Related Experiment Video
Updated: Feb 10, 2026
06:51
Measuring the Complete-arch Distortion of an Optical Dental Impression
Published on: May 30, 2019
8.0K
Correction of phase-delay distortion for α-β circular scanning
Applied Optics
|May 24, 2018
Summary
This study introduces new models to correct scanning distortions in laser systems caused by galvanometer inertia. These models improve image quality and positioning accuracy in laser scanning and processing applications.
Area of Science:
- Optics and Photonics
- Mechanical Engineering
- Control Systems
Background:
- α-β circular scanning offers large fields of view and high reliability for laser applications.
- Mechanical inertia in galvanometers causes phase delays, leading to distortions in scanning paths.
Purpose of the Study:
- To develop and validate correction models for phase-delay distortions in α-β circular scanning.
- To enhance image quality and positioning accuracy in laser scanning systems.
Main Methods:
- Proposed two correction models for constant angular velocity scanning (CAVS) and constant line velocity scanning (CLVS).
- Utilized phase-frequency relationships derived from the galvanometer's transfer function for model development.
- Conducted experimental validation of the proposed correction models.
Main Results:
- The models effectively corrected rotation distortion in CAVS.
- The models successfully corrected tortuosity distortion in CLVS.
- Phase-delay distortion correction significantly improved image quality and positioning accuracy.
Conclusions:
- The developed models provide an effective solution for galvanometer-induced scanning distortions.
- Accurate phase-delay compensation is crucial for high-performance laser scanning imaging and processing.
- This work advances the reliability and precision of laser scanning technologies.
More Related Videos
Related Concept Videos
01:15Distance Corrections
299
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
299
01:20Power Factor Correction
548
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
548
02:28Leaky Scanning
5.7K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.7K
01:10Deformation in a Circular Shaft
932
One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
932
01:02¹H NMR: Interpreting Distorted and Overlapping Signals
1.5K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.5K
02:39Phase Diagrams
50.4K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
50.4K