초록 ▼

An uneven surface data detection apparatus for detecting an uneven surface, such as a human finger, having projected portions and recessed portions. A transparent base having upper and lower surfaces and an upper surface defining an uneven surface contact portion is provided, and a light is incident

An uneven surface data detection apparatus for detecting an uneven surface, such as a human finger, having projected portions and recessed portions. A transparent base having upper and lower surfaces and an upper surface defining an uneven surface contact portion is provided, and a light is incident on the uneven surface so that the light derived from the recess portions enters to the transparent base and comes out thereof. However, a part of the light derived from the projected portions is totally reflected at least one time by the lower opposite surface and focussing lens is integrally formed on the transparent base so that the totally reflected light is drawn out of transparent base and enters to an image sensor.

대표청구항 ▼

An uneven surface data detection apparatus for detecting an uneven surface having projected portions and recessed portions, comprising: a transparent base having first and second surfaces, at least a part of said first surface defining an uneven surface contact portion; a light source for illuminati

An uneven surface data detection apparatus for detecting an uneven surface having projected portions and recessed portions, comprising: a transparent base having first and second surfaces, at least a part of said first surface defining an uneven surface contact portion; a light source for illuminating said uneven surface on said uneven surface contact portion, said light source simultaneously illuminating said projected portions and recessed portions of said uneven surface, so that the light derived from the recessed portions enters to said transparent base and comes out thereof and, at least a part of the light derived from the projected portions is totally reflected at least one time by the second surface opposite to said first surface; a focussing lens integrally formed on or integrally adhered to said transparent base, said focussing lens being located at a position for drawing said totally reflected light out of said transparent base; and an image sensor arranged outside said transparent base for detecting an image of said uneven surface including said projected and recessed portions.