GLS492 492nm Visible Light Absorbing Dye for Optical Filters & PC
What is GLS492?
GLS492 is a premium visible light absorbing dye engineered for precise optical attenuation at exactly 492nm. Distinguished by its ultra-sharp absorption band, exceptional thermal stability for Polycarbonate (PC) processing, and high batch-to-batch consistency, it is the optimal choice for high-end optical filters and secure transparent plastics.
Key Features:
- Sharp Absorption / Narrow Band: Precise cut-off at 492±2nm with high transmittance in other visible ranges.
- High Heat Resistance (PC Compatible): Withstands extreme processing temperatures, perfect for PC/PMMA injection molding and extrusion.
- High Batch Consistency: Excellent manufacturing stability guarantees reliable coloration for mass production.
- Low Background Interference: Non-fluorescent nature ensures clear optical paths for sensor applications.
GLS492 Typical Specifications
| Property | Specification |
|---|---|
| Peak Absorption | 492 ± 2nm |
| Appearance | Dark red crystalline powder |
| Heat Resistance | Excellent (Compatible with PC/PMMA high-temp processing) |
| Batch Consistency | High (ΔE tightly controlled for industrial mass production) |
| Solubility | Soluble in Methylene Chloride (MC), Toluene, Acetone |
| Optical Property | Non-fluorescent, high optical density at peak |
Spectrum Insights: As highlighted in the absorption curve, GLS492 possesses a remarkably steep and narrow absorption peak at 492nm. The baseline remains exceptionally low across the 550–700nm and 250-400nm spectrums. This unique property allows optical filters and PC lenses to precisely block 492nm target light while maintaining high overall visual transparency.
GLS492 Applications
- Laser Protection & Optical PC Lenses
Widely compounded into Polycarbonate (PC) to manufacture laser-safe eyewear and windows. It effectively blocks 490–500nm lasers (e.g., argon-ion lasers) without degrading the plastic matrix during high-temperature molding. - Notch Filters for Imaging & Machine Vision
Ideal for creating custom transparent notch filters. Its sharp absorption ensures specific wavelength rejection with minimal impact on color fidelity in camera lenses and machine vision systems. - Optical Sensors & Photodetectors
Incorporated into sensor coatings or casings to filter out ambient green-blue light, significantly enhancing the signal-to-noise ratio in advanced photodetectors. - Anti-Counterfeiting Security Inks
Can be formulated into specialized security inks and coatings. The unique 492nm narrow signature enables highly secure, machine-readable covert authentication.
Frequently Asked Questions (FAQ)
Q1: What is the absorption peak of GLS492?
A1: The absorption peak of GLS492 is 492±2nm, measured in methylene chloride (MC). This precise wavelength makes it ideal for targeted optical filtering and anti-counterfeiting applications.
Q2: Is GLS492 suitable for plastics?
A2: Yes, GLS492 is widely used in PC, PMMA, and other thermoplastic resins. It provides uniform transparent coloring and maintains stability during high-temperature extrusion and injection molding processes.
Q3: Can GLS492 be used in water-based inks?
A3: GLS492 is primarily soluble in MC. However, we offer customization services to adjust its solubility for water-based systems, depending on your specific application needs.