Rangefinder Lens Adjustment via Movable Board
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Solution Overview
Problem
Conventional rangefinders, such as laser meters, face inconvenience in range finding operations due to the need for precise adjustment of the receiving lens in multiple directions, which can lead to insecure lens fixation and potential damage during maintenance, resulting in additional costs.
Innovation Solution
A rangefinder design featuring a main body with adjusting wheels and a movable board allows for precise adjustment of the receiving member along an optical axis, enabling convenient range finding without the need to detach the receiving lens, thus preventing damage and additional costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiving lens is fixed in the receiving lens chamber by adhesive, then the lens can be securely mounted, but the combination becomes insecure after prolonged use and requires detachment during maintenance which can damage the lens
Solution Approach 1:
The patent transitions from a static adhesive fixation to a dynamic adjustable mechanism. The receiving lens is mounted on an adjusting plate that can be moved along guide bars via threaded adjusting wheels, allowing both secure fixation and easy repositioning without detachment or damage.
Solution Approach 2:
The patent divides the lens mounting system into separate functional components: the receiving lens, the adjusting plate, the guide bars, and the adjusting wheels. This segmentation allows the lens to be securely held while enabling easy adjustment and maintenance without damaging the lens itself.
2Measurement precision
If the position of the receiving lens must be adjusted in multiple directions to locate the focal point, then precise focusing can be achieved, but the range finding operation becomes inconvenient
Solution Approach 1:
The patent adds a movable board that translates linear motion from the adjusting wheels into precise positioning of the receiving lens along the optical axis. This dimensional transformation allows accurate focal point location through simple linear adjustment rather than complex multi-directional manipulation.
Solution Approach 2:
The movable board acts as an intermediary mechanism between the adjusting wheels and the receiving lens. It converts the rotational motion of the adjusting wheels into precise linear displacement of the lens, simplifying the operation while maintaining positioning accuracy.
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 solution facilitates precise focusing of reflected laser beams on the receiving member, enhancing the convenience of range finding operations and reducing maintenance-related damages and costs by allowing adjustments without detaching the receiving lens.
Implementation Method 1
The receiving lens receives the reflected laser beams and focuses the reflected laser beams on the receiving member
Implementation Method 2
The first adjusting wheel comprises a first threaded portion. The second adjusting wheel comprises a second threaded portion. The second end of the main body further comprises a third threaded portion engaging the first and second threaded portions
Data Source
AI summary
A rangefinder. A main body includes a first end and a second end opposite to the first end. The second end includes at least one guide bar. A receiving lens is connected to the first end of the main body. A first adjusting wheel and a second adjusting wheel are rotatably connected to the second end of the main body. A movable board is movably fit on the guide bar of the second end of the main body and is disposed between the first and second adjusting wheels. A receiving member is connected to the movable board, receiving light beams received by the receiving lens. The movable board is moved by rotation of the first and second adjusting wheels, driving the receiving member to move on an optical axis.