Optical Filters News

  1. LiDAR And Optical Filters – Helping Autonomous Vehicles See More Clearly
    10/31/2018

    “What’s a ‘steering wheel’?”  At the present time this would be a very strange question to hear asked from anyone who has driven, ridden in, or even seen a car but in a couple of decades this may not seem so unusual.  The evolution of increasingly affordable and capable sensing and imaging systems combined with the desire to create safer, more efficient transportation systems is driving the development of autonomous vehicles (pun intended).  LiDAR is a key technology that will eventually help carry this growth through to “Level 5” autonomy --> no steering wheels, no brake pedals, no human intervention in driving.

  2. 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.

  3. 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. 

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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. 

  9. 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.

  10. 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.