Dual Image Stabilization Units in Binoculars
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Solution Overview
Problem
Existing optical systems, such as binoculars and telescopes, face challenges in stabilizing images due to trembling movements and rotational shake, leading to blurred perceptions, as current stabilization methods often require precise alignment of image stabilization units with rotation angle detectors, which can be affected by thermal noise and differ in noise components between housings.
Innovation Solution
A method involving the use of rotation angle detectors in both housings of an optical system, where detector signals are transformed and averaged to synchronize image stabilization units, reducing noise and ensuring symmetrical distribution of remaining tremors across both housings, allowing for independent stabilization of each eye's optical subsystem.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single image stabilization unit is used for both optical subsystems, then device complexity is reduced, but the unit must be at least as wide as the distance between the first and second optical subsystems, increasing the overall size
Solution Approach 1:
The patent divides the single image stabilization function into two separate image stabilization units, with each unit dedicated to stabilizing one optical subsystem. This segmentation allows each stabilization unit to be compact in width while collectively providing stabilization for both eyes, resolving the contradiction between reduced complexity and increased size.
2Measurement precision
If rotation angle detectors are precisely aligned with image stabilization units, then measurement precision is improved, but the system becomes sensitive to thermal noise and requires precise alignment between housings
Solution Approach 1:
By placing rotation angle detectors in both housings and using separate image stabilization units for each housing, the system localizes the measurement and stabilization functions to each housing. This eliminates the need for precise inter-housing alignment and reduces sensitivity to thermal noise, as each housing operates independently with its own detector-stabilization unit pair.
3Adaptability or versatility
If the hinge allows adjustment of pupillary distance, then adaptability is improved, but the relative position of housings changes, affecting the alignment between image stabilization units and rotation angle detectors
Solution Approach 1:
The patent places rotation angle detectors in both the first and second housings, creating independent measurement systems in each housing. This segmentation means that when the hinge adjusts the relative position of housings, each housing's detector-stabilization unit alignment remains independent and unaffected by the other housing's position, maintaining manufacturing precision while preserving adaptability.
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 method effectively reduces image noise and tremors by synchronizing the stabilization units, providing a more stable image perception without the need for precise alignment of rotation axes, thus improving image clarity and user experience.
Implementation Method 1
a first movement of the optical system is detected by means of a first rotation angle detector arranged in the first housing... a second movement of the optical system is detected by means of a second rotation angle detector arranged in the second housing
Implementation Method 2
a first image stabilization unit arranged in the first housing together with at least one first rotation angle detector... a second image stabilization unit arranged in the second housing together with at least one second rotation angle detector... moving the first image stabilization unit based on the second mean value, and moving the second image stabilization unit based on the first mean value
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
The invention relates to a method for setting a first position of a first image stabilization unit (16A) in a first housing (2) of an optical system (1) and/or a second position of a second image stabilization unit (16B) in a second housing (3) of the optical system (1). The method comprises detecting movement of the optical system (1) by means of a first rotation angle detector and generating a first detector signal based on a first measurement coordinate system of the first rotation angle detector, detecting the movement of the optical system (1) by means of a second rotation angle detector and generating a second detector signal based on a second measurement coordinate system of the second rotation angle detector, and transforming the first detector signal into a third detector signal based on the second measurement coordinate system of the second rotation angle detector.Transforming the second detector signal into a fourth detector signal based on the first measurement coordinate system of the first rotation angle detector, calculating a first mean value from the third detector signal and the second detector signal, calculating a second mean value from the fourth detector signal and the first detector signal, moving the first image stabilization unit (16A) based on the second mean value, and moving the second image stabilization unit (16B) based on the first mean value.