Abstract:
The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such a light-emitting diode.
Abstract:
A hand held spectrometer is used to illuminate the object and measure the one or more spectra. The spectral data of the object can be used to determine one or more attributes of the object. In many embodiments, the spectrometer is coupled to a database of spectral information that can be used to determine the attributes of the object. The spectrometer system may comprise a hand held communication device coupled to a spectrometer, in which the user can input and receive data related to the measured object with the hand held communication device. The embodiments disclosed herein allow many users to share object data with many people, in order to provide many people with actionable intelligence in response to spectral data.
Abstract:
전역 반사 스펙트럼 획득 방법 및 그 장치가 개시된다. 전역 반사 스펙트럼 획득 방법은 (a) 전역 반사 스펙트럼이 공지된 기준체를 촬영한 영상에서 상기 공지된 전역 반사 스펙트럼을 이용하여 광원 스펙트럼 특성과 카메라 응답 특성 조합값을 계산하는 단계; (b) 정해진 조명 환경에 따라 빛이 조사된 객체를 촬영하여 영상을 획득하는 단계; 및 (c) 상기 영상에서 상기 광원 스펙트럼 특성과 카메라 응답 특성 조합값을 이용하여 상기 객체에 대한 전역 반사 스펙트럼을 획득하는 단계를 포함한다.
Abstract:
A modular device (12) includes base (14) and color sensing (16) portions. The color sensing portion has a face, a controlled light source offset from the face to define an interior, the face configured to engage a target surface about a perimeter of the device housing wherein ambient light is restricted from entering. A color sensor receives light reflected from the target surface and generates output signals representative of a surface color. The base portion communicates with the color sensor and a user device (18) having a hosted program (20) which generates a user interface enabling users to provide control input for the color sensor and receives the output signals from the color sensing device and displays a first image of the detected color, and a second image of a user-selected color beside the first image. Color data values are displayed corresponding to the difference between displayed colors.
Abstract:
An optical assembly for use with a spectrophotometer. The optical assembly may comprise an illumination source, a detection sensor, a monitor sensor, and an optical piece having a first side adapted to face a sample. The optical piece may define an illumination channel extending from the illumination source toward the first side. The optical piece may also define a detection channel extending from the first side toward the detection sensor, hi addition, the optical piece may define a monitor channel extending from the illumination channel toward the monitor sensor. Also, a light emitting diode (LED) assembly for use with an optical measurement device. The LED assembly may comprise a substrate having a top surface and a bottom surface and a plurality of LED dies positioned on the substrate to emit light in a first direction normal to the bottom surface of the substrate. The LED assembly may also comprise a plurality of leads in electrical contact with the plurality of LED dies. The plurality of leads may be positioned on the bottom surface of the substrate, and may be configured to surface-mount to a board.
Abstract:
A color tag comprises a substrate having a visually detectable tint associated with a portion thereof and a code which reflects color information relating to individual color parameters of said visually detectable tint, as well as identity information that specifically identifies said color tag itself. Identifiable and serialized tags have integrated technology that facilitates the tracing and evaluation of any individual tag at any point along a manufacturing and transportation process.