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Optical wireless power supply system

An optical wireless, laser beam technology used in laser-based transmission systems to transmit optical power to mobile electronic devices in a home environment, which can solve problems such as reducing the cost and size of optical systems

Active Publication Date: 2022-06-03
WI CHARGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] Another limitation of prior art systems is that they typically use lasers with good beam quality (low m2 values) together with large optics to achieve high efficiency (e.g. US 6,407,535 B1 and US 6,534,705 B2 use wide laser beams aperture), while US 5,260,639 uses a wavelength of 0.8um to allow small optics, reducing the cost and size of the optical system

Method used

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Embodiment Construction

[0183] Different mirror mechanisms for resonant cavities have been used, with special

[0186] Three different approaches can be taken for the gain medium.

[0188] In a DPSS design, the gain medium can be an Nd-doped YAG crystal, although YVO

[0190] Alternatively, a semiconductor-based design may be suggested. can be lasered by changing the semiconductor used

[0192] During operation, the gain medium generates heat and should be cooled to prevent wavelength drift and loss of efficiency. If appropriate

[0193] Laser gain media are typically configured to operate at temperatures below 150 degrees Celsius. If its temperature exceeds a certain

[0195] Second, if such thermal attachment methods are used, the soldering of the gain medium may be damaged.

[0196] Third, thermal aberrations can occur, which can lead to beam loss.

[0198] For these reasons, the gain medium must in particular be attached thermally to the cooling system. Typical gain medium

[0201] If the cooling ...

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Abstract

A system for optical power transfer to a receiver incorporating safety features, comprising: an optical resonant cavity with end reflectors and a gain medium, a driver supplying power to the gain medium and controlling its small signal gain, beam steering A device and a controller controlling at least a beam steering device and a driver. The controller defines said optoelectronic power by outputting a command to change at least some of the small signal gain of the gain medium, the radiant brightness of the beam, the power supplied by the driver, the scanning speed or scanning direction and position of the beam steering device, or recording The scanning attitude of the position of the transducer, thus responding to the security risks that arise in the system. The controller can also ensure high overall radiation efficiency and can warn of transmission power not being received by the intended receiver.

Description

Optical wireless power supply system technical field [0001] The present invention relates to the field of wireless power transfer, and is particularly applicable to laser-based transmission systems for use in home environments transmit optical power to mobile electronic devices. Background technique [0002] There has long been a need to transmit power to remote locations without the need for a physical wired connection. This need is near Decades have become important with the proliferation of portable electronic devices that operate from batteries that require periodic recharging. These shifts Mobile applications include mobile phones, laptops, cars, toys, wearables and hearing aids. Currently, the existing technology The capacity of the battery and the intensive use of the smartphone's typical battery application means that the battery may need to be charged more than once a day, The need for wireless battery recharging over long distances is important. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/80
CPCH02J50/30H02J7/35H02S50/10H02J7/00036H04B10/807Y02E10/50H04B10/806H04B10/85H02J50/60H01S3/042H01S3/09H01S3/1611
Inventor L·戈朗A·斯利波伊O·纳米亚斯R·萨基O·阿尔珀特O·R·莫尔
Owner WI CHARGE