Asahi has developed photonics tools for over 50 years, and now provides state-of-the-art optical filters and instruments to overseas customers.
We are passionate about contributing to the development of optical industries and progress of sciences with our cutting-edge technology. Stop by our website, find the best solutions, and let's discuss what you require for your science and business with Asahi!

Holiday Information

We will be closed for winter holidays from December 28, 2024 to January 5, 2025.
We will not be able to respond to your inquiry and order during this period.
We appreciate your kindly understanding.

Optical Filters

Asahi Spectra offers various types of optical filters as standard. Our optical filters are manufactured by hard coating, such as ion assisted deposition (IAD) and magnetron sputtering (MS). These coating methods achieve hard coating, excellent durability for environment (humidity, low or high temperature, thermal shock or vacuum) and stability of spectral performance.

Optical Instruments

Asahi Spectra offers various types of light sources such as xenon light sources, solar simulators, a halogen light source, and a LED light source. We offer not only light sources but also a monochromator and a transmittance meter. Depending on your application, we will provide the best solution.

Applications

UV Filters

Astronomical Filters

Spectra Viewer

Photochemistry

Solar Simulator

Monochromatic Light

NEWS

New version of the 300W xenon light source , MAX-351

November 28, 2024

Very bright, heatless, wavelength-selectable xenon light source

TLV-305-BP Transmittance Meter

October 04, 2024

Quick check of transmittance with
specific wavelength by a bandpass filter

NEW UV 254-390nm BANDPASS FILTERS

August 06, 2024

The new UV 254-390nm bandpass filters are now on sale.

SPIE ASTRONOMICAL TELESCOPES + INSTRUMENTATION 2024 / BOOTH NO.323

March 28, 2024

June 18 - 20, 2024
Pacifico Yokohama
Yokohama, Japan