Light Emitting Module With Axial Spacing for Chromaticity Control
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Solution Overview
Problem
Existing light emitting modules have a low degree of freedom in color adjustment due to each set of light emitting parts emitting light independently, limiting the flexibility in chromaticity adjustment.
Innovation Solution
A light emitting module with a plurality of light emitting parts, an optical member having first and second regions for different chromaticities, and a change mechanism to adjust the distance between the optical member and the light emitting parts along the center axis of a lens, allowing for varying the ratio of light transmission through these regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If each set of light emitting parts emits light independently, then the structure is simple and easy to control, but the degree of freedom in color adjustment is low
Solution Approach 1:
The optical member is divided into multiple regions (first region and second region) with different chromaticity extraction characteristics. Each region corresponds to specific light emitting parts, allowing independent color control for each set of light emitting parts while maintaining overall system simplicity.
Solution Approach 2:
Different regions of the optical member are designed with different properties - the first region extracts light with first chromaticity while the second region extracts light with second chromaticity. This local differentiation enables precise color adjustment for each set of light emitting parts without complicating the overall structure.
2Adaptability or versatility
If the thickness of sealing resin is made different for each set of light emitting parts, then color adjustment is possible, but the degree of freedom in color adjustment remains limited
Solution Approach 1:
Instead of varying the thickness of sealing resin for each set of light emitting parts, the patent uses a unified optical member with different regions that copy the color adjustment function. This approach maintains manufacturing simplicity while achieving superior color adjustment flexibility through the multi-region optical member design.
3Adaptability or versatility
If a unified optical member with multiple regions is used, then color adjustment flexibility is improved, but the device complexity increases
Solution Approach 1:
Multiple color adjustment functions are merged into a single optical member by dividing it into different regions. The first region and second region are integrated into one component that performs both chromaticity extraction functions simultaneously, reducing overall device complexity compared to using separate optical components for each function.
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 module provides high flexibility in color adjustment by changing the distance between the optical member and light emitting parts, enabling precise control over the mixed chromaticity of emitted light.
Implementation Method 1
an optical member including at least one first region where light having a first chromaticity is extracted and at least one second region where light having a second chromaticity different from the first chromaticity is extracted
Data Source
AI summary
A light emitting module includes a plurality of light emitting parts; an optical member including at least one first region where light having a first chromaticity is extracted and at least one second region where light having a second chromaticity different from the first chromaticity is extracted, and configured to transmit or pass light emitted from the plurality of light emitting parts; a change mechanism configured to change a distance between the optical member and the plurality of light emitting parts in a direction along a center axis of the first lens; and a first lens on which light transmitted or passing through the optical member is incident. The first region or the second region is provided so as to correspond to one of the plurality of light emitting parts.