Abstract:
A colorimeter capable of calibrating color monitors, is provided by a photometric array of photodetectors (38) and opticlal filter pairs (50). The filters include long-pass, edge filters which cover overlapping regions at t he upper end of the visible spectrum and a filter which covers the entire visib le spectrum. The outputs of the photodetectors are digitally synthesized to provide a response which mimics the response established by the Commission Internationale de l'Eclairage (CIE) xyz (bar) functions almost perfectly. Th e response which is mimicked may be represented by the CIE color matching functions. The pairs and the associated components are mounted on a printed circuit board (32) captured in a clamshell housing and having an array of apertures which define angularly constrained fields of view of a surface fro m which the light emanates.
Abstract:
A system for calibrating a spectrophotometer includes a spectrophotometer (10) including a network communication interface (12), operating in a plurality of modes and producing and implementing diagnostic information. A network communicates with the spectrophotometer (10) via the network communication interface (12). A remote processor (22) is enabled to communicate with the spectrophotometer (10) directly via the network communication interface (12). Alternatively, a spectrophotometer having a thin client is disclosed that can operate independently of a local PC.
Abstract:
A method and apparatus for providing an integrating sphere for use as a measuring device is described. More specifically, the integrating sphere includes a generally spherical shell and a liner disposed within said generally spherical shell, wherein the liner is composed of a sintered polymer. In one embodiment, the liner is made up of a pre-formed polytetrafluoroethylene (PTFE) shell.
Abstract:
Systems, methodologies, media, and other embodiments associated with color measuring are described. One exemplary system embodiment includes a spectrophotometer (100), one or more light sources (110) for illuminating an interior of the spectrophotometer (100), and a digital camera (105) configured at a port (125) of the spectrophotometer and being configured to measure light components from a sample (115). In the present invention, segmentation logic is provided for the spectrophotometer that is configured to employ computational image segmentation to characterize specular reflection from a sample and to characterize a selected patch or portion from the test sample, such as a selected color in a multicolor pattern. In accordance with the present invention, the spectrophotometer (100) and the included digital camera (105) may be color-characterized in situ.
Abstract:
A method and apparatus for providing an integrating sphere for use as a measuring device is described. More specifically, the integrating sphere includes a generally spherical shell and a liner disposed within said generally spherical shell, wherein the liner is composed of a sintered polymer. In one embodiment, the liner is made up of a pre-formed polytetrafluoroethylene (PTFE) shell.
Abstract:
A colorimeter capable of calibrating color monitors, is provided by a photometric array of photodetectors (38) and opticlal filter pairs (50). The filters include long-pass, edge filters which cover overlapping regions at the upper end of the visible spectrum and a filter which covers the entire visible spectrum. The outputs of the photodetectors are digitally synthesized to provide a response which mimics the response established by the Commission Internationale de l'Eclairage (CIE) xyz (bar) functions almost perfectly. The response which is mimicked may be represented by the CIE color matching functions. The pairs and the associated components are mounted on a printed circuit board (32) captured in a clamshell housing and having an array of apertures which define angularly constrained fields of view of a surface from which the light emanates.