Patents by Inventor Cécilia Valteau
Cécilia Valteau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11835203Abstract: This disclosure relates to a surgical lighting device for generating a spot of light on a surgical site for use in combination with a fluorescence imaging device. The lighting device comprises a support structure, a subsurface which may be coupled to the support structure to seal the lower surface of the device while allowing light to pass through and a plurality of light sources emitting white light and placed between the support structure and the subsurface. The device further includes a plurality of NIR (near infrared) filters, each NIR filter being associated with a light source and being configured to substantially prevent the transmission of wavelengths within a wavelength band from 680 nm to 900 nm, while minimizing the change in the color temperature of the light spot.Type: GrantFiled: September 2, 2022Date of Patent: December 5, 2023Assignee: Maquet SASInventors: Minh-Hong Vu Thi, Sophie Santiago, Cécilia Valteau
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Publication number: 20220412538Abstract: This disclosure relates to a surgical lighting device for generating a spot of light on a surgical site for use in combination with a fluorescence imaging device. The lighting device comprises a support structure, a subsurface which may be coupled to the support structure to seal the lower surface of the device while allowing light to pass through and a plurality of light sources emitting white light and placed between the support structure and the subsurface. The device further includes a plurality of NIR (near infrared) filters, each NIR filter being associated with a light source and being configured to substantially prevent the transmission of wavelengths within a wavelength band from 680 nm to 900 nm, while minimizing the change in the color temperature of the light spot.Type: ApplicationFiled: September 2, 2022Publication date: December 29, 2022Applicant: MAQUET SASInventors: Minh-Hong VU THI, Sophie SANTIAGO, Cécilia VALTEAU
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Patent number: 10775025Abstract: An LED lighting device (6) having an LED (8) emitting white light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means comprise at least two optical filters (12) that have different transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color temperature of the light emitted by the LED (8).Type: GrantFiled: March 19, 2018Date of Patent: September 15, 2020Assignee: MAQUET SASInventors: Robin Jousse, Cecilia Valteau, Lionel Comte
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Patent number: 10502393Abstract: A lighting device comprises a solid optical collimator (6?), the collimator comprises a truncated cap having an inside surface (10?) operating in total internal reflection and having a small base opening into a frustoconical through recess that is coaxial with the cap and at the centre of which a light source (8?) is placed, and having a refractive large base such that incident light emitted by the light source is guided in totality by the inside surface towards the large base of the cap. The recess of the collimator is disposed in the cap in such a manner as to have a small base open and coinciding with the small base of the cap.Type: GrantFiled: July 27, 2016Date of Patent: December 10, 2019Assignee: MAQUET SASInventors: Cecilia Valteau, Minh Hong Vu Thi, David Genevriere
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Patent number: 10180238Abstract: A lighting device for illuminating an operative field comprises, in an axial lighting dome, a first ring of LEDs at a first color temperature, and a second ring of LEDs at a second color temperature different from said first color temperature, and an annular facetted mirror having semi-reflective facets and arranged about the same axis as said rings of LEDs. Collimation optical systems are provided between each ring of LEDs and the annular facetted mirror having semi-reflective facets. The annular facetted mirror having semi-reflective facets mixes the collimated light beams emitted by the two rings of LEDs coupled to the collimators, and forms first and second collimated resulting mixed light beams having the same intermediate color temperature.Type: GrantFiled: May 31, 2016Date of Patent: January 15, 2019Assignee: MAQUET SASInventors: Minh Hong Vu Thi, Cécilia Valteau
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Publication number: 20180283653Abstract: A lighting device comprises a solid optical collimator (6?), the collimator comprises a truncated cap having an inside surface (10?) operating in total internal reflection and having a small base opening into a frustoconical through recess that is coaxial with the cap and at the centre of which a light source (8?) is placed, and having a refractive large base such that incident light emitted by the light source is guided in totality by the inside surface towards the large base of the cap. The recess of the collimator is disposed in the cap in such a manner as to have a small base open and coinciding with the small base of the cap.Type: ApplicationFiled: July 27, 2016Publication date: October 4, 2018Applicant: Maquet SASInventors: Cecilia Valteau, Minh Hong Vu Thi, David Genevriere
