WAVEFRONT DISTORTION

Researchers from the University of Twente have developed a multifunctional photonic integrated circuit (PIC) that enables programmable filtering functions with a reported record-high dynamic range....

Optical coherence tomography (OCT), a noninvasive imaging technology, is a standard diagnostic tool used in the field of ophthalmology. With the advent of new compact form factors for the modality,...

The ImageMaster® HR 2 is the newly developed MTF test station by TRIOPTICS which takes the ImageMaster® R&D product line to the next level. The improvements achieved result in an extended...

The benefits of aspheric lenses are numerous: They allow for a reduction in spherical aberrations and are ideal for focusing or collimating light, as they can achieve a low ƒ-number. Aspheres...

In their earliest forms, UV bandpass filters that were optimized for wavelengths less than 400 nm, such as the Schott UG or the Hoya U-series, were constructed of absorbing compounds in glass. Such...

An interferometer is an instrument that compares the position or surface structure of two objects. The basic two-beam division of amplitude interferometer components consists of a light source, a...

With the understanding of aspheric lens manufacturing provided in part one of this article, designers have the tools to optimize their aspheres; the next step is to understand how to specify and...

The sensor is a central component of any machine vision system. The type of sensor and features it provides will affect overall image quality; so it is important to know how to specify the features...

Your goal is simple: Acquire a clear, high-resolution, glare-free image — all while keeping costs down and ensuring that the process is repeatable. Does that sound difficult? Or even...

Demand for high sensitivity and high dynamic range motivates new approaches for image sensors. The quanta image sensor (QIS) concept involves counting individual photons on sensors made of 1...

Machine vision applications have expanded rapidly beyond the controlled environments of the factory, and with this expansion, the need for ruggedized lens designs has grown, with the requirements...

An optical testing instrument is a device or system used to evaluate and measure the performance, quality, and characteristics of optical components, systems, and devices. These instruments play a...

A measure of image quality produced by an optical system. May be specified in terms of cycles per millimeter, referencing a repeating bar pattern; or angular resolution, referencing the angle...

A measure of the closeness with which an optical image is capable of resembling the original object. The factors that affect image quality are lens aberrations, diffraction, dirt and stray light...

Pixel pitch refers to the distance between the centers of two adjacent pixels on a display screen or imaging sensor. It is typically measured in millimeters and is a crucial specification in...

A fabry-perot interferometer is a multiple-beam interferometer, usually consisting of two flat plates, with high reflective ability. The plates are set parallel to one another by spacers so that...

The Optical Engineering Experts® Optikos designs and manufactures metrology products for measuring and assuring optical image quality; and provides optical engineering design, development,...

NYFORS is your innovative supplier of advanced glass processing and preparation equipment for specialty optical fiber splicing operations. We supply reliable and precise solutions tailored to the...

SORL/Space Optics Research Labs produces high quality aspheric optical systems and instrumentation for a wide range of research and test applications. We also produce a wide range of reflective...