Swinging Light Guide for Laser Source Modules
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Solution Overview
Problem
Existing light source systems for projection devices suffer from partial wastage of laser beams due to circular reflectors, leading to reduced optical quality.
Innovation Solution
A light source module with a light guiding apparatus that swings along a reference axis to change the transmission path of the excitation light beam, allowing it to pass through a light collecting element and a wavelength conversion element, reducing energy loss by sequentially transmitting the beam along different paths and converting it into an illumination beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a circular reflector with openings or coated film is used to reflect light beams, then light collection effect is achieved, but laser beams or excitation beams are partially wasted
Solution Approach 1:
The light guiding apparatus is designed to swing between two positions (first and second positions) to dynamically redirect the excitation light beam between different transmission paths. This dynamic movement allows the system to adaptively route the light beam through either the first optical path or the second optical path, thereby preventing beam waste while maintaining effective light collection.
Solution Approach 2:
The system changes the transmission path parameter of the excitation light beam by swinging the light guiding apparatus between different positions. This parameter change enables the light beam to be transmitted along different paths (first transmission path or second transmission path), optimizing energy utilization and avoiding beam waste that would occur with static reflector configurations.
2Loss of energy
If a light guiding apparatus swings to change transmission path, then beam energy usage efficiency is enhanced, but device complexity increases
Solution Approach 1:
The light guiding apparatus serves multiple functions: it guides the excitation light beam along different transmission paths, acts as a wavelength conversion medium, and enables the system to adaptively route light between different optical paths. This multi-functionality reduces the need for separate components, thereby managing device complexity while achieving reduced energy loss.
Solution Approach 2:
The patent combines the light guiding function with the wavelength conversion function in a single apparatus. The light guiding apparatus not only directs the light beam but also performs wavelength conversion, merging multiple optical functions into one component to minimize overall system complexity while maximizing energy 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
This configuration enhances the usage efficiency of beam energy, thereby improving the optical quality of the projection device by minimizing energy loss and optimizing light distribution.
Implementation Method 1
the wavelength conversion element is disposed on the second transmission path of the excitation light beam and adapted to convert the excitation light beam passing through the light collecting element into an excited light beam
Data Source
AI summary
A light source module includes an excitation light source providing an excitation light beam; a light guiding apparatus disposed on a light path of the excitation light beam and; a light collecting element disposed on a first transmission path and a second transmission path; a light homogenizing element disposed on the first transmission path; and a wavelength conversion element disposed on the second transmission path. The light guiding apparatus swings sequentially along a reference axis of the light path. Through the swinging action, the excitation light beam is transmitted along the first transmission path and the second transmission path at a first timing and a second timing, respectively. Then, the excitation light beam passes through the light collecting element. The light homogenizing element receives the excitation light beam. The wavelength conversion element converts the excitation light beam passing through the light collecting element into an excited light beam.