Polished optical glass IR filters with hydrophobic Anti-Reflective coated surfaces. All filters are coated on both sides. Made to fit large 100x100mm filter mounts.
- 590nm Infrared
- 665nm Infrared
- 720nm Infrared
- 850nm Infrared
- Blue IR
- IR/UV Cut Hot Mirror
At Kolari, we build our filters to last and have complete confidence in their performance. You will too with our lifetime guarantee against defects. If you find something wrong with your filter, at any time, write us at email@example.com. Visit our FAQ section for more information.
Uncoated glass has a reflection of around 7.7% at all wavelengths (about 4% when the light enters the glass, and another 4% when the light exits the glass), and we found that these reflections off the sensor filter was bouncing off the glass and reflecting back from the lens housing and aperture blades to contributing to the hotspots. We developed an anti-reflective coating that is centered around the IR wavelengths that cause hotspots, and reduced the ~7.7% reflection down to <0.4% on average over the IR band, compared to our competitors coating which reduces <1.0%. Below, scan data from our sensor filter coating compared to uncoated glass.
Lens Filter AR Coating
We also now offer our AR coatings on our IR filters and hot mirror filters. The AR coating reduces increases transmission and reduces reflections and ghosting. Example below of one example of a filter reflection artifact. Left, shot through an uncoated IR filter, right, shot through AR coated IR filter. Please note, the lens filter AR coatings do not have an effect on hotspots.
Do you accept international orders?
Absolutely! For accurate shipping costs, please enter your complete shipping address during the checkout process. Some locations may be subject to a remote area surcharge via FedEx Express. The system will not automatically calculate this surcharge. Please check the following link if your city/zip code is considered a remote area: https://www.fedex.com/content/dam/fedex/us-united-states/services/Zipcodes_OPA_ODA.pdf
If you place an order and your city/zip code is on this list, we’ll reach out to you via email to collect the surcharge.
***We legally can not declare lower values for customs and duties. We ship all of our international orders from the United States. Please note that we do not collect taxes, duties, or VAT. International customers are responsible for all duties, taxes, and VAT that may be charged by their respective local customs office. You may also be subject to a brokerage charge when you choose FedEx, UPS, or DHL shipping options.***
Lens filters may be returned for a store credit minus original shipping within thirty (30) days as long as they are in mint condition. 20% Restocking fee will apply to all filter returns. Buyer pays return shipping. Refund does not include original shipping charge. We are able to waive this fee if the return is processed as a store credit or exchange.