• A plot showing the transmission of a bandpass filter with wavelength on the x-axis and transmission on the y-axis, indicating a peak transmission at approximately 815nm with a FWHM of 35nm.
1 2

BP815-35 Bandpass Filter(CWL=815nm,FWHM=35nm)

BP815-35 Bandpass Filter(CWL=815nm,FWHM=35nm)

PN:SO3010579

$50.00 USD
$50.00 USD
Sale Sold out
Shipping calculated at checkout.
Center Wavelength (CWL) // FWHM
Optical Density // Peak Transmission (Tpk)
Dimension

Precision Near-Infrared Bandpass Filter - 815nm

The BP815-35 delivers exceptional precision with its carefully engineered 815nm center wavelength and narrow 35nm full-width half-maximum (FWHM). This professional-grade filter provides superior spectral selectivity for demanding near-infrared applications where precise wavelength control and minimal spectral interference are critical for accurate measurements.

Precision Performance Features:

  • Precise 815nm Center: Optimally positioned for critical NIR applications and biological transparency windows
  • Narrow 35nm Bandwidth: Superior spectral selectivity for high-resolution measurements
  • High Optical Density: Excellent blocking of unwanted wavelengths for clean spectral isolation
  • Premium Coatings: Advanced multi-layer interference coatings for optimal transmission
  • Research Grade Quality: Engineered for demanding laboratory and analytical environments

Specialized Applications:

Ideal for high-precision NIR spectroscopy, advanced biomedical imaging, fluorescence microscopy, and analytical instrumentation requiring exceptional spectral purity. This filter excels in applications where narrow bandwidth is essential, including laser line filtering, specific emission line isolation, and precision optical sensing systems.

Technical Excellence:

The 35nm bandwidth provides exceptional spectral discrimination, making it perfect for applications requiring the isolation of specific spectral features while minimizing interference from adjacent wavelengths. Ideal for research applications where spectral purity is more important than maximum light collection.

Precision-engineered for researchers and professionals who demand the highest level of spectral accuracy.

Transmission & OD Data

The transmission curve is typical. Actual data may vary from lot to lot, you can request the raw Transmission and OD data from us.

Copy the link of the product page and send email to shop@syronoptics.com to get raw data.

Shipment & Delivery

For stocked products, shipment will usually be made within 5 working days after order.

For customized products, shipment will usually be made within 4-8 weeks after order.

Return & Refund

Stocked Product are eligible to return within 7 days after receiving.

A flat rate of 35$ will be charged for returning.

Custom Sizing

Custom sizing is available for dimension under 60x60mm. Without mounting the thickness will generally ranging from 0.5-3mm.

For bigger size, contact shop@syronoptics.com for details.

Optical dicing refers to precision cutting processes used to segment optical materials, particularly those with specialized coatings, into smaller functional components while maintaining their structural and optical integrity. In the context of optical coating flats (flat substrates like glass, fused silica, or semiconductors coated with anti-reflective, dielectric, or other optical layers), dicing ensures these coated substrates meet exact dimensional requirements for applications in photonics, lasers, sensors, and semiconductor devices.

Methods

  • Saw Dicing: Diamond-coated blades for clean cuts with minimal chipping.
  • Laser Dicing: Non-contact ablation for delicate or brittle materials, reducing mechanical stress.
  • Plasma Dicing: Dry etching for ultra-fine features, ideal for advanced semiconductor wafers.

Price

Dicing Service will generally cost from $50 to $125 per piece. Depending on the accuracy and size you are requesting.

Packaging

If you need generic packaging, please leave "Generic" in the note when placing order.

In such case:

  • No Branding information in Packaging Materials
  • All Documentation will be generic
  • We will send image of the parcel to you before fulfilling shipment
  • You can use your document template for the shipment.

Feel free to contact shop@syronoptics.com for details.

Payment

Payment could be done online with Credit Card, Apple Pay, Google Pay, Wechat Pay and Alipay

For amount under $200 you can request to make payment within 7days after receiving the order.

View full details

Fequently Asked Questions

What are the Thickness of the Optical Filters?

For Mounted Optics:

  • 6mm (by Default)
  • 3.5mm (Specified in Order Note)

For Unmounted Optics:

  • 0.5mm
  • 1.1mm
  • 2mm

(most of the unmounted optics are having thickness of 1.1mm ~ 2mm)

What is the difference between mountings?

Unmounted:

  • a bare glass optical filter

Mounted:

  • Smooth Mount for protection of the optics. No thread is there on the mount.

Metric Mount:

  • Start with M as prefix, usually seens as M25.5x0.5mm. Mostly used as camera filters

Imperial Mount (Usually Thorlabs):

  • Start with SM as prefix, usually seen SM1, SM05 etc... Mostly used in Optical system. (You will have a SM external thread to connecting to other objects)

C-Mount:

  • Very frequently used mounting. C-Mount is 1‘’-32TPI. And it is not the same thing as SM1, or M25.5x0.5mm.

Standard Mountings

Camera Mounting List

  • Our filters can be cut to match the mounting on the list. Please contact us for getting quotation.

Need any help?

Other Wavelength

UV Bandpass Filter (100-400nm)

VIS Bandpass Filter (400-800nm)

NIR Bandpass Filter (800-1400nm)