公开(公告)号：US5956176A

公开(公告)日：1999-09-21

申请号：US932248

申请日：1997-09-17

Applicant: James A. Harder ,  Val J. Herrera

Inventor： James A. Harder ,  Val J. Herrera

IPC: G02B3/02 ,  G02B3/10 ,  G02B26/10 ,  H04N5/33 ,  H04N5/365 ,  G02B23/00 ,  G02B13/14 ,  H01L25/00

CPC classification number: H04N5/3651 ,  G02B26/10 ,  G02B26/105 ,  G02B3/10 ,  H04N5/33

Abstract: An image detection system (10) uses an optical configuration for both image forming and calibration phases of operation. A field lens (20) has an inner portion (36) of a conventional prescription to allow for collection of scene based energy for an opto-electronic approximation of the infrared detail within the afocal field of view by a focal plane array (32). The field lens (20) also has an outer portion (38) that collects far field energy from a scene area (A.sub.I) through a converging point (P.sub.I). The energy collected from the scene area (A.sub.I) is indicative of the average energy level within the scene. The electrical equivalent values of all energy received from the unique area (A.sub.I) is stored in a multidimensional range used for subsequent gain and offset calibration coefficient calculations.

公开(公告)号：US5886834A

公开(公告)日：1999-03-23

申请号：US931925

申请日：1997-09-17

Applicant: James A. Harder ,  Val J. Herrera

Inventor： James A. Harder ,  Val J. Herrera

IPC: G02B3/02 ,  G02B3/10 ,  G02B26/10 ,  H04N5/33 ,  H04N5/365 ,  G02B13/18 ,  G02B13/14

CPC classification number: H04N5/3651 ,  G02B26/10 ,  G02B26/105 ,  G02B3/10 ,  H04N5/33

Abstract: An image detection system (10) uses an optical configuration for both image forming and calibration phases of operation. A field lens (20) has an inner portion (36) of a conventional prescription to allow for collection of scene based energy for an opto-electronic approximation of the infrared detail within the afocal field of view by a focal plane array (32). The field lens (20) also has an outer portion (38) that collects far field energy from a scene area (A.sub.I) through a converging point (P.sub.I). The energy collected from the scene area (A.sub.I) is indicative of the average energy level within the scene. The electrical equivalent values of all energy received from the unique area (A.sub.I) is stored in a multidimensional range used for subsequent gain and offset calibration coefficient calculations.

Abstract translation: 图像检测系统（10）使用用于图像形成和操作的校准阶段的光学配置。 场透镜（20）具有常规处方的内部部分（36），以允许通过焦平面阵列（32）收集在无焦距视场内的红外细节的光电近似的基于场景的能量。 场透镜（20）还具有通过会聚点（PI）从场景区域（AI）收集远场能的外部部分（38）。 从场景区域（AI）收集的能量表示场景内的平均能量水平。 从独特区域（AI）接收的所有能量的电当量值存储在用于后续增益和偏移校准系数计算的多维范围内。

公开(公告)号：US5745285A

公开(公告)日：1998-04-28

申请号：US741877

申请日：1996-10-30

Applicant: James A. Harder ,  Val J. Herrera

Inventor： James A. Harder ,  Val J. Herrera

IPC: G02B3/02 ,  G02B3/10 ,  G02B26/10 ,  H04N5/33 ,  H04N5/365 ,  G02B13/14

CPC classification number: H04N5/3651 ,  G02B26/10 ,  G02B26/105 ,  G02B3/10 ,  H04N5/33

Abstract: An image detection system (10) uses an optical configuration for both image forming and calibration phases of operation. A field lens (20) has an inner portion (36) of a conventional prescription to allow for collection of scene based energy for an opto-electronic approximation of the infrared detail within the afocal field of view by a focal plane array (32). The field lens (20) also has an outer portion (38) that collects far field energy from a scene area (A.sub.I) through a converging point (P.sub.I). The energy collected from the scene area (A.sub.I) is indicative of the average energy level within the scene. The electrical equivalent values of all energy received from the unique area (A.sub.I) is stored in a multidimensional range used for subsequent gain and offset calibration coefficient calculations.

