Optical Path-Changing Member With Concave And Convex Lenses
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Solution Overview
Problem
Existing optical path-changing members with flat slope reflection surfaces face challenges in maintaining optimal optical path direction due to light shift issues, leading to potential misalignment and disrupted optical connections.
Innovation Solution
An optical path-changing member featuring a transparent main body with a concave first lens for internal reflection and a convex spherical second lens, ensuring accurate optical path alignment and stability through precise light direction control, even in cases of light shift, by maintaining the relative positions of the lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat slope reflection surface is used, then the structure is simple and easy to manufacture, but the optical path direction cannot be accurately controlled and light shift occurs
Solution Approach 1:
The patent applies spherical lenses (both convex and concave) to replace the flat slope reflection surface. The convex spherical lens focuses incident light, and the concave spherical lens collimates the reflected light, working together with the reflection surface to achieve accurate optical path control while maintaining manufacturing feasibility through standardized lens components.
Solution Approach 2:
The patent introduces spherical lenses as intermediary optical elements between the incident light and the reflection surface. These lenses mediate the optical path by pre-focusing the light onto the reflection surface and post-collimating the reflected light, thereby enabling precise optical path control without requiring the reflection surface itself to have complex curvature.
2Device complexity
If a flat slope reflection surface is used, then the device complexity is low, but optical connection reliability deteriorates due to light shift and misalignment
Solution Approach 1:
The patent employs spherical lenses to replace the simple flat slope structure. The convex spherical lens concentrates incident light onto the reflection surface, while the concave spherical lens parallelizes the reflected light, ensuring reliable optical connection even when there are minor deviations in light incident position or angle.
Solution Approach 2:
The patent changes the optical parameters by introducing spherical lenses that alter the light path through refraction. The lenses transform divergent incident light into focused beams and convert reflected beams into parallel light, thereby improving optical connection reliability through parameter transformation rather than relying solely on precise geometric alignment.
3Manufacturing precision
If spherical lenses are added to control optical path accurately, then optical path alignment precision is improved, but device complexity increases
Solution Approach 1:
The patent uses spherical lenses which, while adding optical functionality, are commercially available standardized components. The convex spherical lens focuses light onto the reflection surface, and the concave spherical lens collimates the reflected light, achieving accurate optical path control through well-understood optical principles and off-the-shelf components.
Solution Approach 2:
The spherical lenses serve multiple functions: the convex lens focuses incident light onto the reflection surface, the concave lens collimates the reflected light, and both lenses together compensate for misalignment and light shift. This multi-functionality justifies the added device complexity by achieving superior optical performance with a unified optical system.
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 enables highly accurate optical path changes and maintains optical connections by utilizing aspheric and spherical lenses to direct light effectively between optical fibers and components, ensuring reliable optical coupling despite potential shifts.
Implementation Method 1
a first lens having a concave shape when viewed from an incident direction and making light incident on the inside of the member main body from one of the optical fiber and the light input and output end be internally reflected in the member main body and directed to the other
Implementation Method 2
the first lens is an aspheric lens that can make the light from the optical fiber become parallel through internal reflection and make the light be directed to the second lens or can condense light from the light input and output end and make the light be directed to the optical fiber
Implementation Method 3
the second lens is a spherical lens that can condense light from the first lens and make the light be directed to the light input and output end or can make light from the light input and output end parallel and make the light be directed to the first lens
Data Source
AI summary
An optical path-changing member comprises a member main body which is made of a transparent material and in which a reflection section optically connecting the optical fiber to the light input and output end is formed, wherein the reflection section is a first lens having a concave shape when viewed from an incident direction and making light incident on the inside of the member main body from one of the optical fiber and the light input and output end be internally reflected in the member main body and directed to the other of the optical fiber and the light input and output end, a second lens having a convex shape toward the optical component is formed in a light incidence and emission surface of the member main body, that faces the optical component.