Pinhole fisheye lens

The invention relates to the technical field of optical imaging, in particular to a pinhole fisheye lens, in particular to a pinhole fisheye lens with the full working view field range of 160 degrees, the receiving aperture is F/4.5, the pinhole fisheye lens is particularly suitable for high-definition images, and the pinhole fisheye lens has the advantages of being high in imaging performance resolution, simple and compact in structure and easy to machine and install. The invention relates to an optical lens, which comprises a first lens with a negative meniscus shape, a second lens with a negative meniscus shape, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with positive focal power, a sixth lens with positive focal power and a seventh lens with positive focal power in sequence from an object space to an image space along an optical axis direction, and is characterized in that the first lens with a negative meniscus shape, the second lens with a negative meni