Name: 반구형 렌즈
Rating: 4.5 (100 reviews)

반구형 렌즈

반구형 렌즈는 일반적으로 완전한 구면 렌즈를 적도면을 따라 절단하여 만듭니다. 따라서 반구형 렌즈는 구면 렌즈의 "반쪽"으로 간주될 수 있습니다. 구면 렌즈의 초점 특성과 평면 기판에 쉽게 장착할 수 있는 장점을 결합하여 정밀 광학 및 광전자 시스템에서 중요한 역할을 합니다.

주요 특징

Materials

Optical glass such as K9, fused silica, sapphire, MgF2, silicon (Si), ZnSe, ZnS, etc. These materials possess high transmittance, low absorption, low scattering, uniform refractive index, and specific dispersion characteristics.
Shape

Precisely hemispherical. The machining precision of the center and radius of curvature of the sphere is extremely high.
Surface Quality

The surface is precision polished to an optical grade of 10-5 to ensure image quality and reduce scattering and aberrations.
Coating

An AR coating is typically applied to the concave surface to maximize the transmittance of specific wavelengths of light (e.g. visible light) and reduce reflection loss.

그림

사양 반구형 렌즈

재료	광학 유리(가시광선 유리, UV 용융 실리카, 실리콘, 사파이어 등)
지름	0.2mm-100mm
직경 공차	+0.0-0.05mm
표면 품질	60/40, 40/20, 20/10
표면 프리거	람다/2~람다/8
코팅	고객 요청에 따라

일반적인 적용 분야

High-efficiency Optical Coupling

Utilizing an extremely short back focal length, the distance to the optical fiber or laser chip is minimized, efficiently focusing or coupling diverging signal light into the transmission fiber.
Beam shaping and illumination

Diffusion of the LED point light source into a uniform surface light source achieves wide-angle uniform illumination. For example, in intraoral scanners, it eliminates reflective interference from tooth surfaces, ensuring the accuracy of 3D modeling.
Specialized Imaging and Detection

As a solid immersion lens or coupling lens, it improves the resolution or signal acquisition efficiency of the imaging system. For example, in terahertz systems, it is used to increase the intensity and bandwidth of the spectral signal.