717 results about "Beam angle" patented technology

This patent generally relates to developing treatment plans for use in external beam radiation therapy, and more particularly to a method, a system and a computer readable media that contains programming for the development of external beam radiation therapy treatment plans. Embodiments of the invention include (1) automatically setting beam angles based on a beam angle automation algorithm, (2) judiciously designing planning structures and (3) automatically adjusting the objectives of the objective function based on a parameter automation algorithm.

The present invention relates to laser ranging and detection by sequentially emitting a plurality of beams from a vertical-cavity surface-emitting laser (VCSEL) structure, re-directing the beams through optical elements such that they are fanned out over the region of view, and detecting any beams that may be reflected by objects in the region of view. The range and bearing of such objects can be determined from the beam time-of-flight and beam angle.

In a laser radar, a first scanning member scans a laser beam in a virtual plane passing through an axis. A control means controls displacements of the first scanning member to change a scan beam angle in the plane. A second scanning member deflects the scanned laser beam and again scans the deflected laser beam toward an external space. A light collecting means collects reflected light. A driving means rotates both the second scanning member and the light collecting means about the axis. The second scanning member has a deflecting surface to deflect the laser beam. The deflecting surface is formed around the axis and has a plurality of reflecting surfaces coaxially arranged centering on the axis. The reflecting surfaces have different inclinations with respect to a horizontal plane perpendicular to the axis.

An infrared surveillance system including a first member with a first infrared light source mounted thereto, and a second member with a second infrared light source mounted thereto. The second member is positionally adjustable relative to the first member. The surveillance system also includes an infrared camera in operative communication with at least the second member to vary an illumination field provided by the first and second light sources depending on the camera's field of view. The surveillance system also includes at least one controller for varying the output intensity of the light sources.

Embodiments described herein provide systems and methods for promoting plant growth that combine beam angle control with spectral control. In one embodiment, an optical device can be configured to emit multiple colors of light at particular wavelengths. The optical device may also be configured to generate an emission spectrum with multiple peaks. The spectrum can be selected based on stimulating biological processes of a plant.

The present invention relates to an LED lens, in which a planar bottom has a pair of halves symmetrically connected with each other about a reference line and narrowed in the vicinity of the reference line. A pair of substantially semicircular reflecting surfaces are extended from both edges of the bottom connected with both ends of the reference line. A radiating surface is connected with remaining edges of the bottom and semicircular edges of the reflecting surfaces. The reflecting surfaces reflect light beams are introduced from the LED chip through the bottom toward the radiating surface. The radiating surface radiates the light beams to the outside when the light beams are introduced to the radiating surface through reflection from the reflecting surfaces and directly through the bottom, so that the light beams are radiated to the outside in a predetermined beam angle.

An antenna array employing a combined azimuth and elevation beam angle adjustment electromechanical system is disclosed. The system employs a dual purpose remotely controllable actuator. The actuator is used to adjust azimuth angle of the antenna array and radiation beam tilt of the same. An antenna array employing a combined azimuth, beamwidth and elevation beam angle adjustment electromechanical system is also disclosed.

A light-emitting device comprises a semiconductor light-emitting stack; and an optical field tuning layer formed on the semiconductor light-emitting stack to change beam angles of the light-emitting device.

The invention discloses an LED straight lamp made of a transparent glass tube. The LED straight lamp comprises a transparent glass tube body (20) and two lamp holders (10 and 11). Both the transparent glass tube body (20) and the lamp holders (10 and 11) meet the specifications of an ordinary straight tube fluorescent lamp, and the lamp holders (10 and 11) are respectively adhered to two ends of the transparent glass tube body (20). The LED straight lamp made of the transparent glass tube can also be made by the glass burn sealing technology of the ordinary straight tube fluorescent lamp. LED lamp filaments are directly welded to welding platforms (33) of LED supports (31) in the middle of an aluminum substrate (30). The outside of the bottom cross section of the aluminum substrate (30) is circular arc shaped with the curvature matching with that of the inner side of the cross section of the transparent glass tube body (20). Enough height is to be reserved between the welding platforms (33) and the aluminum substrate (30) so that light emitted from the LED lamp filaments is orthogonal to the inner wall of the transparent glass tube body (20), light consumption brought by multiple reflections is reduced, and the beam angle of the LED straight lamp made of the transparent glass tube can reach more than 300 degrees.

