Wide range underwater optical communication optical receiving antenna having uniform light

Abstract

The invention discloses a wide range underwater optical communication optical receiving antenna having uniform light. The antenna includes a Fresnel lens, a plano-convex fly eye lens, a complex paraboloid condenser, a semispherical lens and a detector. The semispherical lens is arranged at half position of the Fresnel lens. A small end of the complex paraboloid condenser closely attaches a convexsurface of the semispherical lens. The detector attaches closely to the rear surface of the semispherical lens. According to the invention, the Fresnel lens is adopted so as to increase the condensation. The plano-convex fly eye lens can increase uniformity of light spots. A big end of a CPC enlarges receiving caliber, such that more light energy enters the detector. In addition, a bigger receiving caliber makes the entire optical system easy and simple to perform adjustment, and also has the characteristics of lower requirements for ambient environment and strong anti-interference. The semispherical lens is intended for increasing the angle of visual field of the entire optical system, so that the detector is insensitive to the angles of a light source and even a small-sized detector canreceive light energy from a wider range. The antenna has the characteristics of light weight, small size, high reliability, and higher signal-to-noise ratio of a receiving system.

Description

technical field [0001] The invention belongs to the technical field of underwater optical communication, and relates to a wide-range underwater optical communication optical receiving antenna with uniform light. Background technique [0002] With the development of laser technology, underwater optical communication technology has become a research hotspot. Firstly, the frequency of light waves is high, the carrying capacity of light information is strong, and it can transmit large-capacity underwater data; secondly, it is less affected by environmental factors and has strong anti-interference ability; finally, due to the good directionality of light waves, it will Timely feedback to the user, the light wave has good confidentiality and high security. Therefore, underwater optical communication technology plays an important role in underwater communication, marine environment detection, underwater drones and many other aspects. [0003] The optical receiving antenna is an i...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wide-range underwater optical communication optical receiving antenna with uniform light, which solves the problem of small field of view when the optical receiving antenna composed of a traditional refractive index lens has a high light-gathering efficiency and the detector is aligned with the receiving antenna. Difficult, weak anti-interference ability, difficult to ensure good focusing effect when the field of view is large

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