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Converter, laser remote excited phosphor (larp) system, searchlight and method

A remote excitation, fluorescent powder technology, applied in the field of searchlights, can solve problems such as unavailability, shortened service life of the converter, and damage to the observer's eyes

Active Publication Date: 2021-11-19
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such defects, for example due to thermal stresses in the substrate and / or in the luminescent material and the resulting cracks or cracks can severely shorten the service life of the converter or render it unusable, due to discoloration of the silicone adhesive layer. Reduced optical power, as well as safety-related aspects due to possible detachment or detachment of the luminescent material from the substrate, since then a large amount of tightly bundled, unconverted excitation radiation can leave the LARP system (damage to the observer's eyes)

Method used

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  • Converter, laser remote excited phosphor (larp) system, searchlight and method
  • Converter, laser remote excited phosphor (larp) system, searchlight and method
  • Converter, laser remote excited phosphor (larp) system, searchlight and method

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Embodiment Construction

[0031] Figures 1a to 1d The individual method steps of the direct bonding process of phosphor and substrate are shown.

[0032] Figure 1aTwo components to be bonded are shown, namely a substrate 1 and a phosphor 2 , which are here in particular formed in the form of a disk and have approximately the same thickness, each with a contact surface 4 to be bonded. , 6 are oriented towards each other. The contact surfaces 4 , 6 to be bonded have the same size and shape. Here, the substrate 1 is arranged on top, an inverted arrangement is possible. The substrate 1 is preferably a sapphire platelet with a thickness of about 0.5 mm. The luminescent material or platelets of luminescent material have a thickness of 100 µm to 400 µm.

[0033] exist Figure 1b shows how substrate 1 and phosphor 2 are separated by spacers 8 and shows the entire arrangement on a slowly rotating rotary element in the form of a disk 10 . The area between the substrate 1 and the phosphor 2 , ie the surfa...

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Abstract

The present invention discloses a converter for a Laser Remotely Excited Phosphor (LARP) system having a substrate and a luminescent material for converting excitation radiation. Advantageously, the phosphor / substrate is fixed on the substrate / luminescent material by direct bonding. The invention also discloses a method by means of which the luminescent material and the substrate are bonded together.

Description

technical field [0001] The invention is based on a Laser Remotely Excited Phosphor (LARP) system and a searchlight with such a system. Furthermore, the invention relates to a converter in a LARP system, and a method for manufacturing the converter. Background technique [0002] In LARP technology, the conversion element or converter arranged at a distance from the radiation source is irradiated by means of excitation radiation, in particular an excitation beam (pump beam, pump laser beam), in particular by means of excitation of a laser diode. A beam is emitted for irradiation, the conversion element or converter having or consisting of a luminescent material. The excitation radiation of the excitation beam is at least partially absorbed by the phosphor and at least partially converted into converted radiation whose wavelength and thus spectral properties and / or color are determined by the conversion properties of the phosphor. Thus, for example, the blue excitation radiat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V9/08F21S43/00F21W107/10
CPCF21V9/08F21S43/00F21W2107/10F21S41/16F21S41/176F21S41/19F21V9/30F21K9/64F21S41/285
Inventor 帕特里克·克舍尔
Owner OSRAM GMBH