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In photography and cinematography, a normal lens is a lens that reproduces a field of view that appears "natural" to a human observer. In contrast, depth compression and expansion with shorter or longer focal lengths introduces noticeable, and sometimes disturbing, distortion.
Optical lens, assembling method thereof and camera module
The application discloses an optical lens, an assembling method thereof and a camera module. The assembling method comprises the following steps: (a) allowing an upper lens group, a standard lens group and a lower lens group to be arranged approximately along an optical axis; (b) calibrating the upper lens group, the standard lens group and the lower lens group; (c) allowing a focusing lens group to replace the standard lens group; and (d) assembling the upper lens group, the focusing lens group and the lower lens group to obtain the optical lens. In this way, the optical lens can be calibrated under high threshold performance, so that the optical performance of the optical lens is ensured.
Owner:NINGBO SUNNY OPOTECH CO LTD