1PCS 2 inch IR UV cut filter UV IR-CUT threaded part M48X0.75
The following describes the basic knowledge of infrared:
[infrared ray]
Infrared is one of the many invisible rays in the sun's rays. The wavelength of infrared
rays in the solar spectrum is greater than that of visible rays, with a wavelength
of 0.75 to 1000 μm. Infrared rays can be divided into three parts, namely near-infrared rays,
which have a wavelength between 0.75 and 1.50 μm; mid-infrared rays, which have a
wavelength between 1.50 and 6.0 μm; and far-infrared rays, which have a
wavelength between 6.0 and 1,000 μm.
According to tests, infrared rays can reach more than 40% in natural light radiation
The CCD or CMOS used in digital cameras can sense infrared rays.
840k series (including spc 900nc) camera uses SONY IC098BQ CCD
The sensitivity curve is as follows:
It can be seen from the figure that the infrared part is still relatively sensitive,
and the pass rate of the 700nm wavelength part is as high as 70%.
It can be seen that it is still quite sensitive to infrared light. Why is the photo taken
by the camera the same as the eye sees?
That’s because the IR cut filter is added to the lens, and red reflections can be seen on the lens.
Packing: 1PCS
Warranty period: 120 day.
On Sep-13-21 at 21:35:30 PDT, seller added the following information: