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Kenko Tokina Co., Ltd. Filter Catalog

Kenko Tokina Co., Ltd. Filter Catalog

Featuring a variety of glass filters suitable for various applications, including the newly developed W series!

This catalog introduces filters manufactured by Kenko Tokina Co., Ltd. They are used in a wide range of fields, including photography, medical applications, measuring instruments, electronics, and scientific research. We have included all spectral characteristics and detailed specifications, starting with our newly developed "W Series." [Contents] ■ Main products handled ■ Processing and quality of color filters ■ Processing options ■ Sharp cut filters ■ Infrared transmission filters ■ W Series, etc. *For more details, please refer to the PDF document or feel free to contact us.

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Colored glass filter "Sharp Cut Filter"

Colored glass filter "Sharp Cut Filter"

Glass filters suitable for various applications such as imaging equipment and medical devices are featured!

The "Sharp Cut Filter" blocks as much light as possible below a certain wavelength while allowing longer wavelengths to pass through as completely as possible, within the wavelength range of 350nm to 800nm. There are 15 types ranging from L-37 to R-66, where the symbols L, Y, O, and R represent the color tone of the filter, and the two-digit numbers indicate the transmission limit wavelength. The filters from L-42 to R-66 are "color glass," and by adjusting the color temperature, it is possible to change the spectral characteristics to some extent. 【Features】 ■ Ability to change spectral characteristics by adjusting color temperature ■ JIS B7113 (Sharp cut glass filter for photography) ■ No angle dependence due to incident angle ■ No change in transmission and absorption wavelength characteristics ■ Relatively large glass substrates can be cut to any size through post-processing *For more details, please refer to the PDF materials or feel free to contact us.

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Colored glass filter "Infrared Transmission Filter"

Colored glass filter "Infrared Transmission Filter"

For light sources such as infrared alarms and night vision devices! Color glass filters that transmit infrared wavelengths.

The "infrared transmission filter" is a filter that absorbs almost all visible light and transmits infrared light. There are "R series" and "IR series" that cut the infrared range relatively sharply, and "RM series" that cut the infrared range gradually. They are widely used as light sources in infrared alarm systems and night vision devices. 【Features】 ■ Absorbs almost all visible light and transmits infrared light ■ No angle dependence due to the angle of incidence ■ No change in transmission and absorption wavelength characteristics ■ Can be cut to any size through post-processing, even with relatively large glass substrates *For more details, please refer to the PDF document or feel free to contact us.

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Colored glass filter "Green Filter"

Colored glass filter "Green Filter"

A filter that transmits a relatively narrow band of wavelengths centered around the green wavelength range.

The "green filter" is a filter that transmits a relatively narrow band of wavelengths centered around the green wavelength range. It is named after the wavelength at which its transmittance is at its highest. If you want to achieve maximum transmittance at a specific wavelength or absorb wavelengths below a certain point, this can be accomplished by bonding these filters with sharp cut filters. It is used as a contrast effect filter in black and white photography, as well as a green filter for tricolor decomposition. 【Features】 ■ Transmits a relatively narrow band of wavelengths ■ Used as a contrast effect filter in black and white photography ■ No angle dependence due to the angle of incidence ■ No change in transmittance/absorption wavelength characteristics ■ Can be cut to any size through post-processing, even with relatively large glass substrates *For more details, please refer to the PDF document or feel free to contact us.

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Color glass filter "Color correction filter"

Color glass filter "Color correction filter"

Used for sensitivity correction of exposure meters! A filter that selectively absorbs infrared and near-infrared light.

The "Color Correction Filter" is a filter that adjusts the color light of the blue, green, and red parts of the visible spectrum, and there is a cyan series. The "Cyan Filter" is a filter that selectively absorbs the red and near-infrared parts, with no fading due to the light source, and is used for image tube sensitivity correction, exposure meter sensitivity correction, and so on. 【Features】 ■ Selectively absorbs the red and near-infrared parts ■ No fading due to the light source ■ Used for image tube sensitivity correction, exposure meter sensitivity correction, etc. ■ No change in transmission and absorption wavelength characteristics ■ Can be cut to any size through post-processing even with relatively large glass substrates *For more details, please refer to the PDF document or feel free to contact us.

