Optical Element with Collimating Units and Filter for Long-Range Signal Reception
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Solution Overview
Problem
Conventional optical elements face issues with reduced light energy reception and low light coupling efficiency when the distance between the light source and photo detector increases, leading to condensation of inclined light beams and total reflection, which can result in failed communication due to receiving distance deviations and low optical signal reception.
Innovation Solution
An optical element comprising a lens component with collimating units and a filter, where light beams are refracted and reflected through a groove and plated film to increase the distance between the light source and photo detector without affecting light energy, using a filter with high reflective rates for large incident angles and high transmittance for small angles to adjust energy and ensure full signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the distance between the light source and the photo detector is increased, then the light coupling efficiency decreases and light energy reception is reduced
Solution Approach 1:
The optical element is divided into multiple functional components: a lens component with multiple collimating units (first, second, and third collimating units) and a filter component. This segmentation allows different parts to handle different aspects of light transmission - the lens component manages light path and collimation while the filter manages wavelength selection, collectively enabling long-distance transmission without energy loss
Solution Approach 2:
The patent introduces intermediate optical elements (the lens component with collimating units and the filter) between the light source and photo detector. These intermediaries serve as mediators that optimize light transmission - the collimating units ensure proper light direction and the filter ensures wavelength matching, thereby maintaining high light coupling efficiency even at increased distances
2Length of stationary object
If the inclination angle of the light-splitting surface is increased, then the distance between light source and photo detector increases, but the light penetration rate decreases causing total reflection
Solution Approach 1:
The patent changes the optical parameters by introducing multiple collimating units with specific focal lengths and positions. The first collimating unit has a first focal length, the second has a second focal length, and the third has a third focal length. By carefully controlling these parameters, the system achieves proper light collimation and direction without exceeding critical angles that would cause total reflection, thereby maintaining reliable light transmission at increased distances
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 allows for increased distance between the light source and photo detector without reducing light energy or sensitivity, ensuring stable high-bandwidth signal transmission and full optical signal reception within communication standards by optimizing light transmission and reflection.
Implementation Method 1
a part of the light beams enters, by refraction through the seventh plane, and propagates within the lens component along a second optical path
Implementation Method 2
the remaining part of the light beams is reflected by the seventh plane to propagate within the groove, to thereby enter and propagate within the filter, by refraction through the first side surface
Data Source
AI summary
An optical element includes a lens component and a filter. The lens component has a first plane, a second plane, a third plane, a fourth plane, a fifth plane, a first collimating unit formed on the first plane, a second collimating unit formed on the first plane, and a third collimating unit formed on the third plane. The first, second, third, fourth and fifth planes are disposed around and parallel to a reference axis. The third plane is formed with a groove defined by a sixth plane and a seventh plane which extend obliquely from the third plane and respectively opposite to the first and second planes. Each of the sixth and seventh planes extends in a direction that is parallel to the reference axis. The filter is disposed on the third plane for covering the groove.