摘要:
Method for packaging a photo detector integrated circuit (IC) and a pigment filter and resulting package are described. An encapsulated package (e.g., an epoxy-encapsulated package) that includes a first surface is provided. A filter layer is then coated directly onto the first surface. The filter layer provides optical filtering properties (e.g., a predetermined filtering profile) in addition to the filtering provided by the pigment filter.
摘要:
Method for packaging a photo detector integrated circuit (IC) and a pigment filter and resulting package are described. An encapsulated package (e.g., an epoxy-encapsulated package) that includes a first surface is provided. A filter layer is then coated directly onto the first surface. The filter layer provides optical filtering properties (e.g., a predetermined filtering profile) in addition to the filtering provided by the pigment filter.
摘要:
A color sensor for measuring light from a light source and the method for fabricating the color sensor. The color sensor includes a plurality of photodetectors, a plurality of primary color filters and a trim filter. Each primary color filter includes a layer of material between the light source and a corresponding one of the photodetectors. Each primary color filter preferentially transmits light in a corresponding band of wavelengths about a characteristic wavelength. The trim filter is located between the light source and the photodetectors and includes a layer of material that preferentially attenuates light at a first trim wavelength between two of the characteristic wavelengths. In one embodiment, the trim filter further preferentially attenuates light at a second trim wavelength, the first wavelength being less than one of the characteristic wavelengths and the second wavelength being greater than that characteristic wavelength.
摘要:
Method for packaging a photo detector integrated circuit (IC) and a pigment filter and resulting package are described. An encapsulated package (e.g., an epoxy-encapsulated package) that includes a first surface is provided. A filter layer is then coated directly onto the first surface. The filter layer provides optical filtering properties (e.g., a predetermined filtering profile) in addition to the filtering provided by the pigment filter.
摘要:
Method and apparatus for generating an output signal that represents light with a desired color profile. A first sensor is provided to receive light and based thereon to generate a first signal with a first color profile. A color sensor is also provided that receives light and based thereon generates a second signal with a second color profile. A signal generation mechanism that is coupled to the first sensor and the color sensor and receives the first signal with a first color profile, receives the second signal with a second color profile, and performs a predetermined operation on the first signal and the second signal to generate the output signal with the desired color profile.
摘要:
A light emitting device is disclosed herein. An embodiment of the light emitting device comprises a first plurality of light emitters comprising a first group and a second group, wherein the first group is connectable in series to the second group. A first driver is connected to the first group. A second driver is connectable to the second group. A first voltage comparator is coupled to the first driver, wherein the voltage comparator compares the voltage of the first driver to a predetermined voltage. The light emitting device is in a first state when the voltage of the first driver is below the predetermined voltage. The light emitting device is in a second state when the voltage of the first driver is greater than the predetermined voltage. The light emitting device is in the first state, the first group is connected in series with the second group to form a series circuit between the first driver and a reference voltage. When the light emitting device is in the second state, the first group is connected between the first driver and the reference voltage and the second group is connected between the second driver and the reference voltage.
摘要:
A method for determining the light intensity of a light signal in each of a plurality of spectral bands is disclosed and a method for fabricating a photodetector is also disclosed.
摘要:
In an embodiment, the invention provides a multi-color illuminating back light structure comprising a light guide, a reflector, at least one LED and a wavelength converter material. Micro-structures are formed on a first surface of the light guide. The reflector is attached to the first surface of the light guide. A wavelength converter material is deposited on a second surface of the light guide. At least one LED is optically coupled to at least one side of the light guide. A portion of light reflected from the micro-structures and the reflector is converted into light having at least one wavelength different from the wavelength of the reflected light. The light leaving the wavelength converter material comprises light with at least first and second wavelengths.
摘要:
A light emitting device is disclosed herein which includes a substrate, a housing, a light emitting die, and a cup with a reflective inner surface. The housing has an upper surface and at least one sidewall and is mounted on the upper surface of the substrate, thereby forming a cavity. The light emitting die is mounted on the upper surface of the substrate within the cavity. The cup is positioned within the cavity and is supported by the housing. The cup has a continuous sidewall with a reflective inner surface surrounding the light emitting die and a lowermost edge that is suspended above, detached and spaced away from the upper surface of the substrate.
摘要:
A method for calibrating an illumination system is disclosed herein. The illumination system comprises at least one light emitter and at least one color sensor. The method comprises emitting a first wavelength of light from the a light emitter and measuring the color of light emitted by the light emitter using the color sensors. A second wavelength of light is emitted from the a light emitter and the color of light emitted by the light emitter is measured using the color sensors. The shift in color space based on the measurements is calculated. At least one calibration matrix based on the shift in colors space is calculated.