Overview:

Dichroic Film Sheet Polarizer featuring a dichroic film sheet is epoxied between two protective glass plates. When a natural beam travels through the dichroic film sheet, the rejected polarization is highly absorbed while the transmitted polarization transmits with a weak absorption, making them to be used converting randomly polarized beam into linearly polarized beam.

Compared to polarizing prisms, these dichroic film sheet polarizers offer much bigger size and acceptable angle>20deg.

These 400-700nm dichroic film sheet polarizers provide much higher extinction ratio 1000:1 and acceptable angle>20 deg than polarizing plate beamsplitters at the same wavelength range except the fact that they are limit to use in low-power applications.

General Specifications of Dichroic Film Sheet Polarizer:

Substrate Material	BK7 or B270
Dimension Tolerance	+0/-0.2mm
Thickness	around 2.5mm
Surface Quality	60/40 scratch and dig
Clear Aperture	>90%
Acceptable Angle	>20deg
Working Wavelength	400-700nm
Extinction Ratio	>1000:1
Single Transmission for Parallel Polarized Beam	>70%@632.8nm
Coating	No
Damage Threshold	>10W/cm2 Continuous Pass >1W/cm2 Continuous Block

Standard Products of Dichroic Film Sheet Polarizer:

Coating Graphs of Dichroic Film Sheet Polarizer: