Products Description
BP694nm Bandpass Filter | CWL 694nm, FWHM 40nm, High OD Blocking
The OPTOStokes BP694nm bandpass filter is a precision spectral component optimized for high-signal, low-noise optical systems. As part of our extensive catalog of bandpass filters, this unit delivers consistent peak transmission across the 680 to 705 nanometer range, paired with deep multi-band out-of-band blocking to suppress unwanted background signal, ensuring reliable measurement and imaging performance for demanding life science and industrial applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Center Wavelength (CWL) | 694 nm ± 3 nm |
| Full Width at Half Maximum (FWHM) | 40 nm ± 3 nm |
| Passband Range | 680 nm to 705 nm |
| Peak Passband Transmission | Greater than 90 percent |
| Blocking Range 1 (350–664 nm) | Average optical density greater than 6, minimum optical density greater than 5 |
| Blocking Range 2 (730–800 nm) | Average optical density greater than 6, minimum optical density greater than 5 |
| Blocking Range 3 (800–1050 nm) | Optical density greater than 3 |
| Design Angle of Incidence | 0 degrees |
Typical Applications
This high-performance 694nm bandpass filter is widely integrated into precision optical systems across multiple fields:
Fluorescence Microscopy Systems
Fluorescence Detection and Life Science Instruments
Biomedical Imaging Equipment
Laser Line Cleanup and Spectral Analysis Systems
Customization & Service Advantages
Manufactured with advanced thin film coating technology, every BP694nm filter undergoes full spectral validation before shipment to ensure exceptional coating uniformity and batch-to-batch consistency. OPTOStokes supports full customization of form factors, including circular, square, and custom irregular geometries, with optional mounting rings available for seamless integration into your optical assembly.
We maintain an extensive in-stock selection of standard bandpass filters for fast turnaround, while custom orders are backed by reliable lead times and guaranteed quality. All products are built to world-class precision standards to meet the strict requirements of OEM production and R&D prototyping.
Technical Support & Order Enquiries
For optical engineers and procurement teams, sourcing bandpass filters with consistent high OD blocking performance, accurate center wavelength tolerance, and predictable delivery schedules can present significant challenges. OPTOStokes addresses these pain points through in-house coating expertise, rigorous quality control protocols, and transparent production planning, with direct access to in-house optical specialists for technical consultation and custom design support.
To request a complete datasheet, discuss custom dimensions and specifications, or check current stock availability, contact our team at sales@optofilters.com or submit an enquiry directly through our website. We respond to all technical and commercial requests within one business day.
Tags: bandpass filters fluorescence detection high OD blocking laser systems biomedical imaging thin film coating
