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1. 发明授权

US11327206B2 Diffuser 有权
公开(公告)号：US11327206B2
公开(公告)日：2022-05-10
申请号：US16531214
申请日：2019-08-05
申请人： NALUX CO., LTD.
发明人： Daisuke Seki , Yukinobu Nishio , Toru Inomata , Masato Okano
IPC分类号： G02B5/02 , G02B27/00
摘要： A diffuser provided with plural shapes obtained by translation on an xy plane of at least one of z=g(x, y) and z=−g(x, y), z=g(x, y) being a smooth function within a rectangle having sides of length of s in x direction and sides of length of t in y direction, the origin being the center of the rectangle, wherein on the sides of the rectangle, g ⁡ ( x , y ) = 0 , ⁢ ∂ g ⁡ ( x , y ) ∂ x = 0 , ⁢ ∂ g ⁡ ( x , y ) ∂ y = 0 , ⁢ ∂ 2 ⁢ g ⁡ ( x , y ) ∂ x 2 = 0 , and ∂ 2 ⁢ g ⁡ ( x , y ) ∂ y 2 = 0 , and wherein z=g(x, y) has a single vertex at (xv,yv) g(x,y)=h1(x)·h2(y), first derivative of z=h1(x) is continuous in ( - s 2 , s 2 ) , second derivative of z=h1(x) has a single point of discontinuity in ( - s 2 , x v ) and ⁢ ( x v , s 2 ) , first derivative of z=h2(y) is continuous in ( - t 2 , t 2 ) , and second derivative of z=h2(y) has a single point of discontinuity in ( - t 2 , y v ) and ⁢ ( y v , t 2 ) .

2. 发明申请

US20220075103A1 REFLECTOR 有权
公开(公告)号：US20220075103A1
公开(公告)日：2022-03-10
申请号：US17528398
申请日：2021-11-17
申请人： NALUX CO., LTD.
发明人： Tomohito KUWAGAITO
IPC分类号： G02B5/124 , G02B5/04
摘要： The reflector is provided with plural reflector units. Each reflector unit is shaped as a prism or a cylinder provided with a retroreflective structure at one end, the retroreflective structure is configured to reflect incident rays from the other end of the prism or the cylinder in a direction of incidence, and in a reference cross section of the reflector unit, the reference cross section containing the central axis of the prism or the cylinder and the reference cross section being determined such that the shape of the retroreflective structure is line-symmetric with respect to the central axis in the reference cross section, the shape of a light receiving surface at the other end is line-symmetric with respect to the central axis and has a portion inclined with respect to a direction perpendicular to the central axis in the reflector unit.

3. 发明授权

US10458882B2 Element provided with portion for position determination and measuring method 有权
公开(公告)号：US10458882B2
公开(公告)日：2019-10-29
申请号：US15664193
申请日：2017-07-31
申请人： NALUX CO., LTD.
发明人： Takahiro Fujioka , Katsumoto Ikeda
IPC分类号： G01M11/02 , G06T7/70 , G02B6/42 , G06T7/60 , G01B11/26 , G06T7/73
摘要： A method for measuring a position of a target surface provided with portions for position determination thereon, wherein a diffuse reflectance of the target surface is 0.1% or less, and a diffuse reflectance of the portions for position determination is 5% or more, and wherein the target surface is configured such that a tangential plane at any point on the target surface where each of the portions for position determination is installed forms an arbitrary angle between 15 degrees and 75 degrees inclusive with a certain direction, the method including the steps of illuminating the target surface with parallel light in the certain direction; determining positions of border lines of the plural portions for position determination from an image of the target surface; and determining the position of the target surface from the positions of the border lines of the plural portions for position determination.

4. 发明授权

US10365539B2 Optical imaging system 有权
公开(公告)号：US10365539B2
公开(公告)日：2019-07-30
申请号：US15204728
申请日：2016-07-07
申请人： NALUX CO., LTD.
发明人： Norihisa Sakagami
IPC分类号： G02B13/22 , G02B13/04 , G03B11/00
摘要： An optical imaging system according to the present invention includes, in order from an object side to an image side, a first lens with negative refractive power, a second lens that is a meniscus lens having a convex image-side surface, an aperture stop, a third lens with positive refractive power, and a lens group with positive refractive power. When the center thickness of the first lens is represented as t1, the center thickness of the second lens is represented as t2 and the focal length of the whole system is represented as f, t1/f>1.2 and t2/f>1.2 are satisfied.

