CPC G02B 23/243 (2013.01) [A61B 1/00186 (2013.01); G02B 13/003 (2013.01); G02B 9/04 (2013.01)] | 17 Claims |
1. An endoscope lens, from an object side to an image side thereof, the endoscope lens consisting of following components sequentially:
a stop;
a first lens having a concave object side surface and a convex image side surface;
a second lens; and
a filter arranged between the second lens and the image side;
wherein the first lens is a glass or plastic aspheric lens, and the second lens is a glass or plastic aspheric lens;
wherein the endoscope lens meets an expression:
0<(f2/Fno)+f<1;
where f represents an effective focal length of the endoscope lens, and Fno represents an F number of the endoscope lens; and
wherein a field of view of the endoscope lens is greater than or equal to 120°, and an optical total length of the endoscope lens is less than 1.50 mm.
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