# US 10,441,379 B2 · Multipurpose medical illuminator with magnification > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,379 B2 - Document ID: US10441379B2 - Status: Granted - Kind: B2 - Application number: 15/856,606 - Filed: 2017-12-28 - Published: 2019-07-04 - Granted: 2019-10-15 - Earliest claimed: 2017-12-28 - Assignees: 3Gen, Inc. - Applicants: 3Gen, Inc. - Inventors: Nizar Mullani - Web page: https://patentgrep.com/patent/US10441379B2 ## CPC - A61B 90/361: {Image-producing devices, e.g. surgical cameras} - A61B 5/0059: {using light, e.g. diagnosis by transillumination, diascopy, fluorescence (photoacoustic A61B5/0093; optical measurement of heart rate A61B5/02416; optical measurement of blood flow A61B5/0261; optical measurement of analytes A61B5/1455)} - A61B 5/441: {Skin evaluation, e.g. for skin disorder diagnosis} - A61B 90/35: Supports therefor - G02B 5/3025: {Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state (G02B5/3008, G02B5/3016 take precedence)} - G02B 25/007: {comprising other optical elements than lenses (G02B25/004, G02B25/005 take precedence)} - G02B 25/008: {comprising two or more lenses (G02B25/004 - G02B25/007 take precedence)} - A61B 90/13: guided by light, e.g. laser pointers - A61B 2090/309: {using white LEDs} - G02B 25/02: with means for illuminating object viewed - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The disclosure demonstrates a multipurpose illuminator used in medical examinations. The multipurpose illuminator described herein employs a housing incorporating two magnification viewing lenses each having different powered magnification that allows medical practitioners to view patient tissue and structures using two different magnifications. A battery power source is also contained in the housing to provide power to an illumination source. The illumination source may include an array of LEDs to provide light for viewing the patient tissue and matter. The illumination source and the lenses may be cross polarized relative to each other to provide enhanced viewing of the patient tissues and structures. A switch is provided to initiate the LED illumination source or to provide modes of operation that provide certain of the LEDs being illuminated. ## Claims ### Claim 1 An illumination device for non-contact illumination of organic tissue comprising: a housing; a first polarized lens assembly positioned in the housing and having a first lens and a first polarizer, the first lens being disposed about a first viewing axis and being of a first magnification power; a second polarized lens assembly positioned in the housing and having a second lens and a second polarizer, the second lens being disposed about a second viewing axis and being of a second magnification power, the first and second lenses being separate from each other and the first and second viewing axes being spaced apart from each other; at least one polarized light source positioned in the housing and including a light element and a light polarizer; and wherein either one or both of the first and second polarizers are cross-polarized relative to the at least one polarized light source. ### Claim 2 (depends on 1) The illumination device of claim 1, wherein the at least one polarized light source comprises: a first light source positioned in the housing to provide light for the first lens; and a second light source positioned in the housing to provide light for the second lens. ### Claim 3 (depends on 2) The illumination device of claim 2 wherein said first light source is an array of LEDs, and said second light source is an array of LEDs. ### Claim 4 (depends on 3) The illumination device of claim 3 wherein said array of LEDs of said first light source and the array of LEDs of the second light source share at least one LED. ### Claim 5 (depends on 2) The illumination device of claim 2 further comprising a switch in electrical communication with said light sources, said switch adapted to toggle each of the light sources off and on. ### Claim 6 (depends on 2) The illumination device of claim 2 wherein said first and second light sources each include at least one LED. ### Claim 7 (depends on 6) The illumination device of claim 6 wherein said LEDs are white light LEDs. ### Claim 8 (depends on 2) The illumination device of claim 2 wherein said first and second light sources each include at least one surface mount high power LED. ### Claim 9 (depends on 1) The illumination device of claim 1 further comprising a battery power source incorporated into said housing. ### Claim 10 (depends on 1) The illumination device of claim 1 wherein the first lens magnification is in the range of 1.2× to 3.0×. ### Claim 11 (depends on 1) The illumination device of claim 1 wherein the first lens magnification is 1.43×. ### Claim 12 (depends on 1) The illumination device of claim 1 wherein the second lens magnification is in the range of 5× to 10×. ### Claim 13 (depends on 1) The illumination device of claim 1 wherein the second lens magnification is 6×. ### Claim 14 (depends on 1) The illumination device of claim 1, wherein the housing includes a first opening, the first lens being optically aligned with the first opening. ### Claim 15 (depends on 14) The illumination device of claim 14, wherein the housing includes a second opening, the second lens being optically aligned with the second opening. ### Claim 16 An illumination device for illumination of organic tissue, the illumination device comprising: a housing having a first opening defining a first axis and a second opening defining a second axis, the first and second openings being separate from each other and the first and second axes being spaced apart from each other; a first lens having a first magnification power coupled to the housing and in optical alignment with the first opening; a second lens having a second magnification power coupled to the housing and in optical alignment with the second opening, the second lens being separated from the first lens; a first lens polarizer in optical alignment with the first lens; a second lens polarizer in optical alignment with the second lens and separated from the first lens polarizer; a plurality of light sources coupled to the housing; and at least one light source polarizer in alignment with at least one of the plurality of light sources for polarizing at least a portion of the light emitted from the at least one of the plurality of light sources. ### Claim 17 (depends on 16) The illumination device of claim 16, wherein the plurality of light sources includes a first pair of light sources arranged in diametrically opposed relation to the first lens. ### Claim 18 (depends on 17) The illumination device of claim 17, wherein the plurality of light sources includes a second pair of light sources arranged in diametrically opposed relation to the second lens. ### Claim 19 (depends on 18) The illumination device of claim 18, wherein the first pair of light sources and the second pair of light sources includes a common light source. ### Claim 20 (depends on 16) The illumination device of claim 16, wherein the housing includes a plurality of openings in optical alignment with respective ones of the plurality of light sources. ### Claim 21 An illumination device for illumination of organic tissue, the illumination device comprising: a housing having first and second openings; a first lens having a first magnification power coupled to the housing and in optical alignment with the first opening; a second lens having a second magnification power coupled to the housing and in optical alignment with the second opening, the second lens being separated from the first lens; at least one lens polarizer in optical alignment with either one or both of the first lens and the second lens; a plurality of light sources coupled to the housing and including a first pair of light sources arranged in diametrically opposed relation to the first lens, a second pair of light sources arranged in diametrically opposed relation to the second lens, wherein the first pair of light sources and the second pair of light sources includes a common light source; and at least one light source polarizer in alignment with at least one of the plurality of light sources for polarizing at least a portion of the light emitted from the at least one of the plurality of light sources. ### Claim 22 An illumination device for illumination of organic tissue, the illumination device comprising: a housing having first and second openings; a first lens having a first magnification power coupled to the housing and in optical alignment with the first opening; a second lens having a second magnification power coupled to the housing and in optical alignment with the second opening, the second lens being separated from the first lens; a first lens polarizer in optical alignment with the first lens; a second lens polarizer in optical alignment with the second lens and separated from the first lens polarizer; a plurality of light sources coupled to the housing, the plurality of light sources including a first pair of light sources arranged in diametrically opposed relation to the first lens and a second pair of light sources arranged in diametrically opposed relation to the second lens, the first pair of light sources and the second pair of light sources including a common light source; and at least one light source polarizer in alignment with at least one of the plurality of light sources for polarizing at least a portion of the light emitted from the at least one of the plurality of light sources.