Multi-Wavelength Projection Apparatus with Optical Filter
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Solution Overview
Problem
Current projection systems require multiple projectors and high-speed oscillation of reflective surfaces to simultaneously project multiple images, leading to increased hardware costs and power consumption.
Innovation Solution
A projection apparatus using multiple wavelengths of light and an optical filter to separate light components, allowing simultaneous projection of multiple images onto different positions without the need for high-frequency oscillation of the reflective surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple projectors are used to project multiple images simultaneously, then image projection capability is improved, but hardware cost and device size increase
Solution Approach 1:
The patent combines multiple projection functions into a single projector by using a single light source that emits multiple wavelengths. The optical filter separates these wavelengths to create multiple images, eliminating the need for multiple separate projectors and reducing hardware complexity while maintaining the capability to project multiple images simultaneously.
Solution Approach 2:
The single projector is designed to perform multiple projection functions by utilizing a light source that provides multiple wavelengths. The optical filter enables the system to selectively direct different wavelengths to different positions, allowing one device to replace what would traditionally require multiple specialized projectors.
2Productivity
If reflective surface oscillation speed is increased to project multiple images simultaneously, then image refresh rate is improved, but power consumption increases
Solution Approach 1:
The patent replaces the mechanical oscillation method with an optical filtering method. Instead of relying on high-speed mechanical oscillation of the reflective surface to separate and refresh multiple images, the system uses an optical filter to spatially separate different wavelengths of light. This eliminates the need for high-frequency mechanical movement while maintaining simultaneous image projection and refresh capability.
3Adaptability or versatility
If high-frequency oscillation of reflective surface is used, then simultaneous image projection is achieved, but hardware complexity and cost increase
Solution Approach 1:
The patent substitutes the complex high-frequency mechanical oscillation system with a simpler optical filtering approach. The optical filter passively separates different wavelengths of light to different positions, achieving simultaneous multi-image projection without requiring complex high-speed mechanical components.
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 projection of multiple images with reduced power consumption and hardware costs by filtering light components to display each image independently on separate surfaces, maintaining image quality.
Implementation Method 1
an optical filter configured to filter the light signal provided by the one or more light sources
Data Source
AI summary
A projection apparatus, comprising one or more light sources, wherein the one or more light sources are arranged to collectively provide a light signal which comprises multiple wavelengths, wherein the projection apparatus further comprises an optical filter configured to filter the light signal provided by the one or more light sources, so that two or more images may be projected simultaneously by the projection apparatus, each image being projected to a different position. There is further provided a scanning device which uses the afore-mentioned projection apparatus.