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Publication number: 20180274756Abstract: An LED lighting device (6) having an LED (8) emitting white light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means comprise at least two optical filters (12) that have different transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color temperature of the light emitted by the LED (8).Type: ApplicationFiled: March 19, 2018Publication date: September 27, 2018Applicant: MAQUET SASInventors: Robin JOUSSE, Cecilia VALTEAU, Lionel COMTE
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Patent number: 9920906Abstract: An LED lighting device (6) having an LED (8) emitting white light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means comprise at least two optical filters (12) that have different transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color temperature of the light emitted by the LED (8).Type: GrantFiled: March 11, 2013Date of Patent: March 20, 2018Assignee: Maquet SASInventors: Robin Jousse, Cécilia Valteau, Lionel Comte
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Publication number: 20160356458Abstract: A lighting device for illuminating an operative field comprises, in an axial lighting dome, a first ring of LEDs at a first color temperature, and a second ring of LEDs at a second color temperature different from said first color temperature, and an annular facetted mirror having semi-reflective facets and arranged about the same axis as said rings of LEDs. Collimation optical systems are provided between each ring of LEDs and the annular facetted mirror having semi-reflective facets. The annular facetted mirror having semi-reflective facets mixes the collimated light beams emitted by the two rings of LEDs coupled to the collimators, and forms first and second collimated resulting mixed light beams having the same intermediate color temperature.Type: ApplicationFiled: May 31, 2016Publication date: December 8, 2016Inventors: Minh Hong VU THI, Cécilia VALTEAU
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Publication number: 20160282630Abstract: An LED lighting device comprises first and second LEDs arranged to respectively emit first and second beams of white light having first and second different respective colour temperatures, and a beam splitter arranged to split the first and second light beams respectively into a first reflected portion of the first and second beams and a second transmitted portion of the first and second beams. The LED's and the beam splitter are arranged spatially such that the transmitted portion of the first beam and the reflected portion of the second beam overlap into a first resulting beam of intermediate colour temperature between the first and second colour temperatures, and the reflected portion of the first beam and the transmitted portion of the second beam overlap into a second resulting beam of the same intermediate colour temperature.Type: ApplicationFiled: December 3, 2013Publication date: September 29, 2016Inventors: Cécilia VALTEAU, Minh-Hong VU THUI
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Patent number: 9289269Abstract: A lighting device comprises a first light source (10) at a first color temperature (Tk1), a second light source (20) at a second color temperature (Tk2) that is different from the first color temperature, and an optical system that forms an illumination spot (3) at an intermediate color temperature (Tkr). The optical system comprises a beam splitter (13) that is arranged to split the light produced by each light source (10, 20) into a transmitted light beam and a reflected light beam. It is arranged to focus said transmitted and reflective light beams (FR1, FR2) and to combine them in a certain superposition configuration in a superposition plane in which said illumination spot is formed, and the optical system and the light sources are arranged to modify the size of the illumination spot (3) at said intermediate temperature.Type: GrantFiled: April 11, 2014Date of Patent: March 22, 2016Assignee: MAQUET SASInventors: Cécilia Valteau, Minh Hong Vu Thi
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Publication number: 20140328045Abstract: A lighting device comprises a first light source (10) at a first color temperature (Tk1), a second light source (20) at a second color temperature (Tk2) that is different from the first color temperature, and an optical system that forms an illumination spot (3) at an intermediate color temperature (Tkr). The optical system comprises a beam splitter (13) that is arranged to split the light produced by each light source (10, 20) into a transmitted light beam and a reflected light beam. It is arranged to focus said transmitted and reflective light beams (FR1, FR2) and to combine them in a certain superposition configuration in a superposition plane in which said illumination spot is formed, and the optical system and the light sources are arranged to modify the size of the illumination spot (3) at said intermediate temperature.Type: ApplicationFiled: April 11, 2014Publication date: November 6, 2014Applicant: MAQUET SASInventors: Cécilia VALTEAU, Minh Hong VU THI
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Publication number: 20130258661Abstract: An LED lighting device (6) having an LED (8) emitting white light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means comprise at least two optical filters (12) that have different transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color temperature of the light emitted by the LED (8).Type: ApplicationFiled: March 11, 2013Publication date: October 3, 2013Applicant: MAQUET SASInventors: Robin Jousse, Cécilia Valteau, Lionel Comte