Optical Filters News
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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.
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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.
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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.
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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.
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PIXELTEQ Micro-Patterned Optical Filters For Multispectral Imaging
2/2/2016
PIXELTEQ micro-patterned optical coatings combine patented microlithography expertise with state-of-the-art coating technology. These micro-patterned filters help create compact and cost-effective optical devices for use in biomedical, security and defense, aerospace, precision agriculture and machine vision applications.
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Optical Filters: Right In Front Of Your Eyes
6/29/2015
Continued improvements in multilayer thin film filter (TFF) design and manufacturing methods — such as in-situ optical monitoring and automated coater control with dynamic design adjustment — have enabled successful production of optical filters with increasing control over the spectral shape.
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Finding The Needle In The Haystack: Raman Analysis And The Role Of Optical Filters
1/9/2015
Most Raman microscopy applications seek to maximize access to the Raman fingerprint of the molecule of interest, requiring filters that provide “more signal with less background.” This article discusses optical filters for Raman analysis, addressing filters for both bench-top and portable Raman applications.
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DELTA Establishes North American Office To Support Their Expanding Customer Base For Linear Variable Filters And Other Advanced Optical Filters And Components Used In Biomedical Instrumentation
10/26/2012
DELTA Light & Optics, http://www.filters.madebydelta.com, has opened an office in North America to support their expanding customer base for linear variable filters and advanced optical filters and components.
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How To Specify A Filter
In general, typical filter optical specifications will include the wavelength ranges over which to reflect and transmit light, clear aperture of the filter, the polarization state of light for non-normal angles of incidence, light coherency (laser or white light), optical beam size and cone angle of light, and more.
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Lower-Cost And Faster Time-To-Market MWIR Equipment – The Right Optical Filter Is Key
Midwave infrared (MWIR) light is important in many hardware applications, and optical filters are critical to success. Some simple practices can help avoid over-specifying filter characteristics and driving up costs.