MEMS Light Beam Generator for Real-Time 3D Interactive Interfaces
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Solution Overview
Problem
Conventional 3D information generators for interactive interfaces are complex in hardware and calculation, require additional devices like accelerators or gyro-sensors, and have low frame rates, making real-time 3D information generation challenging, especially for applications like interactive games.
Innovation Solution
A 3D information generator using a MEMS light beam generator with a light source, MEMS mirror, and image sensor that projects a scanning light beam with a predetermined pattern, allowing for distance information generation through triangulation calculation, combined with 2D image information to produce 3D data in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional 3D information generators use accelerators or gyro-sensors combined with 2D information, then 3D information can be generated, but the hardware complexity and calculation complexity increase significantly
Solution Approach 1:
The patent extracts and removes the complex accelerator and gyro-sensor components from the 3D information generation system. Instead of using these additional devices, the invention uses only an image sensor to capture reflected light patterns, thereby achieving 3D information generation with reduced hardware complexity while maintaining measurement capability
Solution Approach 2:
The patent uses optical projection to create a copied pattern on the object surface. By projecting a known light pattern and analyzing its reflection, the system generates 3D information through triangulation calculation based on the distorted reflected pattern, eliminating the need for physical accelerators or gyro-sensors
2Measurement precision
If single dot laser beam scanning is used to generate 3D information, then 3D data can be obtained, but the scanning time increases and frame rate becomes too low for real-time applications
Solution Approach 1:
The patent segments the light beam into multiple parallel projection lines forming a structured light pattern. Instead of scanning with a single dot sequentially, the system projects multiple light lines simultaneously across the object, dividing the measurement task into parallel segments that can be captured in a single frame, thereby dramatically increasing frame rate while maintaining measurement precision
Solution Approach 2:
The patent uses periodic projection of structured light patterns at high frequency. By continuously projecting and capturing light patterns in rapid succession, the system achieves real-time 3D information generation with high frame rates suitable for interactive applications, replacing the slow sequential scanning approach
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 solution enables real-time 3D information generation with reduced hardware complexity and cost, improving frame rates for applications like interactive games by using MEMS technology and triangulation calculation.
Implementation Method 1
The light source projects a light beam to an object; the image sensor receives light reflected from the surface of the object
Implementation Method 2
a MEMS mirror reflecting the dot light beam to project a scanning light beam to an object
Implementation Method 3
the image sensor receives light reflected from the surface of the object and converts the reflected light to an electrical signal
Data Source
AI summary
The present invention discloses a 3D information generator for use in an interactive interface. The 3D information generator includes: a MEMS light beam generator having at least one light source for providing a dot light beam and a MEMS mirror for projecting a movable scanning light beam according to the dot light beam to an object; an image sensor for sensing an image of the object to generate a 2D image information; and a processor for generating a distance information by triangulation method according to a reflection result of the scanning light beam scanning on the object, wherein the distance information is combined with the 2D image information to generate a 3D information.