Telescope Lens Group Oscillation for Image Stabilization
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Solution Overview
Problem
Conventional optical devices struggle to effectively handle significant image shake while maintaining good optical performance, as increasing the correction angle leads to image deterioration and reduced optical performance.
Innovation Solution
An optical device configuration featuring an objective optical system with a first, second, and third lens group, where the second and third lens groups rotate together around a point on the optical axis to correct image shake, maintaining good optical performance and minimizing image changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the correction angle is increased to handle significant image shake, then the image-shake correcting capability is improved, but the optical performance deteriorates due to significant image change caused by the shift of the correction optical system
Solution Approach 1:
The patent applies dynamics by making the correction optical system oscillate rather than shift statically. The oscillation mechanism allows the system to dynamically adjust and compensate for image shake while maintaining stable optical performance throughout the correction range, resolving the contradiction between correction capability and performance stability.
Solution Approach 2:
The patent changes the operational parameters of the correction optical system by oscillating it at controlled amplitudes and frequencies. This parameter change allows the system to achieve larger effective correction angles without the detrimental effects of static shifting, thereby improving image-shake correction while maintaining optical performance.
2Stability of the object's composition
If the correction optical system is oscillated to control image change, then the image stability is improved, but the optical performance drops from the original performance, making it difficult to increase aperture
Solution Approach 1:
The patent utilizes dynamic oscillation of the correction optical system to achieve image stabilization. By controlling the oscillation characteristics, the system maintains stable image output while preserving original optical performance, enabling larger aperture designs that were previously limited by performance degradation.
3Stability of the object's composition
If the correction optical system is rotated to control image change, then the image stability is improved, but the correction angle decreases and the device size increases to increase the correction angle
Solution Approach 1:
The patent employs dynamic oscillation instead of static rotation to achieve image stabilization. This approach provides sufficient correction angle without requiring large rotational movements, thereby avoiding increased device size and complexity while maintaining effective image stabilization.
Data Source
AI summary
Provided is a telescope (TSC) having: an objective optical system (OB); an erecting optical system (PR) for erecting an image formed by the Objective optical system (OB); and an eyepiece optical system (EP) for observing the image which is formed by the Objective optical system (OB) and erected by the erecting optical system (PR). The objective optical system (OB) includes, in order from an object, a first lens group (G1) having positive or negative refractive power, a second lens group (G2) having positive refractive power, and a third lens group (G3) having negative refractive power. The second lens group (G2) and the third lens group (G3) rotate together around a point (O) on the optical axis of the Objective optical system (OB) in order to correct the image.