CMOS-OLED Display Lens Integration for Far-Field Imaging
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Solution Overview
Problem
Existing bidirectional OLED display devices can only sense light and acquire images of objects within a very small distance due to their reliance on CMOS technology, resulting in unclear images when objects are far from the display screen.
Innovation Solution
Incorporating a lens, such as an optical micro-lens or adjustable liquid crystal lens, in the image acquisition unit of a CMOS-OLED display device, allowing for adjustable focal distances to converge light signals and enhance image acquisition capabilities over greater distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a lens is added to the image acquisition unit, then the image acquisition distance is increased and imaging quality is improved, but the device complexity increases
Solution Approach 1:
The patent integrates the lens directly into the image acquisition unit structure, nesting the optical component within the existing display device architecture. This allows the lens to be incorporated without adding significant external complexity, as it is embedded within the same structural framework as the display and sensor components.
Solution Approach 2:
The lens acts as an intermediary optical element between the external object and the image sensor. It mediates the light path, focusing light from distant objects onto the sensor plane, thereby enabling clear image acquisition at various distances without requiring the sensor itself to be complex or adjustable.
2Adaptability or versatility
If the focal distance of the lens is made adjustable, then the imaging range is extended to cover various distances, but the device complexity and control difficulty increase
Solution Approach 1:
The patent implements an adjustable focal distance mechanism that allows the lens to dynamically change its focusing properties. This enables the system to adapt to objects at various distances by adjusting the lens focal length, providing versatility in imaging range while maintaining a relatively simple overall structure through controlled dynamic adjustment.
Solution Approach 2:
The focal distance of the lens is made variable through mechanical or optical adjustment mechanisms that change the lens parameter (focal length). This allows the same lens to serve multiple imaging ranges by simply changing its focal distance parameter, avoiding the need for multiple fixed-focus lenses and reducing overall device complexity.
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
This solution enables better image acquisition and display of objects at farther distances, improving the imaging effects of CMOS-OLED display devices by allowing for clear image capture and display of objects at various ranges.
Implementation Method 1
a lens for acquiring light signal is provided in the image acquisition unit
Implementation Method 2
the lens is an adjustable liquid crystal lens formed by nematic liquid crystal
Implementation Method 3
the adjustable liquid crystal lens in the at least one image acquisition unit are integrated on a film material
Data Source
AI summary
An electronic device and an imaging method thereof are described. The electronic device includes at least one display unit and at least one image acquisition unit. The display unit is arranged adjacent to said image acquisition unit. The image acquisition unit is provided with a lens for collecting optical signals and a photosensitive diode unit for converting the optical signals into electrical signals. The lens is arranged in the direction of the incident light of the photosensitive diode unit. The electronic device and the imaging method thereof can implement better imaging effects.