Color sensor
First Claim
1. An apparatus for measuring one or more characteristics of a sample, the apparatus comprising:
- at least one light emitting diode configured to illuminate an area of the sample with first light, the first light including at least one band of ultraviolet light;
a detector configured to receive second light and to measure a spectral power distribution of the second light in a plurality of wavelength bands substantially spanning at least a visible range of light to form a measured spectral power distribution, the second light based on the first light that has interacted with the sample; and
an analyzer configured to determine the one or more characteristics of the sample using the measured spectral power distribution.
1 Assignment
0 Petitions
Accused Products
Abstract
Devices, systems, and methods for measuring the color of a sample are disclosed. The exemplary device may have one or more light emitting diodes for directing a beam of ultraviolet light onto the sample and may also have one or more light emitting diodes for directing a beam of visible light onto the sample. The exemplary device may have a component for controlling the timing and power of operation of each light emitting diode. The exemplary device may also have at least one light detector for receiving the beam of light reflected from or transmitted through the sample and measuring at least one wavelength band of the received light. The exemplary device may further have a measurement analyzer for determining the color of the sample based on the measured light. The color may be determined for a specified illuminator incorporating effects of fluorescence.
152 Citations
23 Claims
-
1. An apparatus for measuring one or more characteristics of a sample, the apparatus comprising:
-
at least one light emitting diode configured to illuminate an area of the sample with first light, the first light including at least one band of ultraviolet light; a detector configured to receive second light and to measure a spectral power distribution of the second light in a plurality of wavelength bands substantially spanning at least a visible range of light to form a measured spectral power distribution, the second light based on the first light that has interacted with the sample; and an analyzer configured to determine the one or more characteristics of the sample using the measured spectral power distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method for detecting one or more characteristics of a sample, comprising:
-
supplying power to at least one visible light emitting diode; directing a first beam of light from the at least one visible light emitting diode onto a sample; supplying power to at least one ultraviolet light emitting diode; directing a second beam of light from the at least one ultraviolet light emitting diode onto the sample; detecting visible light and ultraviolet light that have interacted with the sample, wherein the visible light and ultraviolet light that have interacted with the sample are based on the first and second beams of light; and determining the one or more characteristics of the sample based on the detected visible light and ultraviolet light. - View Dependent Claims (21, 22, 23)
-
Specification