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1. 发明授权

US08649095B2 Diffraction grating lens and method of producing the same, and imaging device in which the same is used 有权
$Diffraction grating lens and method of producing the same, and imaging device in which the same is used$
标题翻译：衍射光栅透镜及其制造方法以及使用其的成像装置
公开(公告)号：US08649095B2
公开(公告)日：2014-02-11
申请号：US13143928
申请日：2010-12-28
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B27/44 , G02B3/08
CPC分类号： G02B5/1895 , G02B13/0055
摘要： A diffraction grating lens according to the present invention includes a lens body and a diffraction grating provided on the surface of the lens body, the diffraction grating including a plurality of annular zones having slopes inclined along a width direction and a plurality of step surfaces respectively located between the plurality of annular zones. At least one of the plurality of annular zones is light-transmissive across its entire area along the width direction, and in the at least one annular zone, a light transmittance near at least one of two ends along the width direction is smaller than a light transmittance near a central portion along the width direction.
摘要翻译：根据本发明的衍射光栅透镜包括透镜体和设置在透镜体的表面上的衍射光栅，衍射光栅包括多个具有沿宽度方向倾斜的斜面的环形区域和分别位于多个台阶表面的多个台阶表面在多个环形区域之间。多个环形区域中的至少一个沿着宽度方向穿过其整个区域是透光的，并且在至少一个环形区域中，沿着宽度方向的两端中的至少一端附近的透光率小于光沿着宽度方向的中心部附近的透射率。

2. 发明授权

US08441728B2 Diffractive lens and image pickup device using the same 有权
$Diffractive lens and image pickup device using the same$
标题翻译：衍射透镜和使用其的图像拾取装置
公开(公告)号：US08441728B2
公开(公告)日：2013-05-14
申请号：US13000430
申请日：2009-12-18
申请人： Tsuguhiro Korenaga , Takamasa Ando
发明人： Tsuguhiro Korenaga , Takamasa Ando
IPC分类号： G02B5/18
CPC分类号： G02B13/003 , G02B5/1814 , G02B13/06 , G02B27/4211
摘要： A diffractive lens 11 that includes: a lens base 18, which has a second surface 13 with first and second groups of diffraction grating portions 20 and 21; and a protective coating 17, which is arranged on the first group of diffraction grating portions 20. The first group of diffraction grating portions 20 has a first group of diffraction steps and the second group of diffraction grating portions 21 has a second group of diffraction steps, which is lower in height than the first group of diffraction steps. One of the respective materials of the base 18 and the protective coating 17 has a higher refractive index and a greater Abbe number than the other material. And the second group of diffraction steps is not covered with the protective coating 17.
摘要翻译：衍射透镜11，其包括：透镜基部18，其具有带有第一和第二组衍射光栅部分20和21的第二表面13; 以及设置在第一组衍射光栅部分20上的保护涂层17.第一组衍射光栅部分20具有第一组衍射级，第二组衍射光栅部分21具有第二组衍射级，其高度比第一组衍射级高。基部18和保护涂层17的各个材料之一具有比其他材料更高的折射率和更大的阿贝数。第二组衍射步骤未被保护涂层17覆盖。

