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公开(公告)号：US20150254375A1
公开(公告)日：2015-09-10
申请号：US14616457
申请日：2015-02-06
发明人： TONG YANG , JUN ZHU , GUO-FAN JIN , SHOU-SHAN FAN
摘要： A method for designing freeform surface is provided. An initial surface is established. A plurality of feature rays are selected. A plurality of intersections of the plurality of feature rays with an unknown freeform surface are calculated based on a given object-image relationship and a vector form of the Snell's law. The plurality of intersections are a plurality of feature data points. An unknown freeform surface equation is obtained by surface fitting the plurality of feature data points.
摘要翻译： 提供了一种用于设计自由曲面的方法。 建立初始曲面。 选择多个特征射线。 基于给定的对象图像关系和斯涅尔定律的向量形式，计算多个特征射线与未知自由曲面的多个交点。 多个交点是多个特征数据点。 通过表面拟合多个特征数据点获得未知的自由曲面方程。
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12.发明申请METHOD FOR DESIGING OFF-AXIAL THREE-MIRROR OPTICAL SYSTEM WITH FREEFORM SURFACES 审中-公开用FREEFORM表面设计离轴三镜光学系统的方法公开(公告)号：US20150253554A1
公开(公告)日：2015-09-10
申请号：US14616463
申请日：2015-02-06
发明人： TONG YANG , JUN ZHU , GUO-FAN JIN , SHOU-SHAN FAN
CPC分类号： G02B17/0642 , G02B27/0012 , G06F17/50 , G06F17/5086
摘要： A method for designing off-axial three-mirror optical system with freeform surfaces is provided. A first initial surface, a second initial surface, and a third initial surface are established. A plurality of feature rays are selected, while the first initial surface and the third initial surface remain unchanged; a plurality of first feature data points are calculated to obtain a third freeform surface equation by surface fitting the plurality of first feature data points. A third freeform surface and the second initial surface are remained unchanged; a plurality of second feature data points are calculated to obtain a first freeform surface equation by surface fitting the plurality of second feature data points. The third freeform surface and a first freeform surface are remained unchanged; a plurality of third feature data points are calculated to obtain a second freeform surface equation by surface fitting the plurality of third feature data points.
摘要翻译： 提供了一种用于设计具有自由曲面的离轴三镜光学系统的方法。 建立第一初始表面，第二初始表面和第三初始表面。 选择多个特征射线，而第一初始表面和第三初始表面保持不变; 计算多个第一特征数据点以通过表面拟合多个第一特征数据点来获得第三自由曲面方程。 第三自由曲面和第二初始表面保持不变; 计算多个第二特征数据点，以通过表面拟合多个第二特征数据点来获得第一自由曲面方程。 第三自由曲面和第一自由曲面保持不变; 计算多个第三特征数据点，以通过表面拟合多个第三特征数据点来获得第二自由曲面方程。
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公开(公告)号：US20150234941A1
公开(公告)日：2015-08-20
申请号：US14604353
申请日：2015-01-23
发明人： SI-SI XIONG , JUN ZHU , GUO-FAN JIN , SHOU-SHAN FAN
CPC分类号： G06F17/50 , G06F17/13 , G06F2217/16
摘要： A design method of LED freeform surface illumination system is provided. A light emitting angle of a LED point light source is divided into three regions. Each region can form a rectangular light spot on a light receiving surface. A mapping relationship of each region on the receiving surface is obtained. A light redistribution design for the LED point light source is performed and a system of first order partial differential equations of a freeform surface is achieved. A system of first order quasi linear differential equations of the freeform surface is obtained. A plurality of freeform surface data is obtained by solving the system of first order quasi linear differential equations. The freeform surface is obtained by surface fitting the plurality of freeform surface data.
摘要翻译： 提供了LED自由曲面照明系统的设计方法。 LED点光源的发光角度分为三个区域。 每个区域可以在光接收表面上形成矩形光斑。 获得接收面上各区域的映射关系。 执行LED点光源的光再分配设计，并实现自由曲面的一阶偏微分方程的系统。 获得了自由曲面的一阶准线性微分方程组。 通过求解一阶准线性微分方程的系统获得多个自由曲面数据。 通过表面拟合多个自由曲面数据获得自由曲面。
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公开(公告)号：US20150233535A1
公开(公告)日：2015-08-20
申请号：US14604359
申请日：2015-01-23
发明人： JUN ZHU , SI-SI XIONG , GUO-FAN JIN , SHOU-SHAN FAN
IPC分类号： F21K99/00
CPC分类号： G02B19/0061 , F21V5/04 , F21Y2101/00 , F21Y2115/10
摘要： A LED freeform surface illumination system is provided. The LED freeform surface illumination system includes a LED point light source, a freeform surface lens, and a light receiving surface. A light emitting angle φ of the LED point light source is divided into three regions. The freeform surface lens includes a spherical surface and a freeform surface opposite to the spherical surface. The freeform surface comprises three annular regions. Each region of the three regions of the light emitting angle φ of the LED point light source corresponds with one annular region of the freeform surface. Lights of each region of the three regions of the light emitting angle φ of the LED point light source pass the corresponded annular region of the freeform surface to form one rectangular light spot.