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Color glass filter "Neutral Density Filter"

Color glass filter "Neutral Density Filter"

Control the intensity of light without absorbing energy at specific wavelengths!

The "Neutral Density Filter" is a filter with a flat spectral transmittance in the visible range. It is suitable for controlling the intensity of light without selectively absorbing the energy of specific wavelengths, making it ideal for adjusting exposure during color photography and for regulating light levels in various measurement instruments. Due to variations in spectral characteristics depending on the melting conditions, care is taken to maintain the specified performance by adjusting the thickness. Therefore, by differentiating the types of products and adjusting the thickness, it is possible to create combinations of filters with any average transmittance. 【Features】 ■ Flat spectral transmittance in the visible range ■ Controls light intensity without absorbing energy at specific wavelengths ■ Used for exposure adjustment in color photography and light level regulation in various measurement instruments ■ Maintains specified performance by adjusting thickness ■ Capable of creating combinations of filters with any average transmittance *For more details, please refer to the PDF document or feel free to contact us.

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Colored glass filter "Heat Absorbing Filter"

Colored glass filter "Heat Absorbing Filter"

Prevention of destruction due to rapid heating and cooling! Glass filter that absorbs heat rays.

The "heat ray absorption filter" is a somewhat bluish filter glass that has a high transmittance in the visible range and absorbs heat rays (infrared rays). "HA-30" and "HA-50" are phosphate glasses that absorb heat rays emitted from light sources very well, making them particularly effective for slide projectors and various lighting fixtures. To prevent the breakage of filter glass due to rapid heating and cooling, we can also supply tempered glass using thermal strengthening methods. 【Features】 ■ High transmittance in the visible range and absorbs heat rays (infrared rays) ■ Used in slide projectors and various lighting fixtures ■ Prevents breakage due to rapid heating and cooling ■ Tempered glass can also be supplied *For more details, please refer to the PDF materials or feel free to contact us.

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Color glass filter "Wavelength Calibration Filter"

Color glass filter "Wavelength Calibration Filter"

Used for wavelength calibration, it serves as a dichroic filter! It significantly absorbs specific wavelengths.

The "Wavelength Calibration Filter" is used for wavelength calibration as a dichroic filter. V-10 and V-30 contain neodymium, while HY-1 contains holmium, significantly absorbing specific wavelengths. 【Features】 ■Significantly absorbs specific wavelengths ■V-10 and V-30 contain neodymium ■HY-1 contains holmium ■Used for wavelength calibration as a dichroic filter *For more details, please refer to the PDF document or feel free to contact us.

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Bandpass filter

Bandpass filter

Custom production of blocking areas and more is possible! A filter that extracts only specific wavelengths using dielectric multilayers.

At Kenko Chemical Co., Ltd., which handles precision optical components, image processing lenses, and lighting, we offer "bandpass filters." These filters use dielectric multilayer films to extract only specific wavelengths. Custom manufacturing is also possible for the width of the transmission wavelength band and the blocking region that cuts light. We can also manufacture band rejection filters that cut specific wavelengths. 【Specifications (excerpt)】 ■ Model: BP-466-10-27 ■ Center wavelength: λ=466±5nm ■ Transmittance: T>85% ■ Half-width: 10nm ■ Stop band: 300-1000nm ■ Incident angle θ: 0° ■ Outer diameter: Ф27 ■ Thickness: 1.8t ■ Material: Synthetic quartz *For more details, please refer to the PDF document or feel free to contact us.

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Bandpass Filter "UL254S"

Bandpass Filter "UL254S"

It has excellent transparency in the ultraviolet range, including the UV-C range, while blocking the visible spectrum! We can process it to your desired thickness.

