| 摘要 |
An optical fingerprint imaging system and an array sensor are provided. The optical fingerprint imaging system includes: a cover plate (203, 303, 403, 506), a backlight source (201,304, 404, 503), an array sensor (202) disposed between the cover plate (203, 303, 403, 506) and the backlight source (201,304, 404, 503), and an optical assembly (204)； the array sensor (202) includes an array of pixels (301, 401, 501) each of which has an opaque region (3052) and a nonopaque region (3051), the opaque region (3052) includes an photosensitive device for converting an input light into electronic signals, and the nonopaque region (3051) is adapted for allowing light from the backlight source (201,304, 404, 503) passing through； and the optical assembly (204) is adapted for partially blocking the light from the cover plate (203, 303, 403, 506) to the photosensitive device, and is configured with at least one light tunnel (302) between the cover plate (203, 303, 403, 506) and each of the photosensitive devices, wherein the light tunnel (302) allows light passing through in a preset range of direction. Accordingly, the contrast of a fingerprint image obtained is enhanced. |
