Laser beam scanning by rotary mirrors II Conic-section scan patterns

Li, Yajun

doi:10.1364/ao.34.006417

Cited by 31 publications

(10 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main limitation for the direct quantitative analysis of surfaces is so-called fan distortion. Fan distortion is a set of aberrations associated with the scanning system architecture of the optical setup that typically consists of two-mirror and two-axis scanning systems [13][14][15][16]. Such scanning systems are used in most OCT devices.…”

Section: Introductionmentioning

confidence: 99%

Optical coherence tomography for quantitative surface topography

et al. 2009

View full text Add to dashboard Cite

We address the measurement and correction of fan distortion in optical coherence tomography (OCT). This effect arises from the scanning system configuration and prevents one, in general, from obtaining quantitative topographic data from OCT. Computer simulations allowed us to quantify the effect and evaluate its dependence on the scanning mirror separation and design of the collimating lens, as well as to estimate the optimal axial position of that lens to minimize the fan distortion. We also developed a numerical algorithm based on 3-D ray propagation for the correction of the residual fan distortion. The effect was studied experimentally using a custom developed time-domain OCT in a Michelson configuration provided with a confocal channel, and the accuracy of the fan distortion correction algorithm tested on samples of known dimensions (flat surfaces and spherical lenses). With a proper calibration of the system with use of an onfocal channel, this algorithm makes it possible for time-domain OCT devices to be used as topographers.

show abstract

Section: Introductionmentioning

confidence: 99%

Optical coherence tomography for quantitative surface topography

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Two-dimensional free-ofdistortion scanners were presented by Sabban et al [13]. Image shape analysis as an intersection with the detection plane was presented as well [14][15][16][17]. Stability of optical systems was analyzed by Friedman and Schweitzer [18].…”

Section: Introductionmentioning

confidence: 99%

3D optical two-mirror scanner with focus-tunable lens

Pokorný

Mikš

2015

Appl. Opt.

View full text Add to dashboard Cite

The paper presents formulas for a ray tracing in the optical system of two-mirror optical scanner with a focus-tunable lens. Furthermore, equations for the calculation of focal length which ensure focusing of a beam in the desired point in a detection plane are derived. The uncertainty description of such focal length follows as well. The chosen vector approach is general; therefore, the application of formulas in various configurations of the optical systems is possible. In the example situation, the authors derived formulas for mirrors' rotations and the focal length depending on the position of the point in the detection plane.

show abstract

“…Fundamental analysis of systems of plane mirrors by matrix multiplication is carried out in [12]. Other works are focused on design of distortion-free two-mirror scanners [13], analysis of various types of scanning patterns in the observation plane [14][15][16][17], stability of plane-mirror systems for as many as three mirrors [18], or 1D surface profile measurement by detection of the angles of deflection [19].…”

Section: Introductionmentioning

confidence: 99%