An ultralens realizing mid-infrared cross-band super wideband achromatism
CN117872518BActive Publication Date: 2026-08-28JIAXING RES INST ZHEJIANG UNIV
Patent Information
- Application Number
- CN202311859440.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-30
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2043-12-30
AI Technical Summary
Technical Problem
色差会导致不同波长的光线在透镜中聚焦点位置不同，从而造成图像模糊和失真
Benefits of technology
[0016]本发明公开的一种实现中远红外跨波段超宽带消色差的超透镜，利用透镜聚焦的色散公式，将两个不同波段的消色差超透镜组合在一起，实现了中远红外跨波段宽带消色差超透镜的设计。与传统的折射光学元件相比，这种新型的微纳结构组成的超透镜具有极大的优势，具有更轻更薄的尺寸、易于片上集成、可共形设计等等。本发明能够有效消除中远红外光学系统中的色差问题，提高成像质量和清晰度能够有效消除中远红外光学系统中的色差问题，提高成像质量和清晰度。与单波长的超透镜相比，本发明能在超宽波段范围内实现图像聚焦，可以使超透镜在多种光学应用中广泛使用，如相机镜头、显微镜、激光系统，要比单波长的超透镜更具有适用性。由于硅材料具有较高的折射率和成熟的制造技术，本发明使用全硅的结构设计做到了结构简单，便于制备，在实现中远红外成像系统小型化、集成化中有潜在应用价值。
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Abstract
The application discloses an ultralens for realizing mid-far infrared cross-waveband super wideband achromatism, and an imaging device comprises a Si substrate and a subwavelength unit structure on Si nanocolumns arranged on the Si substrate. The application realizes achromatic focusing effect of the ultralens device by using a method combining PB phase and transmission phase to modulate the phase of incident light, and places ultralens structures of two wavebands of mid-far infrared on the same substrate, so that the function of cross-waveband super wideband achromatism is realized on the chip. The application works in the mid-far infrared waveband, has the advantages of simple structure, adjustable size and easy integration, and has potential application value in a mid-far infrared imaging system.
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Citation Information
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