Optical Lens With Rotatable Reflectors for AR Light Utilization
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Solution Overview
Problem
Current AR devices suffer from low light utilization and high power consumption due to first-order diffraction of light rays, resulting in poor image contrast and increased energy consumption.
Innovation Solution
An optical lens design featuring a first and second reflector group with rotatable reflectors, allowing for adjustable light propagation and switching between reflective and transmissive states to maximize light transmission and minimize loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a diffraction optical waveguide is employed to change the optical path of light rays, then the light rays can be directed within sight of the user's eyes, but most light rays are lost during the diffraction process resulting in poor image contrast and increased power consumption
Solution Approach 1:
The patent employs a first reflector group with rotatable reflectors that can dynamically adjust their orientation to control the optical path of light rays. This dynamic adjustment allows the system to direct light rays toward the user's eyes while minimizing loss, replacing the static diffraction waveguide with a controllable reflective system.
Solution Approach 2:
The patent replaces the diffraction-based optical waveguide system with a reflective system using rotatable reflectors. This substitution eliminates the need for complex diffraction structures and enables more efficient light ray utilization by controlling reflection angles rather than relying on diffraction patterns.
2Ease of operation
If a diffraction optical waveguide is employed to change the optical path of light rays, then the light rays can be directed within sight of the user's eyes, but the power consumption of the projection system increases
Solution Approach 1:
The rotatable reflectors in the first reflector group enable dynamic control of light ray directions, allowing the projection system to efficiently direct light to the user's eyes. This dynamic control reduces the need for high power consumption diffraction structures and enables more energy-efficient optical path management.
Solution Approach 2:
The patent replaces the energy-intensive diffraction optical waveguide with a reflective system using rotatable reflectors. This substitution reduces power consumption by eliminating the need for high-power diffraction gratings and waveguide structures, while maintaining the capability to direct light rays within the user's field of view.
3Ease of operation
If a diffraction optical waveguide is employed to change the optical path of light rays, then the light rays can be directed within sight of the user's eyes, but only a very small part of the light rays emitted by the projection system can be utilized
Solution Approach 1:
The rotatable reflectors enable dynamic adjustment of light ray directions, maximizing the utilization of emitted light rays. By continuously optimizing the reflection angles, the system can direct a larger portion of light rays toward the user's eyes, significantly improving light utilization efficiency compared to static diffraction waveguides.
Solution Approach 2:
The patent replaces the diffraction-based system with a reflective system using rotatable reflectors. This substitution improves light ray utilization efficiency by enabling precise control of reflection angles to direct maximum light toward the user's eyes, rather than relying on the limited angular distribution of diffraction patterns.
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
Improves light utilization efficiency, enhances image contrast, and reduces power consumption by optimizing light propagation and reflection, providing a better user experience.
Implementation Method 1
a first reflector group (200), and a second reflector group (300)... The second reflector group (300) is configured to receive and reflect light rays that are directed toward the first reflector group (200) and reflected at the first reflector group (200)
Implementation Method 2
Each of the reflectors in the second reflector group (300) is rotatably mounted onto the lens body (100)... In the process of changing the optical path in this way, light rays ultimately received by the user undergo first-order diffraction on a single side at least twice
Data Source
AI summary
An optical lens and optical glasses. The optical lens includes a lens body, a first reflector group, and a second reflector group. The first reflector group and the second reflector group are both disposed in the lens body. The second reflector group is configured to receive and reflect light rays that are directed toward the first reflector group and reflected at the first reflector group. The first reflector group and the second reflector group both include a plurality of reflectors arranged in rows and columns. Each of the reflectors in the second reflector group is rotatably mounted onto the lens body.