公开(公告)号：US06525819B1

公开(公告)日：2003-02-25

申请号：US09365438

申请日：1999-08-02

Applicant: S. Brett Delawter ,  Gregg A. Wagner ,  Gary Emerson ,  Brian Franklin

Inventor： S. Brett Delawter ,  Gregg A. Wagner ,  Gary Emerson ,  Brian Franklin

IPC: G01J350

CPC classification number: A61B5/0088 ,  A61B5/742 ,  A61B2560/0233 ,  G01J3/02 ,  G01J3/0256 ,  G01J3/0264 ,  G01J3/0272 ,  G01J3/28 ,  G01J3/46 ,  G01J3/463 ,  G01J3/50 ,  G01J3/501 ,  G01J3/508 ,  G01J3/524

Abstract: The invention is a colorimeter for dental applications comprising a hand-held probe, similar in size to a dental drill, attached by an electrical cable to a small self-contained display module. The calorimeter provides the capability for measuring the colors of a number points along a line on the surface of an object such as a tooth. A measurement is made while placing the tip of the probe against, or in close proximity to, the surface of the object. The display module to which probe attaches contains a microprocessor and provides a control, display and data interface to the operator. The display module can be adapted for fastening to the wrist of the operator thereby leaving both hands free to manipulate the probe and other tools. The calorimeter is particularly well suited for measuring the color of teeth in a dentist's office in preparation for making dental prostheses which accurately match the color of natural teeth. The colorimeter generates from a single measurement an array of color data points measured along a line on the surface of an object. From those data points, the processor can perform statistical analysis yielding a single color value, generate and display a color profile along a surface, compare measured values with a preloaded table of values, or upload color data to a remote location for laboratory or manufacturing purposes. The colorimeter can also use variations in the color values measured along a line to identify boundaries of areas on a surface. For example, the color profile can be used to identify the gum line on a tooth. The probe comprises multiple light emitting diodes (LEDs) for successively emitting light of different colors toward a surface, a linear photosensor array for receiving light reflected from the surface, and a lens for directing light from the target to the array, all contained within the probe itself. The calorimeter may also comprise a cradle for storing the probe and display module when not in use. The cradle may provide a battery charger, calibration references, and data links for uploading or downloading data from a remote location.

公开(公告)号：US20030007154A1

公开(公告)日：2003-01-09

申请号：US09888791

申请日：2001-06-25

Applicant: Xerox Corporation

Inventor： Jagdish C. Tandon ,  Lingappa K. Mestha

IPC: G01J003/51

CPC classification number: G01J3/51 ,  G01J3/501 ,  G01J3/513 ,  G01J3/52 ,  G01J3/524 ,  G03G15/01 ,  G03G2215/00063

Abstract: A low cost yet higher speed color spectrophotometer, especially suitable for on-line color printer color control systems, wherein multiple test patches of different colors may be simultaneously illuminated and substantially simultaneously discretely color analyzed. Reduced numbers of test print sheets, with multiple sets of multiple small adjacent different color test patches, may be used. Reflected images of the multiple different color test patches may be simultaneously focused on different areas of a photodetector chip to expose differently color responsive sets of multiple photo-sites to provide plural discrete color signals for each different color test patch image.

公开(公告)号：US06495964B1

公开(公告)日：2002-12-17

申请号：US09749154

申请日：2000-12-27

Applicant: Subramanian Muthu ,  Chin Chang

Inventor： Subramanian Muthu ,  Chin Chang

IPC: H05B3702

CPC classification number: G01J1/32 ,  F21V9/40 ,  F21V23/0442 ,  F21W2111/02 ,  F21Y2115/10 ,  G01J3/46 ,  G01J3/463 ,  G01J3/465 ,  G01J3/50 ,  G01J3/501 ,  G02B6/003 ,  G08G1/095 ,  H05B33/0803 ,  H05B33/0818 ,  H05B33/086 ,  H05B33/0863 ,  H05B33/0869

