Secugen Corporation

Chong Soo Kim

Dong Won Lee

Sang Hoon Shin

Sang Hoon Lee

Methods and apparatuses are provided for reducing fingerprint image distortion. In one embodiment, a fingerprint sensing apparatus comprises an image sensor configured to capture a fingerprint image from a reflected light of the fingerprint, and a mirror and a lens in the light path between the prism and the image sensor to direct the reflected light of the fingerprint image from the prism to the image sensor. The image sensor is configured to provide an image plane, the prism and the mirror are configured to provide a subject plane, where the subject plane is adjusted based on a light path from a prism to the image sensor, and the image plane and the subject plane are extended and are configured to form an intersection, and the lens is adjusted to provide a lens plane that meets the intersection of the image plane and the subject plane.

Method and apparatus for reducing fingerprint image distortion

Methods and apparatuses are provided for a fingerprint sensing apparatus. In one embodiment, a fingerprint sensing apparatus comprises a light source configured to produce an emitted light to illuminate a fingerprint of a user, a light modifier configured to illuminate the fingerprint with a substantially uniform light intensity using the emitted light from the light source, where the light modifier includes a curved surface configured to produce a diffused and reflected light based on the emitted light from the light source, a prism configured to direct a reflected light of the fingerprint illuminated by the diffused and reflected light from the light modifier, an image sensor configured to capture a fingerprint image from the reflected light of the fingerprint, and a housing configured to hold the light source, the light modifier, the prism, and the image sensor within the housing.

Growing community of inventors

Gyeonggi-do, South Korea

Chong Soo Kim