Light Guide Angle Converter Housing to Prevent Separation
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Solution Overview
Problem
The existing light source apparatus in JP-A-2023-140582 lacks adequate protection for the angle converting member, which is exposed and prone to separation due to external forces, posing a risk of failure.
Innovation Solution
A configuration that includes a light guide with a bonded angle converter, a base, a substrate, and a cover member to form an accommodating space that securely houses the angle converter, with the light guide fixed to the base and the cover member surrounding the circumference to protect the angle converter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the angle converting member is exposed to the space outside the support member, then the light source apparatus has a simple structure, but the angle converting member is not protected and may separate due to external forces
Solution Approach 1:
The angle converting member is nested within the support member structure. The support member includes a receiving cavity that accommodates the angle converting member, effectively placing one component inside another to provide protection while maintaining structural integration.
Solution Approach 2:
The support member acts as a protective shell or enclosure for the angle converting member. This structural element provides a protective boundary that shields the angle converting member from external forces while allowing optical functionality to proceed.
2Ease of manufacture
If the angle converting member is exposed to the space outside the support member, then the light source apparatus is easy to manufacture, but the angle converting member is prone to separation due to external forces
Solution Approach 1:
The angle converting member is nested within the support member structure. The support member includes a receiving cavity that accommodates the angle converting member, effectively placing one component inside another to provide protection while maintaining structural integration.
Solution Approach 2:
The support member and angle converting member are merged into an integrated structure where the support member provides both structural support and protection for the angle converting member. This combination reduces the risk of separation while maintaining ease of manufacture.
3Device complexity
If the angle converting member is exposed to the space outside the support member, then the light source apparatus has fewer components, but the angle converting member is not protected and may separate due to external forces
Solution Approach 1:
The support member is designed to perform multiple functions: it provides structural support for the light source apparatus, protects the angle converting member from external forces, and maintains the optical alignment. This multi-functionality reduces the need for additional separate protective components.
Solution Approach 2:
The angle converting member is nested within the support member structure. The support member includes a receiving cavity that accommodates the angle converting member, effectively placing one component inside another to provide protection while maintaining structural integration.
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 provides robust protection for the angle converter, preventing separation and ensuring stable operation of the light source apparatus.
Implementation Method 1
an angle converter bonded to the first end surface and configured to convert an angle of light output via the first end surface
Implementation Method 2
The angle converting member makes the maximum exiting angle of the fluorescence that exits via the light exiting surface smaller than the maximum incident angle of the fluorescence incident on the light incident surface
Implementation Method 3
a light guide having a side surface extending in a first direction and a first end surface and a second end surface that intersect with the side surface and are located opposite each other
Implementation Method 4
The angle converting member is formed in a truncated quadrangular pyramidal shape, and is fixed to the first surface of the wavelength converting member with an optical adhesive
Data Source
AI summary
A light source apparatus includes a light guide having a side surface extending in a first direction and first and second end surfaces; an angle converter bonded to the first end surface; a base; a substrate on which a light source configured to output light toward the side surface is mounted and which is fixed to the base; and a cover member fixed to the base and configured to accommodate along with the base the angle converter, the base including a first accommodating section configured to accommodate the light guide in a state in which the side surface is exposed, the light guide fixed to the first accommodating section, and a second accommodating section configured to accommodate along with the cover member an accommodated section that is a portion from the angle converter to a portion of the light guide that faces the angle converter, the second accommodating section and the cover member surrounding a circumference of the accommodated section and form an accommodating space configured to accommodate the accommodated section, a portion of the light guide that is fixed to the first accommodating section being a fixed end, and a portion of the light guide that has the first end surface, to which the angle converter is bonded, and faces the angle converter being a free end.