Ray-Code: An Aberration Coefficient Oriented Lens Design And Optimization Program.

Rayces, Juan L.; Lebich, Lan

doi:10.1117/12.940229

Cited by 6 publications

(2 citation statements)

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“…We have modeled the induced divergence of the beam when a collimating lens is used with a commercialoptical design program. 12 In Fig. 5 we plot the induced divergence as a function of Y for a few values of the gap between the lenses, assuming a radius of curvature of Rϭ30 mm, n l ϭ1.694.…”

Section: ͑4͒mentioning

confidence: 99%

Design of an optical probe based on angle scanning reflectometry near the critical angle

2003

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Techniques based on angle scanning reflectometry near the critical angle can provide high-resolution optical measurements and testing of transparent, absorbing, and turbid liquid samples. Until recently, such techniques were practical for laboratory instruments only. In this work we propose and analyze the design of a relatively simple, compact, and robust optical probe based on angle scanning reflectometry near the critical angle. The optical probe can be used as a high-resolution refractometer, permitting the measurement of the real and imaginary parts of the refractive index, or as an optical sensor to monitor physical and chemical processes in real time within complex liquids. The design offers easy handling, portability, and an adequate balance between size and stability. We study the optical characteristics of the instrument and present the results of an experimental prototype of the device.

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Section: ͑4͒mentioning

confidence: 99%

Design of an optical probe based on angle scanning reflectometry near the critical angle

2003

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“…Recall that the optical sensitivity to variations in the RI is a function ofthe angular divergence of the incident beam. We have calculated, using a ray-tracing software [13], the divergence-angle between two rays which enter L1 parallel to each other and 0.63mm apart. We considered the case of our experimental setup in Fig.…”

Section: Design Ofa Compact Probe and Miniaturization Limitsmentioning

confidence: 99%

<title>Optical device for sensing the index of refraction of liquids with high turbidity</title>

et al. 2000

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We discuss the use of photo-reflectance near the critical angle (PRCA) to monitor small changes of the RI of highly turbid liquids. The theory of the reflectance of a laser beam near the critical angle for an external medium with a complex RI is summarized. The applicability of PRCA to sense highly turbid media is demonstrated experimentally on bovine milk samples. We give experimental results showing the temporal variation of the refractive index (RI) during three different processes in bovine milk: 1) Mechanical stirring, 2) temperature changes, and 3) pH variations around the isoelectric point of the casein micelles (micelle aggregation). RI changes in the order of a few times 1 x iO are observed during the experiments. The experimental results show that the RI of milk can be used to track physico-chemical changes in time allowing one to measure the time constant of the different process. The design of a compact RI probe for insitu applications is discussed. The miniaturization of such a probe will probably limited by factors other than the loss of sensitivity. A novel angle-of-incidence control which requires only linear displacements of some of the optical components (no rotation) is proposed and shown to be feasible. Such an optical probe may be used in the dairy industry and in general in the food industry or food science research laboratories. It could give additional analytical power to the food scientist, engineer, or technician.

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Optical design procedure for duplicating wavefront errors of an optical instrument

Rayces

Rosete-Aguilar

2000

Opt. Eng

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Ray-Code: An Aberration Coefficient Oriented Lens Design And Optimization Program.

Cited by 6 publications

References 0 publications

Design of an optical probe based on angle scanning reflectometry near the critical angle

Design of an optical probe based on angle scanning reflectometry near the critical angle

<title>Optical device for sensing the index of refraction of liquids with high turbidity</title>

Optical design procedure for duplicating wavefront errors of an optical instrument

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