Abstract: An illumination device includes a light source, a light conversion element with a front side, an optical element, and first and second optical interfaces, wherein (a) an outer surface of the optical element includes a first surface area extending obliquely to the front side, so that secondary light can be decoupled at the second optical interface from the optical element into the surrounding medium in a direction which has a smaller angle in relation to the normal of the front side than if the first surface area extended in parallel to the front side of the light conversion element, and/or (b) the outer surface includes a second surface area extending obliquely to the front side of the light conversion element, so that secondary light can be reflected at the second optical interface into the optical element with total reflection in a direction toward the normal of the front side.

Abstract: A rotary pump, preferably a vacuum pump, featuring: a delivery space including an inlet on a low-pressure side and an outlet on a high-pressure side of the pump; a rotor which is arranged in the delivery space and delivers a fluid from the inlet into the delivery space to the outlet from the delivery space; at least one housing part which delineates the delivery space at least axially; and a drive shaft which is connected in drive terms to the rotor; including at least one sealing element which is connected, secured against shifting and/or rotating, to the drive shaft and/or rotor and forms a radial sealing gap with the housing part.

Abstract: The invention relates to a method for carrying out a two-factor authentication between a client and a relying party, wherein, as the second factor, a data carrier is employed which carries out a communication with a token server.

Abstract: A method is provided for carrying out a cryptographically secured authentication which complies with the Universal Authentication Framework (UAF) of the FIDO Alliance. It is thus possible to employ an existing infrastructure of the FIDO Alliance and the method can be embedded into the infrastructure using standard interfaces.

Abstract: A method for protection against a relay attack on a system is composed of at least a first and a second communication device. Data are transmitted wirelessly between the first and the second communication device. The first communication device ascertains a first spectrum of all wirelessly transmitted signals to be received at the location of the first communication device within a frequency band. The second communication device likewise ascertains a second spectrum of all wirelessly transmitted signals to be received at the location of the second communication device within the frequency band. The frequency band is limited by a minimum and a maximum frequency. The second communication device transmits the second spectrum to the first communication device. The first communication device compares the first spectrum with the second spectrum in order to ascertain whether the second communication device is located at the location of the first communication device.

Abstract: A method for protection against a relay attack on a system is composed of at least a first and a second communication device. Data are transmitted wirelessly between the first and the second communication device. The first communication device ascertains a first spectrum of all wirelessly transmitted signals to be received at the location of the first communication device within a frequency band. The second communication device likewise ascertains a second spectrum of all wirelessly transmitted signals to be received at the location of the second communication device within the frequency band. The frequency band is limited by a minimum and a maximum frequency. The second communication device transmits the second spectrum to the first communication device. The first communication device compares the first spectrum with the second spectrum in order to ascertain whether the second communication device is located at the location of the first communication device.

Abstract: The invention provides a system for encryptedly storing product data of a product having an attached tag centrally on a product data server, and reading out the centrally stored product data by production stations which are to process the product. The product data are encrypted with a document key which in turn is encrypted with a public key of the tag. The tag contains access information for the centrally stored product data. When a production station accesses product data on the product data server, the tag carries out a re-encryption of the document key from the key system of the tag to that of the accessing production station.

Abstract: A method is provided for carrying out a cryptographically secured authentication which complies with the Universal Authentication Framework (UAF) of the FIDO Alliance. It is thus possible to employ an existing infrastructure of the FIDO Alliance and the method can be embedded into the infrastructure using standard interfaces.

Abstract: The invention relates to a method for carrying out a two-factor authentication between a client and a relying party, wherein, as the second factor, a data carrier is employed which carries out a communication with a token server.

Abstract: A pump which exhibits an adjustable delivery volume, the pump including (a) a pump housing comprising a delivery chamber; (b) a delivery rotor which can be rotated about a rotary axis within the delivery chamber, for delivering the fluid; (c) an adjusting device, including: (c1) an adjusting member which can be adjusted in the pump housing in order to adjust the delivery volume of the pump; (c2) a first setting chamber for generating a first setting pressure for adjusting the adjusting member; (c3) and a second setting chamber for generating a second setting pressure for adjusting the adjusting member; (d) a fluidically operable valve for adjusting the setting pressure of the first setting chamber; (e) and an electromagnetic valve, comprising: a pressure port for a setting fluid which is diverted from the high-pressure side; and a relief port for the setting fluid.

Abstract: A rotary pump, preferably a vacuum. pump, featuring: a delivery space including an inlet on a low-pressure side and an outlet on a high-pressure side of the pump; a rotor which is arranged in the delivery space and delivers a fluid from the inlet into the delivery space to the outlet from the delivery space; at least one housing part which delineates the delivery space at least axially; and a drive shaft which is connected in drive terms to the rotor; including at least one sealing element which is connected, secured against shifting and/or rotating, to the drive shaft and/or rotor and forms a radial sealing gap with the housing part.

Abstract: A method for sealing and checking a product for manipulation with a seal and to a corresponding seal, wherein the seal comprises an antenna, a chip, a measuring element, and a measurement device. For sealing and checking the product for manipulation, a step of arranging the seal at the product to be sealed is carried out, wherein the product is mechanically sealed. The seal receives a check query by means of contactless data transmission from a read-write device, determines the physical property of the measuring element as a first measurement value by the seal, prepares a response to the query by the chip, sends by means of contactless transmission the response to the read-write device, the response of the chip relating to the first measurement value, and compares the first measurement value with a reference value.

Abstract: A method for sealing and checking a product for manipulation with a seal and to a corresponding seal, wherein the seal comprises an antenna, a chip, a measuring element, and a measurement device. For sealing and checking the product for manipulation, a step of arranging the seal at the product to be sealed is carried out, wherein the product is mechanically sealed. The seal receives a check query by means of contactless data transmission from a read-write device, determines the physical property of the measuring element as a first measurement value by the seal, prepares a response to the query by the chip, sends by means of contactless transmission the response to the read-write device, the response of the chip relating to the first measurement value, and compares the first measurement value with a reference value.

Abstract: The invention provides a system for encryptedly storing product data of a product having an attached tag centrally on a product data server, and reading out the centrally stored product data by production stations which are to process the product. The product data are encrypted with a document key which in turn is encrypted with a public key of the tag. The tag contains access information for the centrally stored product data. When a production station accesses product data on the product data server, the tag carries out a re-encryption of the document key from the key system of the tag to that of the accessing production station.

Abstract: A pump which exhibits an adjustable delivery volume, the pump including (a) a pump housing comprising a delivery chamber; (b) a delivery rotor which can be rotated about a rotary axis within the delivery chamber, for delivering the fluid; (c) an adjusting device, including: (c1) an adjusting member which can be adjusted in the pump housing in order to adjust the delivery volume of the pump; (c2) a first setting chamber for generating a first setting pressure for adjusting the adjusting member; (c3) and a second setting chamber for generating a second setting pressure for adjusting the adjusting member; (d) a fluidically operable valve for adjusting the setting pressure of the first setting chamber; (e) and an electromagnetic valve, comprising: a pressure port for a setting fluid which is diverted from the high-pressure side; and a relief port for the setting fluid.