Description
Customized Optical Dome Lens 3mm-300mm Optical Glass Ball Dome lens
Specifications
-
Dome Type:— Hemispherical Dome (half-sphere with flat flange or open base — most common)— Concentric / Aplanatic Dome (inner & outer surfaces share same center — zero net optical power for on-axis rays)— Full Spherical Shell (complete sphere with wall thickness — less common, custom)— Flush-Mount / Flanged Dome (with integral mounting lip per drawing)
-
Material Options:— VIS / NIR: N-BK7 (K9), UV Fused Silica (JGS1 — UV-transmitting), Sapphire (high strength, broad band)— UV: CaF₂, MgF₂, Fused Silica— MWIR / LWIR: Si, Ge, ZnS (Cleartran), ZnSe, Chalcogenide Glass (IRG206 etc.)— Broad/Multi-Spectrum: Sapphire (0.15–5 µm), CaF₂ (0.13–10 µm)
-
Outer Diameter (OD): 3 mm – 300 mm (common: Ø12.7 / Ø25.4 / Ø50.8 / Ø75 / Ø100 / Ø150 mm)
-
Wall Thickness (t): 0.5 mm – 20 mm (typical 1.0 / 2.0 / 3.0 / 5.0 mm for small domes; 3–10 mm for large IR seeker domes)— Aplanatic dome: inner radius Ri = Ro − t (concentric)
-
Dome Height / Sag: Per hemisphere (H = Ro) or custom partial dome angle (e.g. 90°, 120° included angle)
-
Diameter / Thickness Tolerance: ±0.05 mm (precision) / +0.0 / −0.1 mm (standard)
-
Surface Quality: 60-40 / 40-20 / 20-10 Scratch-Dig (IR domes often 80-50 relaxed)
-
Surface Irregularity (Spherical Surface): λ/4 or λ/10 @ 632.8 nm (tested on reference sphere)
-
Centration (Concentricity of inner/outer surfaces): ≤ 0.02 mm (typical for aplanatic)
-
Coating Options:— VIS: BBAR 400–700 nm (Ravg < 0.5%)— NIR: BBAR 700–1100 nm or 400–1100 nm (broadband)— IR: BBAR @ 3–5 µm / 8–12 µm / dual-band (Ge/Si domes)— DLC (Diamond-Like Carbon): Protective overcoat for Ge/ZnS IR domes (rain erosion resistant)— Hydrophobic / Oleophobic: Easy-clean top coat for underwater / outdoor use
-
Edge / Flange: Ground edge; integral mounting flange per customer drawing (threaded / bolt pattern / bonded)
