Reflective Condensing Interferometer Reducing Dispersion
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Solution Overview
Problem
Existing optical systems face challenges in achieving accurate focusing and interference simultaneously due to dispersion of light caused by refractive index differences, and they often require complex structures to accomplish these tasks.
Innovation Solution
A reflective condensing interferometer is designed with a concave mirror set, a convex mirror, and a light splitting element, where incident light is focused on a preset focus, and split into detection and reference light paths to generate interference signals, reducing dispersion by adjusting optical path differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a lens is used for focusing, then focusing can be achieved, but dispersion of light of different colors occurs due to refractive index difference, preventing accurate focusing
Solution Approach 1:
The patent replaces the lens-based focusing system with a reflective mirror system. Instead of using a lens that refracts light and causes chromatic dispersion, the invention uses mirrors to reflect and focus light. The first mirror reflects incident light to a first focus, while the second mirror reflects light to a second focus, eliminating the refractive index issues inherent in lens-based systems.
Solution Approach 2:
The patent divides the focusing function into separate components - the first mirror for focusing on the first focus and the second mirror for focusing on the second focus. This segmentation allows independent optimization of each focusing path and enables the system to handle different wavelengths or optical paths separately, avoiding the chromatic aberration problem of single-lens systems.
2Device complexity
If a simple structure is used, then device complexity is reduced, but both focusing and interference cannot be achieved simultaneously
Solution Approach 1:
The patent designs a system where mirrors serve multiple functions: the first mirror and second mirror both perform focusing functions for different optical paths, and the same optical paths are later used for interference detection. The light splitting element also serves dual purposes by directing light to different mirrors while enabling subsequent interference measurements. This multi-functionality reduces the need for separate dedicated components.
Solution Approach 2:
The patent introduces a spatial dimension by creating two separate focus points (first focus and second focus) and using a light splitting element to create different optical paths. This spatial arrangement allows the system to achieve both focusing and interference functions by utilizing different spatial configurations of the same basic optical components.
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 allows for simultaneous focusing and interference signal generation, reducing dispersion and enabling applications in various optical processing and analysis tasks without the need for complex structures.
Implementation Method 1
a concave mirror set having at least a first concave surface portion and at least a second concave surface portion which are oppositely located on two sides of a central axis and are concave on a surface facing the central axis and the preset focus
Implementation Method 2
for focusing on a preset focus
Implementation Method 3
a convex mirror disposed between the concave mirror set and the preset focus on the central axis and convex away from the preset focus
Implementation Method 4
a light splitting element vertically intersecting with the central axis between the convex mirror and the preset focus
Implementation Method 5
a reflecting element disposed between the light splitting element and the convex mirror
Data Source
AI summary
The present invention provides a reflective condensing interferometer for focusing on a preset focus. The reflective condensing interferometer includes a concave mirror set, a convex mirror, a light splitting element, and a reflecting element. The concave mirror set has first and second concave surface portions which are oppositely located on two sides of a central axis passing through the preset focus and are concave on a surface facing the central axis and the preset focus. Light is preset to be incident in parallel to the central axis in use. The convex mirror is disposed between the concave mirror set and the preset focus on the central axis, and is convex away from the preset focus. The light splitting element vertically intersects with the central axis between the convex mirror and the preset focus. The reflecting element is disposed between the light splitting element and the convex mirror.