+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Profile measuring method based on reflection characteristics at a critical angle in a right-angle prism

Profile measuring method based on reflection characteristics at a critical angle in a right-angle prism

Applied Optics 30(22): 3205-3209

A new method is proposed for profile measurements using a right-angle prism. With this method, the distance to an object surface is measured by using triangulation based on a change of the critical angle of total reflection. An object surface is illuminated by a scanning laser beam and the incident angle of the scattered light into the prism is measured using the change in the critical angle. Three-dimensional profiles of objects with rough surfaces can be measured with high accuracy.

(PDF same-day service: $19.90)

Accession: 055205095

Download citation: RISBibTeXText

PMID: 20706376

DOI: 10.1364/AO.30.003205

Related references

Angle measurement based on the internal-reflection effect using elongated critical-angle prisms. Applied Optics 35(13): 2239-2241, 1996

Angle measurement based on the internal-reflection effect and the use of right-angle prisms. Applied Optics 34(22): 4976-4981, 1995

A Method for the Determination of the Critical Angle of Reflection of Sound from the Bottom of the Ocean. Journal of the Acoustical Society of America 27(5): 1006-1007, 1955

A photographic method of measuring the obliquity, nekc angle and angle of torsion of the human femur. Singapore Medical Journal 13(5): 235-238, 1972

A method of measuring the profile angle at the nasion in skulls. S African Jour Med Sci 14(1/2): 7-12, 1949

The neck-malleolar angle: an alternative method for measuring total lower limb torsion that considers the knee joint rotation angle. Skeletal Radiology 40(5): 617-621, 2011

Prism-hologram-prism sandwiched recording method for polarization-selective substrate-mode volume holograms with a large diffraction angle. Optics Express 26(16): 20534-20543, 2018

Reduplication of a penta prism angle using master angle prisms and a plano-interferometer. Applied Optics 10(6): 1371-1375, 1971

Angle measurement based on the internal-reflection effect: a new method. Applied Optics 31(28): 6047-6055, 1992

Infrared Brewster-angle polarizing beam splitter using a high-index prism with a small wedge angle. Applied Optics 56(11): 3020-3021, 2017

Luminance enhancement without sacrificing the viewing angle in a direct-lit backlight by addressing the angle-dependent characteristic of the prism film. Displays 50: 49-56, 2017

Magnetic prism alignment system for measuring large-angle strabismus. Journal of Aapos 18(1): 101-102, 2014

Technical Note: The effect of 2D excitation profile on T1 measurement accuracy using the variable flip angle method with an average flip angle assumption. Medical Physics 44(11): 5930-5937, 2017

Total internal reflection without change of polarization using a right-angle prism with half-wavelength-thick optical interference coating. Optics Letters 34(3): 371-373, 2009

A novel computer-based method for measuring the acetabular angle on hip radiographs. Acta Orthopaedica et Traumatologica Turcica 51(2): 155-159, 2017