公开(公告)号：US20120293861A1

公开(公告)日：2012-11-22

申请号：US13110319

申请日：2011-05-18

Applicant: James A. Harder ,  Michaelene W. Sprague

Inventor： James A. Harder ,  Michaelene W. Sprague

IPC: G02B13/14 ,  G02B27/00

CPC classification number: G02B27/0025 ,  G02B27/0101 ,  G02B2027/011

Abstract: In a method embodiment, a method for correcting astigmatism caused by an aircraft canopy comprises receiving at a compensator module a plurality of light rays that have been refracted by an aircraft canopy. At least two of the refracted light rays have respective foci different from one another and propagate in respective planes that are substantially perpendicular to one another, such that astigmatism occurs. The method further includes using the compensator module to substantially compensate for the astigmatism by providing astigmatic power to the received plurality of light rays. The method also includes providing the plurality of light rays having the astigmatic power compensation to an imaging module. The imaging module is configured to generate imagery using the plurality of light rays having the astigmatic power compensation.

Abstract translation: 在方法实施例中，一种用于校正由飞机机罩引起的散光的方法包括在补偿器模块处接收已经被飞机机架折射的多个光线。 至少两个折射光线具有彼此不同的各自的焦点，并且在彼此基本垂直的各个平面中传播，使得发生散光。 该方法还包括使用补偿器模块通过向所接收的多个光线提供像散电力来基本上补偿像散。 该方法还包括向成像模块提供具有像散功率补偿的多个光线。 成像模块被配置为使用具有像散功率补偿的多个光线来生成图像。

公开(公告)号：US5969885A

公开(公告)日：1999-10-19

申请号：US969069

申请日：1997-11-12

Applicant: James A. Harder ,  Keith A. Jacobson ,  Val J. Herrera

Inventor： James A. Harder ,  Keith A. Jacobson ,  Val J. Herrera

IPC: G01N21/27 ,  G06K9/20 ,  G02B7/02

CPC classification number: H04N17/002 ,  G01N21/274 ,  G06K9/209

Abstract: A system (10) for calibrating an image detector includes a calibration platform (16) supporting a calibration element (18). The calibration element (18) may be made up of a first portion (20) and a second portion (22), each having a curved surface (20A, 22A) to appropriately alter characteristics of reference light levels (33) generated by a reference source (24). The second portion (22) may have its surface positioned differently to the focal plane array (14) than the first portion (20) for enhanced calibration operation. The reference source (24) generates the reference light levels (33) over a range of temperatures to mimic the image energy generated by the scene (12). The reference source (24) may also include a reference portion element (26) that transmits reference light energy (33) generated by the reference source (24) or reflects scene base energy (34) generated by the scene (12) and allowed to pass through the first portion (20) and the second portion (22). The calibration platform (16) operates to position the first portion (20) and the second portion (22) in front of the focal plane array (14) during calibration operation and remove the first portion (20) and the second portion (22) from in front of the focal plane array (14) during normal image detection.

Abstract translation: 用于校准图像检测器的系统（10）包括支撑校准元件（18）的校准平台（16）。 校准元件（18）可以由第一部分（20）和第二部分（22）组成，每个部分具有弯曲表面（20A，22A），以适当地改变由参考产生的参考光级（33）的特性 来源（24）。 第二部分（22）可以具有与第一部分（20）不同于焦平面阵列（14）的表面，以增强校准操作。 参考源（24）在温度范围内产生参考光级（33），以模拟由场景（12）产生的图像能量。 参考源（24）还可以包括参考部分元件（26），其传送由参考源（24）产生的参考光能（33）或反射由场景（12）产生的场景基本能量（34） 穿过第一部分（20）和第二部分（22）。 校准平台（16）操作以在校准操作期间将第一部分（20）和第二部分（22）定位在焦平面阵列（14）的前面，并且移除第一部分（20）和第二部分（22） 在正常图像检测期间从焦平面阵列（14）的前方。

