Image-Capturing Device Direct Light Subtraction for Contrast
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image-capturing devices using organic EL elements face issues with direct incident light from the light emitting element reducing image contrast due to unwanted light entering the image-capturing element.
Innovation Solution
Incorporating an image data correction unit that subtracts direct incident light from the image data generated by the image-capturing element, which is measured by irradiating a black plate and storing the value to be canceled from actual image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a light emitting element is placed close to a lens for image capture, then the device size is reduced, but direct incident light from the light emitting element enters the image-capturing element and decreases image contrast
Solution Approach 1:
The patent extracts and separates the harmful direct incident light from the useful reflected light by using a lens to focus only the reflected light onto the image-capturing element, while blocking the direct light path from the light emitting element through careful optical arrangement and shielding
Solution Approach 2:
The patent introduces a lens as an intermediary optical element that mediates between the light emitting element and the image-capturing element, selectively transmitting only the reflected light while blocking direct incident light through its focusing properties and optical path design
2Measurement precision
If optical systems use external optical fibers over a lens for illumination, then image quality is maintained, but the optical system becomes complicated and device size increases
Solution Approach 1:
The patent merges the illumination function and image capture function into a single integrated optical path, eliminating the need for separate external optical fibers by using the light emitting element's own light output directed through the lens to illuminate the subject and capture the reflected light
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 effectively reduces the impact of direct incident light, enabling the capture of high contrast images by isolating and correcting for the unwanted illumination.
Implementation Method 1
a light emitting element; wherein the light emitting element irradiates a subject with light
Implementation Method 2
the image-capturing element senses the light reflected by the subject and generates an image data
Data Source
AI summary
Provided is an image-capturing device that reduces the effect of direct incident light on an image-capturing element and allows a high contrast image to be obtained. An image-capturing device includes: an image-capturing element; a light emitting element; and an image data correction unit, wherein the light emitting element irradiates a subject with light, the image-capturing element senses the light reflected by the subject and generates an image data, and the image data correction unit corrects the image data by subtracting incident light directly entered into the image-capturing element from the light emitting element without being reflected by the subject from the image data.