10 results about "Angular aperture" patented technology

The present invention relates to a glazing system comprising a vehicle glazing (100), the glazing having a transmission window (111) in a near-infrared range and a diverging lens (20) having a first surface (21) and a second surface (22), opposite the first surface, the second surface (22) being intended to be oriented towards the outside of the glazing, at least one of said first and second surfaces, the diverging lens (20) having a first surface (21) and a second surface (22) being structured, the structured surface comprising a set of structures, in relief, concentric around said optical axis, and according to a radial section of the structured surface, the set of structures form an alternation of facets (210) and counter-facets (211).The diverging lens (20) is arranged and configured so as to receive said emission beam (70) from the LIDAR on the facets of the structures and all or part of the structures, called reference structures, each have facets at an angle Ak with respect to said plane of the diverging lens, the angle Ak of ​​the facets in absolute value increases with the radial distance, each having a height which varies with distance from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1 and the external horizontal angular aperture HFOV2 is greater than the initial horizontal angular aperture HFOV1. Figure for the abbreviation: Fig. 1.

An ultrasonic diagnostic imaging system and method produce attenuation coefficient maps of a region of interest in an ultrasound image. In order to detect the presence of elevation aperture blockage, the system estimates attenuation coefficients by two different methods. The estimates produced by the two different methods are combined to produce a metric, which is evaluated as a function of depth. If the metric satisfies one or more criteria of measurement bias, elevation aperture blockage is identified and an alert of the blockage is produced for the user.

The present invention relates to a glazing system comprising a vehicle glazing unit (100), the glazing unit having a transmission window (111) that transmits in a near-infrared range and a divergent lens (20) having a first surface (21) and a second surface (22) opposite the first surface, the second surface (22) being intended to be oriented outward from the glazing unit, wherein at least one of the first surface and the second surface of the divergent lens (20) is structured, the structured surface comprising a set of raised structures and, in cross section through the structured surface, the set of structures forming alternating facets and counter-facets. The divergent lens (20) is arranged and configured so as to receive the LIDAR emission beam (70) on the facets of the structures and all or some of the structures, referred to as reference structures, have facets each having an angle Ak relative to the plane of the divergent lens, the angle Ak of the facets in absolute value increasing with distance from the optical axis, each reference structure having a height that varies with distance away from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1.

The invention relates to a glazing system comprising a vehicle window (100) including an optical device comprising a first prism (41) attached to the inner surface (12) of the window, the first entrance face (43) of the first prism (41) being arranged to receive a near-infrared LIDAR emission beam (70). According to the invention, the optical device includes a second prismatic optical device (42). The first and second prismatic optical devices (42) are adapted to increase the vertical angular aperture of the external field of view (FOV2) of the LIDAR beam external to the vehicle and to ensure that the angle of attack i' of the median direction of the LIDAR beam relative to the horizontal axis upstream of the first entrance face is negative. Figure for the abstract: Figure 1

The beam expander includes first and second optical elements spaced apart from each other, and a light diffuser having an angular aperture through which incident light is diffused, wherein the first optical element in-couples the diffused light such that light exiting the first optical element has a first cross-sectional shape, and light having a second cross-sectional shape different from the first cross-sectional shape is incident on the second optical element, and the second optical element out-couples the light incident from the first optical element.

The present invention relates to a glazing system comprising a vehicle glazing (100), the glazing having a transmission window (111) in a near-infrared range and an optical device. According to the invention, the optical device comprises a multifaceted element (20), attached to the glazing, the multifaceted element (20) having a textured rear surface with a profile structured by a series of structures (24, 124, 224), and the multifaceted element (20) is arranged and configured to receive the emission beam (70) on the entrance faces (25, 125, 225) of the series of structures (24, 124, 224), each entrance face (25, 125, 225) forming a given angle (α, α0, α+, α-) with the vertical axis (Z) so as to angularly deflect the median direction of the beam exiting the glazing and to increase the vertical angular aperture (FOV2) of the external field of view. Figure for the abstract: Figure 1

The invention relates to a window glass system comprising a vehicle window glass unit having a transmissive window, which window glass unit (100) is capable of receiving a transmitted light beam (70) from a laser radar (7), which transmitted light beam (70) has an intermediate pointing direction (30) and extends over a given internal vertical angular aperture (FOV1), and which window glass system has a so-called reflective prism, which is arranged and configured to transmit the transmitted light beam by refracting from an input face (25) towards a base (26) and then by reflecting off the base (26) towards an output face (28).

The present invention provides a method for inspecting an object placed in a turbid fluid, the method comprising the steps of: A) generating electromagnetic radiation by a radiation source; B) emitting the electromagnetic radiation; C) modulating the amplitude or frequency of the electromagnetic radiation; D) illuminating a surface of the object at a plurality of object points with the modulated electromagnetic radiation, the illumination of the object surface occurring along an illumination beam axis; and E) focusing the electromagnetic radiation reflected from the object points toward a light receiving portion of a detector by an optical system having a focal length, the detector having an aperture having an aperture shape in an aperture plane, the aperture plane being separated from the light receiving portion by a detector distance and the aperture plane being separated from the optical system by an aperture distance, the focusing occurring along the detection beam axis. and F) detecting electromagnetic radiation reflected from the surface of the object with the receiver; and for each of the plurality of object points, G) measuring an indication of a propagation time of the electromagnetic radiation from a reference point in a beam path of the electromagnetic radiation to each object point; and H) outputting the indication of the propagation time, wherein the illumination beam axis and the detection beam axis form a parallax angle, the aperture has an aperture position in a direction perpendicular to at least the illumination beam axis or the aperture beam axis, and the surface of the object is spaced a measurement distance from the receiver.

The present invention relates to a glazing system comprising a vehicle glazing (100), the glazing having a transmission window (111) in a near-infrared range and a converging lens (20) having a first surface (21) and a second surface (22), opposite the first surface, the second surface (22) being intended to be oriented towards the outside of the glazing, at least one of said first and second surfaces, the converging lens (20) having a first surface (21) and a second surface (22) being structured, the structured surface comprising a set of structures, in relief, concentric around said optical axis, and according to a radial section of the structured surface, the set of structures form an alternation of facets (210) and counter-facets (211).The converging lens (20) is arranged and configured so as to receive said emission beam (70) from the LIDAR on the facets of the structures and all or part of the structures, called reference structures, each have facets at an angle Ak with respect to said plane of the converging lens, the angle Ak of ​​the facets in absolute value increases with the radial distance, each having a height which varies with distance from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1 and the external horizontal angular aperture HFOV2 is greater than the initial horizontal angular aperture HFOV1. Figure for the abbreviation: Fig. 1.

The present invention relates to a glazing system comprising a vehicle glazing unit (100), the glazing unit having a transmission window (111) that transmits in a near-infrared range and a convergent lens (20) having a first surface (21) and a second surface (22) opposite the first surface, the second surface (22) being intended to be oriented outward from the glazing unit, wherein at least one of the first surface and the second surface of the convergent lens (20) is structured, the structured surface comprising a set of raised structures and, in cross section through the structured surface, the set of structures forming alternating facets and counter-facets. The convergent lens (20) is arranged and configured so as to receive the LIDAR emission beam (70) on the facets of the structures and all or some of the structures, referred to as reference structures, have facets each having an angle Ak relative to the plane of the convergent lens, the angle Ak of the facets in absolute value increasing with distance from the optical axis, each reference structure having a height that varies with distance away from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1.