Products HomeIR Blocking Filter
- High-Performance IR Filter
- Average Optical Density > 6 in Rejection Region
- Average Transmission > 90% in Transmission Region
- Immersed Dielectric Coating on Borofloat® Substrate
TF1
IR Blocking Filter
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| Item # | TF1 |
|---|---|
| Transmission Region | Tavg > 90% from 375 to 650 nm |
| Rejection Region | ODavg > 6 from 700 to 1400 nm |
| Graphs (Click for Details) |  |
| Coating | Immersed Dielectric |
| Surface Quality | 80-50 Scratch-Dig |
| Substrate Material | Borofloat® |
| Diameter | 30.0 mm (1.18") |
| Diameter Tolerance | ±0.1 mm |
| Clear Aperture | Ø27 mm |
| Thickness | 3.3 mm (0.13") |
Features
- 30.0 mm Outer Diameter
- Excellent Suppression in Rejection Region (ODavg > 6)
- Recommended Transmission Direction Indicated by Caret on Edge
Thorlabs' IR Blocking Filter is a high-performance filter that is useful for blocking NIR wavelengths. This filter transmits light from 375 - 650 nm and blocks light from 700 - 1400 nm. It offers an average optical density (OD) of 6 in the rejection region and an average of greater than 90% transmission in the transmission region. The filter features a durable immersed dielectric coating on a Borofloat® substrate and can be mounted in one of our internally threaded SM30 lens tubes or optic mounts.
The TF1 filter is identical to the one included in the LAURE1 Cerna trinoculars and can be installed before the eyepieces in the LAURE2 trinoculars using an SM30RR retaining ring.
Note: Borofloat® is a registered trademark by a company of the Schott group.
| Posted Comments: | |
user
(posted 2023-10-13 09:11:42.597) Is there any damage threshold data for this filter, please? Thanks! jpolaris
(posted 2023-10-20 01:45:42.0) Thank you for contacting Thorlabs. At this moment we do not have extensive CW and pulsed LIDT data for TF1. However, TF1 has been measured to have an LIDT > 10 J/cm^2 for nanosecond pulses in the visible to NIR. 羿轩 李
(posted 2023-03-09 18:55:09.107) Hello, can you provide the film data of this IR-cut filter? jgreschler
(posted 2023-03-09 04:10:32.0) Thank you for reaching out to Thorlabs. Additional specs and test data can be requested by contacting techsupport@thorlabs.com. I have reached out to you directly to discuss this request. user
(posted 2022-01-17 05:37:16.13) Hi,
is there any filter that passes from 200nm to 700nm(blocking IR and passing UV+VL)? YLohia
(posted 2022-01-19 08:37:10.0) Hello, thank you for contacting Thorlabs. Unfortunately, we do not offer such a filter at the moment. |
IR Blocking Filter