# US 2016/0249809 A1 · Portable noninvasive inspection device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0249809 A1 - Document ID: US20160249809A1 - Status: Published application - Kind: A1 - Application number: 15/149,632 - Filed: 2016-05-09 - Published: 2016-09-01 - Earliest claimed: 2013-10-30 - Assignees: National Chiao Tung University - Applicants: National Chiao Tung University - Inventors: MANG OU-YANG; TING-WEI HUANG; CHIN-SIANG YANG; YAO-FANG HSIEH; SING-TSUNG LI; JIN-CHERN CHIOU; MING-HSUI TSAI; JENG-REN DUANN; YUNG-JIUN LIN; SHUEN-DE WU; YUNG-JHE YAN; ZHENG-LIN HE - Web page: https://patentgrep.com/patent/US20160249809A1 ## CPC - A61B 5/0071: {by measuring fluorescence emission} - A61B 1/00108: {characterised by self-sufficient functionality for stand-alone use} - A61B 1/00186: {with imaging filters} - A61B 1/043: {for fluorescence imaging} - A61B 1/063: {for monochromatic or narrow-band illumination} - A61B 1/0646: {with illumination filters} - A61B 1/0684: {using light emitting diodes [LED]} - A61B 1/24: for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth - A61B 5/0084: {for introduction into the body, e.g. by catheters (A61B5/1459 takes precedence)} - A61B 1/00016: {using wireless means} - A61B 1/00032: {internally powered} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The present invention discloses a portable noninvasive inspection device, which comprises a light source illuminates a target to generate an optical inspection signal; a probe head provides an optical path for light source to receive optical inspection signal; a probe tube arranged at a front end of probe head; at least one switched filter module arranged in the optical path, allowing the optical inspection signal to pass there through to generate a corresponding spectral signal; and an image sensor arranged behind the switched filter module, receiving the spectral signal and generating a spectral image. The spectral image can be transmitted to an external device, wherefrom the user can use the spectral image to examine the target in further detail. The present invention features a rotary-type or movable-type switched filter module, which facilitates the user to switch filters easily during optical inspection. ## Claims ### Claim 1 A portable noninvasive inspection device comprising a light source illuminating a target to generate an optical inspection signal; a probe head providing an optical path for said light source to receive said optical inspection signal; a probe tube arranged at a front end of said probe head, said probe tube comprising: a base arranged at a front end of said probe head and having a mounting seat at a center thereof, wherein a center of said mounting seat includes a light-extracting hole and an outer side of said mounting seat further includes at least one light-entering hole for receiving lights from said light source; an optical module arranged on said mounting seat; an inner sleeve arranged on said base and annularly telescoped with an outside of said optical module and located at an inner side of said light-entering hole, wherein said inner sleeve includes a first opening at a top thereof and a first reflective surface at an outer wall thereof; and an outer sleeve arranged on said base and annularly telescoped with an outside of said inner sleeve and said light-entering hole for forming a light channel with said inner sleeve, wherein said outer sleeve includes a second opening located at a top thereof and corresponds to said first opening and a second reflective surface located at an inner wall thereof, and when lights of said light source enters said light channel through said light-entering hole, and is projected to said target so as to reflect said optical inspection signal, which enters said optical module through said first opening and said second opening and finally enters said probe head through said light-extracting hole. at least one switched filter module arranged in said optical path, allowing said optical inspection signal to pass there through to generate a corresponding spectral signal; and an image sensor arranged behind said at least one switched filter module, receiving said spectral signal and generating a spectral image, said switched filter module being a rotary-type switched filter module. ### Claim 2 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said light source contains at least one light emitting diode or laser device. ### Claim 3 (depends on 2) The portable noninvasive inspection device according to claim 2, wherein said light source contains a plurality of light emitting diodes or laser devices arranged annularly. ### Claim 4 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said switched filter module is arranged inside said probe head, and one of said filters is exactly aligned to said optical path. ### Claim 5 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said rotary-type switched filter module includes a rotation disc having a plurality of positioning slots where said filters are inserted, and said rotation disc is rotated to switch said filters. ### Claim 6 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said filters in said switched filter module are switched manually or automatically. ### Claim 7 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said probe head includes a front probe head structure and a rear probe head structure; said front probe head structure and said rear probe head structure are assembled together with a penetrating space formed there inside to function as said optical path; said switched filter module is arranged between said front probe head structure and said rear probe head structure, and one of said filters is aligned to said optical path. ### Claim 8 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said probe head is a connection ring; said switched filter module is arranged inside said connection ring, and said image sensor is arranged behind said connection ring. ### Claim 9 (depends on 1) The portable noninvasive inspection device according to claim 1 further comprising a hand-held body accommodating said image sensor and connected with said probe head. ### Claim 10 (depends on 9) The portable noninvasive inspection device according to claim 9 further comprising a battery module arranged inside said hand-held body, electrically connected with said light source and said image sensor and supplying power to said light source and said image sensor. ### Claim 11 (depends on 9) The portable noninvasive inspection device according to claim 9 further comprising a wireless communication module arranged inside said hand-held body, electrically connected with said image sensor and transmitting said spectral image to an external device. ### Claim 12 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said light source is arranged before or beside said probe tube. ### Claim 13 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein the surface of said outer sleeve of said probe tube is further processed with a sandblasting and blackening process. ### Claim 14 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein a surface of said probe head is sand-blasted and blackened. ### Claim 15 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said light source is arranged before or behind said switched filter module. ### Claim 16 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said spectral image is a biomedical image, a fluorescent image or a spectrum-based image. ### Claim 17 (depends on 16) The portable noninvasive inspection device according to claim 16, wherein said light source is an exciting light source for said target; said light source excites said target to generate a fluorescent signal as said optical inspection signal; said optical inspection signal is filtered by said switched filter module; said image sensor receives said optical inspection signal filtered and generates said fluorescent image. ### Claim 18 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein an upper surface of said base further includes a third reflective surface located at an outer side of said mounting seat. ### Claim 19 (depends on 1) The portable noninvasive inspection device according to claim 1, wherein said inner sleeve further includes a first reflective ramp annularly arranged at a bottom thereof. ### Claim 20 (depends on 19) The portable noninvasive inspection device according to claim 19, wherein said outer sleeve further includes a second reflective ramp annularly arranged at a bottom thereof.