Patent ID: 11900717
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A method for recognizing a fingerprint by an electronic device comprising:
an image sensor;
a first reflective member configured to reflect a first light to the image sensor; and
a second reflective member configured to reflect a second light to the image sensor, the second reflective member comprising a dichroic material that transmits a first light beam having a wavelength in a first range and reflects a second light beam having a wavelength in a second range different from the first range,
wherein the method comprises:
recognizing a fingerprint based on the first light detected through the image sensor;
recognizing the fingerprint, based on light having the wavelength in the first range, among the second light detected through the image sensor; and
calculating an intensity of an external light source, based on light having the wavelength in the second range, among the second light detected through the image sensor.