Bunkoukeiki Co., Ltd
Bunkoukeiki Co., Ltd. which was established in Sept, 1977 as one of the affiliated company of JASCO Corporation, specializes in customizing the spectroscopic instruments and optical measurement instruments which are specific to the needs and applications to the academic customers, governmental institutions, and R&D departments for the industries.
- +81-90-4452-7824
- +81-42-644-3881
- sales@bunkoukeiki.co.jp
- 4-8,Takakura-machi,Hachioji-shi
Tokyo, 192-0033
Japan
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Excitation Light Source
Various spectral irradiation is possible by combining various light sources + spectroscope + irradiation system.We will also respond to special order correspondence. We will provide light suitable for your desired intensity such as light intensity and wavelength.
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Monochromator (spectrometer)
The optical system of the spectrometer monochromator adopts "Asymmetric deformed Czerny · Turner mount system".Although general stray light due to multiple diffraction can not be avoided in the general Czerny-Turner mount method, by adopting the asymmetric deformed Czerny-Turner mount method, this stray light is eliminated and it becomes a bright and high resolution monochromator.
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Polychrometer (multichannel spectrometer)
It is a spectrometer that reduces the aberration of the optical system to the utmost limit because it measures effectively using multichannel detectors such as CCD, CMOS, InGaAs etc. Since the spatial resolution is high on the whole surface of the light receiving surface of the detector, it can be used for the following applications.
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Semiconductor Material Evaluation Equipment
Equipment for evaluating semiconductor materials using various measuring methods is available.
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Solar Simulator
It is an LED light source for evaluating the performance of organic solar cells in indoor light applications.A neutral white LED light source equivalent to a color temperature of 5000 K, achieving an effective irradiation area of 50 × 50 mm.The illuminance can be changed without changing the height of the light emitting surface with low illuminance (200 lx) and high illuminance (1000 lx).
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Spectral Response (Spectral Sensitivity) Measurement
It is used to measure the spectral response (spectral sensitivity) of photoelectric conversion devices (photodetectors / sensors) such as silicon photodiodes and CCD · CMOS image sensors . Measurement in the broadband wavelength region can be performed with low stray light.
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Transmission / Reflection Measurement
Measure spectral transmittance and reflectance of optical elements such as lens, plate glass, filter, reflector, prism and so on.The wavelength range is 350 to 1100 nm as standard and 220 to 2000 nm as an option.Reflection measurement of a general spectrophotometer can only measure several types of fixed angles, but in this device the incident angle of the sample at the time of reflectance measurement is variable at an arbitrary angle and the minimum incident angle at reflectance measurement is 15 ° ( Optical axis angle 30 °) can be set up.
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Spectral Sensitivity Measurement
It is a device which measures the spectral sensitivity characteristics and quantum efficiency of various solar cells by irradiating solar cells with monochromatic light of constant energy and constant photon without wavelength dependence. We are constantly monitoring irradiation light quantity with our real real time light quantity monitor control system and are not influenced by fluctuation of light source, so it is a well-established control system with excellent measurement stability and measurement reproducibility.
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Vacuum UV Measurement
As a spectrometer, we have been manufacturing various vacuum ultraviolet spectroscopy systems mainly based on the Seya Hokaoka type spectrometer since 1977 when the company was established.The newly developed KV series is a system that can measure up to 120 nm with a nitrogen gas purge only by using a special optical element and a spectroscope of newly developed optical arrangement, eliminating the need for a vacuum pump and the like.
