Adjustable LED Daylight Source for Accurate Color Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional halogen lamps used in industrial visual color matching suffer from high power consumption, heat generation, and color inconsistency due to variations in glass color accuracy and lamp light output, while fluorescent lamps introduce color inaccuracy.
Innovation Solution
An adjustable LED lamp unit with high- and low-color temperature-rendering LEDs, controlled by a dimmer, is designed to replace halogen lamps, allowing for precise adjustment of light output to simulate daylight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If halogen lamps with blue glass filters are used to produce simulated daylight, then the desired color temperature is achieved, but power consumption and heat generation are high
Solution Approach 1:
The patent changes the fundamental operating parameters by replacing thermal incandescent halogen lamps with LED technology, operating at much lower temperatures and power consumption while achieving the same 6504K color temperature through different physical mechanisms (electroluminescence vs. incandescence with filtration)
Solution Approach 2:
The invention extracts and eliminates the blue glass filter component from the system by using LEDs that natively emit light at the desired 6504K color temperature, removing the need for color filtering and the associated power losses
2Illumination intensity
If halogen lamps with blue glass filters are used to produce simulated daylight, then the desired color temperature is achieved, but color consistency varies due to glass color accuracy and lamp output variation
Solution Approach 1:
The patent removes the blue glass filter from the optical path, eliminating the source of color inconsistency associated with glass manufacturing variations and aging, by using LEDs that directly emit the required spectrum
Solution Approach 2:
The invention replaces the mechanical/optical filtering system (halogen lamp + blue glass filter) with a solid-state LED emission system, eliminating mechanical wear, glass degradation, and filtration inconsistencies
3Use of energy by moving object
If fluorescent lamps are used to replace halogen lamps, then power consumption and heat generation are reduced, but color accuracy deteriorates
Solution Approach 1:
The patent replaces fluorescent lamp technology with LED technology, achieving both low power consumption and high color accuracy through solid-state electroluminescence, superior to fluorescent phosphor conversion methods
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The LED lamp unit provides efficient, accurate, and consistent simulated daylight with reduced power consumption and heat, overcoming the deficiencies of halogen and fluorescent sources.
Implementation Method 1
The lamp unit can have a plurality of high-color temperature-rendering LEDs and a plurality of low-color temperature-rendering LEDS mounted to one or more lamp panels
Implementation Method 2
the low-color temperature-rendering LEDs produce light at a color temperature of 3000-3200K
Data Source
AI summary
A lamp unit for a color matching apparatus can replace a conventional halogen lamp and blue filter with an LED lamp unit having a plurality of high-temperature output LEDs and a plurality of low-color temperature output LEDs, where at least the light output of the low-color temperature-rendering LEDs is adjustable to alter the resulting output color temperature.