摘要:
The invention relates to a device (1) for imaging an interior of a turbid medium (45) comprising: a) a measurement volume (15) for receiving the turbid medium (45); b) a light source (5) for irradiating the turbid medium (45); c) a photodetector unit (10) for detecting light emanating from exit positions (60) located on a boundary of the measurement volume (15) as a result of >irradiating the turbid medium (45). The device (1) is adapted to collect light from spatially distinct beams of light emanating from a single exit position (60). The single exit position (60) may, for instance, come in the form of an optical channel (25b) or it may simply be an area of skin tissue from which light emanates. In one embodiment of the device (1) according to the invention multiple optical light guides (55) are optically coupled to the single exit position (60).
摘要:
A multi-layer mirror includes a multi-layer stack. The multi-layer stack includes a plurality of alternating layers with a multi-layer stack top layer and a spectral filter top layer arranged on the multi-layer stack. The spectral filter top layer includes a first spectral purity enhancement layer that includes a first material m1 and has a first layer thickness d1, an intermediate layer that includes a second material m2 and has a second layer thickness d2. The intermediate layer is arranged on the multi-layer stack top layer. The first material is selected from SiN, Si3N4, SiO2, ZnS, Te, diamond, CsI, Se, SiC, amorphous carbon, MgF2, CaF2, TiO2, Ge, PbF2, ZrO2, BaTiO3, LiF or NaF. The second material includes a material different from the first material, and d1+d2 has a thickness between 1.5 and 40 nm.
摘要:
Disclosed is a method and a device for optical imaging of a turbid medium. This method comprises a reference measurement of reference intensities of light emanating from the turbid medium at a reference blood oxygen saturation (SaO2) in the turbid medium and a reference imaging step for reconstructing a reference image of the turbid medium from the measured reference intensities. Furthermore the method comprises a contrast measurement of the contrast intensity of the light emanating from the turbid medium at a contrast blood oxygen saturation (SaO2) level in the turbid medium and a contrast imaging step for reconstructing a contrast image of the turbid medium from the measured contrast intensities. A comparison is made between the contrast image to the reference image of the turbid medium.
摘要:
The invention relates to a method and device (1) for imaging an interior of a turbid medium (55). A turbid medium (55) inside a measurement volume (15) is irradiated from a plurality of source positions (25a) with light from a light source (5), and light emanating from the measurement volume (15) is detected from a plurality of detection positions (25b). An image of the interior of the turbid medium (55) is reconstructed from the detected light. In both the method and the device (1), detector signals can be amplified for each source position-detection position pair by a multi-gain amplification unit comprising an amplifier circuit (60). The amplification factor is selected from a number of possible amplification factors based on detected signal strength in the prior art. According to the invention, however, the method and device are adapted such that the amplification factor is selected for at least one source position-detection position pair on the basis of an estimate of expected electrical signal strength.
摘要:
The invention relates to a device (1) for imaging an interior of a turbid medium (25). The device (1) may be used to accommodate a turbid medium (25) inside a measurement volume (20) and irradiate the turbid medium (25) with light from a light source (5), after which light emanating from the measurement volume (20) is detected and used to determine an image of the interior of the turbid medium (25). The device (1) is adapted such that additional means are introduced for irradiating the turbid medium (25) with light causing fluorescent emission in a contrast agent present in the turbid medium (25), for detecting the fluorescent emission in at least two spectral regions, and for calculating an image reconstruction for the at least two spectral regions detected. By detecting the fluorescent emission spectroscopically, that is as a function of wavelength, information can be obtained from which the concentration of a predetermined component present inside the turbid medium can be determined.
摘要:
A system for reading an information carrier having a data layer (101) on which is stored a data set. A probe array generating means (104) generates an array of light spots (102) which is applied to the data layer (101). The resultant output light beams are representative of the binary value of data stored in the data layer (101). Macro-cell scanning is effected in a single dimension by moving the array of light spots (102) relative to the data layer (101) along a path (A,B) which is non-parallel to the axes of the matrix defining the probe array. One-dimensional scanning results in a less complex system.
摘要:
A lithographic apparatus is disclosed. The apparatus includes an illumination system that provides a beam of radiation, and a support structure that supports a patterning structure. The patterning structure is configured to impart the beam of radiation with a pattern in its cross-section. The apparatus also includes a substrate support that supports a substrate, a projection system that projects the patterned beam onto a target portion of the substrate, and a debris-mitigation system that mitigates debris particles which are formed during use of at least a part of the lithographic apparatus. The debris-mitigation system is arranged to apply a magnetic field so that at least charged debris particles are mitigated.
摘要:
A grazing incidence mirror includes a mirror substrate and a mirror surface layer, the mirror surface layer including a first layer and a second layer, the first layer being positioned between the mirror substrate and the second layer. The first layer includes a material selected from the group of Mo, Nb and combinations thereof, and the second layer includes a material selected from the group of B, C, B4C, SiC and combinations thereof. Such a grazing incidence mirror can be used in lithographic apparatus and in device manufacturing methods and provides a reflectivity that may be larger than state of the art grazing incidence mirrors based on Ru.
摘要:
Particles emitted by a radiation source, and moving from the radiation source towards a processing system for processing the radiation from the radiation source, are filtered out of radiation propagating through a predetermined cross section of the radiation as emitted by the radiation source by a filter system. The filter system includes a plurality of foils and a transporter for transporting the foils along a trajectory which extends within the beam so that the foils intercept the particles within the beam. The transporter is arranged to transport the foils by a substantially translatory movement of the foils along at least a part of the trajectory.
摘要:
A lithographic projection apparatus is provided. The apparatus includes a radiation system for providing a beam of radiation, and a support for supporting a patterning device. The patterning device serves to pattern the beam of radiation according to a desired pattern. The apparatus also includes a substrate table for holding a substrate, a projection system for projecting the patterned beam of radiation onto a target portion of the substrate, and a particle supply unit for supplying getter particles into the beam of radiation in order to act as a getter for contamination particles in the beam of radiation. The getter particles have a diameter of at least about 1 nm.