Hamamatsu PSD Technical Notes
Light point position, triangular ranging and position-sensitive detection principles; PSD hardware performance is not transferred to camera implementation
Verification date: 2026-10-24
View original public information →LSP318 · Sensor calibration and quality diagnosis · Optical measurement and instrument calibration
Reusable modules
Reproducibility evaluation of repeated clamping by different operators
Facing the optical positioning tooling, taking the position of the light spot on the target surface as the observation route, it is planned to output operator group coordinate statistics. The page is for project evaluation and does not mean that the development has been completed or has been accepted on site.
Project Judgment Summary
Product/DeviceOptical positioning tooling
Measure routeXY · Target surface light spot position
Ability GradingReusable modules
Verification statusThe actual machine/product domain acceptance of this scenario has not been carried out
Scene nature:Similar potential application scenarios for laser spots. The potential application scenario has not yet been developed into a complete product system; the actual machine/product domain acceptance of this scenario has not been carried out. The actual product/product domain acceptance quantity in catalog statistics is 0.
Business tasks and intended output
- target audience
- Optical positioning tooling: target spot position
- pseudo output
- Operator group coordinate statistics
- Applicable conditions
- Complete measuring tool R&R requires A96 and balanced design
- priority
- General extension. Verification needs to be completed according to the listed optical conditions, calibration and samples.
Imaging input and algorithm routing
Imaging and device conditions
Fix the camera and target surface, record the exposure and gain, and cover the light spot and background in the field of view. Standard motion stage, radiometric reference and controlled reflectance/background conditions
XY · Target surface light spot position
Fix the camera and target surface, record exposure and gain, and cover the light spot and background in the field of view
- A101Adaptive threshold laser spot grayscale centroid
- A107Laser spot quality and usability diagnostics
- A112Laser spot two-dimensional repeatability and coverage ellipse
Existing algorithmic evidence:A101–A112 only complete analytical synthesis spot and controlled geometry verification; see laser_spot_benchmark.json
Current capabilities and capabilities to be supplemented
Reusable modules
Existing modules can be used as hosts
Existing light point positioning, quality diagnosis or statistical modules can be used as the main calculation basis; ROI, calibration, threshold and interface verification still need to be completed by device.
Gaps in this scenario:ROI, ruler/plane calibration and reference point definition are required; only the two-dimensional position of the target surface can be directly observed. Complete gage R&R requires A96 and balanced design. The output is measurement evidence and failure boundaries, and the calibration certificate requires complete procedures.
Route-level gaps:Requires ROI, ruler/plane calibration and reference point definition; can only directly observe the two-dimensional position of the target surface
"Reusable modules" only describe the relative development volume and do not constitute a commitment to accuracy, tempo, stability or delivery time.
Verification methods and acceptance prerequisites
Test independently with a two-dimensional displacement stage and a fixed reference point, reporting center error P95, missed detections and false detections. Retain original frames, reference values and independent working conditions
| Acceptance items | Evidence required for project confirmation | Current status |
|---|---|---|
| Inputs and samples | Real device original frames, normal/abnormal samples, exposure and light path conditions, sample grouping and set aside | Not provided, waiting for project input |
| Magnitude and Error | Independent reference value, calibration record, error statistical caliber and mutual confirmation threshold | Not verified |
| Exceptions and boundaries | Anticipated handling of missed detections, false detections, overexposure, occlusion, reflection, out-of-view and communication abnormalities | To be defined |
| System integration | Interface, time synchronization, deployment platform, tempo, log, version and continuous running record | Not integrated |
Evidence sources and citation boundaries
The source supports measurement principles or similar applications; the module combination, device and acceptance method in this scenario are engineering derivation, and product verification has not been completed.
Micro-Epsilon Laser Triangulation Principle
Transmitting, receiving imaging and distance measurement after calibration
Verification date: 2026-10-24
View original public information →Research on Speckle Uncertainty of Laser Triangulation
Effect of speckle on position and distance uncertainty
Verification date: 2026-10-24
View original public information →Source usage scope:The public information is used to support the measurement principle or the existence of similar applications, and does not prove that this scenario has been developed, deployed or accepted by Jishi Technology.
Project consultation
xuzhiyang0928@gmail.com
Define the Development Scope with Samples and Device Requirements
Reproducibility evaluation of repeated clamping by different operators
Please describe the task object, original picture or video, target indicators, device platform, interface and sample situation.
Phone: 13910119357xuzhiyang0928@gmail.com