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21. 发明授权

US09103981B2 Method for designing and method for manufacturing diffraction-grating lens 有权
$Method for designing and method for manufacturing diffraction-grating lens$
标题翻译：衍射光栅透镜的制造方法和制造方法
公开(公告)号：US09103981B2
公开(公告)日：2015-08-11
申请号：US13818160
申请日：2011-12-09
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B5/18 , G02B13/18 , G02B13/00 , G02B3/04
CPC分类号： G02B5/1847 , G02B3/04 , G02B5/1814 , G02B13/00 , G02B13/003 , G02B13/18 , Y10T29/49 , Y10T29/49764 , Y10T29/49767 , Y10T29/49771
摘要： A method for designing a diffraction grating lens of the present invention is a method for designing a diffraction grating lens having a diffraction grating composed of a plurality of diffraction zones, the method including the steps of: (a) determining widths of the plurality of diffraction zones; and (b) determining an aspherical coefficient of a diffraction surface on which the diffraction grating is provided while the determined widths of the plurality of diffraction zones are fixed, after the step (a).
摘要翻译：本发明的衍射光栅透镜的设计方法是具有由多个衍射区构成的衍射光栅的衍射光栅透镜的设计方法，该方法包括以下步骤：（a）确定多个衍射的宽度区域以及（b）在步骤（a）之后，确定在确定的多个衍射区域的宽度被固定的情况下，设置衍射光栅的衍射面的非球面系数。

22. 发明授权

US08384996B2 Double image pickup optical system and image pickup apparatus provided therewith 有权
标题翻译：双摄像光学系统和与其一起提供的图像拾取装置
公开(公告)号：US08384996B2
公开(公告)日：2013-02-26
申请号：US12997955
申请日：2009-06-12
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B5/18 , G02B27/44
CPC分类号： G02B13/04 , G02B5/1895 , G02B13/003 , G02B13/0055 , G02B13/18 , G02B27/0037 , G02B27/4211
摘要： According to the present invention, a small-sized double-lens imaging optical system whose chromatic aberration is corrected even at a super wide angle of 150° or more can be provided. The double-lens imaging optical system of the present invention includes a concave lens, and a convex lens having a diffraction grating provided thereon, and satisfies the following conditional expression (1): 4.5
摘要翻译：根据本发明，可以提供即使在150°以上的超广角下也能够校正色像差的小型双透镜成像光学系统。本发明的双透镜成像光学系统包括凹透镜和设置有衍射光栅的凸透镜，满足以下条件式（1）：4.5

23. 发明授权

US08346010B2 Image processing device, imaging device, evaluation device, image processing method, and optical system evaluation method 有权
标题翻译：图像处理装置，成像装置，评价装置，图像处理方法以及光学系统评价方法
公开(公告)号：US08346010B2
公开(公告)日：2013-01-01
申请号：US12742732
申请日：2009-09-11
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G06K9/40 , H04N5/228
CPC分类号： H04N5/3572 , G06T5/009 , G06T5/40 , H04N1/4074
摘要： An image processing device that can highly precisely correct an image with a degraded image quality due to the unnecessary diffracted light generated in the optical system including the diffractive optical element is provided. The image processing device includes an evaluation area setting unit (111) which detects a saturated pixel having a saturated luminance value, from among pixels included in the image and to set an area in the image including the detected saturated pixel as an evaluation area, a pixel count calculating unit (112) which calculates a pixel count for each of luminance values of pixels included in the set evaluation area, a first luminance value determining unit (113) which determines a first luminance value indicating a maximum luminance of an image of the unnecessary diffracted light, based on a transition of calculated pixel counts arranged in order of luminance value, a second luminance value determining unit (114) which determines a second luminance value which is a luminance value corresponding to a background of the image, and a correction unit (116) which corrects a luminance value of a pixel of luminance lower than luminance of the first luminance value and higher than luminance of the second luminance value from among the pixels included in the evaluation area so as to lower the luminance of the pixel.
摘要翻译：提供了一种图像处理装置，其能够由于在包括衍射光学元件的光学系统中产生的不必要的衍射光而高精度地校正具有劣化图像质量的图像。该图像处理装置包括评估区域设定单元，其从包括在图像中的像素中检测具有饱和亮度值的饱和像素，并且将包括检测到的饱和像素的图像中的区域设置为评估区域，像素数计算单元（112），其计算包括在所述设定评估区域中的像素的每个亮度值的像素数，第一亮度值确定单元（113），其确定表示所述设置评估区域中的图像的最大亮度的第一亮度值基于以亮度顺序排列的计算出的像素数的转移的不需要的衍射光，确定作为与图像的背景相对应的亮度值的第二亮度值的第二亮度值确定单元（114）单元（116），其校正比第一亮度值的亮度低的亮度的像素的亮度值，并且高于亮度的亮度包括在评估区域中的像素中的第二亮度值，以便降低像素的亮度。

