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Koshin Kogaku Co. Ltd.Koshin Kogaku Co. Ltd.
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    • Select by Product Name
      • Band Pass Filter
      • Long Pass Filter
      • Short Pass Filter
      • Multiple Band Pass Filter
      • Notch Filter/Band Stop Filter
      • Low angle-dependent bandpass filter
      • Polarizing Beam Splitter (PBS)
      • Non-Polarizing Beam Splitters(N-PBS)
      • Polymer Filter
      • Etalon Filter
      • AR Coating
    • Select from the Products for Imaging Devices
      • Broadband Filter, SWIR filter
      • Infrared (IR) Cut Filter
      • ND Filter (Neutral Density Filter)
      • Film ND Filter
      • Ulrtaviolet Filter(UV Filter)
      • UV/IR Cut Filter
      • Cold Mirror
      • RGB Filter
    • Select from the Products for Industrial Machines
      • High Power Laser Mirror
      • Infrared Pass FIlter
      • Dichroic Filter
      • Dichroic Mirror
      • Laser Mirror
    • Select from the Products for Medical Equipment
      • Exitation Filter, Emission Filter, Dichroic Filter/Mirror for Fluorescence Analysis
      • Dichroic Filter for Fluorescence Analysis
      • Interference Filter (Band Pass Filter)
  • Devices
    • Semiconductor laser light sources
      • Wavelength Tunable Lasers KLS-601A Series (Tunable Laser:High Resolution Model)
      • Wavelength Tunable Laser KLS-201A Series(Tunable Laser:Standard Model)
      • Fixed Wavelength Semiconductor Lasers FLM
      • Fixed Wavelength Semiconductor Lasers FLS
    • Fiber-optic Module
      • CILF/CFBPF (1um-band Compact Module)
      • TFM/FC:Wavelength Tunable Filter with Exchangeable Filter (Cassette Type)
      • WTFM/FC:Wavelength Tunable Filter with Double Exchangeable Filter (Cassette Type)
      • FC: Filter Cassette for TFM/ WTFM
      • ILF:Fixed Wavelength Optical Module with 8mm square in cross section
      • FBPF:Wavelength Tunable Optical Module with 8mm square in cross section
      • TMUX:3-port Transmission/Reflection Module
      • ITF-201A Series Wavelength/FWHM Tunable Filter
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Semiconductor Laser Light Sources
(Tunable & Fixed-wavelength Lazer)

Koshin Kogaku Co., Ltd. provides wavelength tunable lasers that achieved both high wavlength purity and putput power stability at the same time, adopting our original narrow band pass filter. Its wavelength range spread over the 1-um band and other 5 wavelength ranges used for the optical communications.

Customers can choose the desired model according to the requirements. Customization of specifications is available.

Details

Tunable Optical Filter Modules

Exchanging filter cassette, this product can change its transmitting wavlength and full width half maximum (FWHM). In case of the product with two slots for the filter cassettes, it can tune not only the center wavelength but also the pass band width.

Fiber-optic device type products are also in the options, which suit embedding in various optical equipment.

Details

Optical Mirror For Lazer Light
Anti Reflect coating

We offer high reflectivity mirrors and high transmission AR coatings over a wide range of wavelengths from visible to near-infrared.

High surface accuracy type and high laser proof type are available.

Details
Customized Filter for SWIR
03/16/2023

SWIR filter (Broadband filter) Short wavelength infrared (SWIR) light is generally defined as light in the 900-1700 nm wavelength range. SWIR [...]

Update the website
03/10/2023

We’ve updated a page of Long Pass Filter.    We have developed Long pass filter with wide and flat blocking lange. [...]

Customized Filters for Spectral Analysis II
09/08/2022

Steep-Edge Long Pass Filters Steep-edge Long Pass Filters provide very steep cut-on slope, deep rejection and high transmission at the same [...]

Customized Filters for Spectral Analysis I
09/08/2022

Notch filters Notch filters, or band stop filters, reflect and remove the specific narrow wavelength band only and pass the other [...]

Customized Filters for LiDAR
09/08/2022

Low incident angle dependence band pass fitlers The transmission spectrum of band pass filters composed of multi-layered dielectric thin films subject [...]

Customized Filters
09/08/2022

We are constantly striving to improve our optical thin-film coating technologies and the adaptability to a variety of requests for custom [...]

Thin Film Filters for Module Applicaion
09/08/2022

Narrow Band Pass Filter      Abundant experiences of customized optical filters for the optical communication and fiber-optic sensing have expanded the [...]

World’s first successful transmission of 4K videos on T-Band
09/08/2022

World’s first successful transmission of Ultra-High-Definition (4K) Videos through a newly defined wavelength band named “T-Band”. Press release [...]

Contact US

Please feel free to contact us.

TEL 81+463-75-5196
Copyright 2023 © Koshin Kogaku Co., Ltd. Our company is a group enterprise in Yamaichi Electronics Co., Ltd. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
  • About
    • Corporate Profile
    • News
    • History
    • Catalog
    • ISO 9001,14001
  • Technology
  • Filters
    • Select by Product Name
      • Band Pass Filter
      • Long Pass Filter
      • Short Pass Filter
      • Multiple Band Pass Filter
      • Notch Filter/Band Stop Filter
      • Low angle-dependent bandpass filter
      • Polarizing Beam Splitter (PBS)
      • Non-Polarizing Beam Splitters(N-PBS)
      • Polymer Filter
      • Etalon Filter
      • AR Coating
    • Select from the Products for Imaging Devices
      • Broadband Filter, SWIR filter
      • Infrared (IR) Cut Filter
      • ND Filter (Neutral Density Filter)
      • Film ND Filter
      • Ulrtaviolet Filter(UV Filter)
      • UV/IR Cut Filter
      • Cold Mirror
      • RGB Filter
    • Select from the Products for Industrial Machines
      • High Power Laser Mirror
      • Infrared Pass FIlter
      • Dichroic Filter
      • Dichroic Mirror
      • Laser Mirror
    • Select from the Products for Medical Equipment
      • Exitation Filter, Emission Filter, Dichroic Filter/Mirror for Fluorescence Analysis
      • Dichroic Filter for Fluorescence Analysis
      • Interference Filter (Band Pass Filter)
  • Devices
    • Semiconductor laser light sources
      • Wavelength Tunable Lasers KLS-601A Series (Tunable Laser:High Resolution Model)
      • Wavelength Tunable Laser KLS-201A Series(Tunable Laser:Standard Model)
      • Fixed Wavelength Semiconductor Lasers FLM
      • Fixed Wavelength Semiconductor Lasers FLS
    • Fiber-optic Module
      • CILF/CFBPF (1um-band Compact Module)
      • TFM/FC:Wavelength Tunable Filter with Exchangeable Filter (Cassette Type)
      • WTFM/FC:Wavelength Tunable Filter with Double Exchangeable Filter (Cassette Type)
      • FC: Filter Cassette for TFM/ WTFM
      • ILF:Fixed Wavelength Optical Module with 8mm square in cross section
      • FBPF:Wavelength Tunable Optical Module with 8mm square in cross section
      • TMUX:3-port Transmission/Reflection Module
      • ITF-201A Series Wavelength/FWHM Tunable Filter
  • Air Sterilizer
  • Contact us
  • 日本語

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