Electromagnetic Wave Detecting Apparatus Ghost Flare Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electromagnetic wave detecting apparatuses face issues with ghost or flare occurrences due to the reflection of electromagnetic waves at critical angles, which affect the accuracy of image formation and distance measurement.
Innovation Solution
The apparatus includes a radiator, a first optical element, an intermediate layer, and a blocking unit. The intermediate layer reflects electromagnetic waves incident at angles equal to or greater than the critical angle, while allowing those incident at lesser angles to pass through, and the blocking unit partially blocks electromagnetic waves to prevent ghost or flare by controlling the direction of propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electromagnetic waves are allowed to pass through the intermediate layer at all angles, then the device complexity is reduced, but ghost or flare occurs due to reflection at critical angles, degrading measurement precision
Solution Approach 1:
The patent segments the electromagnetic wave paths by introducing a blocking unit with a specific opening that divides the optical path into two distinct regions: a first region for direct electromagnetic waves and a second region for reflected waves. This segmentation allows selective control of different wave paths to prevent ghost or flare while maintaining measurement precision.
Solution Approach 2:
The blocking unit acts as an intermediary element positioned in the optical path to selectively block reflected electromagnetic waves that would cause ghost or flare. The opening in the blocking unit serves as a mediator that allows direct waves to pass while preventing harmful reflected waves from reaching the detector.
2Measurement precision
If a blocking unit is introduced to prevent ghost or flare, then measurement precision is improved, but device complexity increases due to additional optical path control structures
Solution Approach 1:
The blocking unit is designed with a specific opening configuration that provides localized control over the optical path. Rather than blocking all electromagnetic waves uniformly, the opening is positioned and shaped to selectively block only the reflected waves that cause ghost or flare, while allowing direct waves to pass through unaffected.
Solution Approach 2:
The patent addresses the blocking requirement by introducing a spatial dimension - the opening in the blocking unit is positioned at a specific location in the optical path where reflected waves converge. This dimensional placement allows selective blocking without requiring complex active control mechanisms.
3Reliability
If the intermediate layer blocks electromagnetic waves at critical angles, then ghost or flare is reduced, but the quantity of electromagnetic waves reaching the detector decreases, affecting productivity
Solution Approach 1:
The patent converts the harmful effect of reflected electromagnetic waves (which cause ghost or flare) into a beneficial filtering mechanism. The intermediate layer's reflection property at critical angles is utilized to redirect harmful waves away from the detector, while the blocking unit's opening is positioned to allow direct useful waves to pass through, thus converting a potential problem into a solution.
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 reduces the occurrence of ghost or flare, enhancing the accuracy of image formation and distance measurement by ensuring electromagnetic waves propagate along predetermined paths, improving the overall performance of the electromagnetic wave detecting apparatus.
Implementation Method 1
The intermediate layer is configured not to allow passage of electromagnetic waves of the second part incident at an angle equal to or greater than a first critical angle
Implementation Method 2
The first optical element has a first surface configured to separate incident electromagnetic waves into a first part propagating in a first direction and a second part propagating in a second direction
Data Source
AI summary
An electromagnetic wave detecting apparatus 10 includes a first image forming unit 15, an intermediate layer 22, and a blocking unit 25. The first image forming unit 15 is configured to cause incident electromagnetic waves to form an image. The blocking unit 25 is configured to block propagation of electromagnetic waves to the first image forming unit 15 when the electromagnetic waves are incident on the intermediate layer 22 at angle equal to or greater than a critical angle.