8 results about "Secondary radiation" patented technology

This invention provides a foldable device and a laptop computer. The radiation enhancement device includes: a hinge, a top cover, a base, an antenna, and a radiating slot area. The top cover and the base are rotatably connected via the hinge. A connection gap exists between the hinge and the base. The antenna is disposed at the connection between the hinge and the top cover. A radiating slot area is provided on the base at the antenna projection position. The radiating slot area includes multiple radiating slots, which are used to collect and re-radiate the energy emitted by the antenna. The radiating slots are connected to the connection gap to form a secondary radiation system, thereby achieving the collection and transfer of radiated energy, effectively reducing mutual interference between the two antennas, and improving isolation. Furthermore, this embodiment also provides a virtual feed point at the edge of the connecting slot within the radiating slot area. The virtual feed point works collaboratively with the radiating slot area to optimize antenna performance and improve radiation efficiency.

The invention relates to a method for generating and amplifying laser pulses (12, 14) by means of an optical amplifier (32), the optical amplifier (32) comprising a laser-active solid body (34) for amplifying the laser pulses (12, 14). The method comprises: generating a laser pulse of a first type (12); generating a laser pulse of a second type (14); generating a population inversion in the laser-active solid body (34); and amplifying the laser pulse of the first type (12) and the laser pulse of the second type (14) by means of the optical amplifier (32) by causing the laser pulse of the first type (12) and the laser pulse of the second type (14) to pass through the laser-active solid body (34) while the laser-active solid body (34) is in the state of population inversion. The laser pulse of the first type (12) and the laser pulse of the second type (14) differ from one another in terms of their wavelength.

An optoelectronic device is proposed. According to one embodiment, the optoelectronic device (1) includes: a semiconductor chip (3) configured to emit primary radiation (34); and a conversion element (4) configured to convert the primary radiation (34) into secondary radiation (42), wherein the aspect ratio of the height (x) of the conversion element (4) to the edge length (z) of the emitting surface (11) of the optoelectronic device (1) is at most 1, and wherein the optoelectronic device (1) is configured to improve the conversion efficiency of the conversion element (4). In particular, the semiconductor chip (3) is a mini-LED or micro-LED. Furthermore, an optoelectronic apparatus is proposed.

A method for artificially illuminating a plant to promote plant development (100), the method comprising a step of emitting radiation towards the plant (100) during a period called the photoperiod, the emission step comprising at least the following two distinct phases: a) a red phase representing at least 10% of the photoperiod, during which only primary radiation is artificially emitted, the primary radiation being red; b) a multispectral phase, during which secondary radiation is artificially emitted, the secondary radiation comprising at least two radiations from among blue radiation, green radiation, red radiation, and far-red radiation. Figure for the abstract: Figure 1.

This invention belongs to the field of electromagnetic numerical methods, specifically providing a domain decomposition equivalent source-high frequency coupling solution method for electromagnetic radiation problems on an open-field university platform. First, in the modeling stage, the complex multi-scale model is modeled separately. A virtual equivalent sphere is constructed for the antenna array, and the electromagnetic field on the sphere is calculated using a domain decomposition algorithm. A near-field equivalent source file containing three-dimensional field components in spherical coordinates is exported, and a spherical near-field equivalent source reflecting the mutual coupling characteristics of the array is constructed based on the equivalence principle. Then, the equivalent source file is imported into the physical optics simulation area of ​​the open-field university platform, and the near-field incident electromagnetic field generated on the platform surface is calculated. The induced current on the platform surface is then quickly solved using physical optics. Finally, the direct radiation field of the equivalent source and the secondary radiation field of the induced current on the platform are superimposed in the far-field vector, ultimately achieving a fast and high-precision electromagnetic simulation of the radiation characteristics of the antenna array on the open-field university platform.

A method for artificially lighting a plant in order to promote growth of the plant (100), the method comprising a step of emitting radiation towards the plant (100) during a period referred to as the photoperiod, the emission step comprising at least the following two distinct phases: a) a red phase representing at least 10% of the photoperiod, during which only a primary type of radiation is emitted artificially, the primary radiation type being red; b) a multispectral phase, during which secondary types of radiation are emitted artificially, the secondary radiation types comprising at least two radiation types out of blue radiation, green radiation, red radiation and far-red radiation.

This disclosure provides a beam delivery method, apparatus, electronic device, and medium. The method includes: dividing the cross-sectional shape of a target area into several equally spaced scanning points; delivering the same dose of particles to each scanning point based on a point-by-point active position delivery method, forming a uniform beam field distributed in a plane perpendicular to the beam direction. The shape of the uniformly distributed beam field is consistent with the shape of the target area and covers the entire target area. The depth, Bragg peak broadening, and penumbra of the uniformly distributed beam field are adjusted using a beam modulation module, and the adjusted uniformly distributed beam is delivered to the target area. This method reduces beam waste, increases beam utilization, shortens treatment time, reduces secondary radiation and induced radioactivity, and effectively reduces positional and dose deviations caused by organ movement.

This application relates to a high-frequency relay, including an electromagnetic part comprising multiple metal components; a contact portion disposed on one side of the electromagnetic part along a first direction, the contact portion including a moving spring assembly and a stationary spring; a shielding cover disposed on the side of the stationary spring facing the electromagnetic part; at least a portion of the stationary spring is located inside the shielding cover, and at least a portion of the moving spring assembly passes through the shielding cover; wherein the shielding cover has a grounding terminal; one end of a conductive connector is electrically connected to at least one of the multiple metal components, and the other end is electrically connected to the shielding cover and grounded. By providing a conductive connector connecting the metal components of the electromagnetic part and the shielding cover, a grounding path is provided for the metal components in the electromagnetic part, thereby eliminating parasitic coupling and secondary radiation effects caused by the proximity of the metal components in the electromagnetic part to the high-frequency operating contact portion, thus reducing crosstalk and interference coupling of the electromagnetic part to the high-frequency signal of the contact portion, and ensuring the integrity and transmission efficiency of the high-frequency signal.