The "UL254S" is an excellent UV bandpass filter with superior ultraviolet transmission and visible absorption in the UV-C wavelength range. It has high resistance to solarization, and the maximum available size is 300(W) × 400(L). It can reduce bacteria and is suitable for applications requiring UV fluorescence, such as analytical instruments in the biomedical field and mineral lamps. 【Features】 ■ Excellent ultraviolet transmission and visible absorption in the UV-C wavelength range ■ High resistance to solarization ■ Maximum available size: 300(W) × 400(L) ■ Compliant with HOYA, UL254, RoHS, Directive (2011/65/EU) ■ Does not contain harmful substances such as lead, cadmium, or arsenic *For more details, please refer to the PDF document or feel free to contact us.

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Colored glass filter "Blue Filter"

Colored glass filter "Blue Filter"

Blue filter used for three-color decomposition, wavelength selection, and color correction.

The "Blue Filter" is a filter that transmits a relatively narrow band of wavelengths centered around the blue wavelength range. It is named after the wavelength at which its transmission rate is highest. It is used for tricolor decomposition, wavelength selection, and color correction. 【Features】 ■ Transmits a relatively narrow band of wavelengths ■ Used for tricolor decomposition, wavelength selection, and color correction ■ No angle dependence due to the angle of incidence ■ No change in transmission and absorption wavelength characteristics ■ Can be cut to any size through post-processing, even with relatively large glass substrates *For more details, please refer to the PDF document or feel free to contact us.

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Color glass filter "Color temperature conversion filter"

Color glass filter "Color temperature conversion filter"

Glass filters used for color temperature conversion of light sources or for adjusting color temperature during shooting.

The "Color Temperature Conversion Filter" is a filter that has a smooth upward or downward sloping transmission curve in the visible range. It is used for color temperature conversion of light sources or for adjusting color temperature during shooting. By adjusting the thickness of the polished material, filters with any desired color temperature conversion capability can be created. When the color of a light source visually compares to the color of a perfect black body heated to a certain temperature, and is the same or very similar, the temperature of the perfect black body is referred to as the color temperature. The reciprocal of the color temperature multiplied by 106 is taken as a unit, called the "mired," and is used as a unit to express color temperature conversion capability. 【Features】 ■ Filters with any desired color temperature conversion capability can be created by adjusting the polished thickness. ■ Used for color temperature conversion of light sources or for adjusting color temperature during shooting. ■ No angle dependency due to the angle of incidence. ■ No change in transmission and absorption wavelength characteristics. ■ Even relatively large glass substrates can be cut to any size through post-processing. *For more details, please refer to the PDF document or feel free to contact us.

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Colored glass filter "Ultraviolet Transmission and Visible Absorption Filter"

Colored glass filter "Ultraviolet Transmission and Visible Absorption Filter"

A dark-colored glass filter used to isolate ultraviolet light.

The "UV Transmission and Visible Absorption Filter" is a dark-colored filter glass that transmits ultraviolet light, absorbs visible light, and slightly transmits near-infrared light. The numbers associated with the glass type represent the wavelengths at which the maximum transmission rate occurs. It is primarily used to isolate ultraviolet light and is utilized to selectively transmit wavelengths of 253.7 nm and 365 nm, which are representative spectral lines of mercury lamps. 【Features】 ■ Transmits ultraviolet light and absorbs visible light ■ Slightly transmits near-infrared light ■ Used when isolating only ultraviolet light ■ Utilized to selectively transmit wavelengths of 253.7 nm and 365 nm *For more details, please refer to the PDF document or feel free to contact us.

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Color Glass Filter "W Series Sharp Cut Filter"

Color Glass Filter "W Series Sharp Cut Filter"

Introducing the newly developed W series glass filters suitable for various applications!

The "W Series Sharp Cut Filter" is a new series that replaces the transmission limit wavelength with λτ 0.5 and is based on internal transmission rates. Conventional sharp cut filters were products that complied with domestic standards, but the "W Series" is designed to meet the needs of the global (World) market. 【Features】 ■ Products designed to meet the needs of the global market ■ No angle dependence based on the angle of incidence ■ No changes in transmission and absorption wavelength characteristics ■ Can be cut to any size through post-processing, even with relatively large glass substrates *For more details, please refer to the PDF document or feel free to contact us.

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