Surveying Instrument Optical Axis Deflector for Rapid Target Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current surveying instruments with high-magnification telescopes have narrow field angles and high inertia, making it difficult to quickly rotate and track objects, leading to reduced workability and increased time to reacquire targets once they leave the visual field.
Innovation Solution
A surveying instrument system with a distance measuring light projecting module, a light receiving module, an optical axis deflector, a wide-angle image pickup module, a narrow-angle image pickup module, and an arithmetic control module that controls the optical axis deflection and distance measurement, enabling fast object sighting and image acquisition with improved focus depth and tracking capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high-magnification telescope is used for distance measurement, then measurement precision is improved, but the field angle becomes very narrow and the telescope inertia increases, making it difficult to rotate quickly and track moving objects
Solution Approach 1:
The patent divides the imaging function into two separate modules: a wide-angle image pickup module for capturing the broader scene and a narrow-angle image pickup module for detailed viewing. This segmentation allows the system to maintain high measurement precision with the narrow-angle module while using the wide-angle module to quickly locate and track moving objects, thereby resolving the contradiction between measurement precision and rotation speed.
Solution Approach 2:
The patent introduces an optical axis deflector as an intermediary component that can rapidly change the optical axis direction without moving the entire telescope assembly. This deflector acts as a mediator between the fixed high-precision telescope and the need for quick directional changes, enabling fast tracking while maintaining measurement precision.
2Measurement precision
If a high-magnification telescope with narrow field angle is used, then measurement precision is improved, but the time to reacquire a target that leaves the visual field increases significantly
Solution Approach 1:
The patent segments the imaging functionality into wide-angle and narrow-angle modules. The wide-angle module continuously monitors the broader area to detect when a target leaves the narrow visual field, while the narrow-angle module maintains precise measurement capability. This segmentation eliminates the time loss associated with manually or mechanically searching for the target again.
Solution Approach 2:
The patent ensures continuous monitoring by having the wide-angle image pickup module operate simultaneously with the narrow-angle module. This continuous surveillance capability means the system never loses track of the target, maintaining uninterrupted measurement capability and eliminating downtime for target reacquisition.
3Stability of the object's composition
If high rigidity is required for the supporting mechanism of the telescope, then measurement stability is improved, but the supporting mechanism itself has large inertia, making high-speed rotation difficult
Solution Approach 1:
The patent separates the stable measurement function (performed by the rigid telescope assembly) from the fast-response function (performed by the optical axis deflector and wide-angle camera). This segmentation allows the supporting mechanism to maintain high rigidity for stability while the deflector provides the necessary speed for tracking, resolving the contradiction between stability and rotation speed.
Solution Approach 2:
The optical axis deflector serves as an intermediary that absorbs the rotational movement requirements, allowing the main telescope assembly to remain stationary and stable. The deflector mediates between the stable but slow-to-move telescope and the need for rapid directional changes, enabling both stability and speed.
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 system allows for rapid object sighting and tracking, simplifies focus adjustment, and enhances the ability to maintain images of measuring points, even when objects move quickly, by synchronizing distance measurements with image acquisition and associating wide-angle and narrow-angle images based on optical axis deflection angles.
Implementation Method 1
a distance measuring light projecting module configured to project a distance measuring light
Implementation Method 2
a light receiving module configured to receive a reflected distance measuring light
Implementation Method 3
an optical axis deflector which is provided at a common part of a distance measuring optical axis and a light receiving optical axis and integrally deflects the distance measuring optical axis and the light receiving optical axis
Implementation Method 4
a wide-angle image pickup module having approximately the same field angle as a maximum deflection range of the optical axis deflector
Implementation Method 5
a narrow-angle image pickup module having an optical axis a part of which is common to the distance measuring optical axis and having a field angle narrower than the field angle of the wide-angle image pickup module
Implementation Method 6
the distance measurement calculating module is configured to perform a distance measurement of a measuring point based on a light emission timing of the distance measuring light and a light reception timing of the reflected distance measuring light
Data Source
AI summary
A surveying instrument comprises a distance measuring light projecting module, a light receiving module, an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a wide-angle image pickup module, a projecting direction detecting module configured to detect an optical axis deflection angle and a deflecting direction, a narrow-angle image pickup module, a distance measurement calculating module and an arithmetic control module, wherein the arithmetic control module is configured to control the optical axis deflector and the distance measurement calculating module, wherein the distance measurement calculating module is configured to perform a distance measurement of a measuring point based on a light emission timing of a distance measuring light and a light reception timing of a reflected distance measuring light, and wherein the narrow-angle image pickup module is configured to acquire a narrow-angle image with the distance measuring optical axis as an image center.