[go: up one dir, main page]

Srividya et al., 2014 - Google Patents

White light source towards spectrum tunable lighting—A review

Srividya et al., 2014

View PDF
Document ID
3216221286530266083
Author
Srividya R
Kurian C
Publication year
Publication venue
2014 International Conference on Advances in Energy Conversion Technologies (ICAECT)

External Links

Snippet

CIE standard illuminants are important for testing, calibration, printing quality testing, spices color testing and other photometric and calorimetric applications. Currently, fluorescent light sources represent these illuminants giving fixed and broad illumination spectra. Installation …
Continue reading at www.researchgate.net (PDF) (other versions)

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/08—Circuit arrangements not adapted to a particular application
    • H05B33/0803—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials
    • H05B33/0842—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control
    • H05B33/0857—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light
    • H05B33/086—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light involving set point control means
    • H05B33/0863—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light involving set point control means by user interfaces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/08—Circuit arrangements not adapted to a particular application
    • H05B33/0803—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials
    • H05B33/0842—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control
    • H05B33/0857—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light
    • H05B33/0866—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light involving load characteristic sensing means
    • H05B33/0869—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light involving load characteristic sensing means optical sensing means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/08—Circuit arrangements not adapted to a particular application
    • H05B33/0803—Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials
    • H05B33/0806—Structural details of the circuit
    • H05B33/0809—Structural details of the circuit in the conversion stage
    • H05B33/0815—Structural details of the circuit in the conversion stage with a controlled switching regulator
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B37/00—Circuit arrangements for electric light sources in general
    • H05B37/02—Controlling

Similar Documents

Publication Publication Date Title
US7972028B2 (en) System, method and tool for optimizing generation of high CRI white light, and an optimized combination of light emitting diodes
Muthu et al. Red, green, and blue LED based white light generation: issues and control
US6630801B2 (en) Method and apparatus for sensing the color point of an RGB LED white luminary using photodiodes
TWI498047B (en) Method and apparatus for controlling and measuring aspects of time-varying combined light
US7626345B2 (en) LED assembly, and a process for manufacturing the LED assembly
US10057952B2 (en) Lighting apparatus using a non-linear current sensor and methods of operation thereof
US8018135B2 (en) Lighting device and method of making
US8829822B2 (en) LED-based light source having decorative and illumination functions
US9867254B2 (en) Solid state lighting fixture with incandescent dimming characteristics
JP6581500B2 (en) Apparatus, system and method for a multi-channel white light illumination source
US20100259182A1 (en) Light source intensity control system and method
US9756694B2 (en) Analog circuit for color change dimming
CN101491160A (en) Light source and method for optimising illumination characteristics thereof
US20060000963A1 (en) Light source calibration
US20160334278A1 (en) Systems and methods for testing and characterizing led lighting devices
Ohno Optical metrology for LEDs and solid state lighting
Srividya et al. White light source towards spectrum tunable lighting—A review
Protzman et al. LEDs for general illumination: The state of the science
Das et al. Low cost, high color rendition, CCT variable lighting system based on WGB LED
US20140210355A1 (en) Methods, circuits and systems for adjusting chromaticity of solid state lighting
Yang Implementation of a colorful RGB-LED light source with an 8-bit microcontroller
JP2022530708A (en) Warm color dimming LED circuit
US7220017B2 (en) Method and system of controlling bicolor luminary system
RavindraKumar et al. A Tunable LED Daylight Luminaire for Textile and Printing Light Booth Application with Optimum LEDs
US12464614B2 (en) System and method for producing high quality temperature adjustable white light