Plate Beamsplitters


A mirror-type (plate) beamsplitter is an optical window with a semi-transparent mirrored coating to break a beam into two or more separate beams. A beamsplitter will reflect a portion of the incident energy (see reflection %), absorb a relatively small portion, and transmit the remaining energy (see transmission %). Mirror-type beamsplitters have very neutral color characteristics and are often referred to as plate beamsplitters.

Material BK7 Grade A optical glass
Dimension Tolerance +/-0.2mm
Parallelism 30 arc senonds .
Surface Quality 60-40 scratch and dig
Surface Accuracy λ/4@632.8nm per25.4mm
Bevel 0.1mmX45 degree
Trans./ Reflect.





Narrow Band Beamsplitter Plate

Coating (Incidence angle: 45deg)

S1: Single wavelength partial reflectance;

S2: "V" AR Coating

Wavelength(nm) 488, 532, 635, 670, 780, 850, 980, 1064nm

Broadband Beamsplitter Plate

Coating (Incidence angle: 45deg)

S1: Broadband partial reflectance;

S2: Broaband AR Coating

Wavelength(nm) 450-650nm, 650-900nm, 900-1200nm



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