Witness Samples

Rochester, NY (90 employees)
Custom Manufacturer
Custom manufacturer of precision flat-surfaced, parallel, and wedged optics specializing in double-sided polishing for transmitted wavefront and parallelism. Products include optical and IR windows, glass wafers, color glass filters, mirrors, wedges, plate beamsplitters, and witness samples. ITAR registered, ISO 9001:2015 certified.

Batesville, AR (110 employees)
Custom Manufacturer
LaCroix Precision Optics has been manufacturing custom precision optics since 1947. Capabilities include spherical, aspherical, and flat optics with an extensive in-house coating department. ISO 9001:2015, and ITAR registered and compliant.

Rancho Santa Margarita, CA
Custom Manufacturer
Precision optical glass: strip, blanks, pressings, polished balls, near-UV transmitting i-Line glass, ceramic substrates, CaF2, UV/IR materials, quartz, fused silica (standard/excimer grade), Nanoceram. Ohara CCZ ultralow expansion (excellent CTE uniformity, blank form, to 1.8 m diam). Double-side polished substrates (low surface roughness, excellent flatness).

Branchburg, NJ
Custom Manufacturer
Manufactures precision optical glasses: strip/slab, blanks, fine gobs, polished ball lenses, near-UV transmitting i-Line glass, ceramic substrates, CaF2, UV/IR materials, quartz, fused silica (std./excimer grade). Ohara CCZ ultralow expansion (excellent CTE; large size). Nanoceram. Double-side polished substrates (low surface roughness, excellent flatness).

Shirley, MA (30 employees)
Stock Manufacturer • Custom Manufacturer
AS9100/ISO 9001 manufacturer of substrates, wafers, flat optics, precision shims/spacers, 0.127-mm sq to 450-mm diameter. Precision lapping, polishing, dicing, 5-axis CNC machining, small diameter core drilling, hole drilling. Ultrathin 10-20 microns, ultraflat, tight tolerances. Fused silica, glass, sapphire, ceramics, metals. Large inventory.

Bozeman, MT (50 employees)
Stock Manufacturer • Custom Manufacturer
Optical silicon and germanium crystal growth; ingots up to 17 in. diameter with virtually any orientation, optical transmission, and electrical resistivity. Infrared optics, thin-film coating sources, and custom machined parts to precise tolerances. Polished blanks, windows, and spherical lenses are manufactured for defense and commercial applications.