Observation Telescope Optics With Lateral Image Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable long-range optical devices like binoculars or observational telescopes experience usability issues due to high magnification causing motion blurriness from hand-held wobbling, and existing image stabilization methods are inadequate.
Innovation Solution
A telescope optics design with an objective lens system comprising a first lens group with positive refractive power, a second lens group with negative power adjustable in parallel to the optical axis for focusing, and a third lens group with negative power adjustable perpendicularly to stabilize images, allowing for a slim beam path through a prism erecting system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high magnification is used in portable long-range optical devices, then the distant object appears enlarged, but motion blurriness occurs due to hand-held wobbling
Solution Approach 1:
A movable lens group is introduced as an intermediary element between the fixed lens groups. This movable lens group acts as a mediator that compensates for the effects of hand-held wobbling by adjusting its position based on sensor feedback, thereby stabilizing the image without reducing the magnification capability of the optical system
Solution Approach 2:
A sensor-based feedback control system is implemented where sensors detect the amplitudes and directions of tilting of the optical axis, and this information is used to control actuators that move the lens group in the opposite direction to compensate for the wobbling, creating a closed-loop control system that maintains image stability
2Reliability
If a movable lens is added for image stabilization, then image stability improves, but device complexity increases
Solution Approach 1:
The movable lens group serves multiple functions: it acts as part of the optical imaging system while simultaneously functioning as the image stabilization element. This multi-functionality reduces the need for separate stabilization components, thereby limiting the increase in device complexity
Solution Approach 2:
The image stabilization function is merged with the existing optical lens system rather than being implemented as a separate mechanical stabilization mechanism. The movable lens group is integrated into the optical path and works in conjunction with the fixed lens groups, combining imaging and stabilization functions in a unified system
3Reliability
If a lens group is made movable for image stabilization, then image stabilization is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent replaces complex mechanical positioning mechanisms with sensor-based detection and control systems. Instead of relying on purely mechanical precision for lens positioning, electronic sensors detect the optical axis tilting and control the lens movement, substituting mechanical precision requirements with electronic control precision
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 design achieves high optical quality with minimal aberrations and effectively stabilizes images against tilting, enhancing user-friendliness at high magnifications.
Implementation Method 1
the magnification is defined as the ratio of the tangent of the visual angle with an instrument and the tangent of the visual angle without an instrument. Within this meaning, the distant object is depicted in an enlarged manner for the observer's eye by means of the long-range optical device
Implementation Method 2
Sensor-detected amplitudes and directions of tilting of the optical axis upon shaking deliver data for controlling actuators by means of which the movable lens is displaced in the opposite direction for compensation
Data Source
AI summary
The invention relates to a telescope optics for a telescopic observational instrument having an objective lens, having a prism erecting system and having an eyepiece lens, wherein an image of an object generated by the objective lens is located between the prism erecting system and the eyepiece lens, and wherein the objective lens, in an order starting from the object side, comprises a first lens group G1 with a positive refractive power, a second lens group G2 with a negative refractive power and a third lens group G3, and wherein the second lens group G2 is adjustable in parallel to an optical axis for focusing, and wherein at least one lens with a negative refractive power of the third lens group G3 is adjustable perpendicularly to the optical axis for changing the position of the image, and wherein the third lens group G3 has a negative refractive power.