5. 发明授权

US10295754B2 Position determination method and element 有权
公开(公告)号：US10295754B2
公开(公告)日：2019-05-21
申请号：US15967974
申请日：2018-05-01
申请人： NALUX CO., LTD.
发明人： Takahiro Fujioka , Hironori Horikiri , Katsumoto Ikeda
IPC分类号： G02B6/38 , G01B11/00 , G01B11/14
摘要： A position determination method for determining a position of a point on a flat surface by observing the position of the point and a position of a fiducial portion on the flat surface in an image of a measuring system provided with an imaging optical system using coaxial episcopic illumination is provided. The fiducial portion is in the shape of a pillar at least in the basal portion and provided with an inclined surface surrounding the foot of the pillar. The method includes the steps of determining a position of the outer boundary of the foot from the boundary between the inclined surface and the flat surface in the image; determining the position of the fiducial portion from the position of the outer boundary of the foot; and determining the position of the point with respect to the position of the fiducial portion.

6. 发明授权

US09857051B2 Optical element, illumination device including the optical element, and illumination module including the illumination device 有权
公开(公告)号：US09857051B2
公开(公告)日：2018-01-02
申请号：US14299179
申请日：2014-06-09
申请人： NALUX CO., LTD.
发明人： Katsumoto Ikeda , Daisuke Seki
IPC分类号： F21V5/04 , F21V5/00 , G02B19/00 , F21V5/08 , F21W131/103 , F21Y115/10
CPC分类号： F21V5/007 , F21V5/04 , F21V5/048 , F21V5/08 , F21W2131/103 , F21Y2115/10 , G02B19/0014 , G02B19/0066 , G02B19/0071
摘要： An optical element is provided. When in a xz cross section, an angle which a ray travelling from the origin at θr forms with the normal to the light receiving surface is designated as φx, an angle which a ray travelling from b in the z axis direction forms, after the surface, with the z axis direction is designated as θib, in a yz cross section, an angle which a ray travelling from the origin at θr forms with the normal to the light receiving surface is designated as φy, angles which a ray travelling from a in the z axis direction forms, after the light receiving and exiting surfaces, with the z axis direction are designated as θia and θea, and an angle which a ray travelling from the origin at arctan(a/ha) forms, after the light exiting surface, with the z axis direction is designated as θeha, φy>φx (0 45° θea>45° θia>θib are satisfied.

7. 发明授权

US09618660B2 Infrared imaging system 有权
公开(公告)号：US09618660B2
公开(公告)日：2017-04-11
申请号：US14621588
申请日：2015-02-13
申请人： NALUX CO., LTD. , FLIR Systems, Inc.
发明人： Kayoko Fujimura , Katsumoto Ikeda , Daisuke Seki
IPC分类号： G02B3/04 , G02B13/14 , G02B3/08
CPC分类号： G02B3/04 , G02B3/08 , G02B13/14
摘要： An infrared imaging system used for infrared rays of wavelength of 5 micrometers or greater, the system including, from the object side to the image side, an aperture, a lens made of synthetic resin and an imaging element, the object side surface of the lens being convex to the object side in the paraxial area, wherein F-number of the system is 1.4 or smaller.

8. 发明授权

US08974086B2 Lens, mold for lens and method for machining mold 有权
标题翻译：透镜，镜片模具及加工模具的方法
公开(公告)号：US08974086B2
公开(公告)日：2015-03-10
申请号：US13339556
申请日：2011-12-29
申请人： Masafumi Seigo
发明人： Masafumi Seigo
IPC分类号： F21V5/04 , B29D11/00 , G02B9/04 , G02B27/30 , G02B3/06
CPC分类号： B29D11/0048 , C03B2215/03 , G02B3/06 , G02B9/04 , G02B27/30 , Y10T29/49
摘要： A lens used for a line generating optical system is provided, wherein X-axis is defined in longitudinal direction of the generated line, Y-axis is defined in width direction and Z-axis is defined in direction of the optical axis and wherein the lens has an optical surface which does not collimate the light in X-axis direction and which collimates or collects the light in Y-axis direction alone, inclination of direction of transferred tool mark with respect to X-axis being from 40 to 50 degrees in an area of 80% or more of the optical surface.
摘要翻译：提供了一种用于线生成光学系统的透镜，其中X轴被限定在所生成的线的纵向方向上，Y轴被限定在宽度方向上，Z轴在光轴方向上限定，并且其中透镜具有不会使X轴方向上的光准直的光学面，并且仅在Y轴方向上准直或收集光，所以在X轴方向上的转印刀具的方向的倾斜度为40〜50度，面积为80％以上的光学面。

