Optical Filters News

  1. The Right Filter Is Key To Lower-Cost And Faster Time-To-Market MWIR Equipment
    10/4/2018

    Midwave (MWIR) infrared 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.

  2. How To Specify A Filter
    4/2/2018

    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. 

  3. 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.

  4. 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.

  5. 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.

  6. 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. 

  7. 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.

  8. Understanding Edge Filters For Raman Spectroscopy
    5/8/2017

    Since the excitation source laser intensity is often six to eight orders of magnitude greater than the Raman scattered signal, edge pass filters are required to block the wavelength of the scattered laser beam while transmitting the wavelength shifted Raman scattered signal.

  9. 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.

  10. 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.