Optical Filters News
-
What Is A Neutral Density Filter?
11/21/2019
A neutral density, or ND, optical filter reduces or modifies the intensity of all wavelengths or colors of light equally, therefore providing for no changes in the hue of the color rendition. Neutral density filters can be colorless or clear, or they can be grey in tone.
-
How To Measure Thin, Parallel Optics
10/1/2019
Thin, parallel optics are difficult to measure, because both front and back surfaces reflect light. Fourier- Transform Phase Shifting Interferometry can separate those reflections and provide more information than traditional methods.
-
Remote Sensing With Lidar Requires Optical Filter Trade-Offs
4/12/2019
Engineers and designers working on lidar applications should consider critical filter issues early on.
-
LiDAR And Optical Filters – Helping Autonomous Vehicles See More Clearly
10/31/2018
The evolution of sensing and imaging systems, combined with the desire to create safer, more efficient transportation systems, is driving the development of autonomous vehicles. LiDAR is a key technology that will eventually help carry this growth through to “Level 5” autonomy.
-
Opto Diode Introduces 13.5 nm Directly-Deposited Thin-Film Filter Photodetectors
12/13/2017
Opto Diode Corporation, an ITW company, introduces the SXUV100TF135 and SXUV100TF135B photodiodes with integrated thin-film filters. The detectors each feature a 100 mm2 active area and a directly-deposited thin-film filter for detection between 12 nm and 18 nm. Both detectors have typical responsivity of 0.09 A/W at 13.5 nm and are optimized for different electrical performance. The photodiodes are ideal for use in applications such as laser power monitoring, semiconductor photolithography, and metrology systems that utilize extreme ultraviolet light.
-
Frequently Asked Questions: Optical Thin Film Filters
12/11/2017
This article answers an array of frequently asked questions about optical thin film filters. It provides in-depth information on what they are, how they are created, how they perform, and what to look for when selecting an optical thin film filter supplier.
-
Modified Double-Slit Experiment Achieves Widest Degree Of Optical Spatial Coherence
10/19/2017
Researchers at Brown University have demonstrated a new method of modulating the coherence of light by using surface plasmon polaritons in metal films. This technique represents an alternative way to engineer flat optical elements that could be applied in optical communication, beam shaping, and microscopic imaging.
-
TU Wien Researchers Develop Cloaking Technology
9/14/2017
Researchers at TU Wien (Vienna) have developed a type of cloaking technology that renders opaque materials invisible by letting the flow of light pass through the medium unperturbed.
-
Researchers Create Beamsplitter For Polarizing Light At Terahertz Frequencies
7/20/2017
Researchers at Brown University and Osaka University have developed a technique to polarize light for terahertz waves using a new type of beamsplitter made from stacks of spaced metal plates.
-
New Virtual Reality Display Uses Optical Mapping To Ease Eye Fatigue
6/22/2017
A new type of 3D display being developed by researchers at the University of Illinois at Urbana-Champaign could pave the way for augmented reality (AR) and virtual reality (VR) headsets that do not cause headaches, nausea and eye fatigue symptoms commonly reported by users.