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 →LSP317 · Sensor calibration and quality diagnosis · Optical measurement and instrument calibration
Partially reusable
Cross-sensitivity test on changes in target inclination angle
For the point ranging system, the point laser triangular displacement is used as the observation route, and the inclination angle and distance deviation are intended to be output. 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/Devicepoint ranging system
Measure routeTRI·Point laser triangular displacement
Ability GradingPartially reusable
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
- Point ranging system: point laser triangular displacement
- pseudo output
- Inclination and distance deviation
- Applicable conditions
- The reference distance needs to be consistent
- 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
By fixing the laser emission axis and the receiving camera baseline, separable light spots can be formed on the target surface. Standard motion stage, radiometric reference and controlled reflectance/background conditions
TRI·Point laser triangular displacement
By fixing the laser emission axis and the receiving camera baseline, the target surface can form separable light spots.
- A97Weighted least squares linear calibration
- A100First-order sensitivity uncertainty propagation
- A101Adaptive threshold laser spot grayscale centroid
- A103Logarithmic quadratic surface sub-pixel spot center
- A107Laser spot quality and usability diagnostics
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
Partially reusable
Requires calibration, synchronization or integration
The light point detection front-end or timing statistics module can be reused, but the project still needs to add geometric calibration, time synchronization, motion compensation or equipment system integration.
Gaps in this scenario:It is necessary to add point laser ray intersection or one-dimensional nonlinear distance calibration adaptation; A97 only has a linear area, and A21 is a laser plane interface. The reference distance needs to be consistent. The output is measurement evidence and failure boundaries, and the calibration certificate requires complete procedures.
Route-level gaps:It is necessary to add point laser ray intersection or one-dimensional nonlinear distance calibration adaptation; A97 is only in the linear area, and A21 is the laser plane interface
"Partially reusable" only describes the relative development volume and does not constitute a commitment to accuracy, tempo, stability or delivery time.
Verification methods and acceptance prerequisites
Use gauge blocks and stages to cover range and surface conditions and independently report physical error, repeatability, and speckle effects. 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
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Define the Development Scope with Samples and Device Requirements
Cross-sensitivity test on changes in target inclination angle
Please describe the task object, original picture or video, target indicators, device platform, interface and sample situation.
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