Double-end laser rangefinder coaxial alignment
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Solution Overview
Problem
Traditional double-end laser rangefinders face challenges with measurement accuracy due to imperfect coaxial alignment of optical axes, which is time-consuming to adjust and can deviate over time, affecting production efficiency and long-term measurement precision.
Innovation Solution
A double-end laser rangefinder design featuring a one-piece optical mechanism with coaxially mounted lens groups on a strong main frame, eliminating the need for manual coaxial adjustment and relying on glue for alignment, simplifying production and ensuring long-term stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If two light mechanisms are separately mounted on two main frames using securing glue, then the device can be assembled, but the optical axes may deviate over time due to glue aging or external forces, worsening measurement accuracy
Solution Approach 1:
The patent merges two separate main frames into a single integrated main frame structure. The two light mechanisms are mounted on this unified frame with pre-designed mounting holes and positioning structures, ensuring the optical axes remain coaxial without relying on securing glue. This integration eliminates the alignment deviation problem while maintaining ease of assembly through standardized mounting features.
2Measurement precision
If manual coaxial adjustment is performed during assembly, then measurement accuracy can be improved, but production time increases significantly, reducing productivity
Solution Approach 1:
The patent incorporates preliminary action by pre-designing the mounting structures on the integrated main frame with precisely positioned mounting holes and alignment features. The optical axes are pre-aligned during frame manufacturing, so that during assembly, the light mechanisms can be directly mounted without requiring manual coaxial adjustment. This preliminary preparation ensures measurement accuracy while dramatically reducing production time.
3Ease of manufacture
If a thin layer of glue is used to secure light mechanisms, then assembly is simplified, but the optical axes cannot maintain coaxial alignment during long-term use under external forces
Solution Approach 1:
The patent applies segmentation by separating the alignment function from the securing function. The integrated main frame provides precise alignment through its structural design with positioning holes and mounting features. Securing is achieved through mechanical fastening elements that attach to these pre-designed features. This segmentation allows each function to be optimized independently: alignment through frame geometry and securing through mechanical fasteners, eliminating reliance on glue for both purposes.
Data Source
AI summary
A double-end laser rangefinder includes a ranging board, a control board, a key board which are integrated to form a mainboard. Two lens mounting bases are coaxially mounted at two ends of a main frame. First end and second end with lens-mounting bases are coaxially mounted in the main frame. Two lens groups are mounted on the two lens-mounting bases respectively. Each lens group includes a transmitting lens and a receiving lens. The receiving lenses on the first end and the second end are coaxial, the transmitting lenses on the first end and the second end are also coaxial. Coaxial arrangement of light paths of the two transmitting lenses and the two receiving lenses is realized through the main frame.