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Visual of filters “flexing” between the gentle force of tweezers
Ultra-Thin Longpass and Shortpass Filters are designed and constructed out of ultra-thin, flexible polymers and dyes. These filters are scratch insensitive and as durable as most industry hard oxide coatings. Comprised of hundreds to thousands of polymeric and dyed sub-layers, these filters can achieve high wavelength selectivity across the visible and near-infrared spectrum. Due to the low cost, low weight, and thin and flexible nature, these filters are perfect for high volume consumable applications such as vision and electronics or point of care devices for small and compact diagnostics equipment.
Flexible Material Design
350nm to 1600nm Spectral Range
Notch, Edge, Longpass, Shortpass, and Bandpass Filter Design Capabilities
Multi-Notch and Multi-Bandpass Filters Available
Scratch Insensitive
OD 2 Absolute Design, OD 4 Blocking Achievable
>90% Achievable Transmission
Ultra-thin Design (200-500µm Thickness)
Traditional Filter | Hard Coated Filter | Ultra-Thin Filters | |
---|---|---|---|
Substrate: | Stack of Glass, Metal, Plastic | Single Piece of Glass | Stack of Ultra-Thin Polymers |
Transmission (VIS only): | 75% (approx.) | >90% | >90% |
Clear Aperture: | >80% | >80% | >90% |
Thickness: | 5mm | >1mm | 200 - 500µm |
Blocking, Optical Density: | >OD 4 average | >OD 6 absolute | >OD 4 average |
Temperature Stability: | Medium | High | Medium |
Cut-on Steepness: | >3% | <1% | 2% |
Cut-on Tolerance: | >3% | <1% | 2% |
Price: | $$ | $$$ | $ |
Figure 1: Comparison of a Traditional Filter, Hard Sputtered Filter, and an Ultra-Thin Filter
Figure 2: Design and Construction of an Ultra-Thin Filter
Everix Ultra-Thin Longpass Filters combine high performance and low cost in a new class of thin film interference filters that are flexible, scratch insensitive, and ultra-thin (200 - 500μm). These filters feature cut-on wavelengths in the visible range with cut-on tolerances of ±3% typical and >85% average transmission. The flexible extruded thin film filters are complex multilayer filters, which excel across a variety of needs, including longpass, edge, and notch filters. Everix Ultra-Thin Longpass Filters are ideal for demanding vision and medical technology applications.
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