The OPTOStokes LP555 Longpass Filter (Part Number: 21106042) is a precision optical component designed to transmit wavelengths longer than the 555nm cut-on point while effectively blocking the ultraviolet, blue, and green spectrum. With a sharp transition edge, this filter achieves high throughput (>90%) starting immediately at 560nm and extending into the Near-Infrared (NIR) up to 1100nm. It is an ideal solution for applications requiring high spectral purity and enhanced signal contrast in the Vis-NIR range.
Technical Specifications
Engineered using high-grade optical glass and advanced thin-film deposition, this filter delivers consistent performance for imaging and sensing systems.
| Specification | Parameter / Value |
|---|---|
| Product Type | Longpass Filter (LP555) |
| Reference Part Number | 21106042 |
| Passband (Transmission) | 560nm - 1100nm @ T > 90% |
| Stopband (Blocking) | 350nm - 555nm @ T < 1% |
| Thickness | 1.0mm |
| Surface Quality | 60/40 (Scratch/Dig) |
Primary Applications
The LP555 is a versatile longpass filter used to suppress short-wavelength noise and isolate specific spectral bands:
- Fluorescence Imaging: Acts as a barrier emission filter to block excitation light (blue/green) while passing yellow/red fluorescence signals.
- Machine Vision: Enhances contrast in inspection systems by blocking ambient UV and visible light, allowing only red or IR LED illumination to pass.
- Spectral Sorting: Precisely separates the wavelength range for multi-channel sensors and detectors.
- Photography: Used as a contrast filter to darken skies and reduce atmospheric haze in monochrome photography.
Customization & Engineering Support
OPTOStokes offers comprehensive manufacturing services to adapt the LP555 to your mechanical constraints.
- Dimensions: While standard filter thickness is 1.0mm, we can process sizes from micro-optics (2mm) up to large aperture plates (100mm+). Custom shapes (round, square, rectangular) are available via precision dicing.
- Optical Coating: We can adjust the optical coating design to modify the cut-on wavelength (400-850nm) or increase blocking depth (OD) for higher sensitivity applications.
- Mounting: Filters can be supplied unmounted or assembled into threaded aluminum rings for easy system integration.
Why Choose OPTOStokes?
Sharp Spectral Transition: The transition from blocking (555nm) to transmission (560nm) is exceptionally steep, minimizing signal loss and ensuring precise spectral separation.
Quality Assurance: With a surface quality of 60/40, this imaging filter minimizes scattering and defects, ensuring clear image quality for industrial and scientific cameras.
Ready to Order? Reference Part #21106042 for stock inquiries. Contact our sales team at sales@optofilters.com for volume pricing or to discuss custom optical design requirements.
