Fused silica Flanged Stepped Hyper-Hemispherical Optical Glass Dome
Asin Optics manufactures and customs high-precisionFused silica Flanged Stepped Hyper-Hemispherical Optical Glass Dome for ROV, LiDAR, and subsea applications. Custom stepped dome lenses available in Fused Silica, Sapphire, and optical glass with custom AR coatings.
- A precision stepped structure ensures a watertight and airtight seal.
- An integrated flange design facilitates mechanical fastening.
- We guarantee uniform wall thickness at the flange edges.
- We can manufacture single-step, double-step, and complex, specially shaped flanges according to your drawings.
Fused silica Flanged Stepped Hyper-Hemispherical Optical Glass Dome Description
Our fused silica hyper-hemispherical optical glass dome features a precision-machined stepped or flanged structure at its base. This hyper-hemispherical geometry, combined with an integrated flange, enables an ultra-wide field of view while ensuring a reliable seal via an O-ring. It is ideally suited for demanding environments such as deep-sea operations, underwater imaging, and LiDAR applications.
Key features include:
- The hyper-hemispherical shape provides an unobstructed field of view approaching or exceeding 180°.
- The integrated flange facilitates rapid mounting and clamping to the mechanical housing.
- The flange and spherical dome are formed as a single unit; the stepped design accommodates an O-ring to enhance installation reliability and pressure resistance.
- We offer full customization based on customer specifications, including flange shape, step dimensions, mounting hole locations, spherical radius, overall height, and wall thickness. We can also machine various flange profiles based on CAD drawings.
Fused silica Flanged Hyper-Hemispherical Stepped Optical Glass Dome Detail Display
Fused silica Flanged Hyper-Hemispherical Stepped Optical Glass Dome Custom Capability
| Item | Customization Capability |
| Substrate Material | Fused Silica (JGS1/JGS2/JGS3), Sapphire, N-BK7, Silicon, Zinc Selenide , Zinc Sulfide |
| Processing Diameter | 8 mm to 350+ mm |
| Flange / Step Type | Single-step, double-step, multi-step structures, T-shaped flanges, custom angled flanges |
| Mounting Holes | Through holes, counterbored holes, threaded holes |
| Dimensional Tolerance | ±0.05 mm |
| Surface Quality (S-D) | 60-40, 40-20, down to 20-10 |
| Optical Coatings | UV-IR broadband AR coatings (BBAR) on both surfaces, single-wavelength AR coatings, hydrophobic / anti-fouling coatings, edge metallization |
Fused silica Flanged Hyper-Hemispherical Stepped Optic Dome Applications
High-Pressure Underwater Imaging for Deep-Sea Submersibles
Traditional flat-bottomed hemispherical domes are prone to uneven stress distribution during assembly, which can lead to seal failure in underwater environments. Fused silica hyper-hemispherical stepped domes with flanges avoid this issue; their flanges or stepped sections allow for secure mechanical fastening, effectively preventing high-pressure water ingress.
LiDAR Systems
LiDAR systems require the omnidirectional transmission and reception of laser pulses. A stepped optical dome serves as an external fairing; its flange allows it to be securely mounted to the top of a vehicle, creating a sealed enclosure. This design reduces wind resistance and protects against physical impacts, such as flying debris.
PTZ Optoelectronic Pods
Cameras within optoelectronic pods or high-end gimbal systems require rotation and tilt capabilities. When a stepped or flanged dome is used, it acts as a mechanical alignment reference, automatically aligning the dome’s optical center with the PTZ’s axis of rotation and ensuring consistently clear imagery.
