Features

• A filter that extracts light in a specific wavelength range.
• High transmittance can be obtained in the transmission band, but light can be almost blocked except in the transmission band.
• The use of a dielectric multilayer coating with an ionic process provides extremely high environmental resistance and stability.
• Since no absorption filter is used, there is little deterioration of the device due to temperature rise caused by absorption of heat rays or absorption of ultraviolet light, and it can be used for various light sources.
• The BP type is designed to provide high OD7 optical isolation characteristics at longer wavelengths than the transmission band, while the BA type is designed to provide high OD7 optical isolation characteristics at shorter wavelengths than the transmission band.
• It can be used to cut non-excitation light for fluorescence observation or to cut non-excitation light for sample observation.
• The BP and BA types are further divided into two types, the broadband type and the narrowband type, and can be selected according to the purpose.
• B270 (R) is a registered trademark of SCHOTT AG.
• Holders are available for securing the filter.
• * The transmittance wavelength characteristic of a filter is a combination of the coating characteristics of both the front and back surfaces, or multiple elements.
• * Transmittance wavelength characteristics may change when used at angles other than 0°. (In general, the larger the incident angle, the more the wavelength characteristic shifts toward the shorter wavelength.) * * The arrow indicating the direction in which the ray is incident differs between the BP type and BA type.
• * Although the interference filter is designed to withstand high temperatures, safety and filter performance cannot be guaranteed if the filter is placed near a lamp (mercury lamp) that emits strong heat.