Optical Receiving Module Integrating Reflectors to Bend Light Path
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Solution Overview
Problem
Conventional LiDAR systems have a large number of parts due to the need for a reflecting mirror to bend the optical path, which increases size and complexity, limiting their miniaturization for applications like autonomous driving.
Innovation Solution
An optical receiving module with a light transmitting body and multiple reflectors that reflect light multiple times to reach the receiver unit, eliminating the need for a separate reflecting mirror, thereby reducing the number of parts and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a reflecting mirror is installed to bend the optical path, then the optical path can be turned, but the number of parts increases and the size increases
Solution Approach 1:
The patent merges the optical path bending function into the light transmitting body by forming reflectors as integral parts of the body structure. The first reflector is formed on the inner surface of the light transmitting body, and the second reflector is formed on the outer surface, eliminating the need for separate reflecting mirror components while maintaining the optical path bending capability.
Solution Approach 2:
The light transmitting body serves multiple functions: it transmits light from the light incidence part to the light receiver unit, and simultaneously provides integrated reflectors (first and second reflectors) to bend the optical path. This multi-functionality reduces the overall number of components needed in the system.
2Ease of operation
If a reflecting mirror is installed to bend the optical path, then the optical path can be turned, but the size of the LiDAR increases
Solution Approach 1:
The patent merges the optical path bending function into the light transmitting body by forming reflectors as integral parts of the body structure. The first reflector is formed on the inner surface of the light transmitting body, and the second reflector is formed on the outer surface, eliminating the need for separate reflecting mirror components while maintaining the optical path bending capability.
3Length of stationary object
If multiple reflectors are used to increase optical path length, then the optical path is increased, but the number of parts increases
Solution Approach 1:
The patent merges multiple reflectors (first reflector and second reflector) into the light transmitting body structure. The first reflector is formed on the inner surface, and the second reflector is formed on the outer surface, allowing the light to be reflected multiple times to increase the optical path length while maintaining a compact structure with reduced part count.
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 design reduces the number of components and size of the LiDAR system while maintaining an increased optical path, enabling more compact and efficient detection capabilities.
Implementation Method 1
a plurality of reflectors configured to reflect the light incident from the light incidence part a plurality of times, such that the light is incident toward the light receiver unit
Implementation Method 2
The light incidence part may have an anti-reflective layer disposed thereon to prevent light reflection
Data Source
AI summary
An optical receiving module may include: a light transmitting body configured to transmit light; a light incidence part through which light is incident into the light transmitting body; and a plurality of reflectors configured to reflect the light incident from the light incidence part a plurality of times, such that the light is incident toward a light receiver unit.