DE102007011592A1 - Device for increasing light in light collector for optical data, signal transmission focuses light in collector while simultaneously shaping reception characteristic in thin transparent medium layer or directly deflecting light to detector - Google Patents

Abstract

The device has a light collector (2) arranged before a respective detector (4) so as to collect the incident light (1), focusing it with lens technology while simultaneously shaping the reception characteristic via a thin layer of transparent medium (3) or directly deflecting the light onto the detector.

Description

The The invention relates to a light collector with light detectors in particular with PIN diodes preferably for a laser detector.

The Light intensity, as with laser detectors needed to fulfill their function, must hit the detectors in sufficient quantity as these otherwise can not be detected. At the same time should a uniform coverage of the room possible be what with the property of common detectors, like PIN diodes, can not be easily achieved.

A detector device for direction-dependent detection of laser beams describes the DE 38 18 229 C1 , This has a plurality of individual optics, which detect a predetermined total space angle. Each optic consists of a light guide and a light concentrator associated with this light guide. The shape of this concentrator is substantially funnel-shaped with a rotationally symmetrical shape tapering towards the end of the light guide.

An optical sighting device with Lichwellenleiter-collector is in the DE 698 34 304 T2 ( EP 0 918 243 B1 ) disclosed. This collector has the task of directing ambient light radially inwardly over a selected length of the conductor, whereby a desired amount of light energy can be collected from the ambient light.

Light collectors or light guides are also known from the automotive industry. That's how it describes DE 202 20 290 U1 a light guide with an S-shaped bulbous shape, is bundled by a light emanating from a light source and guided within the light guide.

The Invention sets itself the task, another possibility show, with which the required light intensity for a secure detection, especially for one Laser detector can be created.

Solved The object is achieved by the features of claim 1. Advantageous Embodiments are shown in the subclaims.

Of the Invention is based on the idea, the light detectors with concentrators combine in a way that both the collecting effect and at the same time a shaping of the reception characteristic, in particular achieved in combination with multiple light detectors. To becomes a simple but very effective light collector in the Integrated detection system. This is designed and installed that incident light, such as laser light, from the desired solid angle collected and concentrated focused on the detector surface becomes.

Of the Intended Lichtsammler consists of an optic which the incident light reflected on the outer surfaces, that this over a thin layer of a transparent Medium or directly to the detector surface, for example a PIN diode.

With The invention can be easily manufactured optics with detectors for light collection, filtering and homogenisation the receiving characteristic can be realized.

With Such a light collector may include laser detectors be equipped. Furthermore, it allows the equipment of optical receivers for data and signal transmission, their orientation to channels undefined or not exactly possible is.

Based an exemplary embodiment with drawing, the invention be explained in more detail. It shows:

1 the construction of a single light collector,

2 one of the possible combinations, here with four light collectors with detectors in one plane and another light collector perpendicular to it.

1 shows a light collector 2 for collecting and relaying incident light 1 (with a laser detector, that of a laser) on a detector 4 directly or over a thin layer of a transparent transition medium 3 which is between light collector 2 and detector 4 , For example, PIN diodes, is involved.

2 shows a further variant for collecting and forwarding incident light 1 , here are four light collectors 2 with their detectors 4 in one plane and perpendicular to it another light collector 5 attached or arranged. This light collector 5 is optically connected to a detector not shown in the same way as the other and in turn gives the collected light intensity to this further detector.

Single or multiple transition surfaces of the light collector 2 . 5 If required, they can be provided with a bandpass or edge filter (not shown).

The light collector 2 . 5 may be cup-shaped or be shaped as Fresnel lens. The shape and refractive index of the light collector 2 . 5 is definitely to choose that the incident light 1 collected from a desired solid angle and on the surface of each detector 4 is steered.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3818229 C1 [0003]
• - DE 69834304 T2 [0004]
• EP 0918243 B1 [0004]
• - DE 20220290 U1 [0005]

Claims (6)

Device for increasing the light intensity of incident light also for optical data and / or signal transmission, characterized in that a light collector ( 2 . 5 ) in front of a respective detector ( 4 ) is arranged such that the incident light ( 1 ) and this bundled by the technique of collecting while forming the receiving characteristic over a thin layer of a transparent medium ( 3 ) or directly on the detector ( 4 ) is directed. Apparatus according to claim 1, characterized in that the shape and the refractive index of the light collector ( 2 . 5 ) is to be chosen so that the incident light ( 1 ) from a desired solid angle and on the surface of the detector ( 4 ) is directed. Device according to claim 2, characterized in that the light collector ( 2 . 5 ) cup-shaped and / or shaped as a Fresnel lens. Device according to one of claims 1 to 3, characterized in that one or more transition surfaces of the light collector ( 2 . 5 ) can be provided if necessary with a bandpass or edge filter. Device according to one of claims 1 to 4 for use in a laser detector. Apparatus for use in an optical receiver for data and signal transmission, their alignment to the Sender is undefined or not exactly possible.