Longpass Filters-

 RG9 Schott glass, 12.0mm dia. x 3.0mm thk.

(2950 in stock - original packaging, priced to sell!) CALL

Lenses-

Plano-Convex Lenses, BK7, 50mm dia. x 75mm FL

(900 in stock - original packaging, priced to sell!) CALL

Fresnel Lenses-

5" x 5" x5" FL

11" x 11" x 7" FL

New in original packages. Large quantities available. Make offer!!