Monitoring prism with light filtering function
By installing a filter glass plate and a waterproof gasket on the monitoring prism, the problem of point cloud expansion in lidar measurement is solved, the measurement accuracy is improved and the prism is protected, making it suitable for measurement environments in rail transit and urban development.
CN224457118UActive Publication Date: 2026-07-03JIANGYIN XIANGJIANG PHOTOELECTRIC INSTR
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Patent Information
- Application Number
- CN202521488982.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-07-16
AI Technical Summary
Technical Problem
In special measurement environments, when lidar and total station work together, the reflection from the measuring prism causes point cloud expansion, affecting measurement accuracy and making it impossible to accurately collect data.
Method used
A filter glass plate is installed on the monitoring prism to filter out the 905nm laser. Combined with a waterproof gasket and adhesive fixing structure, the corner prism is protected and the influence of interference light is reduced.
Benefits of technology
It improves the measurement accuracy of lidar, reduces point cloud expansion, and protects the prism from damage by dust and grit.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a monitoring prism with a filtering function, which comprises a prism shell, a prism shell front cover and a right-angle support frame, the prism shell is mounted on one side of the top of the right-angle support frame, a pyramid prism is placed in the prism shell, a waterproof gasket I is arranged on one side of the prism shell, and a waterproof gasket II is arranged on the other side of the prism shell. The side, corresponding to the prism shell, of the prism shell front cover is provided with a second waterproof gasket, and a light filtering glass sheet is arranged between the first waterproof gasket and the second waterproof gasket. According to the utility model, the filtering glass sheet capable of filtering 905nm laser is additionally arranged on the prism, so that the problem of point cloud expansion at the position of the reflecting prism in laser radar measurement can be solved. The installation and fixing mode that the light filtering glass sheet is placed between the first waterproof gasket and the second waterproof gasket is used, the additionally-arranged first waterproof gasket and the second waterproof gasket can have the waterproof and dustproof functions, the light filtering glass sheet can further protect the cube-corner prism, the cube-corner prism is prevented from being affected by dust, gravel and the like, and the large face of the cube-corner prism is prevented from being damaged.
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