Modular Optical Member for Multispectral Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current multispectral imaging techniques face challenges in acquiring high-quality images due to limitations in adjusting light amounts and spectral sensitivity across different wavelength ranges, often requiring multiple imaging sessions and complex optical axis alignment.
Innovation Solution
A lens device with a modular optical member featuring multiple aperture regions equipped with adjustable optical filters, polarizing filters, and dark filters, allowing for variable light adjustment and alignment, coupled with an imaging apparatus that calculates and adjusts light ratios to optimize image quality across various wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple imaging sessions are used to capture different wavelength ranges, then spectral coverage is improved, but time consumption and operational complexity increase
Solution Approach 1:
The patent combines multiple optical filters with different wavelength transmission characteristics into a single optical member that can be simultaneously inserted into the optical system. This allows the imaging device to capture multiple wavelength ranges in a single imaging session, thereby improving spectral coverage while reducing time consumption compared to sequential imaging approaches.
Solution Approach 2:
The optical member is designed with multiple aperture regions, each containing different combinations of optical filters and polarizing filters. This universal design enables a single optical member to handle multiple spectral imaging functions simultaneously, eliminating the need for multiple separate imaging sessions and reducing operational complexity.
2Ease of manufacture
If optical filters are fixed in position, then manufacturing simplicity is improved, but adaptability to adjust light amounts for different wavelengths deteriorates
Solution Approach 1:
The patent introduces adjustment members that enable dynamic adjustment of the aperture area for each aperture region in the optical member. This allows the light amount transmitted through each wavelength range to be adjusted independently, providing adaptability while maintaining a relatively simple fixed-filter structure for manufacturing ease.
3Measurement precision
If optical axis alignment is performed manually, then alignment precision can be improved, but operational complexity and time consumption increase
Solution Approach 1:
The optical member is designed with a structure that enables self-alignment when inserted into the optical system. The frame of the optical member includes positioning features that automatically align the optical axis of the filters with the optical axis of the imaging lens, eliminating the need for complex manual alignment procedures while maintaining high alignment precision.
4Adaptability or versatility
If multiple aperture regions with different filters are used, then spectral imaging capability is improved, but device complexity increases
Solution Approach 1:
The patent employs a nested structure where multiple aperture regions with different filter combinations are integrated into a single optical member frame. Each aperture region contains optical filters and polarizing filters arranged in a compact nested configuration, allowing multiple spectral imaging functions to be housed within one unified component, thereby improving spectral imaging capability while minimizing the increase in device complexity.
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
Enables easy acquisition of high-quality multispectral images by adjusting light amounts and sensitivity for each wavelength range, reducing the need for multiple imaging sessions and maintaining image quality without optical axis deviation.
Implementation Method 1
a plurality of optical filters that are disposed in at least one of the plurality of aperture regions and include two or more optical filters transmitting light having at least some wavelength ranges different from each other
Implementation Method 2
a plurality of polarizing filters that are disposed in at least one of the plurality of aperture regions and have different polarization directions
Implementation Method 3
an imaging optical system that includes a lens forming an optical image of a subject
Data Source
AI summary
A lens device includes an imaging optical system and an optical member. The optical member is disposed near a pupil of the imaging optical system in a state where an optical axis of the optical member coincides with an optical axis of the imaging optical system. The optical member includes a frame that includes a plurality of aperture regions, a plurality of optical filters that are disposed in at least one of the plurality of aperture regions and include two or more optical filters transmitting light having at least some wavelength ranges different from each other, and a plurality of polarizing filters that are disposed in at least one of the plurality of aperture regions and have different polarization directions. The lens barrel has a slit, and the optical member is insertable into and removable from the imaging optical system through the slit.