Lens Array Module Asymmetry Reduces Crosstalk
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Solution Overview
Problem
Conventional projection apparatuses suffer from limited light utilization efficiency due to crosstalk phenomena caused by obliquely incident illumination beams, which result in energy loss and reduced image brightness.
Innovation Solution
A lens array module design where the center of curvature of first lens surfaces deviates away from the reference point on the light incident surface and the center of curvature of second lens surfaces deviates towards the reference point on the light emitting surface, reducing the projection range exceeding the area of corresponding second lens surfaces, thereby minimizing crosstalk and enhancing light utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional two lens arrays are used to enhance light utilization efficiency, then light transmission is improved, but crosstalk phenomena occur causing energy loss and reduced image brightness
Solution Approach 1:
The patent applies asymmetry by deviating the center of curvature of first lens surfaces away from the reference point and the center of curvature of second lens surfaces toward the reference point. This asymmetric configuration optimizes light transmission paths to reduce crosstalk between adjacent pixels while maintaining high light utilization efficiency, thereby resolving the contradiction between improving light transmission and reducing energy loss.
2Area of stationary object
If obliquely incident illumination beams are transmitted through conventional lens arrays, then light coverage is improved, but crosstalk increases causing stray light and reduced image quality
Solution Approach 1:
The patent applies local quality by configuring different center of curvature positions for lens surfaces at different locations. Specifically, first lens surfaces have their center of curvature deviated away from the reference point while second lens surfaces have their center of curvature deviated toward the reference point. This localized optimization ensures that obliquely incident beams are properly directed to reduce stray light and crosstalk while maintaining comprehensive light coverage.
3Illumination intensity
If lens arrays are designed to transmit light efficiently, then brightness is improved, but crosstalk phenomena cause energy loss reducing overall efficiency
Solution Approach 1:
The patent resolves this contradiction by implementing asymmetric center of curvature configuration where first lens surfaces deviate away from the reference point and second lens surfaces deviate toward the reference point. This asymmetric design optimizes the balance between achieving high image brightness through efficient light transmission and minimizing energy loss from crosstalk phenomena, thereby simultaneously improving both illumination intensity and productivity.
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 design effectively reduces crosstalk and increases image brightness by improving light utilization efficiency, with approximately 20% higher energy transmission compared to conventional lens arrays.
Implementation Method 1
A lens array module includes a light incident surface, a light emitting surface, a plurality of first lens surfaces, and a plurality of second lens surfaces
Data Source
AI summary
A lens array module includes a light incident surface, a light emitting surface opposite to the light incident surface, and a plurality of first and second lens surfaces. The first lens surfaces are arranged on the light incident surface to form into an array. The second lens surfaces are arranged on the light emitting surface to form into an array. The center of curvature of each of the first lens surfaces located at two opposite sides of a first reference point on the light incident surface deviates away from the first reference point in a direction parallel to a first reference axis, and the center of curvature of each of the second lens surfaces located at two opposite sides of a second reference point on the light emitting surface deviates toward the second reference point in a direction parallel to the first reference axis. A projection apparatus is also provided.