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RGB Bandpass filters
RGB Bandpass Filters (Tri-Color Dichroic Bandpass Optics)
RGB bandpass filters (also classified as dichroic tri-color filters or narrow-band RGB optics) are specialized thin-film interference filters designed to cleanly separate or isolate the primary red, green, and blue spectral bands of visible light.
Functions:
Engineered with high-density multi-layer dielectric interference coatings deposited via PVD-EBGE on optical glass substrates. They deliver high peak in-band transmission ($T \ge 90\%–95\%$) across dedicated Red (~620–700 nm), Green (~500–570 nm), and Blue (~420–490 nm) regions with steep edge transitions and deep cross-talk rejection. This precise spectral separation enhances chromatic contrast and color accuracy in color machine vision, multi-channel imaging, and trichromatic optical engines.
Applications:
Multi-CCD/CMOS camera systems
Optical projection engines
Fluorescent color imaging
Trichromatic color sorting equipment
High-precision color measurement instruments
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Automated Optical Inspection (AOI) machine vision systems
#Information and Notes
ITEM NO: R6070
Spectral Characteristics
Tave<5% 420-550nm
Tave>75% @ 630-660nm
Tave<5% @ 750-1100nm
Physical Characteristics
Glass: 1.1mm
Borosilicate: 1.1mm
Square: 8x8 - 220x220mm
Round: Dia8 - 210mm
Resistant Temperature
Glass: 150℃
Borosilicate: 450℃
ITEM NO: G500/560
Spectral Characteristics
T50%=505/545 +/- 5nm
Tave>88% @ 525-545nm
Tave<5% @ 620-680nm
Tave<3% @ 400-450nm
Physical Characteristics
Glass: 1.1mm
Borosilicate: 1.1mm
Square: 8x8 - 220x220mm
Round: Dia8 - 210mm
Resistant Temperature
Glass: 150℃
Borosilicate: 450℃
ITEM NO: BP4050
Spectral Characteristics
Tave>85% @ 430-470nm
Tave<1% @ 500-900nm
Tave<1% @ 200-370nm
Physical Characteristics
Glass: 1.1mm
Borosilicate: 1.1mm
Square: 8x8 - 220x220mm
Round: Dia8 - 210mm
Resistant Temperature
Glass: 150℃
Information and Notes
1. RGB bandpass filters feature precision thin-film dielectric interference coatings comprising approximately 24 to 48 layers vacuum-deposited on optical glass substrates. The layer count and spectral passbands can be customized according to specific customer requirements.
2. Vacuum thin-film depositions are executed using Physical Vapor Deposition with Electron Beam Gun Evaporation (PVD-EBGE) technology, ensuring exceptional coating packing density, precise center wavelength control, and high thermal resistance.
3. Spectral transmittance curves represent physical measurements captured at normal incidence (0° angle of incidence, AOI). Transmittance values indicate average performance across target visible passbands.
4. Transmittance curves reflect actual physical sample measurement data and are subject to minor manufacturing tolerances between production lots while strictly conforming to target engineering spectral definitions.
5. Website specifications are for reference purposes; final product shipments adhere to the technical specifications mutually agreed upon by both parties.
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