Advanced Hard-Coating Solutions for Fluorescence, LiDAR, and Machine Vision
In advanced optical systems, a filter is not merely a passive window; it is the primary gatekeeper of data integrity. Whether for advanced imaging or laser sensing, the goal is identical: maximize the Signal-to-Noise Ratio (SNR). An optical filter defines the limit of what your sensor can detect.
At OPTOStokes, we move beyond traditional absorption glass and soft coatings. We utilize Ion-Assisted Deposition (IAD) Hard Coating technology to create precision optics that withstand environmental stress while delivering theoretically perfect spectral profiles.
1. Technology: The Hard Coating Advantage
Traditional "soft coating" filters rely on laminated layers that degrade with heat and humidity. In contrast, OPTOStokes hard coating filters are fused directly to the substrate. This results in:
- Spectral Stability: Zero wavelength shift under temperature variations.
- Durability: Scratch-resistant surfaces that meet Mil-Spec standards.
- Performance: Achieving OD6 blocking (optical density > 6.0) to eliminate background noise completely.
2. Classification by Function
Precision Bandpass Filters
Used to isolate a specific spectral slice. For applications like laser rangefinding (LiDAR), a narrow bandpass filter is critical to block sunlight while transmitting the laser signal.
- Ultra-Narrow: ultra narrow bandpass filters with FWHM < 3nm for precise laser line cleanup.
- Wide Band: wide FWHM bandpass options for broadband collection.
Edge Filters (Longpass & Shortpass)
These filters create a sharp "step" in the spectrum. A longpass filter (e.g., LP530) blocks all wavelengths below a certain point, essential for separating excitation from emission in fluorescence.
3. Critical Application Sectors
Life Sciences & Fluorescence Microscopy
In fluorescence, the separation of excitation light from weak emission signals is paramount. We provide complete filter sets compatible with major microscope brands.
| Application | Key Requirement | OPTOStokes Solution |
|---|---|---|
| DNA Sequencing / FISH | Zero crosstalk between channels | multi-channel microscopy sets with OD6 blocking. |
| Live Cell Imaging | High photon throughput | high transmission filters (>90%) to reduce phototoxicity. |
| NIR Probes | Deep tissue penetration | Specific Cy7 and wide NIR bandpass options. |
Industrial Automation & Machine Vision
Machine vision systems rely on contrast. optical filters for machine vision allow cameras to ignore ambient lighting and focus on the inspection target. Whether it's a laser bandpass filter for triangulation or a blue block filter to enhance contrast, we have the stock.
LiDAR & Autonomous Systems
For autonomous driving and drone mapping, the signal return is weak. Filters like the 905nm laser bandpass or BP905nm series filter out solar background noise, extending the effective range of the sensor.
Why Partner with OPTOStokes?
R&D projects often require specifications that off-the-shelf parts cannot meet. We specialize in custom optical filter manufacturing.
- Rapid Prototyping: From design to sample in weeks, not months.
- Volume Scalability: Consistent precision coating quality from prototype to mass production.
- Technical Support: Direct access to optical engineers who understand AR coating design and system integration.
Ready to optimize your optical pathway? Contact our engineering team at sales@optofilters.com to discuss your specific requirements, whether you need a single OEM prototype or high-volume production.
