Asymmetric Binocular Optical Systems for Resolving Power Balance
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Solution Overview
Problem
Conventional binocular image display apparatuses face challenges in providing a wide angle of view with high resolution and comfortable image fusion, as existing optical systems often result in significant differences in resolving power between the left and right eyes, leading to viewer fatigue and difficulty in stereoscopic viewing.
Innovation Solution
The binocular image display apparatus employs two viewing optical systems with different horizontal resolutions, where the left-eye system has higher optical performance on the left side and lower performance on the right side, and vice versa, to minimize the difference in resolving power between the two eyes, especially at the ends of the fused image area, and uses a relay optical system and eyepiece optical system to enhance the viewing angle and reduce aberrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical systems are used in binocular image display apparatus, then the structure is simple, but the difference in resolving power between left and right eyes is significant, causing viewer fatigue
Solution Approach 1:
The patent applies local quality by making the optical performance asymmetric within each viewing optical system. Specifically, the left-eye system has higher optical performance on the left side and lower on the right side, while the right-eye system has lower performance on the left side and higher on the right side. This local variation in optical quality compensates for the natural asymmetry in binocular viewing, reducing the overall difference in resolving power between the two eyes and minimizing viewer fatigue.
Solution Approach 2:
The patent employs asymmetry by deliberately designing the optical performance distribution to be asymmetric across the two viewing systems. Rather than making both systems identical, the patent creates complementary asymmetric patterns where each system's strong and weak regions are positioned to balance the other, thereby achieving more uniform binocular resolution.
2Area of stationary object
If the viewing angle is widened, then the field of view increases, but the resolution and image quality may deteriorate
Solution Approach 1:
The patent applies local quality by concentrating higher optical performance in specific regions of the viewing field. Each viewing optical system is designed with non-uniform optical characteristics, providing higher resolution where needed (in the fused image area) and accepting lower resolution in other regions, thereby maintaining overall image quality while expanding the viewing angle.
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 configuration allows for a wider viewing angle and easier image fusion with reduced viewer fatigue, as the apparatus maintains a smaller difference in resolution between the left and right eyes, enhancing the overall performance and comfort during binocular viewing.
Implementation Method 1
two viewing optical systems, one for the left eye and one for the right eye, for projecting original images on the image display devices onto the left and right eyeballs of the viewer
Data Source
AI summary
The invention provides a binocular image display apparatus provided which comprises:two image display devices corresponding to the left and right eyeballs of a viewer, respectively, andtwo viewing optical systems, one for the left eye and one for the right eye, for projecting original images on the image display devices onto the left and right eyeballs of the viewer. In the left-eye and right-eye viewing optical systems, an observation image projected onto one eyeball includes a fused image area wherein the observation image overlaps a part of an observation image projected onto another eyeball and a monocular area other than the fused image area, and inside resolution in a horizontal direction with respect to a visual axis of the viewer is set higher than outside resolution.