Chongfan Technology
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Non-mechanical beam scanning module
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Product Description
- It is fabricated by cascading a liquid-crystal variable retarder and a liquid-crystal polarization grating, and mounted within a mechanical housing.
- It can be used to achieve a non-mechanical beam-scanning effect with a specific dot-array distribution.
- High efficiency and stability, fast response speed, and high deflection accuracy.
- Operating wavelength: 1550 nm; array size: 4 × 16; large clear aperture.
- Supports flexible customization of parameter specifications.
Chongfan Technology’s solid‑state beam‑steering module (SBSM) is primarily composed of a liquid‑crystal variable retarder and a cascaded liquid‑crystal polarization grating. By applying externally adjustable voltages to the liquid‑crystal variable retarder, the retardance can be dynamically tuned in real time, enabling the incident light to be converted into either left‑handed or right‑handed circularly polarized light. When such circularly polarized beams pass through the liquid‑crystal polarization grating, their polarization‑dependent birefringence causes them to be deflected into distinct directions. By cascading multiple liquid‑crystal variable retarders and polarization gratings, the system can achieve point‑array scanning of the beam over a specified angular range in one‑ or two‑dimensional space. Compared with mechanical beam‑scanning technologies, this non‑mechanical beam‑steering module offers advantages such as compact size, fast response, and high stability. Chongfan Technology provides a standard SBSM operating at a wavelength of 1550 nm with a 4×16 point array, while also supporting flexible customization of parameter specifications. For further details, please contact LBTEK technical support.
- Operating wavelength: 1550 nm
- Dot matrix size: 4×16
- Meets an effective aperture > Ø80 mm
- Response time less than 31 ms at 25 °C
Chongfan Technology’s non-mechanical beam‑scanning module consists of seven liquid‑crystal variable retarders and six liquid‑crystal polarization gratings arranged in a cascaded stack. Two of the polarization gratings are oriented with their grating lines perpendicular to those of the other four, enabling control of the incident beam’s deflection in both the vertical and horizontal planes. The effective clear aperture exceeds Ø80 mm, the overall scanning efficiency is greater than 45%, and at 25 °C, the response time can be as low as less than 31 ms.
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