Asahi Spectra Co., Ltd.

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About Asahi Spectra Co., Ltd.

Asahi Spectra Co., Ltd. was founded in 1970 in Tokyo and has developed photonics tools for over 45 years, and now provides state-of-the-art optical filters by a vacuum deposition technology such as ion assisted deposition (IAD) and magnetron sputtering (MS).

Nowadays, customer requirements are becoming more complicated as optical innovation advances, and most requirements can not be satisfied by just optical filter technology. So we have been trying to expand our field to “optical instruments” based on our 45 years accumulated optical know-how as you can see how professional our optical instruments are.

Stop by our website to find the best solutions, and let’s discuss what you require for your science.

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About Asahi Spectra Co., Ltd.

Shortpass Filters
Longpass Filters
Bandpass Filters
Neutral Density Filters
Super Cold Filters
UV Filters
Astronomical Filters

Optical Instruments




The MAX-350 is the xenon light source 300W with filters.

This unit can emit intended monochromatic wavelengths by the combination of optical components.

In addition, the output light has less IR heat thanks to the embedded filter module.

This source is useful especially for photochemistry and photoreaction.




The HAL-320 is the solar simulator with xenon 300W lamp.

It achieves high approximation of solar spectrum with AM 1.5G and our unique fiber illumination system enables the illumination for any directions


LED light source

The CL-1501 is the high power LED light source. It is possible to use several wavelength from UV to IR by changing LED heads. Daisy chain is available. (Up to 8 units)




The CMS-100 is the single grating monochromator of the Czerny Turner design. It achieves to control the wavelength by 0.1nm interval and the slit width can be controlled automatically by remote controller.

Detail page


[TLV-304 -LC]

The TLV-304-LC is the transmittance meter with luminous filter.

It achieves to check the quick measurement of transmittance close to the sensitivity of human eyes.

Detail page


The TLV-304-BP is the transmittance meter with bandpass filters.

It achieves to measure a sample by the specified wavelength.




Light Source Accessories
Detail page

Light Guide Rod Unit

The rod unit achieves to irradiate the wavelength in  liquid by attaching the light guide.

It achieves to insert the head into the slender container such as a NMR tube and the taper shape is available for a micro tube.

Detail page

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About Asahi Spectra Co., Ltd.

Sales agency in Asia

South Korea

KOS, Inc.
O213, Green-zone, ITECO, #150,
Gyeonggi-do, 12930 Korea
TEL: 82-2-486-7930
FAX: 82-2-486-7931

SP Technology Co., Ltd.
10, Gwiin-ro, Dongan-gu, Anyang-si,
Gyeonggi-do, 14042 Korea
TEL: 82-31-477-8852
FAX: 82-31-477-8055

Veego Corporation

No.192, Wenxin S. 10th Rd., South Dist.,
Taichung City 402 Taiwan
TEL: 886-4-22603233
FAX: 886-4-22608167

Ben-Moshe Manufactures Representative

64 Arlozorou St., Ramat-Gan,
Tel-Aviv 61181, Israel
TEL: 972-3-6700007
FAX: 972-3-6727319


Sales agency in Europe

Mountain Photonics GmbH

Albert-Einstein-Str. 18
D-86899 Landsberg am Lech Germany
TEL: 49-8191-985199-0
FAX: 49-8191-985199-99

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