Abstract: The combined light output (chromaticity) of a white light emitting LED luminaire is electronically controlled based on measurements by a single photodiode arranged to measure the light outputs of at least a plurality of the LEDs in the array. This is accomplished by measuring the light output of the LEDs in each color separately in a sequence of time pulses. For an array of red, green, and blue LEDs there are three time pulses in a measuring sequence. During each time pulse, the current for the color being measured is turned off. The response time of a typical photodiode is extremely short, so the measuring sequence can be performed in a sufficiently short time that an-observer will not detect it (e.g. 10 ms). Measured light outputs for the colors are compared to desired outputs, which may be set by user controls, and changes to the power supply for the color blocks are made as necessary. Chromaticity is thus automatically controlled without regard to the factors which may cause it to change. The user inputs permit varying the desired chromaticity to either warm white (more red output) or cool white (more blue output).

Abstract translation: 基于被布置为测量阵列中的至少多个LED的光输出的单个光电二极管的测量，电子控制白光发射LED灯具的组合光输出（色度）。 这是通过以时间脉冲序列分别测量每种颜色的LED的光输出来实现的。 对于红色，绿色和蓝色LED阵列，测量顺序中有三个时间脉冲。 在每个时间脉冲期间，被测量的颜色的电流被关闭。 典型的光电二极管的响应时间非常短，所以可以在足够短的时间内执行测量序列，观察者将不会检测它（例如10ms）。 将颜色的测量光输出与可由用户控制设置的所需输出进行比较，并根据需要进行颜色块的电源更改。 因此，色度自动控制，而不考虑可能导致其改变的因素。 用户输入允许将所需色度改变为暖白色（更多红色输出）或冷白色（更蓝色输出）。

公开(公告)号：US20020159066A1

公开(公告)日：2002-10-31

申请号：US09844389

申请日：2001-04-27

Applicant: International Business Machines Corporation

Inventor： Viktors Berstis

IPC: G01J003/50

CPC classification number: G01J3/50 ,  G01J3/0272 ,  G01J3/10 ,  G01J3/28 ,  G01J3/501 ,  G01J3/513

Abstract: A handheld, pen-like colorimeter for measuring the color of an object is provided. The calorimeter comprises several light emitters, each with distinct color spectra, wherein the emission of each color is modulated at a specific frequency. These light emitters may be Ligh Emitting Diodes (LEDs) and/or lasers. The calorimeter also contains at least one light sensor which samples light reflected from an object illuminated by the light emitters. The rate of sampling is at least twice the modulation frequency of the emitted light. A microprocessor computes the fourier transform of the intensity of the reflected light over time, wherein the fourier transform provides the light intensity at each possible modulation frequency and determines the relative contribution of the reflected light from each light emitter, as well as the contribution of ambient light. The modulation frequency of the light emitters is adjusted to account for the modulation frequency of artificial, ambient light. A color value based on the fourier transform of the reflected light is calculated and then mapped to a list of color values from which a color name is selected and presented to the user.

Abstract translation: 提供了一种用于测量物体颜色的手持式笔式色度计。 量热计包括几个发光体，每个具有不同的色谱，其中每个颜色的发射以特定频率被调制。 这些发光体可以是发光二极管（LED）和/或激光器。 热量计还包含至少一个光传感器，其对从由发光体照射的物体反射的光进行采样。 采样速率至少是发射光的调制频率的两倍。 微处理器计算随时间的反射光强度的傅里叶变换，其中傅里叶变换在每个可能的调制频率处提供光强度，并确定来自每个发光体的反射光的相对贡献以及环境的贡献 光。 调整发光体的调制频率以考虑人造环境光的调制频率。 计算基于反射光的傅里叶变换的颜色值，然后映射到选择颜色名称并呈现给用户的颜色值的列表。

公开(公告)号：US06456733B1

公开(公告)日：2002-09-24

申请号：US09240995

申请日：1999-02-01

Applicant: Cyuuji Miyauchi ,  Kazuo Aihara

Inventor： Cyuuji Miyauchi ,  Kazuo Aihara

IPC: G06K900

CPC classification number: G01J3/46 ,  G01J3/501

Abstract: A printed image inspection apparatus comprises an image reading section that irradiates a printed image being inspected with two types of light having different dominant wavelengths and reads images from the reflections of the two types of light, a judgment section that compares the images read by the image reading section with reference images stored in advance and judges the agreement between both, and an operation control section that control the operation of the image reading section and the judgment section. The image reading section comprises a first light source outputting blue light having a low reflectance with respect to yellow, magenta and black inks, and a second light source outputting yellow light having a low reflectance with respect to cyan, magenta and black inks.

