Optical Path Folding Device for Compact Chassis Volume Reduction
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Solution Overview
Problem
Conventional optical path devices with four reflection mirrors face challenges in reducing size and weight while maintaining optical path length and efficiency, especially in compact electronic products where volume and weight requirements are increasing.
Innovation Solution
The optical path device uses four reflection mirrors with a parallel mirror set and an optical path turning mirror to adjust the incident angle and distance between mirrors, allowing for flexible control of the optical path length and improving reflectivity to enhance volume efficiency and reduce chassis volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If four reflection mirrors are used to fold optical paths, then the optical path length is extended, but the device size and weight are reduced
Solution Approach 1:
The patent uses four reflection mirrors arranged in specific spatial configurations to fold the optical path in multiple dimensions. By strategically positioning mirrors at angles and distances, the system extends the optical path length while maintaining a compact device footprint, effectively utilizing three-dimensional space to resolve the contradiction between path length and device volume.
Solution Approach 2:
The patent incorporates adjustable elements including variable incident angles, adjustable angles of optical path turning mirrors, and adjustable distances between parallel mirrors. These dynamic parameters allow the system to optimize the optical path length while maintaining compact dimensions, enabling flexible adaptation to different optical requirements without increasing device volume.
2Length of moving object
If the number of reflection mirrors is increased, then the optical path is extended, but the device complexity increases
Solution Approach 1:
The patent employs four reflection mirrors that serve multiple functions: they fold the optical path, control the path length through adjustable parameters, and maintain system compactness. Each mirror is positioned and angled to contribute to both path extension and device simplification, demonstrating multi-functionality that reduces overall system complexity despite the extended optical path.
3Length of moving object
If the distance between parallel mirrors is increased, then the optical path length is extended, but the device volume increases
Solution Approach 1:
The patent incorporates adjustable distances between parallel mirrors as a key parameter. By making this distance variable rather than fixed, the system can optimize the optical path length while maintaining minimal device volume. The adjustable parameter allows dynamic adaptation to different optical requirements without permanently increasing chassis volume.
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 enables a compact optical path device to accommodate various lenses, reduces chassis volume, minimizes light energy decay, and simplifies manufacturing by controlling reflection numbers and angles, thereby achieving high volume efficiency and ease of fabrication.
Implementation Method 1
a reflection unit, used to reflect the incident light, wherein the reflection unit comprises a parallel mirror set including a first reflection mirror and a second reflection mirror, a third reflection mirror, and a fourth reflection mirror
Implementation Method 2
a lens, used to focus the incident light reflected by the reflection unit to form an imaging signal
Implementation Method 3
a charge coupled device (CCD), used to covert the imaging signal produced by the lens into an electronic signal
Data Source
AI summary
An optical path device composed of four pieces of reflected mirrors is disclosed. In the optical path device, after being reflected many times between a set of two parallel mirrors, an incident light not perpendicular to the surface of the original document is turned by an optical path turning mirror to enter the parallel mirrors set again and reflected many times, and then the incident light is reflected into a lens and is imaged on a charge coupled device (CCD). The optical path device can limit the optical path between the parallel mirrors set effectively, thereby decreasing the volume of a chassis.