光学ドーム

スーパー半球ドーム

Name: スーパー半球ドーム
Rating: 4.5 (100 reviews)

超半球ドームは、半球の高さを超える球面キャップです。特定の条件下（物点が球の中心にある場合）では、このシステムは球面収差を完全に除去できます。180°を超える限界視野角を実現できます。光は側面から、あるいはわずかに後方から斜めに入射しても、内部センサーで受光できます。ECOPTIKは、半径の55%を超える超球面ドームを製造可能です。

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設計上の課題と主要技術

Aberration Control

Although it has no spherical aberration at the center, practical optical systems (such as internal lens groups) need to compensate for the field curvature and astigmatism it introduces. Co-optimizing the hyperspherical dome as the first element of the entire optical system is crucial.
$Material and Refractive Index Selection$
Material and Refractive Index Selection

The refractive index "n" is a critical parameter. Careful selection of materials with suitable refractive indices is necessary to place the image-side luminous point in a reasonable position and control the ray direction. For infrared applications, commonly used materials include sapphire and ZnS.
Extreme Manufacturing Difficulty

Machining a complete spherical dome exceeding the height of a hemisphere while maintaining extremely high surface accuracy and finish places extremely high demands on the manufacturing process.

サンプル

仕様スーパー半球ドーム

基板材料	K9(CDGM)、サファイア、Si、MgF2、N-BK7、N-BK10、コーニング7980、JGS1、ボロフロート33、ZnSe、ZnSなど	表面品質	60/40、40/20、20/10、10/5
寸法	6mm-350mm	表面フリンジ	10(5)-3(0.5)
厚さ	0.5mm～30mm	コーティング	反射防止（AR）コーティングまたはお客様のご要望に応じて
厚さ	通常±0.1mm、最高±0.02mm	ECOPTIKの年間生産能力	30万個以上

代表的な応用分野

Missile Seekers

This is the most typical application. Used to achieve "over-the-shoulder launch" or omnidirectional attack capabilities, enabling the seeker to see targets to the side, rear, or even behind. It is usually used in conjunction with an infrared imaging system.
Underwater Optical Systems

Provides AUVs/ROVs with a wide-angle field of view exceeding 180°, virtually eliminating blind spots.
All-Sky Imaging Systems

Special lenses used to capture 360°×360° panoramic images; a hyperspherical dome can serve as its front element.
Cutting-Edge Surveillance and Sensing

Used in special situations requiring near-omnidirectional sensing with a single lens.