Abstract translation: 印刷图像检查装置包括：图像读取部，其利用具有不同主波长的两种类型的光照射被检查的打印图像，并且从两种类型的光的反射中读取图像;判断部，其比较由图像读取的图像 读取部分，其具有预先存储的参考图像并且判断两者之间的一致性，以及控制图像读取部分和判断部分的操作的操作控制部分。 图像读取部分包括输出相对于黄色，品红色和黑色墨水具有低反射率的蓝色光的第一光源和输出相对于青色，品红色和黑色墨水具有低反射率的黄色光的第二光源。

公开(公告)号：US20020097454A1

公开(公告)日：2002-07-25

申请号：US09768662

申请日：2001-01-23

Inventor： Algird M. Gudaitis

IPC: H04N001/46

CPC classification number: G01J3/51 ,  G01J3/501 ,  G01J3/513 ,  H04N1/6033

Abstract: A method and apparatus for color measurement using a physically distributed multiplicity of sensors. Broad band illumination is provided to irradiate a test pattern. The sensors are used to measure color characteristics of discrete areas of a region of the pattern that has an intended single color by providing the pattern and sensors arrayed in a substantially matching geometric configuration.

Abstract translation: 一种使用物理分布的多个传感器进行颜色测量的方法和装置。 提供宽带照明以照射测试图案。 这些传感器用于通过提供以基本匹配的几何构型排列的图案和传感器来测量具有预期单一颜色的图案区域的离散区域的颜色特性。

公开(公告)号：US20020071124A1

公开(公告)日：2002-06-13

申请号：US09736110

申请日：2000-12-13

Inventor： Peter Schwarz

IPC: G01N021/55

CPC classification number: G01J3/02 ,  G01J3/027 ,  G01J3/0272 ,  G01J3/0286 ,  G01J3/10 ,  G01J3/50 ,  G01J3/501 ,  G01J3/502 ,  G01J3/51 ,  G01N21/251 ,  G01N21/57

Abstract: The present invention relates to a device and a method for determining the quality of surfaces. An illuminating means of a first optical means radiates light at a predetermined angle onto the measurement surface. A second optical means is likewise aligned at a predetermined angle to the measurement surface and a photosensor receives the light reflected from said measurement surface and converts same into an electrical measurement signal which is characteristic of the reflected light. A control and evaluation means comprising a processor and memory means controls the measurement sequence and evaluates the measurement results, which are emitted via an output means. The illuminating means comprises at least one light-emitting diode. The light emitted by said illuminating means is configured such that its spectral characteristic comprises at least blue, green and red spectral components in the visible range of the spectrum. A filter means is provided in the path of radiation between the light source and the photosensor. The evaluating means evaluates the reflected light and derives therefrom a parameter which characterizes the surface.

Abstract translation: 本发明涉及一种用于确定表面质量的装置和方法。 第一光学装置的照明装置以预定角度将光辐射到测量表面上。 第二光学装置同样以与测量表面成预定角度对准，并且光电传感器接收从所述测量表面反射的光并将其转换成作为反射光特征的电测量信号。 包括处理器和存储器装置的控制和评估装置控制测量序列并评估通过输出装置发射的测量结果。 照明装置包括至少一个发光二极管。 由所述照明装置发射的光被配置为使得其光谱特性在光谱的可见范围内包括至少蓝色，绿色和红色光谱分量。 在光源和光传感器之间的辐射路径中设置滤光器装置。 评估装置评估反射光并从中导出表征表面的参数。

