Shooting objective lens optical system is used to interior peeping

The utility model discloses a shooting objective lens optical system is used to interior peeping, it includes the second lens that have negative optical power's first lens, diaphragm and have positive refractive power for instance incline in proper order to incline from the object, its characterized in that satisfies following conditions: FH (L1r1) &lt, 2.8 H (L1r1) IMH&lt, 0.6 TTLf&lt, 4, BFf&gt, 1.5 wherein, f is shooting objective lens optical system is used to interior peeping's a focus, and H (L1r1) the chief ray that the biggest image height corresponds when being normal observation is through the height that face corresponded of the object side of first battery of lens, the biggest image height on the chip photosurface that corresponds when IMH is normal observation, the TTL distance to the chip photosurface that is first lens in the epaxial thing of light side, and BF is the second lens arrived the chip photosurface to the side of the epaxial picture of light distances. The utility model provides a sh