公开(公告)号：US5033203A

公开(公告)日：1991-07-23

申请号：US483619

申请日：1990-02-23

申请人： David B. Chang ,  James E. Drummond ,  Slava A. Pollack ,  I-Fu Shih

发明人： David B. Chang ,  James E. Drummond ,  Slava A. Pollack ,  I-Fu Shih

IPC分类号： B05C9/12 ,  B05C9/14 ,  B05D3/02 ,  B05D3/06 ,  F26B3/28 ,  F26B3/30

CPC分类号： F26B3/28 ,  F26B3/305

摘要： An improved curing oven using Wellsbach conversion is disclosed. The present invention 10 provides an improved curing oven which cures materials with electromagnetic radiation in the ultraviolet region. The invention consists of a surface 12 lined with a layer of material 14 effective to radiate ultraviolet radiation in response to the application of infrared radiation. In a specific illustrative implementation, the invention 10 includes a second surface 18 overlying the first surface 12 providing a passageway therebetween. The oven temperature is set and maintained by a conventional temperature controller 20. The temperature controller 20 measures the oven temperature and controls a valve 22 which adjusts the gas pressure from a gas supply 24 to a set of oven burners 26. Air is supplied through inlet ports 28 included in the second surface 18.

公开(公告)号：US5050992A

公开(公告)日：1991-09-24

申请号：US508436

申请日：1990-04-13

申请人： James E. Drummond ,  I-Fu Shih

发明人： James E. Drummond ,  I-Fu Shih

IPC分类号： G01J3/12 ,  G01J3/02 ,  G01J3/18 ,  G01J3/28

CPC分类号： G01J3/1838 ,  G01J3/0259 ,  G01J3/0237 ,  G01J3/0256 ,  G01J3/0286 ,  G01J3/0289 ,  G01J3/2803 ,  G01N21/3504 ,  G01N2201/067

摘要： This invention relates to a dispersive holographic spectrometer (12) for analyzing radiation from an infrared source (16). The holographic spectrometer (12) comprises a piezoelectric block (40) having a holographic lens (38) on one face, an array of detectors (36) on another face and a pair of vernier electrodes (32, 34) on opposite faces. Radiation from the source (16) incident upon the holographic lens (38) is dispersed into component wavelengths (44, 46) and directed towards the detector array (38). The holographic lens (36) has a holographic interference pattern recorded on it such that radiation of predetermined wavelength components are dispersed sufficiently enough such that radiation of specific wavelengths falls on different detector elements (48) of the detector array (36). By applying a voltage to the electrodes (32, 38), an electric field is created within the piezoelectric block (40) such that it is either compressed or expanded. This change in the piezoelectric block (40) alters the direction of the radiation from the holographic lens (38) to the detector array (36). Therefore, misalignment of the source (16) with the holographic lens (38) can be compensated for such that piezoelectric adjustment of the block (40) will make the radiation of individual wavelengths fall on the desired detector element (48). Further, radiation from different wavelengths can be directed from one detector element to another. The detector array (36) is self-scanning such that an absorption spectrum can be measured and recorded over a range of frequencies.

公开(公告)号：US5076662A

公开(公告)日：1991-12-31

申请号：US340655

申请日：1989-04-20

申请人： I-Fu Shih ,  David B. Chang ,  Norton L. Moise ,  James E. Drummond

发明人： I-Fu Shih ,  David B. Chang ,  Norton L. Moise ,  James E. Drummond

IPC分类号： G06E1/00 ,  G06E3/00 ,  G06T1/00

CPC分类号： G06E3/001

摘要： An electro-optical system that implements the self-tiling process of fining proper Iterated Function Systems for modeling natural objects. The system can operate in two different modes, a real-time interactive mode and an automated mode. The purpose of the system is to speed up the process of finding a proper IFS for a given object to be modeled. The system makes use of optical processing, including optical means for rotating, magnifying/demagnifying and translating an input image. Optical beamsplitters are used to combine transformed images to produce a tiled output image. In one embodiment, an automated controller evaluates the goodness of the match between the tiled image and the input image and generates control signals which cause adjustment of the settings of the optical means. The process is repeated automatically until the match is sufficiently good. The invention can also be operated in a manual, man-in-the-loop mode.