公开(公告)号：US5866900A

公开(公告)日：1999-02-02

申请号：US768877

申请日：1996-12-17

Applicant: Keith A. Jacobson ,  Val J. Herrera ,  James A. Harder

Inventor： Keith A. Jacobson ,  Val J. Herrera ,  James A. Harder

IPC: H01L31/00

CPC classification number: H04N5/33 ,  H04N5/3656

Abstract: An image detection system (10) includes a derotation optics assembly (24) that stabilizes images viewed from a scene (14) by individual detector elements (31) in a focal plane array (32). The derotation optics assembly (24) also is used in providing scene based calibration to the individual detector elements (31). The derotation optics assembly (24) places images viewed from the scene (14) in a first rotation position. The individual detector elements (31) collect scene based energy at the first rotation position. The derotation optics assembly (24) places images viewed from the scene (14) in a second rotation position. The individual detector elements (31) collect scene based energy at the second rotation position. Comparisons are made among outputs of the individual detector elements (31) at the first and second rotation positions. Correction factors for each of the individual detector elements (31) are adjusted in response to the comparisons in order to compensate for the differing voltage offsets and gains among the individual detector elements (31).

Abstract translation: 图像检测系统（10）包括解调光学组件（24），其通过焦平面阵列（32）中的各个检测器元件（31）稳定从场景（14）观看的图像。 解旋光学组件（24）还用于向各个检测器元件（31）提供基于场景的校准。 解旋光学组件（24）将从场景（14）观看的图像置于第一旋转位置。 各个检测器元件（31）在第一旋转位置处收集基于场景的能量。 解旋光学组件（24）将从场景（14）观看的图像放置在第二旋转位置。 各个检测器元件（31）在第二旋转位置处收集基于场景的能量。 在第一和第二旋转位置处，各个检测器元件（31）的输出之间进行比较。 响应于比较来调整每个单独检测器元件（31）的校正因子，以便补偿各个检测器元件（31）之间的不同电压偏移和增益。

公开(公告)号：US5705811A

公开(公告)日：1998-01-06

申请号：US741875

申请日：1996-10-30

Applicant: James A. Harder ,  Keith A. Jacobson ,  Val J. Herrera

Inventor： James A. Harder ,  Keith A. Jacobson ,  Val J. Herrera

IPC: G01N21/27 ,  G06K9/20 ,  H05H3/02

CPC classification number: H04N17/002 ,  G01N21/274 ,  G06K9/209

Abstract: A system (10) for calibrating an image detector includes a calibration platform (16) supporting a calibration element (18). The calibration element (18) may be made up of a first lens (20) and a second lens (22), each having a curved surface to appropriately alter characteristics of reference light levels (33) generated by a reference source (24). The second lens (22) may have its surface positioned differently to the focal plane array (14) than the first lens mirror (20) for enhanced calibration operation. The reference source (24) generates the reference light levels (33) over a range of temperatures to mimic the image energy generated by the scene (12). The reference source (24) may also include a reference lens element (26) that transmits reference light energy (33) generated by the reference source (24) or reflects scene base energy (34) generated by the scene (12) and allowed to pass through the first lens (20) and the second lens (22). The calibration platform (16) operates to position the first lens (20) and the second lens (22) in front of the focal plane array (14) during calibration operation and remove the first lens (20) and the second lens (22) from in front of the focal plane array (14) during normal image detection.

Abstract translation: 用于校准图像检测器的系统（10）包括支撑校准元件（18）的校准平台（16）。 校准元件（18）可以由第一透镜（20）和第二透镜（22）组成，每个具有弯曲表面以适当地改变由参考源（24）产生的参考光级（33）的特性。 第二透镜（22）可以具有与第一透镜（20）不同的焦平面阵列（14）的表面，以增强校准操作。 参考源（24）在温度范围内产生参考光级（33），以模拟由场景（12）产生的图像能量。 参考源（24）还可以包括参考透镜元件（26），其透射由参考源（24）产生的参考光能（33）或反射由场景（12）产生的场景基本能量（34），并被允许 穿过第一透镜（20）和第二透镜（22）。 校正平台（16）操作以在校准操作期间将第一透镜（20）和第二透镜（22）定位在焦平面阵列（14）的前面，并且移除第一透镜（20）和第二透镜（22） 在正常图像检测期间从焦平面阵列（14）的前方。