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This filter is NOS from an instrument manufacturer. The filter separates a band of Red (615-660) by reflecting it at right angles to the incidence light, while transmitting nearly all of the Long Red and Infra Red. The filter makes a very good color separator of Red and InfraRed emission. filter specifications follow: @ 45 degrees in random polarization; Reflection band 615 to 660 with average of 95%, Transmission band 680 to 800+ nm with an average of 90%, Size 25x36 mm, Substate material is fused silica. Original cost $150 (Optical filter dichroic 670DRLP 25X36MM beamsplitter@45 was posted and is owned by: Margery Howard) |
margery.howard@chicagopartsnetwork.com (Margery Howard) for more information.
