# US 2010/0165086 A1 · Light source for vision measuring instrument and positioning system using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0165086 A1 - Document ID: US20100165086A1 - Status: Published application - Kind: A1 - Application number: 12/430,127 - Filed: 2009-04-27 - Published: 2010-07-01 - Earliest claimed: 2008-12-31 - Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.; Hon Hai Precision Industry Co., Ltd. - Inventors: CHIH-KUANG CHANG; LI JIANG; DONG-HAI LI; ZHONG-KUI YUAN; XIAO-GUANG XUE - Web page: https://patentgrep.com/patent/US20100165086A1 ## CPC - G01B 11/005: {coordinate measuring machines} - G03B 15/03: Combinations of cameras with lighting apparatus; Flash units - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract A light source is configured to be mounted to a vision measuring instrument that includes a primary image capture unit capturing an image of an object to be measured, and an auxiliary image capture unit providing a means to aim the primary image capture unit at a determined position. The light source includes a main body defining a through hole for receiving the primary image capture unit, and a mounting hole for readily mounting an auxiliary image capture unit. A luminescent surface is formed on an inner wall bounding the through hole of the main body. A number of light-emitting diodes (LEDs) is disposed on the luminescent surface. ## Claims ### Claim 1 A light source for a vision measuring instrument, the vision measuring instrument comprising a primary image capture unit to capture an image of an object to be measured, and an auxiliary image capture unit providing a means to aim the primary image capture unit at a selected position of the object, the light source comprising: a main body defining a through hole configured for receiving the primary image capture unit, and a mounting hole configured for mounting the auxiliary image capture unit; a luminescent surface formed on an inner wall bounding the through hole of the main body; and a plurality of light-emitting diodes (LEDs) disposed on the luminescent surface. ### Claim 2 (depends on 1) The light source of claim 1, wherein the through hole is stepped, and comprises a great portion and a small portion adjacent to opposite ends of the main body, respectively. ### Claim 3 (depends on 2) The light source of claim 2, wherein the small portion is configured to receive the primary image capture unit. ### Claim 4 (depends on 3) The light source of claim 3, wherein an inner surface bounding the small portion of through hole defines a plurality of securing holes, for cooperating with fasteners to secure the primary image capture unit in the small portion of through hole. ### Claim 5 (depends on 2) The light source of claim 2, wherein the luminescent surface is coned-shaped, and formed on an inner wall bounding the great portion of the through hole. ### Claim 6 (depends on 1) The light source of claim 1, wherein the main body is cylindrical-shaped. ### Claim 7 (depends on 6) The light source of claim 6, wherein the plurality of LEDs is arrayed in concentric rings relative to a central axis of the main body. ### Claim 8 (depends on 7) The light source of claim 7, wherein the luminescent surface is divided into a plurality of zones by contours and radiuses of the rings, the plurality of LEDs in one or more zones can be selectively energized to illuminate the object from different angles. ### Claim 9 A positioning system for aiming a primary image capture unit of a vision measuring instrument at a selected micro region of an object to capture an image of said selected micro region for measuring, the positioning system comprising: a light source configured to be attached to the primary image capture unit to illuminate the object; an auxiliary image capture unit secured to the light source; a display unit capable of showing images captured by the primary image capture unit and the auxiliary image capture unit, respectively; and a processing unit coupled to the primary image capture unit, the auxiliary image capture unit, and the display unit; wherein the processing unit is capable of controlling a movement of the primary image capture unit with regard to the object, thereby making the primary image capture unit aim at said selected micro region. ### Claim 10 (depends on 9) The positioning system of claim 9, wherein the display unit defines a first window to show an image captured by the first image capture unit, and a second window to show an image captured by the second image capture unit. ### Claim 11 (depends on 10) The positioning system of claim 10, wherein the image shown in the first window is a zoom image of a current micro region of the object to be measured, and the image shown in the second window is an image of a wide region including the current micro region of the object, or a full image of the object. ### Claim 12 (depends on 11) The positioning system of claim 11, wherein the processing unit comprises: an image processing module capable of converting images captured by the primary image capture unit and the auxiliary image capture unit to digital signals, and transferring the digital signals to the display unit, therefore the display unit showing corresponding images according to the digital signals; a displacement computing module capable of computing a displacement of the primary image capture unit from a current position to a position aiming at said selected micro region of the object, on the basis of relative positions of the current micro region and said selected micro region of object shown in the second window of the display unit; and a driving module capable of actuating a movement of the first image capture unit with regard to the object, corresponding to the displacement computed by the displacement computing module. ### Claim 13 (depends on 11) The positioning system of claim 11, wherein the first window is greater than the second window.