公开(公告)号：US5454047A

公开(公告)日：1995-09-26

申请号：US180394

申请日：1994-01-12

申请人： David B. Chang ,  I-Fu Shih

发明人： David B. Chang ,  I-Fu Shih

IPC分类号： G06T9/00 ,  G06K9/76

CPC分类号： G06T9/007

摘要： A system for optically generating expansion coefficients for an image processing function. The invention (10) includes a first optical element (18) for providing a transform of an image provided at a first image plane (16). A second optical arrangement (20) provides a product of the transform of the image and a transform of a convolving function. This product is transformed by a lens (22) to provide an image intensity distribution representative of expansion coefficients resulting from a convolution of the image by the convolving function. In a specific implementation, the convolving function is a wavelet and the intensity distribution is detected to provide the expansion coefficients.

摘要翻译： 一种用于光学地生成用于图像处理功能的扩展系数的系统。 本发明（10）包括用于提供在第一图像平面（16）处提供的图像的变换的第一光学元件（18）。 第二光学布置（20）提供图像的变换和卷积函数的变换的乘积。 该产品由透镜（22）变换以提供表示由卷积函数卷积的图像产生的膨胀系数的图像强度分布。 在具体实现中，卷积函数是小波，并且检测强度分布以提供扩展系数。

公开(公告)号：US5405680A

公开(公告)日：1995-04-11

申请号：US263151

申请日：1994-06-16

申请人： David B. Chang ,  Slava A. Pollack ,  I-Fu Shih ,  Albert J. Jicha

发明人： David B. Chang ,  Slava A. Pollack ,  I-Fu Shih ,  Albert J. Jicha

IPC分类号： B05D5/00 ,  B05D7/00 ,  B05D7/14 ,  B05D7/24 ,  C03C17/22 ,  C03C17/34 ,  C09D5/00 ,  G02B5/28 ,  C23C14/06

CPC分类号： C03C17/3435 ,  C03C17/22 ,  C03C17/347 ,  C03C17/3476 ,  C03C17/3488 ,  C09D5/00 ,  C03C2217/283 ,  C03C2217/288 ,  C03C2217/289 ,  C03C2217/29 ,  Y10S428/913 ,  Y10T428/24942 ,  Y10T428/2993

摘要： Selective emissivity coatings are disclosed for temperature reduction of enclosures such as vehicles and building structures. The coating includes a selective emissivity material such as silicon-oxy-nitride having a desired thermal emissivity function which is high in the 8-13 micron wavelength region, and low elsewhere except in the visible wavelength region. The material provides a mechanism for radiative cooling of the enclosure by converting the blackbody radiation of the enclosure, which would be reflected by the earth's atmosphere, into far infrared radiation which is transmitted by the atmosphere. According to another aspect of the invention, the coating further comprises a semimetal which is reflective of radiation in the near infrared region, thereby reducing the solar heat load on the enclosure. One suitable semimetal is LaB.sub.6. The coating may be applied to the exterior surface of vehicle and building windows, or to the exterior, non-window surfaces of building structures. For the latter, the coating may take the form of a conventional paint to which is added tiny particles of the semimetal and selective emissivity materials to achieve the radiative cooling and reflection of incident infrared radiation.

摘要翻译： 公开了选择性辐射涂层用于诸如车辆和建筑结构之类的外壳的温度降低。 涂层包括选择性发射率材料，例如具有期望的热发射率函数的硅 - 氮化物，其在8-13微米波长区域中是高的，并且在可见波长区域中除外。 该材料通过将被地球大气层反射的外壳的黑体辐射转换成由大气传播的远红外辐射而提供了用于辐射冷却外壳的机构。 根据本发明的另一方面，涂层还包括反射近红外区域中的辐射的半金属，从而减少外壳上的太阳能热负荷。 一种合适的半金属是LaB6。 涂层可以施加到车辆和建筑物窗户的外表面，或施加到建筑结构的外部非窗户表面。 对于后者，涂层可以采用常规涂料的形式，其中添加了半金属和选择性发射材料的微小颗粒，以实现入射红外辐射的辐射冷却和反射。

