# US 2013/0155644 A1 · Lighting device and photographing system including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155644 A1 - Document ID: US20130155644A1 - Status: Published application - Kind: A1 - Application number: 13/593,905 - Filed: 2012-08-24 - Published: 2013-06-20 - Earliest claimed: 2011-12-19 - Assignees: Samsung Electronics Co., Ltd. - Inventors: Masataka Hamada - Web page: https://patentgrep.com/patent/US20130155644A1 ## CPC - G03B 15/02: Illuminating scene - G03B 2215/0567: Solid-state light source, e.g. LED, laser - 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 lighting device and a photographing system including the same are provided. The lighting device including a plurality of light emitting devices which emit lights of wavelengths within the visible ray domain; and an opening arranged in front of the plurality of light emitting devices, wherein the plurality of light emitting devices are arranged in a medium having a low refraction index, and solid structures that are formed of a medium having a high refraction index, are capable of transmitting visible rays therethrough, and are periodically formed on a portion of the opening to face the plurality of light emitting devices, wherein the solid structures are formed in a period such that lights emitted by the plurality of light emitting devices are not reflected. ## Claims ### Claim 1 A lighting device comprising: a plurality of light emitting devices which emit lights of wavelengths within the visible ray domain; and an opening arranged in front of the plurality of light emitting devices, wherein the plurality of light emitting devices are arranged in a medium having a low refraction index, and solid structures that are formed of a medium having a high refraction index, are capable of transmitting visible rays therethrough, and are periodically formed on a portion of the opening to face the plurality of light emitting devices, wherein the solid structures are formed in a period such that lights emitted by the plurality of light emitting devices are not reflected. ### Claim 2 (depends on 1) The lighting device of claim 1, wherein, at the opening, the solid structures are arranged in a first period in front of the center region of the plurality of light emitting devices, and the solid structures are arranged in a second period in front of the peripheral region of the plurality of light emitting devices, wherein the second period is greater than the first period. ### Claim 3 (depends on 2) The lighting device of claim 2, wherein the solid structures arranged in the first period are arranged in a four-direction arrangement, and the solid structures arranged in the second period are arranged in a six-direction arrangement. ### Claim 4 (depends on 2) The lighting device of claim 2, wherein the first period is from about 150 nm to about 250 nm, and the second period is from about 200 nm to about 300 nm. ### Claim 5 (depends on 1) The lighting device of claim 1, wherein, at the opening, a Fresnel lens for emitting auxiliary light is arranged on a surface facing the light emitting devices, and the solid structures are formed on a surface of the Fresnel lens. ### Claim 6 (depends on 5) The lighting device of claim 5, wherein the solid structures are arranged in a first period at the center region of the Fresnel lens, and the solid structures are arranged in a second period at the peripheral region of the Fresnel lens, wherein the second period is greater than the first period. ### Claim 7 (depends on 1) The lighting device of claim 1, wherein, at the opening, a lens for emitting auxiliary light is arranged on a surface facing the light emitting devices. ### Claim 8 (depends on 1) The lighting device of claim 1, wherein the lighting device is used as an auxiliary light for a camera. ### Claim 9 (depends on 8) The lighting device of claim 8, wherein the auxiliary light for a camera is either a photographing auxiliary light or an auxiliary light for focus detection. ### Claim 10 (depends on 1) The lighting device of claim 1, wherein the solid structures are arranged in a period from about 150 nm to about 300 nm, the high refraction index is from about 1.4 to about 2.2, and the low refraction index is a refraction index of air. ### Claim 11 (depends on 1) The lighting device of claim 1, wherein the light emitting device is a LED, an EL, or an OLED. ### Claim 12 (depends on 1) The lighting device of claim 1, wherein the light emitting device emits lights of wavelengths from about 400 nm to about 700 nm. ### Claim 13 (depends on 1) The lighting device of claim 1, wherein the light emitting devices emit color lights of a group consisting of white, red, green, and blue, a group consisting of cyan, magenta, and yellow, or a combination thereof. ### Claim 14 (depends on 1) The lighting device of claim 1, wherein wavelengths of lights emitted by the light emitting devices are variable. ### Claim 15 (depends on 1) The lighting device of claim 1, wherein the embodiment ratio of the solid structure is 1 or greater. ### Claim 16 (depends on 1) The lighting device of claim 1, wherein the solid structure is a cone structure, a circular cylinder structure, a flat panel structure, or a circular truncated cone structure. ### Claim 17 (depends on 1) The lighting device of claim 1, wherein the solid structures are arranged in a four-direction arrangement or a six-direction arrangement. ### Claim 18 (depends on 1) The lighting device of claim 1, further comprising an infrared ray (IR) emitting device which emits lights of wavelengths within IR domain, wherein the solid structures are formed to prevent reflection of the lights of wavelengths within IR domain. ### Claim 19 (depends on 18) The lighting device of claim 18, wherein the IR emitting device emits color lights of a red light emitting device, an IR emitting device, or a combination thereof. ### Claim 20 A photographing system comprising: an image capturing unit which captures images of an object; a lighting device which emits light to the object; and a lighting control unit which controls light emission of the lighting device, wherein the lighting device comprises: a plurality of light emitting devices which emit lights of wavelengths within visible ray domain; and an opening arranged in front of the plurality of light emitting devices, wherein the plurality of light emitting devices are arranged in a medium with a low refraction index, solid structures that are formed of a medium having a high refraction index, are capable of transmitting visible rays therethrough, and are periodically formed on a portion of the opening to face the plurality of light emitting devices, and wherein the solid structures are arranged in a period such that lights emitted by the plurality of light emitting devices are not reflected.