Hot and cold dichroic filter

Dichroic mirror, beam splitter, combiner, dichroic filter and dichroic beam splitter provide different beam splitting ratios for incident light in different bands. Dichroic beam splitter can be used to combine or separate laser beams of different colors.

The thermal mirror provided by Borisun Optics is very suitable for preventing unnecessary heat from reaching the sensitive area of your device. In applications where heat accumulation needs to be considered, a thermal mirror with an incident angle of 0 or 45 degrees provides protection by reflecting infrared light back along the incident optical path or at 90 degrees. These thermal mirrors can also be used as dichroic mirrors with low-pass regions.

The cold mirror of Borisun Optics is used to transmit infrared energy and reflect visible light from your device at 90 degrees. These cold mirrors are ideal for projection applications and as dichroic mirrors with high pass regions.

high reflective mirror
Technical parameters
Items Parameters
Product index customizable
Substrate quartz, K9 and other optical glass
Luminous aperture > 90%
Parallelism < 30″
Surface shape λ/ 4 or λ/ 10 @ 632.8nm per 25mm
Coating one side is coated with medium beam splitting film, and the other side with antireflection film
Incident angle 45°
Surface quality 40-20
Damage threshold > 5J / cm2, 20ns, 20Hz, @ 1064nm
spectral curve

In addition, We can customize the optical filters according to customer requirements or drawings.

For details, please consult:

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