Abstract: A fingerprint detection apparatus for obtaining an image of a fingerprint of a finger by using a light source for emitting a light to the finger and an image obtaining part for outputting electric signals in correspondence with received light is disclosed. The fingerprint detection apparatus includes a system controller for determining whether the finger is in contact with or in the vicinity of the image obtaining part by comparing a threshold with a difference between a value of the electric signal when the light source is lit and a value of the electric signal when the light source is not lit.

Abstract: An image detection apparatus includes an interposer, an illumination light emitting element mounted on the interposer for emitting a light toward a surface of a finger tip, an optical sensor chip mounted on the interposer, the optical sensor chip including an alignment of light receiving elements, a light guide member including a bundle of optical fiber parts, the light guide member being mounted on the optical sensor chip, the light guide member including a contact surface to which the surface of the finger tip is contacted, the contact surface being situated opposite from a surface to which the optical sensor chip is mounted, and a synthetic resin mold part being integrally formed with the interposer, the synthetic resin mold part covering the illumination light emitting element and the optical sensor chip and surrounding the light guide member.

Abstract: A fingerprint detection apparatus for obtaining an image of a fingerprint of a finger by using a light source for emitting a light to the finger and an image obtaining part for outputting electric signals in correspondence with received light is disclosed. The fingerprint detection apparatus includes a system controller for determining whether the finger is in contact with or in the vicinity of the image obtaining part by comparing a threshold with a difference between a value of the electric signal when the light source is lit and a value of the electric signal when the light source is not lit.

Abstract: An image detection apparatus includes an interposer, an illumination light emitting element mounted on the interposer for emitting a light toward a surface of a finger tip, an optical sensor chip mounted on the interposer, the optical sensor chip including an alignment of light receiving elements, a light guide member including a bundle of optical fiber parts, the light guide member being mounted on the optical sensor chip, the light guide member including a contact surface to which the surface of the finger tip is contacted, the contact surface being situated opposite from a surface to which the optical sensor chip is mounted, and a synthetic resin mold part being integrally formed with the interposer, the synthetic resin mold part covering the illumination light emitting element and the optical sensor chip and surrounding the light guide member.