Colored Diffuser Lens Plate for Video Conferencing Lighting
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Solution Overview
Problem
Video cameras on personal computers and cell phones often produce unflattering facial coloring due to the combination of camera color response and ambient lighting, as color correction filters are not available for aftermarket or built-in cameras.
Innovation Solution
A lighting system with a reflector structure having a light emitting diode (LED) positioned at the parabolic focus, a colored diffuser lens plate, and an attachment member for securing it to computer devices, providing collimated and diffused light to improve video imaging during video conferencing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If ambient lighting is used for video conferencing, then the setup is simple and inexpensive, but the facial coloring becomes unflattering
Solution Approach 1:
The patent introduces a colored diffuser lens plate as an intermediary element between the light source and the subject. This diffuser plate with specific color properties (yellow or amber) acts as a mediator that modifies the spectral composition of light to counteract the camera's color response, thereby eliminating unflattering facial coloring without requiring complex lighting setups
Solution Approach 2:
The patent applies color changes by using a colored diffuser lens plate (yellow or amber) that selectively transmits certain wavelengths of light while blocking others. This color filtering approach modifies the ambient lighting to compensate for the camera's color response characteristics, transforming the overall color rendering to achieve more flattering facial illumination
2Object-affected harmful factors
If color correction filters are attached to the camera lens, then facial coloring is improved, but such filters are not available for aftermarket or built-in cameras
Solution Approach 1:
Instead of attaching color correction filters to the camera lens (the conventional approach), the patent inverts the solution by placing colored diffusers in front of the light source. This reversal allows the lighting modification to occur before the light reaches the camera, making the solution compatible with any camera that has a video input, including aftermarket and built-in cameras without requiring lens modifications
Solution Approach 2:
The colored diffuser lens plate serves as an intermediary that modifies the light itself rather than requiring modification of the camera. This approach makes the color correction universally applicable to any camera system that captures video, eliminating the need for camera-specific filters while achieving the desired color correction effect
3Illumination intensity
If multiple light sources are used to improve illumination, then the lighting coverage is better, but the device complexity increases
Solution Approach 1:
The patent segments the lighting function into modular light units, each containing a light source and a colored diffuser lens plate. These segmented units can be independently positioned and adjusted to achieve comprehensive lighting coverage. The segmentation allows for flexible configuration where multiple simple units work together to provide superior illumination without requiring a single complex lighting system
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
The lighting system provides more flattering video imaging by counteracting unflattering color effects, enhancing the visual appearance of participants during video conferencing and videotelephony.
Implementation Method 1
a reflector structure having a light source, such as a light emitting diode (LED), positioned within the reflector structure to reflect light rays from the light source
Implementation Method 2
each light source is positioned substantially at the parabolic focus of the paraboloid reflector. Light rays emanating from the parabolic reflector structure are substantially parallel or collimated
Implementation Method 3
a colored diffuser lens plate overlying the reflector structure... the diffuser plate extends in overlying relation to all the reflectors... effectively diffuse the collimated light from the reflector structure
Implementation Method 4
The diffuser plate is translucent and yellow... Light rays emanating from the reflector structure pass through the diffuser plate
Data Source
AI summary
A lighting system for video conferencing includes a reflector structure positioned in an enclosure and having one or more light sources positioned therein to reflect light in a selected direction. A diffuser lens plate overlies the reflector structure to diffuse light emanating from the reflector structure. The reflector structure may include a plurality of parabolic reflectors having the shape of circular paraboloids. The light sources may include LED's positioned at the parabolic foci of the reflectors. The diffuser lens plate is translucent and may be colored yellow to filter light from the LED's. The diffuser has a surface texture which diffuses light from the LED's.