The invention discloses an optical camera which comprises a first lens with negative refraction power, a second lens with positive refraction power, a third lens with refraction power, a fourth lens with refraction power, a fifth lens with negative refraction power and a sixth lens with refraction power in sequence from the object side to the image side along the optical axis of the camera. The object side face of the second lens is a convex face, the image side face of the second lens is a convex face, the position, close to the optical axis, of the object side face of the fifth lens is a convex face, the position, close to the optical axis, of the image side face of the fifth lens is a concave face, the position, outward away from the optical axis, of the concave face of the fifth lens is provided with at least one convex face, the position, close to the optical axis, of the image side face of the sixth lens is a concave face, and the position, away from the optical axis, of the image side face of the sixth lens is provided with at least one inflection point. The optical camera meet the condition that (R51+R52)/(R51-R52) is larger than 1.8 and smaller than 4. By means of the technical scheme, through the reasonable profile structure and proper lens internal distribution, the best optimization is conducted on a system. The large field angle is obtained, the total length of thesystem can be effectively restrained, the current light and portable requirements are met.