Multiple field-of-view (FOV) optical sensor using a micro-electro-mechanical system (MEMS) micro- mirror array (MMA)

    公开(公告)号:US12130384B2

    公开(公告)日:2024-10-29

    申请号:US17217929

    申请日:2021-03-30

    申请人: Raytheon Company

    摘要: A multiple FOV optical sensor includes a primary mirror having first and second rings of differing curvature to collect light from an object within different FOV. A secondary mirror includes a MEMS MMA in which the mirrors tip and tilt in 2 DOF or add piston in 3 DOF to (I) reflect light from the first ring within the first FOV that is focused at an imaging plane coincident with an imaging detector to form a focused image of the object at the imaging detector or (II) reflect light from the second ring within the second FOV onto the imaging detector (either focused to form a focused image or defocused to form a blurred spot). The MEMS MMA may be configured to alternate between (I) and (II) or to perform both (I) and (II) at the same time with the different FOV either overlapped or spatially separated on the detector. The sensor may be configured as an all-passive sensor, a dual-mode sensor or a hybrid of the two.

    Aligning sensors on vehicles using sensor output

    公开(公告)号:US12123983B2

    公开(公告)日:2024-10-22

    申请号:US16393388

    申请日:2019-04-24

    摘要: Systems and methods of aligning removable sensors mounted on a vehicle based upon sensor output of such sensors are described. Sensor output is collected from a removable sensor (e.g., a digital camera), and a representation of such sensor output is generated (e.g., a digital image). The representation of the sensor output is compared against a spatial template (e.g., a digital mask overlaid on the representation) to determine whether external references in the representation align with corresponding reference indicators in the spatial template. When alignment is required, the removable sensor is aligned by one or both of the following until the external references in a representation of sensor data at an updated current location align with the corresponding reference indicators in the spatial template: (i) adjusting the position of the removable sensor on the vehicle or (ii) adjusting the representation of the sensor output to simulate such repositioning.

    COMPACT PORTABLE NAVIGATION SYSTEM FOR GPS-CHALLENGED REGIONS

    公开(公告)号:US20240337749A1

    公开(公告)日:2024-10-10

    申请号:US18132533

    申请日:2023-04-10

    摘要: A low SWAP-C apparatus and method enable determining precise location and orientation in a GPS-denied environment. A camera image of a scene is registered to a synthetic image predicted according to an initial estimate of location and orientation and a 3D model of the environment to obtain an accurate cross-plane location estimate perpendicular to the camera pointing direction, and an approximate downrange location in the pointing direction. A range sensor is then used to correct and refine the downrange estimate. The steps can be iterated until a required accuracy is attained. The camera can be an electro-optical or infrared imaging system. The range sensor can be a laser range finder or a LIDAR. The initial location estimate can be based on inertial measurements and/or earlier GPS readings. The registration can include applying a photogrammetric bundle-adjustment process. The disclosure is applicable to navigation, weapons pointing, and situational awareness.

    Injection locked on-chip laser to external on-chip resonator

    公开(公告)号:US12092766B2

    公开(公告)日:2024-09-17

    申请号:US17962728

    申请日:2022-10-10

    摘要: Various technologies described herein pertain to injection locking on-chip laser(s) and external on-chip resonator(s). A system includes a first integrated circuit chip and a second integrated circuit chip. The first integrated circuit chip and the second integrated circuit chip are separate integrated circuit chips and can be optically coupled to each other. The first integrated circuit chip includes a laser configured to emit light via a first path and a second path. The second integrated circuit chip includes a resonator formed of an electrooptic material. The resonator can receive the light emitted by the laser of the first integrated circuit chip via the first path and return feedback light to the laser of the first integrated circuit chip via the first path. The feedback light can cause injection locking of the laser to the resonator to control the light emitted by the laser (e.g., via the first and second paths).

    Distance detector, distance detection method, and computer-readable medium

    公开(公告)号:US12085671B2

    公开(公告)日:2024-09-10

    申请号:US17160590

    申请日:2021-01-28

    IPC分类号: G01C3/08 G01S7/48 G01S17/10

    CPC分类号: G01S7/4808 G01S17/10

    摘要: A distance detector 10 includes a light projecting unit 100 which projects light toward a target body, a light receiving unit 200 which receives a reflected light from the target body, a time detection unit 310 which detects a light receiving time from the projecting of measuring light by the light projecting unit 100 to the receiving of the reflected light by the light receiving unit 200, a calculation unit 320 which calculates the distance to the target body based on a detection result of the light receiving time by the time detection unit 310, and an evaluation unit 340 which evaluates the reliability of a calculation result of the distance to the target body by the calculation unit 320 based on a deviation of the distance corresponding to the calculation result from a reference value regarding the distance to the target body.

    LIDAR occlusion detection methods and systems

    公开(公告)号:US12085647B2

    公开(公告)日:2024-09-10

    申请号:US17131594

    申请日:2020-12-22

    申请人: Waymo LLC

    摘要: The present disclosure relates to systems and methods for occlusion detection. One example method involves a light detection and ranging (LIDAR) device scanning at least a portion of an external structure within a field-of-view (FOV) of the LIDAR device. The LIDAR device is physically coupled to the external structure. The scanning comprises transmitting light pulses toward the external structure through an optical window, and receiving reflected light pulses through the optical window. The reflected light pulses comprise reflections of the transmitted light pulses returning back to the LIDAR device from the external structure. The method also involves detecting presence of an occlusion that at least partially occludes the LIDAR device from scanning the FOV based on at least the scan of the at least portion of the external structure.

    DISTANCE MEASURING DEVICE, IMAGING DEVICE, AND DISTANCE MEASURING METHOD

    公开(公告)号:US20240295646A1

    公开(公告)日:2024-09-05

    申请号:US18582971

    申请日:2024-02-21

    发明人: YUICHI SUEYOSHI

    IPC分类号: G01S11/12 G01C3/08 G06T7/00

    摘要: A distance measuring device includes a first imaging element having a first pixel having a plurality of photoelectric conversion regions, a second imaging element having a second pixel and having a first parallax in a first direction between the second imaging element and the first imaging element, and distance measuring means for generating integrated distance measuring information based on signals output from the first imaging element and the second imaging element, and the plurality of photoelectric conversion regions have a second parallax in a second direction intersecting the first direction.