845nm CWL, OD2@200~1100nm, FWHM=20nm, Bandpass Filter
845nm CWL, OD2@200~1100nm, FWHM=20nm, Bandpass Filter
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Full Width Half Maximum (nm): 20
Optical Density (OD): OD2@200~1100nm
Peak Transmission (%): 80
Angle Of Incidence (°): 0
SKU: BP845CWL20T80OD2@200~1100nm
*For other Filter Size and Mounting Options, Please contact us.
*Transmission Curve are typical, actual data may vary from lot to lot.
Shipping & Leadtime
Shipping & Leadtime
Standard shipment will be $35 per order. Free shipping for order over $400.
After order confirmation, it will usually take 2-14 days before we can make shipment.
Mounting
Mounting
Filter Ring is available for mounting. The ring will be slightly bigger than the filter itself.
For example a dia25mm ring can hold filter from dia22mm to dia24.5mm.
Email us for detail mounting options.
Return
Return
You will have a 14 days window for requesting return after you received the item.
*There will be a flat rate of $35 for return processing.
Payment Option
Payment Option
We accept payment with below method
- Google Pay
- Apple Pay
- Visa
- Master
- JCB
- American Express
For organization purchase under $100. The order is eligible for Afterpay. (payment within 7 days after received)
- Purchase Order is required from your organization
For purchase amount above $100. You need to make payment in advance or request for a flexible payment terms.
Request for Raw Data
Request for Raw Data
Send email to info@syronoptics.com for request raw data on this item.
SKU or product page need to be referred in the email.
It will usually take 1-4 days to redo the testing. (Due to the queue of testing)
Specifications of Bandpass Filter
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Center Wavelength (CWL)
The wavelength mid-point of transmission range.It is usually measured in nanometers (nm) and it indicates the color of the light that passes through the filter.
- Typical CWL in UV Range: 250 - 390nm
- Typical CWL in VIS Range: 410-700nm
- Typical CWL in NIR Range: 800 - 1550nm
-
Transmission (Tmax or Tmin)
The maximum (or minimum) transmission value within the transmission band. It depends on the coating quality, substrate material, and angle of incidence.
-
Blocking Region
The blocking region for a bandpass filter is the range of wavelengths that the filter blocks or attenuates.It is the opposite of the passband, which is the range of wavelengths that the filter transmits.
-
FWHM
FWHM stands for full width at half maximum, which is a measure of how wide the transmission band of a filter is. For example, a FWHM of 10 nm means that the filter transmits wavelengths within 5 nm on both sides of its center wavelength at half of its peak transmission value
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Optical density (OD)
The measure of how much light is blocked by the filter outside the transmission band. It is expressed as a logarithmic ratio of incident and transmitted power. A higher optical density means a deeper blocking.
Notes:
- Soft Coating can reach OD2-OD4
- Hard Coating can reach OD4-OD6
- Stacking Multiple OD6 Can reach OD8 or Higher
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Angle of Incidence (AOI)
Bandpass Filters are very sensitive to Angle of Incidence, usually the AOI is 0 deg. for bandpass filter. Using different AOI may result in very different spectral performance.
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Bandpass Filter Product List
-
CWL < 200nm
Product List -
CWL > 1100nm
Product List