9. 发明申请

US20130258489A1 SCANNER LENS AND METHOD FOR PRODUCING THE SAME 有权
标题翻译：扫描仪透镜及其制造方法
公开(公告)号：US20130258489A1
公开(公告)日：2013-10-03
申请号：US13852273
申请日：2013-03-28
申请人： NALUX CO., LTD.
发明人： Tomohito KUWAGAITO , Yosuke SAKOHIRA , Daisuke SEKI
IPC分类号： G02B3/00
CPC分类号： G02B3/00 , G02B1/043 , G02B3/06 , G02B26/125
摘要： The method includes the steps of: obtaining lateral magnification of an optical scanning system; obtaining the maximum value of thickness in the optical axis direction of an scanner lens; obtaining allowance b on one side and beam diameter a in the vertical scanning direction in the lens; and obtaining width h in the vertical scanning direction of the lens by the following expression h=a+2b. The allowance b is a product of the maximum value of thickness in the optical axis direction of the lens and a coefficient, and the coefficient is determined according to the lateral magnification of the system in such a way that the maximum value of movement of the focal point of the lens due to moisture absorption is made smaller than or equal to a predetermined value.
摘要翻译：该方法包括以下步骤：获得光学扫描系统的横向放大率; 获得扫描仪透镜的光轴方向的最大厚度值; 在透镜中获得一侧的允许量b和在垂直扫描方向上的光束直径a; 并且通过以下表达式h = a + 2b获得透镜的垂直扫描方向上的宽度h。余量b是透镜的光轴方向上的厚度的最大值与系数的乘积，并且系数根据系统的横向放大率确定，使得焦点的最大运动值由于吸湿而使镜片的点小于或等于预定值。

10. 发明申请

US20130063952A1 OPTICAL ELEMENT AND ILLUMINATION DEVICE USING THE SAME 有权
标题翻译：使用该光学元件和照明装置
公开(公告)号：US20130063952A1
公开(公告)日：2013-03-14
申请号：US13670763
申请日：2012-11-07
申请人： NALUX CO., LTD.
发明人： Katsumoto IKEDA , Daisuke SEKI
IPC分类号： F21V5/04
CPC分类号： F21V5/04 , F21V5/046 , F21Y2105/10 , F21Y2115/10 , G02B19/0014 , G02B19/0066 , G02F1/1335 , H01L33/58
摘要： An illumination device for planar light sources gives uniform illumination on an illuminated plane. A of lengthwise direction and length of breadthwise direction are different from each other. The illumination device includes a planar light source and an optical element including a light receiving surface for receiving light form the planar light source and a light exiting surface. A shape of the planar light source is symmetric with respect to x-axis and y-axis and a length of the shape in x-axis direction is shorter than length of the shape in y-axis direction; the center of the planar light source is set as the origin and two axes orthogonal to each other are selected as x-axis and y-axis. Assuming that the maximum value of x-coordinate of the planar light source is a and the maximum value of y-coordinate of the planar light source is b, the following relationships hold: h ab = ( h a + a ) - ( h b + b ) ( h a + a ) h ab ≤ 0.02 .
摘要翻译：用于平面光源的照明装置在照明平面上提供均匀的照明。纵向方向和宽度方向的长度A彼此不同。照明装置包括平面光源和包括用于接收来自平面光源的光的光接收表面和光出射表面的光学元件。平面光源的形状相对于x轴和y轴对称，并且x轴方向的形状长度短于y轴方向的形状的长度; 将平面光源的中心设置为原点，并且将彼此正交的两个轴选择为x轴和y轴。假设平面光源的x坐标的最大值为a，平面光源的y坐标的最大值为b，则以下关系成立：h ab =（ha + a） - （hb + b ）（ha + a）h ab≤0.02。

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