# US 12,216,063 B2 · Electronic device which can determine a dirtiness level > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,216,063 B2 - Document ID: US12216063B2 - Status: Granted - Kind: B2 - Application number: 17/242,296 - Filed: 2021-04-27 - Published: 2021-08-12 - Granted: 2025-02-04 - Earliest claimed: 2019-05-28 - Assignees: Pixart Imaging Inc. - Applicants: PixArt Imaging Inc. - Inventors: Tsung-Fa Wang; Hung-Ching Lai; Guo-Zhen Wang - Web page: https://patentgrep.com/patent/US12216063B2 ## CPC - G01N 21/94: Investigating contamination, e.g. dust (G01N21/85 takes precedence) - G01N 21/8851: {Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges (G01N21/8806 and G01N21/93 - G01N21/95692 take precedence; optical measurement of dimensions G01B11/00; optical scanning G02B26/10; image transformation G06T3/00; computerised image enhancement G06T5/00; image processing per se for flaw detection G06T7/0002)} - G01N 2021/8887: {based on image processing techniques} - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract An electronic device, comprising: a first light source, configured to emit first light; a second light source, configured to emit second light; a first optical sensor, configured to sense first optical data generated based on reflected light of the first light; a light guiding device, configured to receive the second light; and a second optical sensor, configured to sense second optical data generated based on the second light emitted by the light guiding device. The first optical sensor and the second optical sensor can be integrated to a single optical sensor. ## Claims ### Claim 1 An electronic device, comprising: a first light source, configured to emit first light; an optical component, configured to receive the first light from the first light source, and configured to pass partial of the first light; a second light source, configured to emit second light; a first optical sensor, configured to sense first optical data generated based on reflected light of the first light, wherein the reflected light of the first light is reflected by the optical component and transmitted to the first optical sensor; a light guiding device, configured to receive the second light; and a second optical sensor, configured to sense second optical data generated based on the second light emitted by the light guiding device. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the second optical data is for determining a dirtiness level of the light guiding device. ### Claim 3 (depends on 2) The electronic device of claim 2, further comprising a processing circuit, wherein the processing circuit determines the dirtiness level is higher than a dirtiness threshold if a brightness level of the second optical data is lower than a brightness threshold. ### Claim 4 (depends on 2) The electronic device of claim 2, further comprising a processing circuit, wherein the processing circuit determines the dirtiness level is higher than a dirtiness threshold if a brightness level of the second optical data is higher than a brightness threshold. ### Claim 5 (depends on 2) The electronic device of claim 2, further comprising a processing circuit, wherein the processing circuit determines the dirtiness level according to alight pattern formed by the second optical data. ### Claim 6 (depends on 2) The electronic device of claim 2, wherein the electronic device is an optical navigation device and the first optical data is for determining a motion of the electronic device. ### Claim 7 (depends on 6) The electronic device of claim 6, wherein the electronic device is at least one of: an auto clean machine, an optical mouse and an optical touch sensing device. ### Claim 8 (depends on 1) The electronic device of claim 1, further comprising a container, wherein at least one of the first light source, the second light source, the first optical sensor, and the second optical sensor are located in the container, and the light guiding device is a cover of the container. ### Claim 9 (depends on 1) The electronic device of claim 1, wherein the first light and the second light are emitted simultaneously. ### Claim 10 An electronic device, comprising: a first light source, configured to emit first light; an optical component, configured to receive the first light from the first light source, and configured to pass partial of the first light; at least one second light source, configured to emit second light; a light guiding device, configured to receive the second light; and an optical sensor, configured to sense first optical data generated based on reflected light of the first light, and configured to sense second optical data generated based on the second light emitted by the light guiding device; wherein the reflected light of the first light is reflected by the optical component and transmitted to the optical sensor. ### Claim 11 (depends on 10) The electronic device of claim 10, wherein the second optical data is for determining a dirtiness level of the light guiding device. ### Claim 12 (depends on 11) The electronic device of claim 11, further comprising a processing circuit, wherein the processing circuit determines the dirtiness level is higher than a dirtiness threshold if a brightness level of the second optical data is lower than a brightness threshold. ### Claim 13 (depends on 11) The electronic device of claim 11, further comprising a processing circuit, wherein the processing circuit determines the dirtiness level is higher than a dirtiness threshold if a brightness level of the second optical data is higher than a brightness threshold. ### Claim 14 (depends on 11) The electronic device of claim 11, further comprising a processing circuit, wherein the processing circuit determines the dirtiness level according to alight pattern formed by the second optical data. ### Claim 15 (depends on 11) The electronic device of claim 11, wherein the electronic device is an optical navigation device and the first optical data is for determining a motion of the electronic device. ### Claim 16 (depends on 15) The electronic device of claim 15, wherein the electronic device is at least one of: an auto clean machine, an optical mouse and an optical touch sensing device. ### Claim 17 (depends on 10) The electronic device of claim 10, further comprising a container, wherein at least one of the first light source, the second light source, the first optical sensor, and the second optical sensor are located in the container, and the light guiding device is a cover of the container. ### Claim 18 (depends on 10) The electronic device of claim 10, wherein the first light and the second light are emitted non-simultaneously.