Embedded Wavelength Conversion Structure for Compact Laser Light Sources
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Solution Overview
Problem
In common laser light source devices, the size limitation leads to inefficient utilization of laser light generated by the wavelength conversion component, resulting in wasted resources due to the distance between the light-exiting surface and the wavelength conversion member, causing a large divergence angle and reduced emission of exiting light.
Innovation Solution
A laser light source device with a housing containing an opening where the wavelength conversion component is embedded to form an airtight space, allowing the laser light to be projected directly onto the conversion component, thereby optimizing the light-exiting surface and improving utilization by reducing divergence and enhancing sealing without increasing device size or cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the wavelength conversion component is integrated inside the housing, then the device size is reduced and structure is simplified, but the light utilization rate decreases due to distance and divergence
Solution Approach 1:
The patent merges the wavelength conversion component with the housing structure by embedding it in the housing opening, making the conversion component part of the housing itself rather than a separate internal element. This eliminates the air gap between components while maintaining compact size.
Solution Approach 2:
The housing opening serves multiple functions: it provides the light exit path, houses the wavelength conversion component, and seals the laser diode from environmental factors. The conversion component embedded in the opening simultaneously acts as an optical element and a sealing element.
2Loss of energy
If the wavelength conversion component is embedded in the housing opening, then the light utilization rate improves by reducing divergence, but the device requires additional sealing structure
Solution Approach 1:
The housing opening serves multiple functions: it provides the light exit path, houses the wavelength conversion component, and seals the laser diode from environmental factors. The conversion component embedded in the opening simultaneously acts as an optical element and a sealing element.
Solution Approach 2:
The patent merges the wavelength conversion component with the housing structure by embedding it in the housing opening, making the conversion component part of the housing itself rather than a separate internal element. This eliminates the air gap between components while maintaining compact size.
3Illumination intensity
If the wavelength conversion component is placed closer to the laser, then the divergence angle is reduced and light emission is enhanced, but the sealing and protection of the laser may be compromised
Solution Approach 1:
The housing opening serves multiple functions: it provides the light exit path, houses the wavelength conversion component, and seals the laser diode from environmental factors. The conversion component embedded in the opening simultaneously acts as an optical element and a sealing element.
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 utilization rate of fluorescence by ensuring all excited light is emitted, improves the reliability of the device through airtight sealing, and reduces the device's size and cost by integrating the wavelength conversion component within the housing.
Implementation Method 1
the wavelength conversion component may excite laser light projected by the laser on the housing to generate fluorescence
Implementation Method 2
the laser light is projected to the wavelength conversion component through the reflective component
Implementation Method 3
the diffuser sheet is provided in the airtight space and located between the reflective component and the wavelength conversion component
Implementation Method 4
the light-converging element is provided in the airtight space and located on an optical path of the laser light and configured to reduce a divergence angle of the laser light
Implementation Method 5
the thermal conductive member is in thermal contact with the wavelength conversion component
Data Source
AI summary
The present disclosure provides a laser light source device and an illumination system, which include a housing provided with an opening, a wavelength conversion component covering or embedded in the opening to seal the opening to form an airtight space with the housing, and at least one laser provided in the airtight space and configured to generate laser light. The laser light is projected to the wavelength conversion component to generate exiting light. With the above method, the present disclosure increase the utilization rate of the laser light source.