Light-Mixing Sheet with Fillisters for Single-Source White Light
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Solution Overview
Problem
Conventional light assemblies with light-mixing functions are costly due to the need for multiple light sources and suffer from reduced illumination due to energy loss through transparent sheets.
Innovation Solution
A light assembly with a single light source and a light-mixing sheet featuring fillisters with mixed chemical compounds, such as fluorescent powder or quantum dots, that shift wavelengths to create a desired white light beam, eliminating the need for multiple light sources and reducing energy loss by using a reflective inner case and a light-mixing sheet made of glass, acrylic, or paper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light sources (red, green, blue) are used to create white light with high CRI, then the Color Rendering Index is improved, but the manufacturing cost increases significantly
Solution Approach 1:
The patent introduces a light-mixing sheet as an intermediary component between the blue light source and the final white light output. This sheet contains red, green, and blue light-mixing materials in specific ratios that convert the blue light into a balanced white light with high CRI, eliminating the need for three separate light sources while maintaining color quality
Solution Approach 2:
The patent changes the optical parameters by using a blue light source (wavelength 430-470nm) combined with a light-mixing sheet containing specific ratios of red (600-680nm), green (500-560nm), and blue (450-480nm) light-mixing materials. By adjusting the ratios of these light-mixing materials, the system achieves high CRI white light output without requiring multiple light sources
2Strength
If a transparent sheet is used to seal the receiving room opening, then the structural integrity is improved, but the illumination intensity is reduced due to energy loss
Solution Approach 1:
The patent combines the sealing function and the light-mixing function into a single light-mixing sheet. This sheet not only seals the receiving room opening like the traditional transparent sheet but also actively mixes and converts the blue light into high-quality white light, thereby maintaining structural integrity while improving rather than reducing illumination intensity
Solution Approach 2:
The patent extracts the light-mixing function from the traditional transparent sheet and integrates it directly into the sealing structure. By incorporating light-mixing materials into the sealing sheet itself, the system eliminates the separate transparent sheet that caused energy loss, achieving both sealing and light optimization in one component
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 solution reduces costs by using a single light source and maintains illumination intensity by eliminating the need for a transparent sheet, enhancing the light assembly's efficiency and cost-effectiveness.
Implementation Method 1
the mixed chemical compound shifts the wavelength from the blue light beam to a yellow light beam, a red light beam, an orange light beam or a green light beam
Implementation Method 2
at least one reflector is assembled on an inner periphery wall of the case, so that when the light beams from the light source are transmitted to the inner periphery wall of the case, the reflector on the inner periphery wall reflects the light beams toward the light-mixing sheet
Data Source
AI summary
A light assembly with light-mixing function includes a case having an assembling room defined therein and an assembling opening at a top thereof, the assembling opening communicating with the assembling room, a light-mixing sheet sealing the assembling opening of the case, the light-mixing sheet having at least one array set defined thereon, the array set having a plurality of fillisters uniformly defined on the light-mixing sheet, a volume of mixed chemical compound is entered into each fillister, at least one light source electrically set on a bottom of the assembling room. Under this arrangement, when the light assembly with light-mixing function is turned on, a plurality of light beams from the light source is caged in the mixed chemical compounds of the fillisters; and the mixed chemical compound shifts a wavelength of each of the light beams which are caged in the mixed chemical compounds.