24. 发明申请

US20120008210A1 DIFFRACTIVE LENS AND IMAGE CAPTURE DEVICE USING THE SAME 审中-公开
标题翻译：使用相同的DIFFRACTIVE LENS和图像捕获设备
公开(公告)号：US20120008210A1
公开(公告)日：2012-01-12
申请号：US13257376
申请日：2011-02-23
申请人： Tsuguhiro Korenaga , Takamasa Ando
发明人： Tsuguhiro Korenaga , Takamasa Ando
IPC分类号： G02B5/18
CPC分类号： G02B5/1895 , G02B13/003 , G02B13/04 , G02B13/18 , G02B27/4211
摘要： The present invention reduces the angle dependence of diffraction efficiency by taking the diffraction pitch and diffraction step of an optical element with a diffraction grating such as a lens into account. Specifically, for that purpose, an optical element that has a first group of diffraction grating portions 20 around an optical axis 10 is covered with a protective coating 14, and a second group of diffraction grating portions 21 are arranged on the surface of the protective coating 14 far away from the optical axis 10.
摘要翻译：本发明考虑到衍射光栅的衍射间距和衍射级别等衍射光栅，从而降低衍射效率的角度依赖性。具体地说，为了这个目的，在光轴10周围具有第一组衍射光栅部分20的光学元件被保护涂层14覆盖，并且第二组衍射光栅部分21被布置在保护涂层的表面上 14远离光轴10。

25. 发明授权

US08995058B2 Diffraction grating lens and imaging device in which the same is used 有权
$Diffraction grating lens and imaging device in which the same is used$
标题翻译：衍射光栅透镜和其中使用相同的成像装置
公开(公告)号：US08995058B2
公开(公告)日：2015-03-31
申请号：US13395585
申请日：2011-08-12
申请人： Yuka Okada , Takamasa Ando , Tsuguhiro Korenaga
发明人： Yuka Okada , Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B5/18 , G02B3/08 , G02B13/18 , G02B27/42
CPC分类号： G02B5/1814 , G02B5/1871 , G02B5/1895 , G02B13/18 , G02B27/4211 , G02B27/4216 , G02B27/4277
摘要： A diffraction grating lens according to the present invention is a diffraction grating lens 11 including: a lens body 12; and a plurality of diffraction steps relative to a base shape and a plurality of diffraction gratings 13 interposed between the diffraction steps, provided on a surface of the lens body 12. The lens body 12 is made of a first material having a refractive index n1(λ) at a used wavelength λ; the diffraction grating 13 is in contact with air; and the relationship of an inequality below is satisfied, where d is a design step length of the diffraction steps, and m is an order of diffraction. Each of the plurality of annular zones includes an intermediate portion and a pair of end portions sandwiching the intermediate portion along a radial direction, and in at least one of the plurality of annular zones, either one of a recess 18 and a protrusion 19 is provided in at least a portion of one of the pair of end portions, and the other one of the recess 18 and the protrusion 19 is provided in at least a portion of the other of the pair of end portions. Between two kinds of diffraction steps 17A and 17B of the diffraction grating 13, one is provided at a position where the phase difference from the base shape given the design wavelength λ0 is not 2 nmπ. 0.9 ⁢ d ≤ m · λ n 1 ⁡ ( λ ) - 1 ≤ 1.1 ⁢ d
摘要翻译：根据本发明的衍射光栅透镜是衍射光栅透镜11，包括：透镜体12; 以及设置在透镜主体12的表面上的相对于基部形状的多个衍射台和插入在衍射台之间的多个衍射光栅13.透镜体12由折射率为n1的第一材料 λ）; 衍射光栅13与空气接触; 并且满足以下不等式的关系，其中d是衍射级的设计步长，m是衍射级。多个环状区域中的每一个包括中间部分和沿着径向方向夹住中间部分的一对端部，并且在多个环形区域中的至少一个中设置有凹部18和突起19中的任一个在所述一对端部中的一个的至少一部分中，并且所述凹部18和所述突起19中的另一个设置在所述一对端部中的另一个的至少一部分中。在衍射光栅13的两种衍射台阶17A和17B之间，在与设计波长λ0的基底相位差不是2nm＆pgr的位置处设置一个。 0.9d≤m·λn 1⁡（λ）-1≤1.1d

