Products Description
BP735nm Bandpass Filter | CWL 735±2nm, FWHM 30±2nm, High OD Blocking
This BP735nm bandpass filter is a precision member of our bandpass filters portfolio, engineered with advanced thin film coating technology to deliver consistent high transmission within the 725 to 745 nanometer passband and exceptional out-of-band rejection. It features high OD blocking across multiple spectral ranges, making it an ideal choice for demanding optical systems where stray light suppression and signal purity are critical for reliable measurement and imaging results.
Technical Specifications
| Parameter | Specification |
| Center Wavelength (CWL) | 735 ± 2nm |
| Full-Width-Half-Maximum (FWHM) | 30 ± 2nm |
| Passband Transmission | 725–745nm with transmission greater than 90% |
| Blocking Ranges & Optical Density | 350–710nm: average OD greater than 6 (minimum OD greater than 5) 760–800nm: average OD greater than 6 (minimum OD greater than 5) 800–1050nm: OD greater than 3 |
| Filter Type | Thin-film interference bandpass filter |
Typical Applications
This filter is optimized for small-animal in vivo imaging systems, where high signal transmission and deep background blocking directly improve image quality and experimental accuracy. The moderately wide passband supports efficient collection of fluorescent signals, while the multi-stage high OD rejection eliminates excitation light leakage and ambient noise, helping researchers obtain clear, high-contrast images for biological and preclinical studies.
Customization & Service
OPTOStokes maintains an extensive in-stock selection of standard BP735nm filters for fast delivery. We support full customization including round, square and custom-shaped substrates, as well as optional mounting rings to match your mechanical assembly requirements. Every unit undergoes rigorous quality inspection to ensure world-class precision and long-term coating stability, with reliable lead times for both prototype and bulk production orders.
Support & Inquiry
Many R&D engineers and procurement teams face challenges such as long lead times for high-OD specialty filters, limited technical support for custom specifications, and inconsistent coating quality from suppliers. Our optical specialists provide professional parameter validation and application guidance to help you select the optimal solution. To request samples, formal quotations or custom design support, please send your requirements to sales@optofilters.com or submit an inquiry through our official website.
Tags: Bandpass-filters 735nm-filter high-od-blocking thin-film-coating biomedical-imaging
