Variable Spectroscopy Device Gap Adjustment via Peripheral Driving
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Solution Overview
Problem
Existing optical apparatuses for capturing spectral images face challenges in adjusting the gaps between optical members to the coherence length of light beams, requiring high driving resolution and increased moving distances, which is difficult to achieve in structures with piezoelectric driving means disposed between optical members.
Innovation Solution
An optical apparatus with a variable spectroscopy device comprising first and second optical members with a space between them, a frame member fixing the first optical member, and a driving section transferring the second optical member, supported by a frame member, allowing for precise adjustment of the gap and spectral characteristics, including an optical element or photoelectric conversion element supported by the frame member, with the driving section arranged to change the space between the optical members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If piezoelectric driving means are disposed between two or more optical members to adjust gaps, then spectral information can be acquired, but the gaps cannot be reduced to coherence length due to insufficient moving distance
Solution Approach 1:
The patent transitions from a linear arrangement of optical members to a configuration where the driving section is positioned at the periphery, enabling gap adjustment through rotational or lateral movement rather than only axial displacement. This dimensional change allows sufficient moving distance while maintaining compact overall length.
Solution Approach 2:
The patent divides the optical system into separate modules with the driving section independently positioned, allowing the gap between optical members to be adjusted without requiring the entire optical train to move. This segmentation enables precise gap control with reduced moving distance requirements.
2Measurement precision
If the driving section moves optical members over large distances to achieve coherence length gaps, then spectral resolution improves, but the overall apparatus length increases
Solution Approach 1:
By positioning the driving section at the periphery and utilizing rotational or lateral movement mechanisms, the patent achieves large effective moving distances in a compact configuration. The optical members can traverse sufficient paths for high spectral resolution while the apparatus maintains a short overall length due to the peripheral arrangement.
Solution Approach 2:
The patent employs a nested configuration where optical members are arranged concentrically or in nested positions, allowing the driving section to move them through sufficient distances for coherence length adjustment without increasing the external dimensions of the apparatus. The nested structure enables compact packaging of the optical path.
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 enables efficient capture of spectral images by allowing precise control of the gap between optical members, improving the resolution and accuracy of spectral characteristics, and reducing the overall length of the apparatus while maintaining sufficient moving distance, facilitating the capture of spectral images of body tissue or cavity tissues.
Implementation Method 1
driving means formed of piezoelectric elements and disposed in at least one of an imaging optical system and an illumination optical system
Implementation Method 2
Since the etalon element changes the transmission characteristics thereof using an optical interference effect, it is necessary to reduce the gaps between adjacent pairs of the optical members to approximately the coherence length of light beams
Implementation Method 3
a photoelectric conversion element that conducts photoelectric conversion
Data Source
AI summary
An optical apparatus for capturing spectral images includes a variable spectroscopy device having first and second optical members that face each other and have a space therebetween, the spectral characteristics of the variable spectroscopy device being changed in accordance with changes in the relative positions of these optical members; a frame member that fixes the first optical member in place; a driving section disposed between the frame member and the second optical member, and transferring the second optical member with respect to the frame member in accordance with driving signals input to the driving section; and an optical element that deflects or disperses light beams passing through the variable spectroscopy device or a photoelectric conversion element that conducts photoelectric conversion. The optical element or the photoelectric conversion element is supported by the frame member.