Abstract:
CIE 표준광을 발광하는 표준광 LED를 이용함으로써, 대상물의 색상 차이 등에 의해 측정오류가 발생되는 것을 저감하는 표준광 LED를 이용한 가시광선 투과율 측정장치를 개시한다. 본 발명은 전원이 공급되는 베이스 및 상기 베이스에 전기적으로 연결되어 자연광에 가까운 CIE 표준광을 발광할 수 있도록 상기 베이스에 설치되고 레드, 그린, 블루 삼색이 가변혼합되어 CIE 표준광을 발광하는 표준광 LED를 개발한다. 그리고 상기 표준광 LED가 장착되는 발광수단에서 발광되는 CIE 표준광과 CIE 표준광을 수광하는 수광수단을 이용하여 차량 등의 틴팅 필름의 투과율을 측정함으로써, 측정하고자 하는 틴팅 필름의 색상이 변경되더라도, 가시광선투과율이 변경되는 것을 방지할 수 있도록 한 것이다. 즉, 색상에 따른 가시광선투과율 오차를 방지할 수 있도록 한 것이다. 또한, 수광수단에 구비된 데이터 입력패널의 총 12개의 키 중에서 1 - 6까지의 키에는 A-R까지의 영어문자를 순서대로 3개씩 배치하고, 7 - 0까지의 키에는 S - Z까지의 영어문자를 순서대로 2개씩 배치하여 알파벳문자의 입력이 신속하고 용이하게 이루어지게 된다.
Abstract:
Featured are a device and method for the detection of counterfeit pharmaceuticals and/or packaging therefore. Counterfeit pharmaceuticals are detected by visual inspection upon exposing a suspected counterfeit pharmaceutical to one or more light sources having different wavelengths, and observing the differences in color and/or brightness between the suspected counterfeit and a genuine pharmaceutical/packaging. In further embodiments, a image acquisition device acquires an image showing color and/or other visual effect(s) brightness of the suspect counterfeit and this image is compared to an image of a authentic pharmaceutical/packaging.
Abstract:
A system and method for color measurements or other spectral measurements of a material are provided. An illuminating device (102, 202, 302, 602, 702) generates light for illuminating a sample (106, 206, 306, 606, 706) of material. A detector (108, 208, 308, 608, 708) detects light that has interacted with the sample (106, 206, 306, 606, 706) and provides a measurement of the light that has interacted with the sample (106, 206, 306, 606, 706). A controller (114, 214, 314, 614, 714) adjusts a duty cycle of the illuminating device (102, 202, 302, 602, 702) to control the illumination of the sample (106, 206, 306, 606, 706). The measurement could be used by an analyzer (112, 212, 312, 612, 712) to determine a spectral characteristic (such as a color) of the sample (106, 206, 306, 606, 706). The determination of the spectral characteristic could be done without using any measurement of light that has not interacted with the sample (106, 206, 306, 606, 706). One or multiple light emitting diodes (LEDs) could be used to illuminate the sample (106, 206, 306, 606, 706), and the duty cycle of individual LEDs or groups of LEDs could be adjusted.
Abstract:
Die Erfindung richtet sich auf ein Verfahren sowie eine elektronische Schaltung zur Verarbeitung von Signalen die als solche indikativ sind für Merkmale oder die Charakteristik der spektralen Verteilung von Licht das für eine spektrometrische Messung im Zusammenspiel mit einer LED-Lichtquelle bereitgestellt wird. Der Erfindung liegt die Aufgabe zugrunde, Lösungen zu schaffen durch welche es möglich wird, die Aussagefähigkeit spektrometrischer Messungen zu erhöhen. Diese Aufgabe wird erfindungsgemäss gelöst, indem auf Basis einer Referenzmessung und mindestens zweier weiterer Messungen an derselben Referenz eine Referenzkurve für die spektrale Emission berechnet wird, die dann bei der Durchführung von Messungen an nahezu beliebigen Objekten als Referenz verwendet wird. Diese Kurve wird so bestimmt, dass sie einer Kurve der spektralen Emission zu einer Temperatur entspricht, die ausserhalb oder weit ausserhalb des Temperaturbereichs liegt, in dem die Temperaturen der LED bei den Messungen tatsächlich liegen.
Abstract:
A color identifying display system having a lighting surface (111, 211, 501, 611) having an alterable apparent surface color, a color capture device (105, 205, 317, 507, 603) to capture a color of an object (109, 203, 305, 503) placed within a detection area, and a processor (113). The lighting surface (111, 211, 501, 611) and the color capture device (105, 205, 317, 507, 603) are coupled to the processor (113). The processor (113) analyzes the captured color to determine a prominent color of the object (109, 203, 305, 503) and to control a color of the lighting surface (111, 211, 501, 611) based on the determined prominent color. The color of the lighting surface (111, 211, 501, 611) may be adjusted to match the prominent color, complement the prominent color, or be analogous to the prominent color.
Abstract:
The invention relates to an illumination device (1) with a number of light emitters, for example LEDs (L1, L2, L3, L4) of individual emission spectra. Sensor units (D1, D2, D3, D4) can produce a vector of measurement signals (S1, S2, S3, S4) that represent the light output of a single active light emitter. Based on a linear relation obtained during a calibration procedure, a characteristic value of the light output of that light emitter (L1, L2, L3, L4) is then calculated from the measurement vector, wherein said characteristic value is based on the coefficients of a decomposition of the individual emission spectrum into basis functions.
Abstract:
A color identifying display system having a lighting surface (111, 211, 501, 611) having an alterable apparent surface color, a color capture device (105, 205, 317, 507, 603) to capture a color of an object (109, 203, 305, 503) placed within a detection area, and a processor (113). The lighting surface (111, 211, 501, 611) and the color capture device (105, 205, 317, 507, 603) are coupled to the processor (113). The processor (113) analyzes the captured color to determine a prominent color of the object (109, 203, 305, 503) and to control a color of the lighting surface (111, 211, 501, 611) based on the determined prominent color. The color of the lighting surface (111, 211, 501, 611) may be adjusted to match the prominent color, complement the prominent color, or be analogous to the prominent color.
Abstract:
The invention concerns a system for measuring the colorimeter of objects comprising an illuminating source (SO), a detecting device (CA) supplying electric signals representing the image of the illuminated tooth/teeth. The illuminating source comprises at least three light-emitting diodes (DL1 to DL3) emitting light rays of different and sequentially controlled wavelengths. A central unit (UC) receives, from the detecting device (CA), each time the object is illuminated, the image of the light reflected and received by the detecting device. The central unit computes, for each image, the level of each colour and determines, for different points, standard colorimetric coordinates. The invention is useful for measuring the colour of teeth.
Abstract:
A color measurement system includes a hand held color measurement instrument, which may be provided with a, wireless interface to a computer The color measurement system includes a scanning guide for holding the Band held color measurement trùment in proper alignment with a color target.- The scanning guide includes a calibration reference to allow convenient calibration of the hand-held color measurement instrument. The hand-held color instrumentt includes an illumination ring to provide visual feedback to the user. The color of the illumination' ring changes in order to display a color imilar to that being read by the hand-held color measur ment instrument. Color management profiling of the hand field color measurement instrurn nt illumination ring improves the color rendition capability of the illumination ring.
Abstract:
A method for measuring a flexible colored material during a manufacturing process. The method includes automatically diverting the flexible material from a process path, placing the flexible material in contact with a rotatable drum, and measuring spectral data of the flexible material as the drum rotates. Measuring the spectral data includes scanning the flexible material with a line scanning detector having an array of detectors. The method also includes processing scan information to form a single image of the flexible material.