Optical Receiving Device Prism Signal Intensity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Optical sensing devices face challenges in detecting echo light beams at long distances due to beam shifting through the lens assembly, resulting in weakened signal intensity and reduced detection efficiency.
Innovation Solution
Incorporating a reflecting member with a concave-surface reflecting structure or a prism in the optical receiving device to focus and redirect the echo light beams onto the photosensitive surface, enhancing signal intensity and detection accuracy across various distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lens assembly is used to process detecting echo light beams, then the optical sensing device can receive light signals, but the detecting echo light beam shifts when passing through the lens assembly, resulting in weakened signal intensity
Solution Approach 1:
The optical receiving device is divided into separate functional components: a lens assembly for collecting light beams, a reflecting member for redirecting light, and a photosensitive member for detection. This segmentation allows each component to be optimized independently, with the reflecting member positioned to capture shifted light beams and redirect them to the photosensitive member, thereby maintaining signal intensity despite the beam shifting through the lens assembly.
2Device complexity
If the optical receiving device uses a conventional lens assembly without reflecting member, then the structure is simple, but detecting echo light beams are not properly focused, resulting in weaker detected signals
Solution Approach 1:
A reflecting member is introduced as an intermediary component between the lens assembly and the photosensitive member. This reflecting member serves as a mediator that captures the detecting echo light beams after they pass through the lens assembly and redirects them onto the photosensitive member, ensuring proper focusing and signal strength without significantly complicating the overall device structure.
3Illumination intensity
If the reflecting member is positioned to focus light on the photosensitive surface, then signal intensity is improved, but the optical path may be obstructed
Solution Approach 1:
The reflecting member is positioned and angled to operate in a different spatial dimension relative to the optical axis. By using a reflecting surface that is inclined or positioned at an angle, the device redirects light beams from the lens assembly onto the photosensitive member without blocking the primary optical path, thus improving signal intensity while avoiding optical path obstruction.
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 significantly improves the intensity and uniformity of detecting light signals received by the optical sensing device, enhancing both close-range and long-range detection capabilities without obstructing the optical path, suitable for multi-wire-beam and small-volume LiDAR applications.
Implementation Method 1
the reflecting member having a reflecting surface for reflecting the light passing through the lens assembly
Implementation Method 2
light reflected by the reflecting surface can be focused via the reflection action of the concave-surface reflecting structure
Implementation Method 3
a photosensitive member having a photosensitive surface for receiving light reflected by the reflecting surface
Data Source
AI summary
The present application discloses an optical receiving device, including: a receiving sensor; an optical assembly arranged on a side where a photosensitive surface of the receiving sensor is located. The optical assembly includes a first prism having a first end surface, a second end surface, and a plurality of sides connected between the first end surface and the second end surface. The plurality of sides include a first side and a second side. At least a portion of laser signals reflected by a detecting target is refracted by the first side and enter the first prism. At least a portion of laser signals refracted by the first side is refracted by the second side and emitted from the first prism to reach the receiving sensor.