# US 10,121,051 B2 · Optical apparatus and a method for identifying an object > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,051 B2 - Document ID: US10121051B2 - Status: Granted - Kind: B2 - Application number: 15/067,198 - Filed: 2016-03-11 - Published: 2017-04-20 - Granted: 2018-11-06 - Earliest claimed: 2015-10-16 - Assignees: Novatek Microelectronics Corp. - Applicants: Novatek Microelectronics Corp. - Inventors: I-Hsiu Chen; Li-Yuan Chang - Web page: https://patentgrep.com/patent/US10121051B2 ## CPC - G06V 40/1324: {by using geometrical optics, e.g. using prisms (G06V40/1312 takes precedence)} - G06V 10/993: {Evaluation of the quality of the acquired pattern} - G06V 40/1312: {direct reading, e.g. contactless acquisition} - G06V 40/1376: {Matching features related to ridge properties or fingerprint texture} - G06V 40/1341: {Sensing with light passing through the finger} - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING ## Abstract An optical apparatus adapted to contact an object is provided. The optical apparatus includes an optical device and a processing circuit. The optical device includes a reflection structure and a transmission structure. The optical device senses light signals of the object via the reflection structure and the transmission structure. The processing circuit is electrically connected to the optical device. The processing circuit is configured to identify the object according to the light signals. In addition, a method for identifying an object is also provided. ## Claims ### Claim 1 An optical apparatus, adapted to contact an object, the optical apparatus comprising: an optical device, comprising a reflection structure and a transmission structure, wherein the optical device senses light signals of the object via the reflection structure and the transmission structure, the light signals comprise a first light signal and a second light signal, the first light signal transmits in the reflection structure and is reflected by the object, and the second light signal transmits in the transmission structure and propagates inside the object; and a processing circuit, electrically connected to the optical device, and configured to identify a fingerprint of the object according to the light signals. ### Claim 2 (depends on 1) The optical apparatus according to claim 1, wherein the optical device further comprises an isolation structure, configured to isolate the first light signal from the second light signal. ### Claim 3 (depends on 1) The optical apparatus according to claim 1, wherein a wavelength of the first light signal is different from a wavelength of the second light signal. ### Claim 4 (depends on 1) The optical apparatus according to claim 1, wherein the optical device senses the first light signal and the second light signal during different exposure periods. ### Claim 5 (depends on 1) The optical apparatus according to claim 1, wherein the second light signal comprises a fingerprint identification information, and the processing circuit identifies the fingerprint of the object according to the fingerprint identification information. ### Claim 6 (depends on 1) The optical apparatus according to claim 1, wherein a first image and a second image are respectively generated according to the first light signal and the second light signal. ### Claim 7 (depends on 6) The optical apparatus according to claim 6, wherein the optical device further senses an environment light signal, a third image is generated according to the environment light signal, and the processing circuit reduces an environment light of the first image and the second image according to the third image. ### Claim 8 (depends on 6) The optical apparatus according to claim 6, wherein the processing circuit respectively compares the first image and the second image to at least one reference image to identify the object. ### Claim 9 (depends on 1) The optical apparatus according to claim 1, wherein the processing circuit determines whether the first image and the second image have opposite tones according to image brightness. ### Claim 10 A method for identifying an object, adapted to an optical apparatus, and comprising: sensing light signals of the object via a reflection structure and a transmission structure, wherein the optical apparatus comprises the reflection structure and the transmission structure, the light signals comprise a first light signal and a second light signal, the first light signal transmits in the reflection structure and is reflected by the object, and the second light signal transmits in the transmission structure and propagates inside the object; and identifying a fingerprint of the object according to the light signals. ### Claim 11 (depends on 10) The method for identifying the object according to claim 10, wherein in the step of sensing light signals of the object via the reflection structure and the transmission structure, the first light signal and the second light signal are sensed during different exposure periods. ### Claim 12 (depends on 10) The method for identifying the object according to claim 10, wherein the second light signal comprises a fingerprint identification information, and the step of identifying the fingerprint of the object according to the light signals comprises: identifying the fingerprint of the object according to the fingerprint identification information. ### Claim 13 (depends on 10) The method for identifying the object according to claim 10, further comprising: respectively generating a first image and a second image according to the first light signal and the second light signal. ### Claim 14 (depends on 13) The method for identifying the object according to claim 13, further comprising: sensing an environment light signal, and generating a third image according to the environment light signal; and reducing an environment light of the first image and the second image according to the third image. ### Claim 15 (depends on 13) The method for identifying the object according to claim 13, further comprising: respectively comparing the first image and the second image to at least one reference image to identify the object. ### Claim 16 (depends on 10) The method for identifying the object according to claim 10, further comprising: determining whether the first image and the second image have opposite tones according to image brightness. ### Claim 17 (depends on 10) The method for identifying the object according to claim 10, wherein the optical apparatus further comprises an isolation structure, configured to isolate the first light signal from the second light signal. ### Claim 18 (depends on 10) The method for identifying the object according to claim 10, wherein a wavelength of the first light signal is different from a wavelength of the second light signal.