3. 发明授权

US08284388B2 Method for measuring optical characteristics of diffraction optical element and apparatus for measuring optical characteristics of diffraction optical element 有权
$Method for measuring optical characteristics of diffraction optical element and apparatus for measuring optical characteristics of diffraction optical element$
标题翻译：用于测量衍射光学元件的光学特性的方法和用于测量衍射光学元件的光学特性的装置
公开(公告)号：US08284388B2
公开(公告)日：2012-10-09
申请号：US13308097
申请日：2011-11-30
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G01B9/00
CPC分类号： G01M11/0228 , G02B5/189
摘要： A measurement method and an evaluating apparatus are provided which accurately evaluate the light amount of a spot beam, the diffraction efficiency, and the intensity distribution in the optical axis direction by detecting even a weak diffracted beam in an arbitrary wavelength range converged by a diffraction optical element as an imaging lens. Light emitted from a white light source passes through a wavelength band-pass filter and is diaphragmed by a pinhole slit. The resultant light is paralleled by a collimator lens and enters a diffraction optical element as an imaging lens. The light getting out from the diffraction optical element is converged to be a spot beam, is magnified by a microscope 18, and is then projected on a CCD. A distance changing member changes the distance between the CCD and the diffraction optical element, and then, the intensity distribution in the optical axis direction is measured.
摘要翻译：提供一种测量方法和评估装置，通过检测由衍射光学会聚的任意波长范围内的弱衍射光束，可以精确地评估光束的光量，衍射效率和光轴方向的强度分布元素作为成像透镜。从白色光源发射的光通过波长带通滤光器，并被针孔狭缝隔开。所得到的光由准直透镜并联，并且作为成像透镜进入衍射光学元件。从衍射光学元件出射的光会聚成点光束，用显微镜18放大，然后投射到CCD上。距离改变构件改变CCD与衍射光学元件之间的距离，然后测量光轴方向上的强度分布。

4. 发明申请

US20100110547A1 IMAGING DEVICE, AND DIFFRACTION GRATING LENS FOR USE IN THE DEVICE 有权
标题翻译：成像装置和用于设备的衍射光泽镜片
公开(公告)号：US20100110547A1
公开(公告)日：2010-05-06
申请号：US12524040
申请日：2008-01-21
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B27/44 , G02B13/18
CPC分类号： G02B5/1895 , G02B27/0037 , G02B27/4211 , G02B27/4216
摘要： In a refraction lens having an aspheric shape formed thereon and having a positive power, a diffraction grating is formed on at least one of the faces of the refraction lens. In order to reduce the curvature of field and the chromatic aberration in a well-balanced manner, the zonal pitch of the diffraction grating is constituted so as to satisfy the following conditional expression. [ eq .  19 ] 0.21   m 2  v d  λ  f h max
摘要翻译：在其上形成有正功率的非球面形状的折射透镜中，在折射透镜的至少一个面上形成衍射光栅。为了以良好平衡的方式减小曲率和色差，衍射光栅的纬向间距构成为满足以下条件表达式。 [eq。（19）这里，Λmin是最小区域间距12; m是衍射的顺序; ＆ngr; d是相对于d线的透镜基板材料的阿贝数; λ是波长; f是有效的焦距; 并且hmax是形成衍射光栅的面的有效半径13。

5. 发明申请

US20090180186A1 DIFFRACTIVE OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SAME 有权
标题翻译：衍射光学元件及其制造方法
公开(公告)号：US20090180186A1
公开(公告)日：2009-07-16
申请号：US12295525
申请日：2007-04-05
申请人： Takamasa Ando , Tsuguhiro Korenaga , Masa-aki Suzuki , Yuka Okada
发明人： Takamasa Ando , Tsuguhiro Korenaga , Masa-aki Suzuki , Yuka Okada
IPC分类号： G02B5/18 , G02B1/00 , B05D5/06
CPC分类号： G02B1/14 , B29C39/025 , B29C39/026 , B29L2011/00 , G02B1/105 , G02B1/111 , G02B5/18 , G02B5/1847
摘要： A diffractive optical element that can maintain transparency and be molded easily, and a method for manufacturing the same are provided.A diffractive optical element (10) includes a substrate (11), a protective film (13a, 13b), and a diffraction grating (12a, 12b) disposed between the substrate (11) and the protective film (13a, 13b), wherein the diffraction grating (12a, 12b) is formed of a composite material containing a resin and inorganic particles, a volume ratio of the inorganic particles with respect to the composite material is equal to or smaller than 50% by volume, and the diffraction grating (12a, 12b) has a thickness of equal to or smaller than 20 μm. Since the diffractive optical element (10) uses the composite material containing the resin and the inorganic particles as a material for the diffraction grating (12a, 12b), which is relatively difficult to process, the moldability improves compared with the conventional case of using glass, etc.
摘要翻译：可以容易地保持透明性和模制性的衍射光学元件及其制造方法。衍射光学元件（10）包括基板（11），保护膜（13a，13b）和设置在基板（11）和保护膜（13a，13b）之间的衍射光栅（12a，12b），其中衍射光栅（12a，12b）由包含树脂和无机颗粒的复合材料形成，无机颗粒相对于复合材料的体积比等于或小于50体积％，衍射光栅 12a，12b）具有等于或小于20μm的厚度。由于衍射光学元件（10）使用包含树脂和无机颗粒的复合材料作为相对难以处理的衍射光栅（12a，12b）的材料，与使用玻璃的常规情况相比，成型性提高等等

