# US 12,215,853 B2 · Optical system including dome light and coaxial light and method for designing optical system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,215,853 B2 - Document ID: US12215853B2 - Status: Granted - Kind: B2 - Application number: 18/597,336 - Filed: 2024-03-06 - Published: 2024-06-27 - Granted: 2025-02-04 - Earliest claimed: 2021-09-06 - Assignees: Samsung Electronics Co., Ltd.; Seoul National University R&Db Foundation - Applicants: Samsung Electronics Co., Ltd.; Seoul National University R&Db Foundation - Inventors: Yeoreum Yoon; Byoungho Lee; Hanjin Cho; Yongsung Kim; Taeeun Kim; Siwoo Lee; Jiyong Jang - Web page: https://patentgrep.com/patent/US12215853B2 ## CPC - F21V 5/00: Refractors for light sources (characterised by cooling arrangements F21V29/504) - F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources} - G01B 11/24: for measuring contours or curvatures - G01N 21/88: Investigating the presence of flaws or contamination - G01N 21/95: characterised by the material or shape of the object to be examined (G01N21/89 - G01N21/91, G01N21/94 take precedence) - G01N 21/956: Inspecting patterns on the surface of objects {(contactless testing of electronic circuits G01R31/308; testing currency G07D; manufacturing processes per se of semiconductor devices implementing a measuring step H10P74/20)} - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - 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) - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract A method of designing an optical system including a dome light and coaxial light, includes: determining a distance between the dome light and the coaxial light based on a radius reduction according to a hole of the dome light; determining a size of the coaxial light based on an optical path of a light ray emitted from the coaxial light; and determining a structure of a printed circuit board (PCB) in the dome light based on an optical path through which the light ray emitted from the coaxial light is reflected by an object. ## Claims ### Claim 1 A method of designing an optical system including a dome light and a coaxial light, the method comprising: determining a distance between the dome light and the coaxial light based on a radius reduction according to a hole of the dome light; determining a size of the coaxial light based on an optical path of a light ray emitted from the coaxial light; and determining a structure of a printed circuit board (PCB) in the dome light based on an optical path through which the light ray emitted from the coaxial light is reflected by an object. ### Claim 2 (depends on 1) The method of claim 1, wherein the determining the distance between the dome light and the coaxial light comprises determining the radius reduction according to the hole of the dome light based on a radius of the dome light and a size of the hole of the dome light. ### Claim 3 (depends on 2) The method of claim 2, wherein the determining the distance between the dome light and the coaxial light comprises determining the radius reduction according to the hole of the dome light by using a spatial relationship of a triangle having a hypotenuse corresponding to the radius of the dome light, a base corresponding to one half of the size of the hole of the dome light, and a height corresponding to a difference between the radius reduction according to the hole of the dome light and the radius of the dome light. ### Claim 4 (depends on 1) The method of claim 1, wherein the determining the size of the coaxial light comprises determining the size of the coaxial light based on a difference between the radius reduction according to the hole of the dome light and a radius of the dome light, the size of the hole of the dome light, and the distance between the dome light and the coaxial light. ### Claim 5 (depends on 4) The method of claim 4, wherein the determining the size of the coaxial light further comprises determining the size of the coaxial light by using a spatial relationship of an isosceles triangle with a base corresponding to the size of the coaxial light and with a height corresponding to the size of the coaxial light, the distance between the dome light and the coaxial light, and the difference between the radius reduction according to the hole of the dome light and the radius of the dome light. ### Claim 6 (depends on 1) The method of claim 1, wherein the dome light comprises the PCB, a plurality of light emitting diodes (LEDs) mounted on the PCB, and a diffuser; and wherein the determining the structure of the PCB in the dome light comprises determining the structure of the PCB based on a size difference between the PCB and the diffuser. ### Claim 7 (depends on 6) The method of claim 6, wherein the determining the structure of the PCB in the dome light comprises determining the size difference between the PCB and the diffuser based on a difference between the radius reduction according to the hole of the dome light and a radius of the dome light, the size of the coaxial light, and a thickness of the dome light. ### Claim 8 (depends on 7) The method of claim 7, wherein the determining the structure of the PCB in the dome light comprises determining the size difference between the PCB and the diffuser by using a spatial relationship of a first triangle having a base corresponding to the size difference between the PCB and the diffuser and a height corresponding to the thickness of the dome light, and a spatial relationship of a second triangle having a base corresponding to ¼ of the size of the coaxial light and a height corresponding to a thethe difference between the radius reduction according to the hole of the dome light and the radius of the dome light, and the size of the coaxial light. ### Claim 9 An optical system comprising: a dome light comprising a printed circuit board (PCB); and a coaxial light, wherein the dome light and the coaxial light are arranged in correspondence to a distance between the dome light and the coaxial light, based on a radius reduction according to a hole of the dome light, wherein a size of the coaxial light is based on an optical path of a light ray emitted from the coaxial light, and wherein a structure of the PCB of the dome light is based on an optical path through which the light ray emitted from the coaxial light is reflected by an object. ### Claim 10 (depends on 9) The optical system of claim 9, wherein the radius reduction according to the hole of the dome light is based on a radius of the dome light and a size of the hole of the dome light. ### Claim 11 (depends on 10) The optical system of claim 10, wherein the radius reduction according to the hole of the dome light is determined by using a spatial relationship of a triangle having a hypotenuse corresponding to the radius of the dome light, a base corresponding to one half of the size of the hole of the dome light, and a height corresponding to a difference between the radius reduction according to the hole of the dome light and the radius of the dome light. ### Claim 12 (depends on 9) The optical system of claim 9, wherein the size of the coaxial light is based on a difference between the radius reduction according to the hole of the dome light a radius of the dome light, a size of the hole of the dome light, and the distance between the dome light and the coaxial light. ### Claim 13 (depends on 12) The optical system of claim 12, wherein the size of the coaxial light is determined by using a spatial relationship of an isosceles triangle having a base corresponding to the size of the coaxial light and a height corresponding to the size of the coaxial light, the distance between the dome light and the coaxial light, and the difference between the radius reduction according to the hole of the dome light and the radius of the dome light. ### Claim 14 (depends on 9) The optical system of claim 9, wherein the dome light further comprises a plurality of LEDs mounted on the PCB and a diffuser; and wherein the structure of the PCB is based on a size difference between the PCB and the diffuser. ### Claim 15 (depends on 14) The optical system of claim 14, wherein the size difference between the PCB and the diffuser is based on a difference between the radius reduction according to the hole of the dome light and a radius of the dome light, the size of the coaxial light, and a thickness of the dome light.