Integrated Optical Filter and Diffraction Grating
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Solution Overview
Problem
Existing optical systems using separate diffraction gratings and filters are cumbersome and complex, leading to increased size, weight, and cost, with a need for independent replacement of components that is often unnecessary.
Innovation Solution
Combining optical filters and diffraction gratings into a single unit where the filter is in contact with the grating, allowing for integrated functionality that reduces system complexity and size by absorbing or reflecting unwanted wavelengths, thus eliminating the need for separate components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate diffraction gratings and optical filters are used, then component replacement and adjustment are possible, but the optical system becomes larger, more complex, and more expensive
Solution Approach 1:
The patent combines the diffraction grating and optical filter into a single integrated component where the filter is positioned in contact with the grating surface. This merging eliminates the need for separate mounting and alignment of two independent components, reducing system complexity while maintaining the functional capabilities of both elements.
Solution Approach 2:
The integrated component serves multiple functions simultaneously: the diffraction grating disperses light into spectral components while the optical filter selectively transmits or blocks specific wavelength ranges. This multi-functionality in a single component reduces the overall number of elements needed in the optical system.
2Reliability
If separate diffraction gratings and optical filters are used, then each component can be optimized independently, but the system size and weight increase
Solution Approach 1:
By merging the filter and grating into a single physical component, the overall volume and mass of the optical system are reduced. The filter layer is applied directly to the grating surface, eliminating the need for separate mounting structures, spacing elements, and alignment mechanisms that would add weight.
3Adaptability or versatility
If separate diffraction gratings and optical filters are used, then components can be independently adjusted, but alignment becomes more difficult and time-consuming
Solution Approach 1:
The integration of filter and grating into a single component eliminates the alignment problem entirely. Since the filter is in direct contact with the grating surface, there is no relative positioning to adjust, and the optical paths are inherently aligned. This removes a significant source of complexity and time consumption from system setup and maintenance.
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 combined optical filter and diffraction grating system reduces the size and weight of optical systems, simplifies alignment, and lowers costs by integrating functions, while providing adequate performance in various applications and protecting the diffraction grating from damage.
Implementation Method 1
the optical filter is configured to absorb at least one wavelength of incident electromagnetic radiation
Implementation Method 2
Diffraction gratings are generally used to spatially separate a spectrum of incident radiation
Data Source
AI summary
Optical components and systems comprising combined optical filters and diffraction gratings are generally described. In certain embodiments, an optical filter is in contact with a diffraction grating. In certain embodiments, the optical filter and the diffraction grating can be used to diffract and direct a first portion of electromagnetic radiation incident upon the grating and filter toward a receiver while filtering a second portion of the electromagnetic radiation incident upon the grating and filter.