VR Optical Layout for Wide FOV and Real-Time Image Capture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current virtual reality apparatuses face challenges in balancing visual projection quality with miniaturization and lightweight design, particularly due to limited field of view and difficulty in capturing real-time images, which affect user experience.
Innovation Solution
A virtual reality system comprising a first optical system with a reflective polarizing element, quarter-wave plate, and lenses, and a second optical system with lens elements, configured to achieve a field of view ratio of 1<FOVX/FOVY<1.6, and controlled thickness and focal length ratios to enhance performance and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the visual system and perspective system are combined in a virtual reality apparatus, then the user experience is enhanced with both immersion and real-time interaction, but the apparatus size increases making it difficult to achieve miniaturization
Solution Approach 1:
The patent combines the visual system and perspective system into a single integrated apparatus, merging previously separate functions into one compact device that can simultaneously provide virtual reality immersion and real-time environmental capture
Solution Approach 2:
The virtual reality apparatus is designed to perform multiple functions simultaneously - it acts as both a visual display system for virtual content and a perspective system for capturing real-world images, making the device versatile and multi-functional
2Adaptability or versatility
If the perspective system is added to capture real-time images, then interaction capability is improved, but the field of view becomes small affecting user experience
Solution Approach 1:
The patent addresses the limited field of view by incorporating multiple lens elements arranged in a multi-dimensional configuration, expanding the perspective system's coverage area through spatial arrangement rather than simple linear extension
3Volume of moving object
If miniaturization is pursued to reduce apparatus size, then portability is improved, but visual projection quality and real-time image capture capability deteriorate
Solution Approach 1:
The patent optimizes the visual system by carefully selecting and adjusting optical parameters such as focal lengths, lens curvatures, and spacing between elements. The conditional expressions define specific parameter ranges that maintain high projection quality while enabling miniaturization of the overall apparatus
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 system improves user experience by increasing the field of view and reducing the overall size and weight of the apparatus, while maintaining high visual quality and real-time image capture capabilities.
Implementation Method 1
the first element group comprises a reflective polarizing element
Implementation Method 2
the first element group comprises a reflective polarizing element
Implementation Method 3
the first element group comprises a reflective polarizing element, a quarter-wave plate and a first lens
Implementation Method 4
the first optical system comprises a first element group, a second element group, a third element group and a fourth element group in order from a first side to a second side along a first optical axis, wherein the first element group comprises a reflective polarizing element, a quarter-wave plate and a first lens
Data Source
AI summary
The present application discloses a virtual reality system comprising a first optical system and a second optical system. The first optical system comprises first to fourth element groups in order from a first side to a second side along a first optical axis, wherein the first element group comprises a reflective polarizing element, a quarter-wave plate and a first lens; the second element group comprises a second lens; the third element group comprises a third lens; and the fourth element group comprises a fourth lens. The second optical system comprises first to sixth lens elements in order from an object side to an image side along a second optical axis, wherein the first, fourth and sixth lens elements have a negative refractive power; and the second, third and fifth lens elements have a positive refractive power. The maximum field of view FOVX of the second optical system and the maximum field of view FOVY of the first optical system satisfy: 1<FOVX/FOVY<1.6.