Image Capture-Display Device Using Dichroic Optical Path
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Solution Overview
Problem
Existing image capture-display devices require complex control of multiple light sources and liquid crystal display components to capture and display video simultaneously, leading to issues like flickering and misaligned lines of sight between the user and the displayed image.
Innovation Solution
An image capture-display device configuration that includes a light source, an optical system capable of reflecting visible light and transmitting infrared or ultraviolet light, a display panel, and an imaging device, which allows for simultaneous capture and display without the need for complex control, using a dichroic mirror or cold mirror to separate and manage different wavelength ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light sources and liquid crystal display are used to capture and display video simultaneously, then video capture and display can be achieved, but complicated control is required
Solution Approach 1:
The patent segments the light spectrum into different wavelength ranges (visible light and infrared/ultraviolet) and uses separate optical paths for each. The optical system includes specific optical filters that transmit only certain wavelength ranges to the imaging device, while the display panel handles the visible light path. This segmentation allows independent optimization of each path without complex coordination between multiple light sources and liquid crystal displays.
Solution Approach 2:
The display panel serves multiple functions: it displays visible light images to the user while simultaneously allowing infrared/ultraviolet light to pass through to the imaging device. The optical system acts as a multi-functional component that both reflects visible light to the display panel and transmits infrared/ultraviolet light to the imaging device, eliminating the need for separate dedicated components for each function.
2Adaptability or versatility
If video is captured by shooting a person facing the display screen straight on with a camera arranged around the display, then video can be displayed, but the user's line of sight and the displayed image's line of sight become misaligned
Solution Approach 1:
Instead of placing the camera around the display screen facing the user (conventional approach), the patent inverts the arrangement by placing the imaging device behind the display panel, facing the same direction as the user. The optical system is configured to transmit light from the subject through the display panel to the imaging device, ensuring that both the user and the captured image share the same line of sight toward the subject.
3Ease of operation
If the person is shot from behind the display while video is being presented on the display, then line of sight can be aligned, but complicated control is required on multiple light sources and liquid crystal display
Solution Approach 1:
The patent merges the display function and imaging function into a single integrated optical path. The display panel and optical system work together as a unified structure where visible light is reflected to the user while infrared/ultraviolet light is transmitted to the imaging device. This merging eliminates the need for complex coordination between separate light sources and liquid crystal display components, as the single optical system handles both functions simultaneously without requiring complicated control.
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
Enables simultaneous video capture and display without complex control, aligning the user's line of sight with the displayed image, and reduces flickering, improving the overall functionality and user experience.
Implementation Method 1
an optical system which is arranged on the optical path of the light beam falling within the first wavelength range that has been emitted from the light source and which is configured to reflect at least partially the light beam falling within the first wavelength range and transmit at least partially a light beam falling within a second wavelength range that is different from the first wavelength range
Data Source
AI summary
An image capture-display device includes: a light source that emits a light beam falling within a first wavelength range; an optical system arranged on the optical path of the light beam falling within the first wavelength range emitted from the light source and configured to reflect the light beam falling within the first wavelength range and transmit a light beam falling within a second wavelength range; a display panel arranged on the optical path of the light beam falling within the first wavelength range emitted from the light source and reflected by a dichroic mirror and configured to transmit the light beams falling within the first and second wavelength ranges; and an imaging device arranged opposite from the display panel with respect to the optical system and configured to receive the light beam falling within the second wavelength range transmitted through the display panel and the optical system.