Lens Grating Segmentation for Naked-Eye 3D Display
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Solution Overview
Problem
Mainstream 3D display technologies, such as parallax-barrier-grid and lens-grating types, suffer from reduced image resolution, decreased screen brightness, and limited viewing distance and angle, which hinder the improvement of image quality in naked-eye 3D displays.
Innovation Solution
A lens grating comprising a plurality of lens units with transparent spacers, where odd-number spacers allow light from first images to transmit to a first viewing area and even-number spacers allow light from second images to transmit to a second viewing area, with each lens unit capable of refracting light to its respective viewing area, and optionally using electrically controlled liquid crystal lenses for adjustable functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If continuously arranged cylindrical lenses are used to control light direction, then binocular parallax is achieved, but image resolution is reduced due to refraction effects
Solution Approach 1:
The lens grating is divided into alternating lens units and transparent spacer regions. The lens units are further segmented into odd-numbered and even-numbered groups, each controlling light to different viewing areas. This segmentation reduces unnecessary refraction and improves image resolution while maintaining 3D capability.
Solution Approach 2:
Different regions of the lens grating are assigned different functions: lens units refract light to control viewing direction, while transparent spacer regions allow direct light transmission without refraction. This local differentiation improves overall image quality by reducing unwanted refraction effects in the spacer regions.
2Adaptability or versatility
If an opaque barrier grid is used to control light transmission, then binocular parallax is produced, but screen brightness decreases due to light blocking
Solution Approach 1:
The opaque barrier grid is replaced with a lens-based optical system. Instead of mechanically blocking light with opaque barriers, the patent uses lens refraction and transparent spacer regions to guide light to appropriate viewing areas, significantly improving screen brightness while maintaining 3D functionality.
3Reliability
If lens units are continuously arranged to cover the display screen, then light control is improved, but manufacturing cost increases
Solution Approach 1:
The lens grating is segmented into alternating lens units and transparent spacer regions. This reduces the total amount of lens material and manufacturing complexity compared to continuous lens coverage, while still providing effective light control for 3D display functionality.
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 enhances image resolution and backlight utilization, reduces crosstalk, and lowers manufacturing costs by allowing light to reach intended areas without unnecessary refraction, thereby improving display brightness and flexibility between 2D and 3D modes.
Implementation Method 1
the lens units are adapted to refract the light emitted from the first images and the light emitted from the second images to the first viewing area and the second viewing area respectively
Data Source
AI summary
Disclosed is a lens grating comprising: a plurality of lens units arranged in a column, any two adjacent lens units having a transparent spacer therebetween, the transparent spacers in the column comprising odd-number spacers and even-number spacers, wherein the odd-number spacers only allow light emitted from first images to transmit through to a first viewing area, and the even-number spacers only allow light emitted from second images to transmit through to a second viewing area The lens units are adapted to refract the light emitted from the first images and the light emitted from the second images respectively to the first viewing area and the second viewing area. A display device is also disclosed, the display device comprising the above lens grating and a display module.