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Precision Optical Filters for Photography & Advanced Imaging
Precision photographic optical filters (encompassing camera lens filters, photographic optical windows, and creative/technical light modifiers) are high-grade optical components engineered to control light exposure, eliminate unwanted surface reflections, enhance chromatic contrast, and manage spectral transmission before light reaches the image sensor.
Functions:
Manufactured using high-flatness optical glass substrates (e.g., SCHOTT B270, Corning EAGLE XG, AGC soda-lime glass) paired with precision PVD-EBGE thin-film dielectric coatings or high-purity absorptive glass formulations. Product ranges cover UV-Cut/Protector filters (suppressing atmospheric haze and protecting lens elements), Circular/Linear Polarizers (eliminating non-metallic surface glare and deepening sky saturation), Neutral Density (ND) filters (controlling exposure stop reduction without color shifts), and IR-Cut/IR-Pass filters for conversion of digital sensors between standard visible spectrum and specialized infrared photography.
Applications:
Astrophotography
Forensic photography
Aerial drone photography
Machine vision photography
DSLR and mirrorless camera systems
Professional cinematography lenses
Specialized optical image capturing devices.
Type: UV, Infrared, Bandpass filters, Density filters, Glass filters.
Ring: M32, M37, M46, M49, M52, M55, M58, other.
Information and Notes
1. Photographic filters can be custom-engineered to satisfy specialized spectral functions, including optical bandpass filters, steep cutoff filters, longpass/shortpass filters, and custom dimensions fitted with precision anodized aluminum mounting rings.
2. Absorptive glass filters in this series are produced from optical glass formulations cast into raw blocks, which are subsequently sawed, precision-ground, and double-side optically polished into high-flatness glass sheets.
3. Interference filter types utilize multi-layer dielectric thin-film coatings deposited via Physical Vapor Deposition with Electron Beam Gun Evaporation (PVD-EBGE) technology for precise spectral edge placement and high optical throughput.
4. Hybrid optical filter designs combine absorptive optical glass substrates with PVD-EBGE multi-layer dielectric interference coatings to achieve maximum out-of-band rejection and high in-band signal purity.
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