There are many differences between a two way mirror and beamsplitter glass. Reflection, transmission, and clarity.
Teleprompter Mirror Order Optical Beamsplitter Glass
Two Way Mirror or Teleprompter Mirror - Two Way Mirrors
Mirror - Wikipedia
Teleprompter Mirror vs 2-Way Mirror
Beamsplitter Guide
Schematic of the SP-CUP system. BS, beamsplitter; L1a-L4b, Lenses
Lasers and Beamsplitter Glass - Stereoscopic Mirror
Teleprompter Mirror (@PrompterMirror) / X
Stereoscopic Mirror, Optical Grade Beamsplitter
Two Way Mirrors and Beamsplitter Glass - Stereoscopic Mirror
Teleprompter Mirror Optical Beamsplitter Pricing Ordering, 55% OFF
Glass Two Way Mirror, In Stock, Custom Sizes
Teleprompter Mirror Order Optical Beamsplitter Glass
Two Way Mirror Manufacturer of Optical Glass & Acrylic
a) 2D sketch illustrating how the beamsplitter setup projects