Whole-viewing-angle cat's-eye retroreflector as a target of laser trackers

Takatsuji, Toshiyuki; Goto, Mitsuo; Osawa, Sonko; Yin, Ruimin; Kurosawa, Tomizo

doi:10.1088/0957-0233/10/7/403

Cited by 74 publications

(37 citation statements)

References 2 publications

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“…This distinctive difference in retroreflection between the RJPs and silica particles could be expressed by the Fresnel equation (eq 1). 17,18 Under normal light incidence (incident angle = 0°) from medium A into the interfacial material B, the % reflectivity of the interfacial layer (R) can be calculated as follows:…”

Section: Acs Applied Materials and Interfacesmentioning

confidence: 99%

Retroreflective Janus Microparticle as a Nonspectroscopic Optical Immunosensing Probe

Han

Kim

Park

et al. 2016

ACS Appl. Mater. Interfaces

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We developed retroreflective Janus microparticles (RJPs) as a novel optical immunosensing probe for use in a nonspectroscopic retroreflection-based immunoassay. By coating the metals on the hemispherical surface of silica particles, highly reflective RJPs were fabricated. On the basis of the retroreflection principle, the RJPs responded to polychromatic white light sources, in contrast to conventional optical probes, which require specific monochromatic light. The retroreflection signals from RJPs were distinctively recognized as shining dots, which can be intuitively counted using a digital camera setup. Using the developed retroreflective immunosensing system, cardiac troponin I, a specific biomarker of acute myocardial infarction, was detected with high sensitivity. On the basis of the demonstrated features of the retroreflective immunosensing platform, we expect that our approach may be applied for various point-of-care-testing applications.

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Section: Acs Applied Materials and Interfacesmentioning

confidence: 99%

Retroreflective Janus Microparticle as a Nonspectroscopic Optical Immunosensing Probe

Han

Kim

Park

et al. 2016

ACS Appl. Mater. Interfaces

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“…In this study, we use a cat's eye retroreflector as the target. The cat's eye retroreflector is a spherical glass of the pre-calibrated geometric accuracy with its hemispheric surface coated by the total-reflection metal-film deposition [18], so that the incoming light is reflected to the same direction. Its major specifications are shown in Table 2.…”

Section: Prototype Tracking Interferometermentioning

confidence: 99%

Estimation of three-dimensional volumetric errors of machining centers by a tracking interferometer

Ibaraki

Kudo

Yano

et al. 2015

Precision Engineering

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a b s t r a c tA tracking interferometer is a laser interferometer with the mechanism to steer the laser direction to automatically follow a target retroreflector. This paper experimentally investigates the performance of the tracking interferometer prototype, developed by a part of the authors, in estimating the volumetric accuracy of a machining center based on the multilateration principle. Then, the prototype's technical issues are discussed based on the measurement uncertainty analysis. This paper briefly reviews the direct algorithm to calculate the three-dimensional position of the target, as well as the indirect algorithm to estimate geometric error parameters of the machine's kinematic model. Their comparison is also presented based on the uncertainty analysis.

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“…The tracking interferometer (the term in [2]), or the laser tracker, is a laser interferometer with a steering mechanism to change the laser beam direction to track a target retroreflector (typically a cat's eye [93]). Threedimensional position measurement of the TCP can be done by conventional commercial laser trackers, from, e.g., Leica Geosystems, Faro, and Automated Precision Inc. (API), by measuring the distance (displacement) to the target and the direction of the laser beam [94,95].…”

Section: Tracking Interferometermentioning

confidence: 99%

Indirect Measurement of Volumetric Accuracy for Three-Axis and Five-Axis Machine Tools: A Review

Ibaraki¹,

Knapp²

2012

Int. J. Automation Technol.

225

100

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The volumetric accuracy of machine tools is represented by a map of position and orientation error vectors of the tool over the volume concerned. Numerical compensation for volumetric error is possible in many latest commercial CNCs for machine tools. This paper reviews indirect measurement schemes for machine tool kinematics, in which the tool center position is measured as the superposition of error motions of linear or rotary axes. Each error motion can be separately identified by best-fitting a set of measured tool center positions to the kinematic model of machine tools. Indirect measurement schemes for the kinematics of three orthogonal linear axes, as well as the fiveaxis kinematics with two rotary axes, will be reviewed.

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Whole-viewing-angle cat's-eye retroreflector as a target of laser trackers

Cited by 74 publications

References 2 publications

Retroreflective Janus Microparticle as a Nonspectroscopic Optical Immunosensing Probe

Retroreflective Janus Microparticle as a Nonspectroscopic Optical Immunosensing Probe

Estimation of three-dimensional volumetric errors of machining centers by a tracking interferometer

Indirect Measurement of Volumetric Accuracy for Three-Axis and Five-Axis Machine Tools: A Review

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