Design of Aspheric Fisheye Lens and Study of Distortion Correction Algorithms

Bao-long, 张宝龙 Zhang; Dan, 李丹 Li; Shaojing, 张少敬 Zhang; Hongrui, 李洪蕊 Li; Jichao, 杨继超 Yang; Jingyun, 王靖云 Wang

doi:10.3788/aos201434.1222001

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We use Equation ( 25) to calculate the curve of the Q with the aspheric coefficient a 2 of each optical surface of lens I, as shown in Figure 7. Since a 2 in the range of [-3, 1] can cover common easily machinable aspheric surface types [15]. The search range of a 2 is [−3, 2] with a step of 0.01, and the field angles in Equation ( 25 Similarly, the curve of the Q with 𝑎 of each optical surface of fisheye lens II is shown in Figure 8.…”

Section: Wave Aberration Distribution Of the Optical Lensmentioning

confidence: 99%

Determination Position and Initial Value of Aspheric Surface for Fisheye Lens Design

Fan,

Yan,

Qiao

et al. 2023

Photonics

View full text Add to dashboard Cite

The aspheric surface is a commonly used method to improve the imaging quality of the fisheye lens, but it is difficult to determine the position and initial value. Based on the wave aberration theory of the plane-symmetric optical system, a method of using an aspheric surface to design a fisheye lens is proposed, which can quickly determine the appropriate aspheric surface to improve the imaging performance. First, the wave aberration of each optical surface of the fisheye lens is calculated and its aberration characteristics are analyzed. Then, a numerical evaluation function is reported based on the aberration distribution of the fisheye lens on the image plane. According to the functional relationship between the evaluation function and the aspheric coefficient, the position of the aspheric surface and the initial value of the aspheric coefficient can be calculated. Finally, the adaptive and normalized real-coded genetic algorithm is used as the evaluation function to optimize the fisheye lens using an aspheric surface. The proposed method can provide an effective solution for designing a fisheye lens using an aspheric surface.

show abstract

Section: Wave Aberration Distribution Of the Optical Lensmentioning

confidence: 99%