Transparent Optical Component with Random Cell Filling
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Solution Overview
Problem
The existing methods for producing transparent optical components with cells filled with optical material often result in regular or periodic variations at the surface, leading to light scattering and reduced transparency, which can cause defects like parasitic images and a milky appearance, particularly unfavorable for ophthalmic lenses.
Innovation Solution
Introducing random or pseudo-random variations in the filling levels of the cells, ensuring a mean square deviation of phase shifts less than a quarter of the wavelength, to eliminate light scattering and maintain high transparency by preventing the formation of parasitic images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cells are filled with optical material using conventional methods, then the optical component can be produced with desired optical functions, but regular or periodic variations form at the surface causing light scattering and reduced transparency
Solution Approach 1:
The patent applies asymmetry by deliberately introducing random or pseudo-random variations in the filling levels of cells, breaking the regular periodic pattern that causes diffraction. Instead of uniform filling, the invention uses asymmetric, non-periodic variations that eliminate the network effect and parasitic images while maintaining optical functionality.
Solution Approach 2:
The patent changes the parameter of filling level from constant to variable, specifically introducing random or pseudo-random variations. By controlling the mean square deviation of phase shifts to be less than a quarter of the wavelength, the invention transforms the filling process into a parameter-controlled operation that eliminates surface regularity while preserving optical performance.
2Productivity
If regular cell filling is used to simplify manufacturing, then production efficiency increases, but light diffraction occurs causing parasitic images and loss of contrast
Solution Approach 1:
The patent eliminates the symmetric periodic pattern of regular filling by introducing asymmetric random variations. This breaks the diffraction grating effect that causes parasitic images, thereby improving image quality and contrast while maintaining production efficiency through automated random variation control.
Solution Approach 2:
The patent converts the potentially harmful effect of filling variations into a beneficial outcome by deliberately introducing controlled random variations. Instead of trying to eliminate all variations, the invention uses them to destroy the periodic pattern that causes diffraction, thereby converting a manufacturing challenge into a quality improvement mechanism.
3Stability of the object's composition
If uniform filling levels are maintained across all cells, then manufacturing consistency is improved, but periodic variations cause light scattering and reduced transparency
Solution Approach 1:
The patent changes the filling level parameter from uniform to randomly varied, with controlled mean square deviation. This parameter transformation maintains composition stability through controlled variations while eliminating the periodicity that causes light scattering, thereby improving optical transparency.
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 approach significantly enhances the transparency of the optical component by reducing light scattering and maintaining high optical quality, ensuring that light points are perceived as points without significant loss of contrast, even when used in ophthalmic lenses.
Implementation Method 1
Such a variation, even small, can then generate light scattering, which reduces the transparency of the optical component and introduces defects into the image... It causes light diffraction. Because of this diffraction, a light point is no longer perceived as a point through the optical component.
Data Source
Figure 1~2
AI summary
A transparent optical component having cells (1) filled with an optical material is proposed, which has a high transparency. The cells of the component are filled to levels (h 1,...,h5) which vary randomly, and the variations of which are adapted so as not to cause a perceptible optical defect. To do this, the fill levels of the cells are adapted so that phase shifts undergone by the light rays (R 1,...,R 5) that pass through the cells have a root mean square deviation of less than one quarter of the wavelength (1). Such a component may in particular be an ophthalmic lens.