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21.发明授权公开(公告)号：US11627881B2
公开(公告)日：2023-04-18
申请号：US17347419
申请日：2021-06-14
申请人： Avinger, Inc.
发明人： Himanshu N. Patel , Manish Kankaria , Kin F. Chan
摘要： A catheter system for optical coherence tomography includes an elongate catheter body, an optical fiber in the elongate catheter body, and an anamorphic lens assembly coupled with a distal end of the optical fiber. The optical fiber and the lens assembly are together configured to provide a common path for optical radiation reflected from a target and from a reference interface between the distal end of the optical fiber and the lens assembly.
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公开(公告)号：US20230087712A1
公开(公告)日：2023-03-23
申请号：US17798670
申请日：2021-02-10
发明人： Guillaume BLANCHETTE
摘要： Methods and devices for inter-spacecraft optical communication are described. The device includes a transmitter for generating a first multi-wavelength signal composed of a first set of wavelengths; a receiver for detecting a second multi-wavelength signal composed of a second set of wavelengths mutually exclusive from the first set of wavelengths; at least one first optical component configured for propagating the first multi-wavelength signal into free space and for capturing the second multi-wavelength signal from free space, the first and second multi-wavelength signals propagating collinearly in free space in opposite directions; and at least one second optical component coupled between the transmitter, the receiver, and the at least one first optical component, and configured for discriminating between the first multi-wavelength signal and the second multi-wavelength signal and redirecting the first multi-wavelength signal to the at least one first optical component and the second multi-wavelength signal to the receiver.
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公开(公告)号：US20220412882A1
公开(公告)日：2022-12-29
申请号：US17781003
申请日：2021-01-27
申请人： JIANGSU UNIVERSITY
发明人： Zhiqiang ZHOU , Jiawei CONG , Yanqun TONG , Mingyang CHEN , Liu LV , Yonghong FU , Naifei REN
摘要： A non-linear optical pumping detection apparatus and a non-linear optical absorption cross-section measurement method, which can simultaneously measure degenerate and non-degenerate two-photon absorption cross-section spectra. The measurement process is automatic, efficient and fast. The working wavelength band is from 380 nm to near infrared 1064 nm, and the non-linear performance measurement of the super-continuous wide spectra can be realized. A zoom optical system with a larger entrance pupil diameter is adopted as a weak signal acquisition lens. So the weak signal can be effectively extracted from background noise. Meanwhile, the mean square root diameter of an on-axis image point of the zoom optical system is 100 to 150 microns, the divergence angle 2α of the on-axis image point is 30.6 degrees, which well match the optical fiber coupling condition, thereby improving the coupling efficiency of the space light coupling into the optical fiber, and greatly improving the measurement sensitivity.
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公开(公告)号：US20220390727A1
公开(公告)日：2022-12-08
申请号：US17778038
申请日：2021-05-20
发明人： Fang CHENG , Tao HONG , Zhenxing ZHOU
摘要： A flat-plate lens and an optical imaging system are provided. The flat-plate lens, includes a first face and a second face, the first face includes a ring-shaped light-transmitting region and a first reflective region surrounded by the ring-shaped light-transmitting region, and the second face includes an imaging region and a second reflective region surrounding the imaging region. The second reflective region is configured to reflect light to the first reflective region, and the first reflective region is configured to reflect light to the imaging region; the second reflective region includes a first mirror. The first mirror is one selected from the group consisting of a free-form curved mirror, an aspheric mirror and a spherical mirror, and the first reflective region includes at least one selected from the group consisting of a free-form curved mirror, an aspheric mirror, a spherical mirror and a plane mirror.
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25.发明授权公开(公告)号：US11520129B2
公开(公告)日：2022-12-06
申请号：US17480190
申请日：2021-09-21
发明人： John M. Hall
摘要： A low magnification mode of operation of a multiple field of view optical system is based on off-axis reflective afocal assemblies with a common optical exit pupil and having a common mechanical axis of rotation which provides both field of view switching and image de-roll functions. A reflective afocal switching assembly permits variable fields of view while at the same time providing a common axis and mechanism to achieve an optical de-roll of the image. This complex arrangement provides a relatively large change in magnification for an all-reflective optical system than can image over 0.4-12.0 micron spectrum.
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26.发明授权公开(公告)号：US11442258B2
公开(公告)日：2022-09-13
申请号：US16909146
申请日：2020-06-23
申请人： BioFire Defense, LLC
摘要： Optical systems and apparatuses configured for enabling substantially simultaneous observation of a plurality of points in an array from a common reference point. Without the optical systems and apparatuses disclosed herein, less than all of the plurality of points can be observed substantially simultaneously from the common reference point.
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公开(公告)号：US20220134482A1
公开(公告)日：2022-05-05
申请号：US17577332
申请日：2022-01-17
摘要： A laser working machine includes a first slot provided at another end portion of a first body. In the first slot, either one of a first shielding plate and a first light transmissive plate is selectively insertable in a sealed manner. The first shielding plate is configured to block a first optical path. The first light transmissive plate has a first optical path hole through which the first optical path and a second optical path are connectable. The laser working machine includes a second slot provided at a second body end portion of a second body. In the second slot, either one of a second shielding plate and a second light transmissive plate is selectively insertable in a sealed manner. The second shielding plate is configured to block the second optical path. The second light transmissive plate has a second optical path hole.
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公开(公告)号：US11297255B1
公开(公告)日：2022-04-05
申请号：US17024901
申请日：2020-09-18
申请人： Raytheon Company
发明人： Stephen J. Schiller
摘要： An example method includes recording dark images on an image sensor on-board an orbital vehicle during flight, which include a first image recorded before the orbital vehicle is over a predefined location on the Earth and a second image recorded after the orbital vehicle is over the predefined location; and recording third and fourth images on the image sensor during flight based on illumination from a light source that is on-board, with the third image being recorded before the orbital vehicle is over the predefined location and the fourth image being recorded after the orbital vehicle is over the predefined location. A fifth image is recorded on the image sensor during flight while the predefined location on the Earth is visible to the image sensor. The fifth image is based on light from a ground-based calibration system. The light source is calibrated during flight based on the five images.
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公开(公告)号：US11187908B2
公开(公告)日：2021-11-30
申请号：US14214346
申请日：2014-03-14
申请人： IMMY Inc.
摘要： A method for assembling a head mounted display includes providing a rigid structural frame, and forming an inner optical assembly by assembling optical components to the structural frame including at least one micro-display configured to generate an image, and at least one reflective optical component configured to direct the image to a user's eye. The method includes assembling an outer frame to the inner optical assembly to provide protection for the optical components and customization of the head-mounted display for the user.
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公开(公告)号：US20210356232A1
公开(公告)日：2021-11-18
申请号：US17287418
申请日：2019-10-08
发明人： Arnaud Davenel
摘要： An optical radiation-collecting assembly includes a convex mirror, a concave mirror with a central opening and a window, arranged such that light passes through the opening in the concave mirror, is reflected first by the convex mirror and then by the concave mirror, and subsequently passes through the window. The optical assembly is suitable for use in a homing device for guiding a rocket, preventing an optical input component of such a device from being damaged and rendered inoperative from abrasion when exposed to a high-speed air flow containing dense particles. The optical assembly also includes an image-forming function.
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