# US 2014/0192319 A1 · Fundus image detection apparatus and method for obtaining fundus image of eye of animal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192319 A1 - Document ID: US20140192319A1 - Status: Published application - Kind: A1 - Application number: 13/736,071 - Filed: 2013-01-08 - Published: 2014-07-10 - Earliest claimed: 2013-01-08 - Assignees: Altek Corporation - Applicants: Altek Corporation - Inventors: Te-Chao Tsao; Jui-Yuan Yu - Web page: https://patentgrep.com/patent/US20140192319A1 ## CPC - A61B 3/12: for looking at the eye fundus, e.g. ophthalmoscopes (A61B3/13 takes precedence) - A61B 3/0025: {characterised by electronic signal processing, e.g. eye models} - A61B 3/14: Arrangements specially adapted for eye photography - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A fundus image detection apparatus capable of detecting a fundus image of an eye of an animal is provided. The fundus image detection apparatus includes an image capturing unit and an image processing unit electrically connected with the image capturing unit. The image processing unit has a lookup table. The image processing unit corrects the fundus image of the eye of the animal according to the lookup table to diminish pincushion distortion. Moreover, a method for obtaining a fundus image of an eye of an animal is also provided. ## Claims ### Claim 1 A fundus image detection apparatus, adapted to detecting a fundus image of an eye of an animal, the fundus image detection apparatus comprising: an image capturing unit, wherein a depth of field of the image capturing unit is greater than or equal to 0.17 millimeter (mm); and an image processing unit, electrically connected with the image capturing unit, and adapted to correcting the fundus image of the eye of the animal captured by the image capturing unit to diminish pincushion distortion. ### Claim 2 (depends on 1) The fundus image detection apparatus according to claim 1, wherein the image processing unit has a lookup table, and the image processing unit corrects the fundus image of the eye of the animal to diminish pincushion distortion according to the lookup table. ### Claim 3 (depends on 2) The fundus image detection apparatus according to claim 2, wherein the image capturing unit captures a pincushion distortion pattern, the image processing unit has a built-in standard pattern data, and the lookup table is generated by comparing the pincushion distortion pattern with the standard pattern data. ### Claim 4 (depends on 3) The fundus image detection apparatus according to claim 3, wherein the image capturing unit comprises an image capturing element, a lens cover, and a lens disposed between the lens cover and the image capturing element, and the lens cover has the pincushion distortion pattern. ### Claim 5 (depends on 4) The fundus image detection apparatus according to claim 4, wherein the image capturing unit further comprises a light-emitting element adapted to emitting a light beam, and the pincushion distortion pattern of the lens cover is disposed in a transmission path of the light beam. ### Claim 6 (depends on 1) The fundus image detection apparatus according to claim 1, wherein the image capturing unit comprises an image capturing element and a lens connected with the image capturing element, wherein all lenses in the lens are spherical lenses. ### Claim 7 (depends on 1) The fundus image detection apparatus according to claim 1 further comprising an image storage unit electrically connected with the image processing unit, wherein the image storage unit is adapted to storing the corrected fundus image of the eye of the animal. ### Claim 8 A fundus image detection apparatus, adapted to detecting a fundus image of an eye of an animal, the fundus image detection apparatus comprising: an image capturing unit; and an image processing unit, electrically connected with the image capturing unit and having a lookup table, wherein the image processing unit corrects the fundus image of the eye of the animal to diminish pincushion distortion according to the lookup table. ### Claim 9 (depends on 8) The fundus image detection apparatus according to claim 8, wherein the image capturing unit captures a pincushion distortion pattern, the image processing unit has a built-in standard pattern data, and the lookup table is generated by comparing the pincushion distortion pattern with the standard pattern data. ### Claim 10 (depends on 9) The fundus image detection apparatus according to claim 9, wherein the image capturing unit comprises an image capturing element, a lens cover, and a lens disposed between the lens cover and the image capturing element, and the lens cover has the pincushion distortion pattern. ### Claim 11 (depends on 10) The fundus image detection apparatus according to claim 10, wherein the image capturing unit further comprises a light-emitting element adapted to emitting a light beam, and the pincushion distortion pattern of the lens cover is disposed in a transmission path of the light beam. ### Claim 12 (depends on 8) The fundus image detection apparatus according to claim 8, wherein the image capturing unit comprises an image capturing element and a lens connected with the image capturing element, wherein all lenses in the lens are spherical lenses. ### Claim 13 (depends on 8) The fundus image detection apparatus according to claim 8 further comprising an image storage unit electrically connected with the image processing unit, wherein the image storage unit is adapted to storing the corrected fundus image of the eye of the animal. ### Claim 14 A fundus image detection apparatus, adapted to detecting a fundus image of an eye of an animal, the fundus image detection apparatus comprising: an image capturing unit, comprising an image capturing element and a lens connected with the image capturing element, wherein all lenses in the lens are spherical lenses; and an image processing unit, electrically connected with the image capturing unit, and adapted to correcting the fundus image of the eye of the animal captured by the image capturing unit to diminish pincushion distortion. ### Claim 15 (depends on 14) The fundus image detection apparatus according to claim 14 further comprising an image storage unit electrically connected with the image processing unit, wherein the image storage unit is adapted to storing the corrected fundus image of the eye of the animal. ### Claim 16 A method for obtaining a fundus image of an eye of an animal, comprising: capturing the fundus image of the eye of the animal; and correcting the fundus image of the eye of the animal to diminish pincushion distortion of the fundus image forming cambered concave. ### Claim 17 (depends on 16) The method according to claim 16, wherein the step of correcting the fundus image of the eye of the animal to diminish pincushion distortion comprises: correcting the fundus image of the eye of the animal to diminish pincushion distortion according to a lookup table. ### Claim 18 (depends on 17) The method according to claim 17 further comprising: capturing a distorted pattern; providing a standard pattern data; and comparing the distorted pattern with the standard pattern data to generate the lookup table. ### Claim 19 (depends on 16) The method according to claim 16, wherein after correcting the fundus image of the eye of the animal to diminish pincushion distortion, the method further comprises storing the corrected fundus image of the eye of the animal.