Curved Reflector Light Source for Improved Light Condensing
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Solution Overview
Problem
Existing light source devices using semiconductor lasers or LEDs lack effective light condensing properties, leading to inefficient light emission and utilization.
Innovation Solution
A light source device comprising a plurality of light-emitting portions, optical members with reflective surfaces, and a condenser lens, where the reflective surfaces have specific curvatures to enhance light condensing, including a parabolic mirror and a stepped mirror to reflect and focus light effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light source devices using semiconductor lasers or LEDs are used, then the device structure is simple, but the light condensing properties are poor
Solution Approach 1:
The patent applies curved reflective surfaces (parabolic and stepped mirrors) to redirect and concentrate light from LED arrays. The parabolic mirror reflects light at specific angles while the stepped mirror creates multiple reflection paths, both curving light trajectories to achieve condensing effects that improve illumination intensity and uniformity.
Solution Approach 2:
The optical system is divided into multiple discrete components: LED arrays, parabolic mirrors, stepped mirrors, and condenser lenses. This segmentation allows each component to perform a specific function in the light condensing process, making the complex system manageable and optimizable while achieving superior light condensing properties.
2Productivity
If multiple optical components are added to improve light condensing, then the light emission efficiency improves, but the device complexity increases
Solution Approach 1:
The patent combines multiple reflective functions into a single integrated mirror assembly that includes both parabolic and stepped mirror surfaces. This merging reduces the number of separate components needed while maintaining the light condensing effectiveness, thereby improving light emission efficiency without proportionally increasing device complexity.
Solution Approach 2:
The optical components are designed to perform multiple functions: the parabolic mirror both reflects and redirects light, the stepped mirror creates additional reflection paths while also serving as a structural element, and the condenser lens focuses light while defining the emission pattern. This multi-functionality reduces the total component count while maintaining high light emission efficiency.
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 device achieves improved light condensing properties, allowing for efficient light emission and utilization, suitable for applications such as lighting, on-vehicle headlights, and optical instruments.
Implementation Method 1
The one or a plurality of optical members comprises a first reflective surface and a second reflective surface, and are configured to reflect light emitted from the plurality of light-emitting portions and emit the light in a predetermined direction
Implementation Method 2
The condenser lens is configured to condense the light emitted from the one or the plurality of optical members
Data Source
AI summary
A light source device includes: light-emitting portions arranged at least along an arrangement direction; one or more optical members including a first reflective surface and a second reflective surface, and configured to reflect light emitted from the plurality of light-emitting portions and emit the light in a predetermined direction; and a condenser lens configured to condense the light emitted from the one or more optical members. The first reflective surface is configured to reflect the light emitted from the plurality of light-emitting portions toward the second reflective surface. The second reflective surface is configured to reflect the light reflected by the first reflective surface. Each of the first reflective surface and the second reflective surface is a surface having a curvature in the arrangement direction. The curvature of the second reflective surface in the arrangement direction is greater than the curvature of the first reflective surface in the arrangement direction.