26. 发明申请

US20120300301A1 DIFFRACTION-GRATING LENS, AND IMAGING OPTICAL SYSTEM AND IMAGING DEVICE USING SAID DIFFRACTION-GRATING LENS 审中-公开
标题翻译：衍射光泽镜，成像光学系统和成像设备使用镜面衍射光泽
公开(公告)号：US20120300301A1
公开(公告)日：2012-11-29
申请号：US13575781
申请日：2011-12-09
申请人： Takamasa Ando , Tsuguhiro Korenaga
发明人： Takamasa Ando , Tsuguhiro Korenaga
IPC分类号： G02B27/44 , G02B5/18
CPC分类号： G02B5/1814 , G02B13/06 , G02B27/0018 , G02B27/4211 , G02B27/4277
摘要： An imaging optical system according to the present invention includes: at least one diffraction grating lens with a diffraction grating that is made up of q diffraction ring zones; and a stop. A surface of the at least one diffraction grating lens that has the diffraction grating is a lens surface that is located closest to the stop. Supposing the respective widths of diffraction ring zones that are located first, second, (m−1)th and mth closest to the optical axis of the optical system are identified by P1, P2, Pm-1 and Pm, at least one m that falls within the range 3 1.6 ( 3 )
摘要翻译：根据本发明的成像光学系统包括：具有衍射光栅的至少一个衍射光栅透镜，其由q个衍射环区组成; 和一个停止。具有衍射光栅的至少一个衍射光栅透镜的表面是位于最靠近挡块的透镜表面。假设由P1，P2，Pm-1和Pm表示位于第一，第二，第（m-1）和第m最靠近光学系统的光轴的衍射环区的宽度，至少一米落在3 1.6（3）

27. 发明申请

US20120243096A1 DIFFRACTION GRATING LENS AND METHOD OF PRODUCING THE SAME, AND IMAGING DEVICE IN WHICH THE SAME IS USED 有权
标题翻译：衍射光泽镜片及其制造方法以及使用其的成像装置
公开(公告)号：US20120243096A1
公开(公告)日：2012-09-27
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： G02B5/18 , B29D11/00
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。

28. 发明申请

US20120092769A1 DIFFRACTIVE LENS 有权
公开(公告)号：US20120092769A1
公开(公告)日：2012-04-19
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： 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的常数，b 0

29. 发明申请

US20120069327A1 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：US20120069327A1
公开(公告)日：2012-03-22
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。

30. 发明授权

US08045268B2 Imaging device, and diffraction grating lens for use in the device 有权
$Imaging device, and diffraction grating lens for use in the device$
标题翻译：成像装置和用于装置的衍射光栅透镜
公开(公告)号：US08045268B2
公开(公告)日：2011-10-25
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： G02B5/18 , G02B27/44
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。（1）这里，Λmin为最小区间间距12，最小区域间距为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。

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