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Optical Low Pass Filters

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Product Description:
1. Optical low-pass filters (OLPF) are mainly for high image quality by eliminating screen effect, which was popular in CCD or CMOS array detector image systems. OLPF was designed by crystal birefringence characteristic, and depends on various CCD sp...

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Bandpass Filters

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Product Description:
Combining an LP filter and an SP filter produces a bandpass (BP) filter. These filters usually have lower transmittance values than SP and LP filters, and block all wavelengths outside a selected interval, which can be wide or narrow, depending on th...

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Color Filters

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Product Description:
Color filters are made of glass for maximum permanence, of liquid solutions in cells with transparent faces for flexibility of control, and of dyed gelatin or plastic (usually cellulose acetate) for economy, convenience, and flexibility. The plastic ...

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Notch Filters

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Product Description:
An optical notch filter has a suspension of small absorbing particles which blocks a narrow band of frequencies. The small absorbent particles are suspended as a colloidal system which can either be solid, liquid or gas as host material. The absorbin...

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Shortpass Filters

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Product Description:
A shortpass (SP) filter is an optical interference or coloured glass filter that attenuates longer wavelengths and transmits (passes) shorter wavelengths over the active range of the target spectrum (usually the ultraviolet and visible region). In fl...

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Longpass Filters

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Product Description:
A longpass (LP) filter is an optical interference or coloured glass filter that attenuates shorter wavelengths and transmits (passes) longer wavelengths over the active range of the target spectrum (ultraviolet, visible, or infrared). Longpass filter...

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Neutral Density Filters

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Product Description:
Neutral density (ND) filters have a constant attenuation across the range of visible wavelengths, and are used to reduce the intensity of light by reflecting or absorbing a portion of it. They are specified by the optical density (OD) of the filter, ...

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