Four-Piece All-Aspheric Adapter Fisheye Lens

摘要

A four-piece all-aspheric adapter fisheye lens includes a negative meniscus lens, a biconcave lens, a positive meniscus lens, and a biconvex lens. The biconcave lens is between the negative meniscus lens and the positive meniscus lens; the positive meniscus lens is between the biconcave lens and the biconvex lens. The negative meniscus lens, the biconcave lens, the positive meniscus lens, and the biconvex lens are coaxial and arranged with an exit pupil to cooperatively generate an image with a camera lens that has greater field of view than the camera lens alone when the exit pupil is coplanar and coaxial with an entrance pupil of the camera lens. Each of the negative meniscus lens, the biconcave lens, the positive meniscus lens, and the biconvex lens has an aspheric object-side surface and an aspheric image-side surface.

主权项

1. A four-piece all-aspheric adapter fisheye (FPAAAF) lens, comprising:
a negative meniscus lens, a biconcave lens, a positive meniscus lens, and a biconvex lens; the biconcave lens being between the negative meniscus lens and the positive meniscus lens; the positive meniscus lens being between the biconcave lens and the biconvex lens; the negative meniscus lens, the biconcave lens, the positive meniscus lens, and the biconvex lens being coaxial and arranged with an exit pupil to cooperatively generate an image with a camera lens that has greater field of view than the camera lens alone when the exit pupil is coplanar and coaxial with an entrance pupil of the camera lens; and each of the negative meniscus lens, the biconcave lens, the positive meniscus lens, and the biconvex lens having an aspheric object-side surface and an aspheric image-side surface;