Blue Light Filter with Color Compensation Processor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices that block blue light to reduce harmful effects on human health often degrade image quality with unpleasant yellowish or pinkish effects, compromising color fidelity.
Innovation Solution
A system combining a blue light blocker and color compensation processor that filters out blue light spectrum energy while preserving color fidelity by calculating and adjusting pixel values to maintain the metamer of the original visual content, ensuring minimal harmful perceptual response from human observers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a blue light blocker is applied to a display device to reduce harmful blue light, then the harmful blue light is reduced, but the display generates unpleasant yellowish and/or pinkish effects and degrades image quality
Solution Approach 1:
The patent applies color compensation by adjusting the intensity parameters of red, green, and blue sub-pixels to counteract the color shifts caused by the blue light blocker. The processing device calculates compensation values based on the blocker's spectral characteristics and applies these adjustments to maintain accurate color reproduction while preserving the reduced blue light output.
Solution Approach 2:
The system incorporates a feedback mechanism where the processing device continuously monitors the spectral output of the display device and dynamically adjusts the sub-pixel intensities to compensate for the blue light blocker's effects. This closed-loop approach ensures that color fidelity is maintained despite the presence of the blocker.
2Object-affected harmful factors
If blue light is blocked to protect human health, then harmful effects on circadian clock and retinal cells are reduced, but the overall color accuracy and visual quality of the display deteriorates
Solution Approach 1:
The processing device modifies the intensity parameters of individual color sub-pixels to compensate for the blue light blocker's spectral filtering effects. By adjusting the relative intensities of red, green, and blue sub-pixels, the system maintains accurate color perception while preserving the health-protective blue light reduction.
Solution Approach 2:
The patent implements dynamic color compensation that adapts to the specific spectral characteristics of the blue light blocker. The processing device calculates and applies color transformation matrices that restore the original color appearance by counteracting the yellowish and pinkish shifts introduced by the blocker.
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
Effectively reduces harmful blue light spectrum energy while maintaining the overall color fidelity of visual content displayed on devices, preventing undesirable color shifts and preserving the original image quality.
Implementation Method 1
a filter to filter the primary light to substantially remove a spectrum energy in a wavelength band
Implementation Method 2
calculating, in view of the filtered primary light, a metamer of the visual content
Data Source
AI summary
A system include a light source that is deficient of a first primary color, a display device to visually present a content using light beams of the light source, and a processing device to receive the content, calculate, taking into account an effect of deficiency of the first primary color in the light source, a metamer of a visual presentation of the content to compensate for the deficiency of the first primary color in the light source, wherein the calculated metamer when presented on the display device substantially preserves color appearance of the visual presentation rendered on the display device and substantially preserves a hue of the visual presentation by means of digital image processing that compensates for the effect of the deficiency of the first primary color on the color appearance, and provide, to the display device, the metamer of the visual presentation to display using the light beams.