公开(公告)号：US5345522A

公开(公告)日：1994-09-06

申请号：US939237

申请日：1992-09-02

申请人： Victor Vali ,  David B. Chang ,  I-Fu Shih

发明人： Victor Vali ,  David B. Chang ,  I-Fu Shih

IPC分类号： G01D5/353 ,  G01H9/00 ,  G01V1/20 ,  G02B6/28 ,  G01B9/02 ,  G01V1/38 ,  H01J5/16

CPC分类号： G01H9/004 ,  G01D5/35383 ,  G01V1/201

摘要： A sensitive towed optical fiber sensor array 50, wherein the fiber sensors (60A-60N) are connected in parallel, and the optical fiber cable (34) is paid out from the towing ship at a velocity about equal to but opposite to the velocity of the towing ship. The fiber sensors (60A-60N) are immune to electromagnetic interference, and the output of the sensors can be isolated readily to the parallel hookup of the sensors. Turbulence and acceleration noise is greatly reduced due to the manner in which the fiber cable (34) is paid out, and crosstalk between sensors is eliminated.

摘要翻译： 一种敏感的牵引光纤传感器阵列50，其中光纤传感器（60A-60N）并联连接，光缆（34）以大约等于但与 牵引船。 光纤传感器（60A-60N）不受电磁干扰的影响，传感器的输出可以很容易地与传感器的并联连接。 由于支付光缆（34）的方式，湍流和加速噪声大大降低，并且消除了传感器之间的串扰。

公开(公告)号：US4727550A

公开(公告)日：1988-02-23

申请号：US777893

申请日：1985-09-19

申请人： David B. Chang ,  James C. McDaniel ,  Norton L. Moise ,  Winfield W. Salisbury ,  I-Fu Shih

发明人： David B. Chang ,  James C. McDaniel ,  Norton L. Moise ,  Winfield W. Salisbury ,  I-Fu Shih

IPC分类号： G21K1/06 ,  G21K5/04 ,  G21K5/08 ,  H01J27/00 ,  H01J35/00 ,  H01J35/08 ,  H01S3/09 ,  H01S4/00 ,  H05G2/00 ,  H01S3/00

CPC分类号： H01S3/0903

摘要： An improved radiation source is disclosed, exploiting the spontaneous radiation generated from the interaction of an electron beam and a conductive grating. Conditions are defined for generating coherent or noncoherent radiation, and for extending the tunability of the radiation source from millimeter, IR, visible and UV wavelengths to x-ray wavelengths, and for generating multiple wavelengths simultaneously. Conditions are disclosed for enhancing the intensity of the spontaneous radiation, anf for modulating the radiation.

摘要翻译： 公开了一种改进的辐射源，利用从电子束和导电光栅的相互作用产生的自发辐射。 定义条件用于产生相干或非相干辐射，并将辐射源的可调性从毫米，红外，可见光和紫外波长扩展到x射线波长，并同时产生多个波长。 公开了用于增强用于调制辐射的自发辐射强度的条件。

公开(公告)号：US06849855B1

公开(公告)日：2005-02-01

申请号：US08017953

申请日：1993-02-12

申请人： I-Fu Shih ,  David B. Chang

发明人： I-Fu Shih ,  David B. Chang

IPC分类号： G01J1/58

CPC分类号： G01J1/58

摘要： A method of marking and identifying an object (10) by the marking consists of applying to an object (10) an up-conversion material (12), then irradiating the object (10) with infrared electromagnetic radiation (16) and, finally, observing the irradiated object to detect the spectrum of emitted electromagnetic radiation (18). A suitable up-conversion material (12) is selected from a group of up-conversion materials consisting of CaF2, BaF2, CdF2, LaF2 and SrF2 doped with erbium, praseodymium, neodymium or dysprosium. The objects (10) may be observed to detect emitted electromagnetic radiation (18) from that part of the electromagnetic spectrum that is visible to the naked eye. The objects (10) may also be observed to detect specific wavelengths of electromagnetic radiation which are known to be emitted by the up-conversion material (12) when the up-conversion material (12) is irradiated by designated wavelengths of infrared electromagnetic radiation. The irradiating infrared radiation (16) may be encoded by modulation so that identification may be made by detection of the encoded modulation in the radiation emitted (18) from the up-conversion material (12).