6. 发明授权

US08902514B2 Diffractive lens 有权
$Diffractive lens$
标题翻译：衍射透镜
公开(公告)号：US08902514B2
公开(公告)日：2014-12-02
申请号：US13378386
申请日：2011-04-28
申请人： Seiji Nishiwaki , Takamasa Ando , Tsuguhiro Korenaga
发明人： Seiji Nishiwaki , Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B3/08 , G02B5/18
CPC分类号： G02B5/1876
摘要： A diffractive lens according to the present invention has the function of focusing light. The diffractive lens has a side on which a diffraction grating is arranged on either an aspheric surface or a spherical surface in its effective area. The diffraction grating has n0 phase steps, which are arranged concentrically around the optical axis of the diffractive lens. And the radius rn of the circle formed by an nth one (where n is an integer that falls within the range of 0 through n0) of the phase steps as counted from the optical axis of the diffractive lens satisfies rn=√{square root over (a{(n+c+dn)−b(n+c+dn)m})}{square root over (a{(n+c+dn)−b(n+c+dn)m})} where a, b, c and m are constants that satisfy a>0, 0≦c 1, and 0.05 ⁢ b 0
摘要翻译：根据本发明的衍射透镜具有聚焦光的功能。衍射透镜在其有效区域中具有在非球面或球面上布置衍射光栅的一侧。衍射光栅具有相对于衍射透镜的光轴同心设置的n0个相位。并且由衍射透镜的光轴计数的由第n个（其中n是落入0到n0的范围内的整数）形成的圆的半径rn满足rn =√{平方根超过（a {（n + c + dn）-b（n + c + dn）m}）} {（n + c + dn）-b（n + c + dn）其中a，b，c和m是满足> 0,0和nlE; c <1，m> 1和0.05b 0

7. 发明授权

US08390799B2 Method for measuring optical characteristics of diffraction optical element and apparatus for measuring optical characteristics of diffraction optical element 有权
$Method for measuring optical characteristics of diffraction optical element and apparatus for measuring optical characteristics of diffraction optical element$
标题翻译：用于测量衍射光学元件的光学特性的方法和用于测量衍射光学元件的光学特性的装置
公开(公告)号：US08390799B2
公开(公告)日：2013-03-05
申请号：US13308080
申请日：2011-11-30
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G01B9/00
CPC分类号： G01M11/0228 , G02B5/189
摘要： A measurement method and an evaluating apparatus are provided which are capable of easily and accurately evaluating the light amount of a spot beam, the diffraction efficiency, and the intensity distribution in the optical axis direction by detecting even a weak diffracted beam in an arbitrary wavelength range converged by a diffraction optical element as an imaging lens.
摘要翻译：提供一种测量方法和评估装置，其能够通过检测偶数的任意波长范围内的弱衍射光束来容易且准确地评估光束的光量，衍射效率和光轴方向上的强度分布由衍射光学元件会聚为成像透镜。

