Stage Lamp Lighting Device Gaussian Beam Mixing
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Solution Overview
Problem
Existing stage lamp lighting devices fail to meet user requirements for center luminance of the light spot at a specific distance due to uniform light spots resulting from the mixing of different colors, which leads to decreased center luminance.
Innovation Solution
A lighting device for a stage lamp that includes a light-emitting device emitting monochromatic lights of at least two colors, a light combining device to combine these lights, and a light mixing device with a diffusion sheet featuring microstructures to convert the light into a Gaussian beam, enhancing center luminance by creating a non-uniform light spot with a brighter center and darker edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a double fly-eye lens is used to mix light of different colors, then the light spot uniformity is improved, but the center luminance decreases
Solution Approach 1:
The patent applies local quality by creating different optical properties in different regions of the light mixing system. The diffusion sheet with microstructures is positioned specifically to affect only certain regions of the light beam, creating a Gaussian distribution where the center has different luminance characteristics than the edges. This resolves the contradiction by allowing uniform mixing in some areas while maintaining high center luminance through the structured diffusion approach.
Solution Approach 2:
The patent changes the optical parameters of the light beam by using a diffusion sheet with specific microstructure characteristics (size, shape, distribution). By adjusting these parameters, the system transforms the light distribution from uniform to Gaussian, thereby increasing center luminance while maintaining acceptable uniformity through controlled scattering parameters.
2Stability of the object's composition
If light is mixed to achieve uniform distribution, then color mixing quality is improved, but center luminance at specific distance is reduced
Solution Approach 1:
The patent segments the light mixing function into multiple components: the double fly-eye lens handles initial color mixing, while the diffusion sheet with microstructures performs secondary mixing and spatial redistribution. This segmentation allows each component to optimize for its specific function, achieving color uniformity while preserving center luminance through the staged mixing approach.
Solution Approach 2:
The diffusion sheet acts as an intermediary element between the double fly-eye lens and the final light output. It receives the pre-mixed light from the fly-eye lens and performs additional controlled scattering, mediating the transition from uniform to Gaussian distribution while maintaining color mixing quality achieved by the previous stage.
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 achieves a light spot with higher center luminance, satisfying user requirements by converting the light into a Gaussian beam with a brighter center and darker edges, improving the overall luminance distribution.
Implementation Method 1
a light mixing device configured to mix the monochromatic lights of different colors in the beam of light emitted from the light combining device, and convert the beam of light into a Gaussian beam, wherein the light mixing device comprises a light incidence surface facing the light combining device and a light emission surface
Data Source
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AI summary
A stage lamp lighting device, comprising: a light emitting device (20) capable of emitting single-colored light beams in at least two colors; a light combining device (21) capable of combining the single-colored light beams in the at least two colors; and a light mixing device (22) mixing emitted single-colored light beams having different colors by the light combining device (21) and converting the light beams into a Gaussian beam. The light combining device (21) and light mixing device (22) are sequentially arranged on a light outgoing path of the light emitting device (20). An illuminated area by the Gaussian beam has high luminance at a center thereof, thus meeting a user requirement for the center luminance at a specific distance.