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Radiation receiver device

A receiver, equipment technology, applied in the field of IR communication

Active Publication Date: 2016-07-27
OSRAM OPTO SEMICONDUCTORS GMBH & CO OHG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this reception concept explicitly presupposes a known modulation frequency or a known modulation format and is only suitable for this particular application

Method used

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Examples

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Embodiment Construction

[0042] exist Figure 1A with 1B An embodiment of a radiation receiver device is schematically shown in Figure 1B The side view shown in FIG. 1 shows a top view of the radiation entrance area 10 of the radiation receiver device 1 .

[0043] The radiation receiver device 1 has a radiation receiver 2 with an active region 20 provided for receiving radiation in the near infrared. The radiation receiver device is provided, for example, to receive radiation in a spectral range between 820 nm and 980 nm, for example 950 nm, limit values ​​included. The active region 20 includes, for example, a compound semiconductor material of arsenide. Alternatively, the radiation receiver can also be based on silicon. For example, the radiation receiver is designed as a photodiode, a phototransistor or as an application-specific integrated circuit (ASIC) with a photosensitive region.

[0044] The radiation receiver device 1 also includes an optical element 3 with an optical axis 30 . The opt...

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PUM

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Abstract

The invention relates to a radiation receiver device (1) comprising a radiation receiver (2) and a radiation entrance surface (10), wherein the radiation receiver has an active region for detecting radiation having a target wavelength in the near infrared range. Between the radiation entrance surface and the radiation receiver, an optical element is arranged. An optical axis of the optical element extends through the radiation receiver. The optical element is formed and arranged relative to the radiation receiver such that radiation incident on the radiation entrance surface at an angle of greater than or equal to 40 DEG to the optical axis, is incident on the radiation receiver at no more than10%. Between the radiation receiver and the radiation entrance surface, a visibility filter is formed.

Description

technical field [0001] The invention relates to a radiation receiver device, in particular for IR communication (infrared communication). Background technique [0002] For free-beam communication by means of infrared radiation, a wide-band radiation receiver with an electrical bandwidth in the range of approximately 30 kHz to approximately 500 kHz is desired, which is capable of detecting optical pulses with a pulse width greater than or equal to 1 μs. However, it has been shown that such receivers generally only operate reliably over a small range of less than one meter. At greater distances, ambient light can cause false signals. This relates in particular to the ambient light generated by fluorescent lamps based on the gas discharge principle. Greater ranges can be achieved with electrically narrowband radiation receivers. However, this reception concept explicitly presupposes a known modulation frequency or a known modulation format and is only suitable for this parti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/114G08C23/04H04B10/67
CPCH04B10/675H04B10/1141H04B10/116H04B10/671H04B10/672
Inventor 胡贝特·哈尔布里特马库斯·莱尔默
Owner OSRAM OPTO SEMICONDUCTORS GMBH & CO OHG