The invention belongs to field of lens technology, and particularly relates to a high-definition fish-
eye lens which comprises from the first lens to the sixth lens arranged in order from the object space to the image space. The first lens and the fourth lens are glass lenses while the third, fifth and sixth lens are plastic aspheric lenses. The first lens is a
meniscus lens with negative focal power, the second lens is a biconcave lens with negative focal power or a
meniscus lens with negative focal power, the third lens is a biconcave lens with positive focal power or a
meniscus lens with positive focal power, the fourth lens is a biconcave lens with positive focal power, the fifth lens is a biconcave lens with negative focal power, the sixth lens is a biconcave lens with positive focal power. Compared with
current technology, the high-definition fish-
eye lens is capable of realizing small size and light weight for effective
cost control. The corner relative
illuminance reaches over 65% with the
sound design of lens for guaranteeing the corner
image quality. The high-definition fish-
eye lens is capable of meeting the requirement of resolution day and night with supporting
confocal image of visible light and
infrared. The maintenance of resolution is ensured in the environment with the temperature ranges from -45 to +85 DEG C.