Utilizing the camera of a smartphone and simple laboratory optical components, we demonstrate an optical technique that measures an optical phase difference (OPD) of π/256 in an interference process. ...

Since a measurement of the bidirectional scatter distribution function (BSDF) of a material is proportional to the intensity of the scattered light, a BSDF measurement system with the addition of a du...

A method is presented for accurate measurement of spectral flux-reflectance (albedo) in a laboratory, for media with long optical path lengths, such as snow and ice. The approach uses an acrylic hemis...

When evaluated with a spatially uniform irradiance, an imaging sensor exhibits both spatial and temporal variations, which can be described as a three-dimensional (3D) random process conside...

One of the most important performance indicators of a fiber optic distributed temperature sensing (DTS) system is its operational stability, which depends on the performance of each device making up t...

We present a high-performance reconfigurable coincidence counting unit (CCU) using a low-end field programmable gate array (FPGA) and peripheral circuits. Because of the flexibility guaranteed by the ...

We calibrated and determined the measurement uncertainty of a custom-made Fourier domain short coherence interferometer operated in laboratory conditions. We compared the optical thickness of two thic...

We provided a method to correct the yaw error of a 500 mm grating blank carriage in real time, as the yaw error will bring down the quality of wavefront. We designed a structure with double piezoelect...

This paper describes an alternative automated setup for phase-shifting and phase retrieval based on the wavelength tunability of a laser diode. For many industrial and scientific applications it is de...

This paper describes a miniature assembly for optical fiber tips that ensures both ultralow backreflection and an on-axis light beam exiting the assembly, resulting in a rigid, high-performance, and c...

We reveal that a practical and simple sample arrangement for optical microscopy that is commonly used in biomedical imaging laboratories is a microscope condens...

We present a method to provide absolute intensity calibration of a common low-resolution, wideband optical spectrometer. Terrestrial solar radiation is employed as the source of illumination, and the ...

In this paper, the design and alignment strategies of 4 f systems used in the vectorial optical field generator are described in detail. Reflection-type ...

In this paper we will review some of the many different practical arrangements that have been obtained to measure the transversal aberrations of optical systems based on the odd and vulnerable Hartman...

This work explores the use of linear principal component analysis (PCA) during an optical design’s tolerancing analysis. Chapman et al. [Proc. SPIE ...

The autostigmatic microscope (ASM) is ubiquitous in the applied optics community and so familiar to those who regularly use it that it is barely mentioned in the ...

In this paper an alternative low-cost, easy-to-use, and fully automated profilometry setup is proposed. The setup is based on a phase-shifting fringe projection...

Based on measurement of the intensity autocorrelation function, a new method to determine the modulation depth of scattered laser light modulated by an ultrasonic wave in turbid media was applied to u...

The basic principle of a rotating chisel-shaped phonon coupling and detection probe, believed to be novel, is presented for the measurement of coherent phonon propagation and interaction characteristi...

We report on what we believe to be a novel classification method for polishing processes that we apply in our laboratory on a regular basis. Two parameters are deduced from the in situ iTIRM (intensit...