Transflective AR Lens with Aspherical Surfaces
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Solution Overview
Problem
Current augmented reality systems face challenges in creating compact and high-quality optical assemblies for head-mounted displays, as they require multiple lenses, making it difficult to achieve a productive and compact system with superior optical performance.
Innovation Solution
An optical assembly is designed with a first and second reflective mirror, a refractive lens, and a reflective lens with asymmetrical aspherical surfaces and a transflective coating layer, which allows for image light reflection and real light transmission, optimizing the optical path to provide high-quality images while maintaining a compact form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple lenses are used to obtain images of good quality, then optical performance is improved, but device complexity and size increase
Solution Approach 1:
The patent combines multiple optical functions into a single reflective lens with asymmetrical aspherical surfaces and transflective coating. This lens integrates reflection, refraction, and transmission capabilities that traditionally required multiple separate lenses, thereby reducing device complexity while maintaining optical performance
Solution Approach 2:
The reflective lens employs composite structural characteristics with asymmetrical aspherical surfaces and transflective coating layers, combining different optical properties in a single element to achieve superior optical performance without requiring multiple separate lenses
2Manufacturing precision
If multiple lenses are used to obtain images of good quality, then optical performance is improved, but the system becomes less compact
Solution Approach 1:
The patent consolidates multiple optical components into a single reflective lens assembly, reducing the overall volume required for the optical system while maintaining image quality. The integrated design eliminates the need for multiple separate lenses and their associated mounting spaces
3Adaptability or versatility
If a transflective coating layer is used on the reflective lens, then both virtual and real-world images can be seen simultaneously, but manufacturing complexity increases
Solution Approach 1:
The transflective coating layer enables the reflective lens to perform multiple functions simultaneously - reflecting virtual images from the display module and transmitting real-world light. This multi-functionality is achieved through a single coating layer that combines reflective and transmissive properties, allowing users to see both augmented reality content and the real world at the same time
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 optical assembly achieves a compact and high-quality image display, allowing both virtual and real-world images to be seen simultaneously, with improved optical performance and reduced size, suitable for head-mounted displays.
Implementation Method 1
a first reflective mirror configured to reflect image light output from a display module
Implementation Method 2
a second reflective mirror configured to reflect the image light reflected from the first reflective mirror
Implementation Method 3
a refractive lens configured to allow the image light reflected from the second reflective mirror to pass therethrough
Implementation Method 4
a reflective lens having a first surface and a second surface, each of the first surface and the second surface having an asymmetrical aspherical shape, and the reflective lens including a transflective coating layer provided on the first surface and configured to reflect the image light that passed through the refractive lens in a first direction and to transmit real light from a second direction facing the first direction
Data Source
AI summary
Provided are an optical assembly and an electronic apparatus having the optical assembly.The optical assembly includes at least one reflective mirror reflecting image light output form a display module, a refractive lens through which image light reflected from the at least one reflective mirror passes, and a reflective lens having a first surface and a second surface and including a transflective coating layer provided on the first surface and reflecting the image light that passed through the refractive lens in a first direction and transmitting real light from a second direction facing the first direction.