The invention discloses a network-control-based indoor lighting system. A lighting control system is constructed in an equipment control unit which is connected with a network; and software for controlling the indoor lighting control system is included in a remote controller and can be used for controlling the indoor lighting system through a network system. The system can be used for adjusting and controlling brightness of various light emitting diode (LED) lamps, color temperature of lamp light, beam angle of the lamp light, lighting direction of the light and single-point/multi-point LED lamp control capacity, and also has an on-line fault diagnosis function of the lamp.

A beam-forming apparatus and method for improving system performance using a spatial interpolation and at least one Angle of Arrival (AoA) in a system based on regular spatial sampling is provided. The AoA is estimated using a carrier-to-interference ratio. Beam-forming angles are distributed and steered in a predefined scheme such that an identical process is applied in all directions. According to this steering, a linear system model is computed based on regular spatial sampling using regular spatial separation at beam angles. Beam-forming performance is improved by compensating for a difference between adaptive and sector-type arrays. Only the steps of computing a spatial interpolation and determining an angle range for beam-forming using at least one AoA are added. The precision of estimating an AoA and the precision of beam-forming increase without an additional antenna. Because the system is simpler than that of an adaptive beam-forming system, significant gain is obtained.

The invention relates to a low-light-loss tube lamp adjusting structure. The low-light-loss tube lamp adjusting structure is connected between a tube lamp light source part and a light adjusting part, and comprises an arc-shaped guide part arranged on the light adjusting part and a sliding part arranged on the light source part, wherein the sliding part moves along the arc-shaped guide part. The low-light-loss tube lamp adjusting structure has the beneficial effects that the angle adjustment is performed on a light source through the arc-shaped guide structure, and compared with the prior art, under the conditions of the same size of a lamp body, the same beam angle and the same adjusting angle, the light loss is reduced by more than 75% in the adjustment process compared with that of the prior art; the structure of an adjusting device is simple, and parts are easy to manufacture; and due to the fact that the light loss is greatly reduced after adjustment, the low-light-loss tube lamp adjusting structure is of great significance for achieving multiple purposes of one lamp, reducing the models of lamps, reducing the number of molds to be manufactured, and saving social resources.

A hybrid reflector system for use in lighting application. The system is particularly well-suited for use with solid state light sources, such as light emitting diodes (LEDs). Embodiments of the system include a bowl-shaped outer reflector and an intermediate reflector disposed inside the bowl and proximate to the light source. The reflectors are arranged to interact with the light emitted from the source to produce a beam having desired characteristics. Some of the light passes through the system without interacting with any of the reflector surfaces. This uncontrolled light, which is already emitting in a useful direction, does not experience optical loss normally associated with one or more reflective bounces. Some of the light emanating from the source at higher angles that would not be emitted within the desired beam angle is reflected by one or both of the reflectors, redirecting that light to achieve a tighter beam.

Radiation beam parameters are determined by manipulating a tool about a patient in order to determine a desired beam entry point and/or beam angle. In certain embodiments, a visual representation of the beam may be displayed along with images of internal and external anatomical features of the patient, and used to determine couch and/or gantry manipulation parameters to move the patient into a desired position with respect to a treatment delivery device.

A steerable antenna comprising an array of T-shaped slots. The location of the slots is moved to define an array of ring- or spiral-patterned phase constant regions. Distortions or contractions of the pattern occur by repositioning some or all of the slots forming the array. The antenna also comprises an intermediate insulating layer and a lower plate. The insulating layer is formed by a deformable dielectric medium. Deformation of the dielectric medium allows the beam angle to be altered.

A two-way terrestrial antenna, employing electrical down tilt and azimuth beam adjustment capability is disclosed. Such antenna configuration allows for a variable antenna coverage footprint within designated coverage sector. To compensate for installation support structure variations the two-way antenna employs a positional sensor that can provide feedback to BTS or automatically compensate azimuth and tilt beam angles so as to provide uniform sector coverage. In particular by monitoring tri-vector gravitational inclinometer and earth magnetic field sensors, and determining correction factors for antenna tilt and azimuth beam adjustments, uniform or compensated sector coverage is provided.

An ultrasonic transducer utilizes a unique forward acoustic transmission line comprised of a composite structure partially consisting of a portion of a continuous smooth sheet of material, such as an automobile bumper, from which the acoustic beam is emitted. This makes it invisible to sight, thus allowing for an improved object detection system in which the sensors cannot be seen, so that they do not interfere with the smooth lines that were designed into the surface of the object or vehicle onto which they are mounted. This is a significant improvement for applications where the look and style of the surface of the platform is important, such as in automotive park assist systems.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.