8. 发明申请

US20120075704A1 DIFFRACTION OPTICAL ELEMENT 审中-公开
标题翻译：衍射光学元件
公开(公告)号：US20120075704A1
公开(公告)日：2012-03-29
申请号：US13376369
申请日：2010-06-04
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B5/18
CPC分类号： G02B5/1814 , G02B13/146 , G02B27/0018
摘要： An imaging optical system according to the present invention includes a lens that has first and second surfaces and that has a diffraction grating on only one of the first and second surfaces. If the diameter of an effective area, which is defined by a light ray that has entered the lens with a maximum angle of view, is D when measured on the surface with the diffraction grating, an F number of the imaging optical system at the maximum angle of view is Fno, a d-line Abbe number of the lens is νd, and an F number of an axial bundle of rays is F, then the average diffracting ring zone pitch of the effective area satisfies 0.008 ≤ Λ D × Fno ≤ 0.00031 · vd · F
摘要翻译：根据本发明的成像光学系统包括具有第一表面和第二表面并且仅在第一表面和第二表面中的一个上具有衍射光栅的透镜。如果在具有衍射光栅的表面上测量由进入具有最大视角的透镜的光线限定的有效面积的直径为D，则成像光学系统的F数最大视角为Fno，透镜的d线数为阿贝数，光轴的F数为F，则有效面积的平均衍射环带间距为0.008≤ΛD× Fno≤0.00031·vd·F

9. 发明授权

US08089620B2 Method for measuring optical characteristics of diffraction optical element and apparatus for measuring optical characteristics of diffraction optical element 有权
$Method for measuring optical characteristics of diffraction optical element and apparatus for measuring optical characteristics of diffraction optical element$
标题翻译：用于测量衍射光学元件的光学特性的方法和用于测量衍射光学元件的光学特性的装置
公开(公告)号：US08089620B2
公开(公告)日：2012-01-03
申请号：US12442674
申请日：2007-12-13
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G01B9/00
CPC分类号： G01M11/0228 , G02B5/189
摘要： A measurement method and an evaluating apparatus are provided which are capable of easily and accurately evaluating the light amount of a spot beam, the diffraction efficiency, and the intensity distribution in the optical axis direction by detecting even a weak diffracted beam in an arbitrary wavelength range converged by a diffraction optical element as an imaging lens.
摘要翻译：提供一种测量方法和评估装置，其能够通过检测偶数的任意波长范围内的弱衍射光束来容易且准确地评估光束的光量，衍射效率和光轴方向上的强度分布由衍射光学元件会聚为成像透镜。

10. 发明申请

US20100085559A1 METHOD FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT AND APPARATUS FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT 有权
标题翻译：用于测量衍射光学元件的光学特性的方法和用于测量衍射光学元件的光学特性的装置
公开(公告)号：US20100085559A1
公开(公告)日：2010-04-08
申请号：US12442674
申请日：2007-12-13
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G01B9/00
CPC分类号： G01M11/0228 , G02B5/189
摘要： [Object] A measurement method and an evaluating apparatus are provided which are capable of easily and accurately evaluating the light amount of a spot beam, the diffraction efficiency, and the intensity distribution in the optical axis direction by detecting even a weak diffracted beam in an arbitrary wavelength range converged by a diffraction optical element as an imaging lens.[Means for Attaining the Object] Light emitted from a white light source 11 passes through a wavelength band-pass filter 12 and is diaphragmed by a pinhole slit 13. The resultant light is paralleled by a collimator lens 14 and enters a diffraction optical element 16 as an imaging lens. The light getting out from the diffraction optical element 16 is converged to be a spot beam 17, is magnified by a microscope 18, and is then projected on a CCD 19. A distance changing member 56 changes the distance between the CCD 19 and the diffraction optical element 16, and then, the intensity distribution in the optical axis direction is measured. In-plane intensity distribution perpendicular to the optical axis is also measured.
摘要翻译：本发明提供一种测量方法和评估装置，其能够通过检测即使是弱衍射光束也能够容易且准确地评估光束的光量，衍射效率和光轴方向上的强度分布作为成像透镜的衍射光学元件会聚的任意波长范围。 [用于获得对象的手段]从白色光源11发射的光通过波长带通滤光器12，并被针孔狭缝13隔开。所得到的光与准直透镜14并联并进入衍射光学元件16 作为成像透镜。从衍射光学元件16出射的光会聚成点光束17，由显微镜18放大，然后投射在CCD 19上。距离改变构件56改变CCD 19与衍射之间的距离光学元件16，然后测量光轴方向上的强度分布。还测量垂直于光轴的面内强度分布。

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