摘要:
In a system and a method for examining an object containing a fluid liquid, the object is illuminated with measuring light and images are temporarily shortly subsequently recorded. The images are evaluated per pixel to determine perfusion data from a high frequency portion above 1 kHz and to determine further information about properties of the object from a low frequency portion below 100 Hz, such as a degree of oxygenation of hemoglobin, a concentration of hemoglobin or a concentration of ICG. This information determined by evaluation is displayed in a form of an image in superposition with a white light image of the object.
摘要:
In a system and a method for examining an object containing a fluid liquid, the object is illuminated with measuring light and images are temporarily shortly subsequently recorded. The images are evaluated per pixel to determine perfusion data from a high frequency portion above 1 kHz and to determine further information about properties of the object from a low frequency portion below 100 Hz, such as a degree of oxygenation of hemoglobin, a concentration of hemoglobin or a concentration of ICG. This information determined by evaluation is displayed in a form of an image in superposition with a white light image of the object.
摘要:
A method and an apparatus for displaying a part of a brain of a patient is provided. Laser Doppler images are acquired before and after a stimulation. The laser Doppler images comprise information about a blood motion or about a perfusion at the acquired part. Then, the blood motion images acquired before and after the stimulation are compared to identify areas in the brain of the patient which are related to the stimulation. The identified areas are displayed in dependence of topography data representing a topography of the brain.
摘要:
A method and an apparatus for displaying a part of a brain of a patient is described. Laser-Doppler-images are acquired before and after a stimulation. The laser-Doppler-images include information about a blood motion or about a perfusion at the acquired part. Then, the blood motion images acquired before and after the stimulation are compared to identify areas in the brain of the patient which are related to the stimulation.
摘要:
An adjustable pinhole, in particular for a beam path for illumination and/or detection in a laser-scanning microscope. The pinhole consists of at least two planar basic modules, which have frame-like joints, on which at least one sharp edge is arranged in a displaceable manner in one direction, whereby the basic component advantageously contains at least one integrated, preferably optical or electromagnetic positioning element. A device is provided at the sharp edge, or connected with it, for preferably optical or electromagnetic detection of the position, and is provided, advantageously, with two asymmetric apertures, with mutually opposite orientation, for optical detection of the position, whereby in front of or behind the apertures, a slit is provided, oriented preferably at a right angle to the direction of displacement, and the quantity of light passing through the slit is detected separately for each aperture.
摘要:
An adjustable pinhole, in particular for a beam path for illumination and/or detection in a laser-scanning microscope. The pinhole consists of at least two planar basic modules, which have frame-like joints, on which at least one blade is arranged in a displaceable manner in one direction, whereby the basic component advantageously contains at least one integrated, preferably optical or electromagnetic actuator. A device is provided at the blade, or connected with it, for preferably optical or electromagnetic detection of the position, and is provided, advantageously, with two asymmetric apertures, with mutually opposite orientation, for optical detection of the position, whereby in front of or behind the apertures, a slit is provided, oriented preferably at a right angle to the direction of displacement, and the quantity of light passing through the slit is detected separately for each aperture.
摘要:
An infrared photodetector containing a region of semiconductor quantum dots (1), n type doped in the barrier region (2), and sandwiched between respective layers of semiconductors of n type (3) and p type (4). When infrared photons (5) are absorbed, they create electronic transitions (6) from the confined states in the dots (7) to the conduction band (8). This causes the appearance of a voltage between device p (9) and n (10) contacts or the production of an electrical current. In either way, the detection of the infrared light is possible. A low band-pass filter (12) prevents high energy photons (13) from entering the device and causing electronic transitions (14) from the valence (15) band to the conduction band (8).
摘要:
A method includes accessing a first non-volatile memory associated with a compressor using a processor associated with at least one of a second non-volatile memory and an operating memory. A method further includes storing compressor data from at least one of the second non-volatile memory and the operating memory in the first non-volatile memory and accessing the compressor data in the first non-volatile memory to evaluate compressor performance.
摘要:
A compressor memory system includes a compressor with a first non-volatile memory connected to a module. The module has a processor and a second non-volatile memory. The first non-volatile memory is associated with the compressor. The module is selectively attached to the compressor and the processor is configured to access the first and second non-volatile memories.
摘要:
The invention provides a new PAR 38 lamp/reflector unit comprising a halogen lamp of suitable power, i.e. 100 watts/120 volts, coated with infrared film to reflect infrared energy produced by the halogen lamp back to the filament, making it more efficient; that meets and preferably exceeds the minimum EPACT efficacy standards, that exhibits a median life of at least about 3000 hours, while giving light output greater than 90% from the original value at about 1750 hours. Unit comprises a double-ended electric lamp (10) arranged in a reflector body (1) in a manner that first end portion (21) is at least partly situated in the neck-shaped portion (5), cavity (13) is situated within reflecting portion (2), the electric light source (16) is predominantly situated on the optical axis (4), a ceramic insert (42), beneath mounting ring (40) through which the seal of first end portion (21) is passed, is effective to dissipate heat from first end portion (21) during operation of the lamp.