Design and implementation of a high-performance panoramic annular lens
Qing Zhou, Yuhan Tian, Junhua Wang, Min Xu
Abstract
In this work, a high-performance panoramic annular lens system designed with a point-by-point method and variable parameter optimization strategies is proposed. Due to the optimization and design, the system maintains a balance among characteristic parameters and can achieve a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>360</mml:mn> </mml:mrow> <mml:mo>∘</mml:mo> </mml:msup> <mml:mo>×</mml:mo> <mml:mo stretchy="false">(</mml:mo> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>40</mml:mn> </mml:mrow> <mml:mo>∘</mml:mo> </mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>−</mml:mo> </mml:mrow> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>95</mml:mn> </mml:mrow> <mml:mo>∘</mml:mo> </mml:msup> <mml:mo stretchy="false">)</mml:mo> </mml:math> field of view with a 4.34 mm focal length, an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>f</mml:mi> </mml:mrow> </mml:math> -number of 4.5, and an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mtext>F</mml:mtext> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>−</mml:mo> </mml:mrow> <mml:mi>θ</mml:mi> </mml:math> distortion of less than 0.5%. Experimental results verify the parameters and demonstrate that the distortion is less than 0.8%, except in some areas with mechanical damage on the ogive surface.