摘要翻译： 通过标记来标记和识别物体（10）的方法包括向物体（10）施加上转换材料（12），然后用红外电磁辐射（16）照射物体（10），最后， 观察照射的物体以检测发射的电磁辐射的光谱（18）。 合适的上转换材料（12）选自由掺杂有铒，镨，钕或镝的CaF 2，BaF 2，CdF 2，LaF 2和SrF 2组成的上转换材料。 可以观察物体（10）以从肉眼可见的那部分电磁光谱检测发射的电磁辐射（18）。 当上转换材料（12）被指定的波长的红外电磁辐射照射时，也可以观察物体（10）以检测已知由上转换材料（12）发射的电磁辐射的特定波长。 照射红外辐射（16）可以通过调制进行编码，从而可以通过检测从上转换材料（12）发出的辐射（18）中的编码调制来进行识别。

公开(公告)号：US5281813A

公开(公告)日：1994-01-25

申请号：US907772

申请日：1992-06-30

申请人： I-Fu Shih

发明人： I-Fu Shih

IPC分类号： G01S7/497 ,  G01C25/00 ,  G01C3/08

CPC分类号： G01S7/497

摘要： An inexpensive, broadband technique for testing laser rangefinder systems. The invention includes a mechanism (18) for detecting an emission of a pulse of electromagnetic energy by a laser rangefinder under test (12) and providing a first signal in response thereto. In response to the first signal, a second signal is generated (20) with a predetermined delay on detection of the pulse from the laser rangefinder (12). The second signal is used to trigger a radiation source (16) which generates an output signal. This output signal simulates a return signal, the reflection of the pulse from a hypothetical target back to the laser rangefinding system.

摘要翻译： 一种用于测试激光测距系统的廉价宽带技术。 本发明包括一种用于通过被测试激光测距仪（12）检测电磁能脉冲的发射并提供响应于此的第一信号的机构（18）。 响应于第一信号，在检测到来自激光测距仪（12）的脉冲时，以预定的延迟产生（20）第二信号。 第二信号用于触发产生输出信号的辐射源（16）。 该输出信号模拟返回信号，将脉冲从假想目标反射回激光测距系统。

公开(公告)号：US5208766A

公开(公告)日：1993-05-04

申请号：US611597

申请日：1990-11-13

申请人： David B. Chang ,  I-Fu Shih ,  Michael E. Stickney

发明人： David B. Chang ,  I-Fu Shih ,  Michael E. Stickney

IPC分类号： G01N21/88 ,  G01B11/30 ,  G01N21/93 ,  G06T1/00 ,  H04N7/18

CPC分类号： G01B11/303

摘要： Human aesthetic evaluation of a finished painted surface, such as an automotive body, is automatically simulated by analyzing a distorted reflected test pattern from the finished surface. Fourier power spectra of the distorted test pattern are generated to form a parameterization of the reflected distorted test pattern. A correlation is statistically made to reference Fourier power spectra, each of which has been associated with a specific human aesthetic evaluation, such as wetness, dullness, softness, brightness, and the like. The Fourier power spectra of the distorted reflected image are automatically generated through a digitized two dimensional pixel map, which are mapped into functions of the edge direction and edge intensity of the pixels. The functions are then Fourier transformed into Fourier power spectra and correlated with reference reflected patterns. Alternatively, the Fourier power spectrum of the distorted reflected pattern is optically generated by use of collimated coherent light in a Fourier transform lens. After that, the necessary parameterization is extracted from the optical Fourier transform plane and correlated to previously recorded aesthetic human evaluation. A segmentation parameter is also used for correlation with a reference segmentation indicator.