IdealPhotonics' Hard-Coated Edgepass Filter Kits are a combination of long-pass (LP) or short-pass (SP) filters using a hard-coating process. They achieve efficient separation of specific wavelengths and suppression of background noise through a steep cutoff edge (transition band <5nm).The hard-coating technology achieves a steep cutoff edge (short-pass or long-pass), a high damage threshold, and excellent environmental stability, making them suitable for precise spectral screening under harsh conditions.