公开(公告)号：US06404500B1

公开(公告)日：2002-06-11

申请号：US09236827

申请日：1999-01-25

Applicant: David J. Schneider ,  Gary L Claypoole ,  Johnny Michael Sandlin

Inventor： David J. Schneider ,  Gary L Claypoole ,  Johnny Michael Sandlin

IPC: G01N2159

CPC classification number: G01J3/46 ,  G01J3/0272 ,  G01J3/501 ,  G01N21/274

Abstract: The disclosure of this invention relates to calorimeters and a process for operating a colorimeter. The colorimeter of the disclosure is controlled by a microprocessor which evaluates a predetermined radiation absorption curve for each sample. This is to be contrasted with the prior art wherein the test on a given sample evaluates only radiation absorption concentration points which are evaluated by the microprocessor. The colorimeter gives more accurate readings as a result of the fact that an absorption curve and its parameters are evaluated for each sample. The calorimeter uses multiple LEDs as a radiation source. The microprocessor further controls other functions of the colorimeter. A separate microprocessor may be used to control these other functions. The calorimeter and process of this invention are also useful in the analysis of samples for turbidity.

Abstract translation: 本发明的公开涉及量热计和操作色度计的方法。 本公开的比色计由微处理器控制，微处理器评估每个样品的预定辐射吸收曲线。 这与现有技术形成对照，其中给定样品上的测试仅评估由微处理器评估的辐射吸收浓度点。 由于对每个样品评估吸收曲线及其参数的事实，色度计给出更准确的读数。 量热仪使用多个LED作为辐射源。 微处理器进一步控制色度计的其他功能。 可以使用单独的微处理器来控制这些其他功能。 本发明的量热计和方法在分析浊度样品时也是有用的。

公开(公告)号：US20020005954A1

公开(公告)日：2002-01-17

申请号：US09834241

申请日：2001-04-12

Inventor： Uwe Sperling

IPC: G01N021/47

CPC classification number: G01J3/02 ,  G01B5/0004 ,  G01B11/306 ,  G01J3/0291 ,  G01J3/50 ,  G01J3/501 ,  G01J3/504 ,  G01N21/474

Abstract: The present invention relates to a device for measuring transmission and reflection properties of objects and surfaces and a method for operating said device. The device is equipped with a housing, an optical measuring base unit and preferably a source of radiation for emitting radiation at a predetermined angle onto a measurement surface, as well as a detecting means for detecting the radiation reflected from said measurement surface. An elastic retaining means serves to elastically support the optical measuring base unit in the housing such that a touchdown surface for setting down said optical measuring base unit on the measurement surface is disposed external the housing and assumes a predetermined stressed position relative the housing in the unpositioned state.

Abstract translation: 本发明涉及用于测量物体和表面的透射和反射特性的装置以及用于操作所述装置的方法。 该装置配备有壳体，光学测量基座单元，并且优选地是以预定角度发射到测量表面上的辐射源，以及用于检测从所述测量表面反射的辐射的检测装置。 弹性保持装置用于弹性地支撑壳体中的光学测量基座单元，使得用于将测量表面上的所述光学测量基座单元放下的接触表面设置在外壳的外部，并且相对于未定位的壳体呈现预定的应力位置 州。

公开(公告)号：US06278521B1

公开(公告)日：2001-08-21

申请号：US09201036

申请日：1998-11-30

Applicant: Joseph Jablonski ,  James Leland ,  Richard Montminy ,  Kevin Carr ,  Arthur Springsteen ,  David Griffiths ,  Angelo Arecchi

Inventor： Joseph Jablonski ,  James Leland ,  Richard Montminy ,  Kevin Carr ,  Arthur Springsteen ,  David Griffiths ,  Angelo Arecchi

IPC: G01J351

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/4406 ,  G01J3/501 ,  G01J3/502 ,  G01J3/51 ,  G01J3/524 ,  G01J2003/468

Abstract: A novel modular bench-top bispectral fluorescence colorimeter and technique embodying in self-contained housing excitation and emission monochromator, preferably with fiber light guide interconnections, and processing for accurately determining the bispectral radiance factors defining the true color of fluorescent materials and the like, and enabling a variety of data presentation formats descriptive thereof.

Abstract translation: 一种新颖的模块化台式双谱荧光色度计和技术，其体现在独立的壳体激发和发射单色仪中，优选地具有纤维光导互连，以及用于精确地确定定义荧光材料的真实颜色等的双谱辐射系数的处理，以及 实现了描述其的各种数据呈现格式。