of splitting an incident light beam into a plurality of light beams due to diffraction effect are combined so that incident light as divergent light is split into a plurality of diffracted lights with different divergence angles from the divergence angle of the incident light and the diffracted lights is emitted.

    Abstract translation: 为了使得可以在检测表面内发射具有均匀光量的光图案，尽管其中包含0级衍射光，或者以均匀的光量分布发射用于总体照射的光图案，而不限制自由度 用于设计发射光图案。 在根据本发明的衍射光学元件中，发散角转换函数是将由衍射效应引起的入射光的发散角转换为功能的发散角转换函数，以及作为将入射光束分解为多个的函数的光束分离函数 结合衍射效应的光束，使得作为发散光的入射光从入射光的发散角分离成具有不同发散角的多个衍射光，并且发射衍射光。

    LIGHT GUIDE ELEMENT AND IMAGE DISPLAY DEVICE
    5.
    发明申请
    LIGHT GUIDE ELEMENT AND IMAGE DISPLAY DEVICE 有权
    光指导元件和图像显示设备

    公开(公告)号：US20160349517A1

    公开(公告)日：2016-12-01

    申请号：US15234102

    申请日：2016-08-11

    Applicant: Asahi Glass Company, Limited

    Inventor： Koji MIYASAKA ,  Yukihiro TAO ,  Kosuke TAKAYAMA

    IPC: G02B27/01 ,  G02B5/30 ,  F21V8/00 ,  G02B27/42

    CPC classification number: G02B6/34 ,  G02B5/18 ,  G02B5/3016 ,  G02B6/00 ,  G02B6/0035 ,  G02B6/0036 ,  G02B6/124 ,  G02B6/29301 ,  G02B6/29304 ,  G02B27/0103 ,  G02B27/0172 ,  G02B27/4261 ,  G02B2027/0118 ,  G02B2027/0174

    Abstract: A light guide element includes a light-guiding substrate and a diffraction part formed on a surface of the light-guiding substrate. The diffraction part includes an optical layer capable of exerting a diffractive action. The distance from the light-guiding substrate to a surface of the optical layer is equal to or less than 10% of a thickness of the light-guiding substrate. The light guide element satisfies |ΔD|≦0.15 mm, where ΔD is an amount of a change in D with the temperature change ΔT, D [mm] is a distance, at the temperature T (° C.), between the center of the diffraction part and a position predetermined as a position where the ray of light comes out of the light-guiding substrate in a direction horizontal with respect to the light-guiding substrate, and ΔT is a temperature change.

    Abstract translation: 导光元件包括导光基板和形成在导光基板的表面上的衍射部分。 衍射部分包括能够发挥衍射作用的光学层。 从导光基板到光学层的表面的距离等于或小于导光基板的厚度的10％。 导光元件满足|ΔD|≤0.15mm，其中ΔD是温度变化ΔT的D变化量，D [mm]是在温度T（℃）下的温度T（℃）的距离， 所述衍射部分和预定为所述光线从所述导光基板在相对于所述导光基板的水平方向出射的位置的位置，ΔT为温度变化。

    DIFFRACTIVE OPTICAL ELEMENT AND MEASUREMENT DEVICE
    6.
    发明申请
    DIFFRACTIVE OPTICAL ELEMENT AND MEASUREMENT DEVICE 有权
    差分光学元件和测量装置

    公开(公告)号：US20130182327A1

    公开(公告)日：2013-07-18

    申请号：US13760831

    申请日：2013-02-06

    Applicant: ASAHI GLASS COMPANY, LIMITED

    Inventor： Koji MIYASAKA ,  Takuji NOMURA

    IPC: G02B5/18

    CPC classification number: G02B5/1861 ,  G01B11/25 ,  G02B5/18 ,  G02B5/1842 ,  G03H1/0244

    Abstract: Disclosed are a diffractive optical element and a measurement device that are capable of reliably suppressing occurrence of a zero-order diffracted light beam and generating light spots in a wide range. The diffractive optical element has concave and convex portions and diffracts incident light in two dimensions to generate diffracted light. When a maximum diffraction angle with reference to an optical axis of the incident light is an angle range θ, the angle range θ is 7.5° or greater, and diffraction efficiency in a zero-order diffracted light beam is 5% or less.

    Abstract translation: 公开了能够可靠地抑制零级衍射光束的发生并且在宽范围内产生光斑的衍射光学元件和测量装置。 衍射光学元件具有凹部和凸部，并且在二维衍射入射光以产生衍射光。 当相对于入射光的光轴的最大衍射角为角度范围θ时，角度范围θ为7.5°以上，零级衍射光束的衍射效率为5％以下。

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