Brewster Angle Polarizer for Compact UV Light Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for emission and detection of polarized light require multiple polarizers, leading to increased costs, complexity, and reduced detection reliability, especially when operating in the ultraviolet wavelength range.
Innovation Solution
A device with angled optical emission and detection axes and a polarizer that deflects outgoing light and transmits incoming light, utilizing orthogonal polarization states to distinguish between the two, reducing the number of components and enhancing detection reliability and sensitivity, particularly in the UV range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two different polarizers are used to polarize outgoing and incoming light beams, then polarization function is achieved, but device complexity and cost increase
Solution Approach 1:
The patent merges the functions of two separate polarizers into a single polarizing beam splitter. This component simultaneously polarizes the outgoing light beam and analyzes the incoming light beam, eliminating the need for two distinct polarizers and reducing overall device complexity while maintaining detection reliability
Solution Approach 2:
The polarizing beam splitter serves multiple functions: it acts as a polarizer for the outgoing beam, a beam splitter to separate polarization components, and an analyzer for the incoming beam. This multi-functionality reduces the number of components needed and simplifies the device architecture
2Reliability
If two different polarizers are used for outgoing and incoming light, then polarization control is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines the roles of two separate polarizers into one polarizing beam splitter component, reducing the bill of materials and manufacturing costs. This single component performs both polarization and analysis functions that previously required two separate elements
Solution Approach 2:
The polarizing beam splitter is designed to handle both outgoing and incoming light polarization control in a single component, reducing procurement costs and simplifying the manufacturing process while maintaining the required detection reliability
3Ease of operation
If two polarizers are positioned at different locations, then light path separation is achieved, but detection reliability decreases
Solution Approach 1:
The patent positions the polarizing beam splitter at a single location where it simultaneously manages both outgoing and incoming light paths. This centralized positioning eliminates alignment errors between separate polarizers and improves detection reliability by ensuring consistent polarization control at the intersection point
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 results in a more compact, cost-effective device with improved detection reliability and sensitivity, capable of accurately detecting objects in the UV range, such as transparent or translucent materials, by using a single polarizer to manage polarization states effectively.
Implementation Method 1
the polarizer is configured to deflect light from the outgoing light beam away from the optical emission axis and/or the incoming light beam towards the optical detection axis... the polarizer comprises a light receiving body... utilizing Brewster's angle to produce the polarization state in the deflected light
Data Source
AI summary
A device for emission of polarized light and its detection including a light emitter configured to generate an outgoing light beam directed along an optical emission axis, a light receiver configured to detect an incoming light beam directed along an optical detection axis, and a polarization unit positioned in the optical emission axis and optical detection axis and configured to polarize the outgoing light beam and the incoming light beam. To allow a compact assembly, the device, by reducing the number of its constituent parts and by providing a good detection reliability of the device, the optical emission axis and the optical detection axis are angled with respect to one another such that they include an intersection point and the polarization unit includes a polarizer configured to deflect light from at least one of the incoming light beam towards the optical detection axis and the outgoing light beam away from the optical emission axis, the deflected light being defined by a polarization state produced by the polarizer.