摘要翻译： 提供LED自由曲面照明系统。 LED自由曲面照明系统包括LED点光源，自由曲面透镜和光接收表面。 发光角度 的LED点光源分为三个区域。 自由曲面透镜包括球形表面和与球形表面相对的自由曲面。 自由曲面包括三个环形区域。 发光角度三个区域的每个区域 的LED点光源对应于自由曲面的一个环形区域。 发光角度三个区域的每个区域的光 的LED点光源通过相应的自由曲面的环形区域以形成一个矩形光点。
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公开(公告)号：US20210037199A1
公开(公告)日：2021-02-04
申请号：US16910370
申请日：2020-06-24
发明人： WEI-CHEN WU , JUN ZHU , GUO-FAN JIN , SHOU-SHAN FAN
摘要： The present invention relates to a method for designing a freeform surface reflective imaging system, comprising: selecting an initial system, wherein an FOV of the initial system is X0×Y0; selecting an FOV sequence as [X0, Y0], [X1, Y1], [X2, Y2], . . . , [Xn, Yn], while the FOV of the system to be designed is Xn×Yn, and X0
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公开(公告)号：US20200241288A1
公开(公告)日：2020-07-30
申请号：US16502148
申请日：2019-07-03
发明人： Rui-rui Tang , JUN ZHU , GUO-FAN JIN , SHOU-SHAN FAN
摘要： A method of designing an freeform surface off-axial three-mirror imaging system is provided. The method includes: establishing an initial system and T (T≥2) object-image relationships according to a design goal, and selecting M feature fields for each object-image relationship; using feature rays of the T object-image relationships to construct a freeform surface system by using the initial system; step (S3), the freeform surface system obtained in step (S2) is used as another initial system, using iterative process to reduce a deviation between actual intersection points and ideal target points of the feature rays and feature surfaces, iteratively reconstructing free-form surfaces in the free-form surface system.
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公开(公告)号：US20200241268A1
公开(公告)日：2020-07-30
申请号：US16502147
申请日：2019-07-03
发明人： JUN ZHU , Rui-rui Tang , GUO-FAN JIN , SHOU-SHAN FAN
摘要： A freeform surface off-axial three-mirror imaging system comprising a primary mirror, a secondary mirror, a tertiary mirror, and a detector. The secondary mirror defines a first location and a second location. Each reflective surface of the primary mirror, the secondary mirror and the tertiary mirror is an xy polynomial freeform surface. A working distance of the freeform surface off-axial three-mirror imaging system is greater than 125 mm.
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公开(公告)号：US20190250033A1
公开(公告)日：2019-08-15
申请号：US16246790
申请日：2019-01-14
发明人： JUN ZHU , Ben-qi Zhang , GUO-FAN JIN , SHOU-SHAN FAN
CPC分类号： G01J3/024 , G01J3/2823
摘要： A freeform surface imaging spectrometer system including a primary mirror, a secondary mirror, a tertiary mirror, and a detector is provided. The secondary mirror is a grating having a freeform surface shape, and the grating having the freeform surface shape is obtained by intersecting a set of equally spaced parallel planes with a freeform surface. A plurality of feature rays exiting from a light source is successively reflected by the primary mirror, the secondary mirror and the tertiary mirror to form an image on an image sensor. A reflective surface of each of the primary mirror, the tertiary mirror surface and the tertiary mirror is an xy polynomial freeform surface.
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公开(公告)号：US20180210981A1
公开(公告)日：2018-07-26
申请号：US15841311
申请日：2017-12-14
发明人： JUN ZHU , TONG-TONG GONG , GUO-FAN JIN , SHOU-SHAN FAN
CPC分类号： G06F17/5009 , G02B5/10 , G06F17/5018
摘要： A method for designing a hybrid surface optical system comprises establishing a first initial system; keeping the first initial system unchanged and calculating a plurality of first feature data points, and fitting the first feature data points to obtain a spherical surface; repeating such steps until all spherical surfaces are obtained; calculating a plurality of second feature data points, and fitting the plurality of second feature data points to obtain an aspheric surface; repeating such steps until all aspheric surfaces are obtained; calculating a plurality of third feature data points, and fitting the plurality of third feature data points to obtain a freeform surface; repeating such steps until all freeform surfaces are obtained.
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公开(公告)号：US20180210325A1
公开(公告)日：2018-07-26
申请号：US15721745
申请日：2017-09-30
发明人： JUN ZHU , XIAO-FEI WU , GUO-FAN JIN , SHOU-SHAN FAN
摘要： A method for designing illumination system with freeform surface, the method comprising: presupposing a plurality of expected light spots; establishing an initial system, wherein the initial system comprises a plurality of collimated light sources, a plane lens and a target plane; designing a sphere lens to replace the plane lens, and obtaining a before-construction-iteration illumination system; selecting a plurality of feature rays and obtaining a plurality of target points; taking the before-construction-iteration illumination system as an initial construction-iteration system, and obtaining an after-construction-iteration illumination system with freeform surface by making multiple construction-iteration, wherein the illumination system with freeform surface is configured to form the plurality of expected light spots.
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