IBM Photothermal Deflectometry Research
The principle of probe beam deflection caused by refractive index gradient
Verification date: 2026-10-24
View original public information →LSP264 · Materials and Chemical Photothermal Research · Chemical Droplet Wetting and Interface
Need to add new core
Refractive deflection calibration under temperature controlled conditions
Facing the transparent salt solution sample, the transmission deflection and refraction inversion are used as the observation route, and the deflection and reference refractive index 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/DeviceClear salt solution sample
Measure routeREFRACT · Transmission deflection and refraction inversion
Ability GradingNeed to add new core
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
- Transparent salt solution samples: transmission deflection and refractive inversion
- pseudo output
- Deflection and reference refractive index
- Applicable conditions
- Composition/temperature cannot be unknown at the same time
- priority
- Special development. The measurement/control core needs to be supplemented and verified according to the special project approval
Imaging input and algorithm routing
Imaging and device conditions
A transmission device for which the angle of incidence, optical path length, medium boundary and temperature are known. Pump/probe optical path, synchronized modulation and controlled temperature environment
REFRACT · Transmission deflection and refraction inversion
Transmission device with known incident angle, optical path length, medium boundary and temperature
- A101Adaptive threshold laser spot grayscale centroid
- A103Logarithmic quadratic surface sub-pixel spot center
- A107Laser spot quality and usability diagnostics
- A111laser spot pixel to camera view angle conversion
- 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
Need to add new core
Need to add core computing
Light point extraction can only be used as an observation front-end, and core capabilities such as three-dimensional reconstruction, closed-loop control, wavefront or physical quantity inversion need to be developed and verified separately.
Gaps in this scenario:Snell/ray tracing and parameter identifiability analysis need to be added; deflection cannot uniquely prove composition or concentration. The composition/temperature cannot be unknown at the same time. All physical property outputs are inversions to be developed and are not directly replaced by displacements.
Route-level gaps:Snell/ray tracing and parameter identifiability analysis need to be added; deflection cannot uniquely prove composition or concentration
"New cores required" only describes the relative development volume and does not constitute a commitment to accuracy, tempo, stability or delivery time.
Verification methods and acceptance prerequisites
Examine geometry/composition cross-sensitivity using a known prism or refractive index reference medium and controlled temperature. Reference materials, blank samples and independent physical property instrument comparison
| 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.
NIST blue light triangulation study near flame
Displacement measurements and thermal gradient effects in specific fire tests, without extrapolation of values
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
Refractive deflection calibration under temperature controlled conditions
Please describe the task object, original picture or video, target indicators, device platform, interface and sample situation.
Phone: 13910119357xuzhiyang0928@gmail.com