Optical Eyepiece Path Superposition for Low-Distortion HMD Imaging
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Solution Overview
Problem
Existing optical systems are fixed-focus and require specialized knowledge, are heavy, and bulky, limiting their accessibility to a broader user base.
Innovation Solution
An optical eyepiece system capable of superimposing optical paths, comprising an image surface, auxiliary optical path, and main optical path with specific lens configurations and a spectroscope, allowing for high-definition, distortion-free imaging through a positive, negative, and positive lens combination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-focus optical system is used, then the optical path is simple, but the adaptability to different user requirements is poor
Solution Approach 1:
The patent implements dynamic focus adjustment by making the optical path length可调 (adjustable). The optical system transitions from a fixed-focus design to a dynamic one where the focal length can be changed according to different observation requirements, allowing users to adjust focus for objects at different distances without changing the basic optical structure
Solution Approach 2:
The optical system is designed to serve multiple functions: it can observe both distant celestial objects and nearby objects by adjusting the optical path length. This multi-functionality allows a single device to replace multiple fixed-focus instruments, improving versatility while maintaining relatively simple optical components
2Measurement precision
If traditional optical instruments are designed for high performance, then the imaging quality is high, but the weight and volume increase
Solution Approach 1:
The optical system is divided into modular components: an objective lens assembly, an adjustable optical path section, and an eyepiece. This segmentation allows each component to be optimized independently for lightweight construction while maintaining overall imaging quality. The adjustable optical path section can be compactly designed since it only needs to provide focus adjustment rather than complex imaging functions
Solution Approach 2:
The patent changes the optical path length parameter to achieve focus adjustment instead of using multiple lens elements or complex mechanical focusing mechanisms. By varying a single parameter (optical path length) rather than changing optical components, the system maintains high imaging quality with minimal weight increase
3Measurement precision
If traditional optical instruments are designed for high performance, then the imaging quality is high, but the volume increases
Solution Approach 1:
The adjustable optical path section is designed to nest within or alongside the fixed optical components. The optical path can be extended or retracted in a compact manner, allowing the system to achieve variable focus without requiring a large overall volume. The optical components are arranged to maximize space utilization
4Measurement precision
If optical instruments require specialized knowledge for operation, then the imaging quality can be optimized, but the ease of operation decreases
Solution Approach 1:
The optical system provides self-adjusting focus through a simple mechanical or manual adjustment mechanism that automatically maintains optimal focus as the optical path length changes. This eliminates the need for users to understand complex optical alignment or focus calibration, making the instrument easy to operate while maintaining imaging quality
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
Enables clearer, high-quality imaging with reduced distortion and weight, making optical instruments more accessible to users without specialized knowledge.
Implementation Method 1
the optical axis of the main optical path is reflected by the spectroscope and is superimposed with the auxiliary optical path transmitted by the spectroscope
Implementation Method 2
the main optical path comprises a first lens, a second lens, and a third lens which are arranged sequentially from the spectroscope to a micro image display in an optical axis direction
Data Source
AI summary
An optical eyepiece system capable of superimposing optical paths and a head-mounted display device. The optical eyepiece system comprises an image surface (103), an auxiliary optical path (T), a spectroscope (101), and a main optical path (A) which are sequentially connected; an optical axis of the image surface (103) coincides; an optical axis of the main optical path (A) is mutually perpendicular to the optical axis of the auxiliary optical path (T); and the optical axis of the main optical path (A) is reflected by the spectroscope (101) and is superimposed with the auxiliary optical path (T) transmitted by the spectroscope (101). An image displayed on the micro image display (102) and a physical object image captured by an object shape observation and photographing apparatus are displayed in a superimposing mode, and characteristics of being clearer in imaging, small in distortion, and high in imaging quality are achieved.