# US 10,767,984 B2 · Method for assembling a projecting apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,984 B2 - Document ID: US10767984B2 - Status: Granted - Kind: B2 - Application number: 16/266,315 - Filed: 2019-02-04 - Published: 2019-08-08 - Granted: 2020-09-08 - Earliest claimed: 2018-02-05 - Assignees: Inuitive Ltd. - Applicants: Inuitive Ltd. - Inventors: Mishel Ivgi - Web page: https://patentgrep.com/patent/US10767984B2 ## CPC - G01B 11/2513: {with several lines being projected in more than one direction, e.g. grids, patterns} - G01B 5/0004: {Supports (G01B5/025 takes precedence)} - G01B 11/2545: {with one projection direction and several detection directions, e.g. stereo} - G03B 21/00: Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00) - G06Q 10/40: Business processes related to social networking or social networking services - G06Q 30/0239: {Online discounts or incentives} - H04L 51/046: Interoperability with other network applications or services - H04L 63/0407: {wherein the identity of one or more communicating identities is hidden (cryptographic mechanisms or cryptographic arrangements for anonymous credentials or for identity based cryptographic systems H04L9/00)} - H04L 65/611: for multicast or broadcast (systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06) - H04L 65/762: {at the source (reformatting of additional data in video distribution servers H04N21/2355)} - H04L 67/1044: {Group management mechanisms (management of multicast group membership H04L12/185; reconfiguring of node membership in a computing system to eliminate errors G06F11/1425)} - G03B 21/145: {Housing details, e.g. position adjustments thereof} - 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) - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method is provided for assembling a 3D sensing apparatus that comprises at least two projectors, wherein the assembling of the apparatus is carried out by ensuring that a pattern formed from a combination of images projected by each of the at least two projectors, is not formed along an epi-polar line or part thereof more than once. The method comprises the steps of: placing the at least two projectors at initial approximate physical positions within the 3D sensing apparatus; and, placing one or more projectors' protectors on top of the at least two projectors, thereby changing the projectors initial positions and automatically positioning them accurately in their pre-defined position and orientation by using the one or more projectors' protectors. ## Claims ### Claim 1 A method for assembling a 3D sensing apparatus that comprises at least two projectors, wherein the assembling of the apparatus is carried out by ensuring that a pattern formed from a combination of images projected by each of the at least two projectors, is not formed along an epi-polar line or part thereof more than once, wherein the method comprising the step of: placing the at least two projectors at initial approximate physical positions within said 3D sensing apparatus; and placing one or more projectors' protectors on top of the at least two projectors, thereby changing the projectors initial positions and automatically positioning them accurately in their pre-defined position and orientation by using the one or more projectors' protectors. ### Claim 2 (depends on 1) The method of claim 1, wherein the step of positioning the at least two projectors at their pre-defined position and orientation, comprises positioning the at least two projectors at their pre-defined position and orientation which do not completely overlap shape of their respective pads that are used to mount said at least two projectors at said 3D sensing apparatus. ### Claim 3 (depends on 2) The method of claim 2, wherein the step of positioning the at least two projectors in their pre-defined position and orientation comprises positioning the at least two projectors in accordance with optical position rather than according to their pad shape, thereby obtaining their alignment at the optical component level. ### Claim 4 (depends on 1) The method of claim 1, wherein the alignment accuracy obtained by implementing said method is less than ±1.0°. ### Claim 5 (depends on 4) The method of claim 4, wherein the obtained alignment accuracy is less than ±0.5°. ### Claim 6 (depends on 1) The method of claim 1, wherein the final positioning of the at least two projectors are determined in accordance with pre-defined orientation of the respective projectors' lens of the at least two projectors. ### Claim 7 (depends on 1) The method of claim 1, wherein the pre-defined orientation of the respective projectors' lens is derived from a pre-defined angle selected to avoid projecting a repeating pattern. ### Claim 8 (depends on 1) The method of claim 1, further comprising a step of applying a reflow process onto said apparatus, following the placement of the at least two projectors and the placement of the one or more projectors' protectors at their respective locations. ### Claim 9 (depends on 1) The method of claim 1, wherein said at least two projectors are mounted each onto the apparatus by using two flexible positioning arms configured to push the at least two projectors against the top part of the respective protector, thereby positioning the respective projector at its pre-defined position and orientation. ### Claim 10 (depends on 8) The method of claim 8, wherein said one or more projectors' protectors is made of a plastic material that can be subjected to temperatures developed during the reflow step without losing its shape and properties.