Name: ハーフボールレンズ
Rating: 4.5 (100 reviews)

ハーフボールレンズ

ハーフボールレンズは通常、球面レンズを赤道面に沿って切断して作られるため、球面レンズの「半分」と考えることができます。球面レンズの集光特性と平面基板への取り付けの容易さを兼ね備えており、精密光学および光電子システムにおいて重要な役割を果たします。

主な機能

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.

描画

仕様ハーフボールレンズ

材料	光学ガラス（VISガラス、UV溶融石英、シリコン、サファイアなど）
直径	0.2mm～100mm
直径公差	+0.0～0.05mm
表面品質	60/40、40/20、20/10
表面摩擦	ラムダ/2～ラムダ/8
コーティング	お客様のご要望に応じて

代表的な応用分野

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.