The portable device (1) for quality control of semen comprises a housing (10) and within an inner space (11) of the housing, an accumulator (20), a processor unit (30) and a sample storing unit (40) for fixing a sample transporting cell (90), wherein the device (1) is further provided with a microscope unit (50) comprising a camera unit (51) secured to the housing (10), an optical unit (52) connected to the camera unit (51) and a light source (53) illuminating the sample transporting cell (90) during use, and wherein the sample storing unit (40) is arranged inside the housing (10) at the upper side of the housing (10) or adjacent thereto, wherein the light source (53) is arranged on the outer side of the sample storing unit (40) and connected to the housing (10), wherein the camera unit (51) is arranged in the inner space (11) of the housing, on the inner side of the sample storing unit (40) in such a configuration that the distance between the supporting plane (41) of the sample storing unit (40) and the light sensor of the camera unit (51) is at most 35 mm, and wherein the optical unit (52) is arranged between the camera unit (51) and the sample storing unit (40).

The present invention relates to an optical system with a variable focal distance in a predetermined focal distance range, comprising two mirrors and a KB mechanical assembly having two supports adapted to support the mirrors one after the other along their main axis so as to form a propagation path.

The system is characterized in that each mirror has a useful portion whose width and/or thickness is/are variable and selected according to said predetermined distance range, and in that, for each mirror, it further comprises a deformation mechanism adapted to generate a curvature of the corresponding mirror along its length to adjust the focal distance within said predetermined distance range.

A microscope system is provided with a microscope that acquires images at least at a first magnification and a second magnification higher than the first magnification, and a processor. The processor is configured to specify a type of a container in which a specimen is placed, and when starting observation of the specimen placed in the container at the second magnification, the processor is configured to specify an observation start position by performing object detection according to the type of container on a first image that includes the container acquired by the microscope at the first magnification, and control a relative position of the microscope with respect to the specimen such that the observation start position is contained in a field of view at the second magnification of the microscope.

The invention relates to a method for recording and providing digital images using a digital surgical microscope system. The method includes recording magnified video image of an object region by an image sensor in the image recording unit. The method also includes displaying, on a digital display unit, in at least certain regions, the image recorded by the image sensor. A magnification of the image displayed on the digital display unit is adjusted by a limit value of the magnification. The limit value of the magnification is set using situative parameters to determine an optimum magnification.

A changing system for a microscope includes multiple afocal enlargement changing modules of different enlargement levels that are optionally introducible into an infinite beam path running along an optical axis of the microscope. Each of the enlargement changing modules contain a light deflection system. The light deflection systems are designed to adjust the path length of the infinite beam path passing through the respective enlargement changing module in such a way that all of the enlargement changing modules, regardless of the different enlargement levels of the enlargement changing modules, map an exit pupil of a lens of the microscope onto the same location along the optical axis.

It was not always easy to observe the collected specimens at the specimen collection site. With a specimen container part having an observation cell which stores a collected specimen and allows observation of cells contained in the collected specimen, a phase-contrast objective lens disposed at a position corresponding to the observation cell, and a smartphone mounting fixture on which a smartphone with an imaging function can be mounted, a multifunctional phase-contrast microscopic device MR performing the observation of cells via a phase-contrast objective lens by using a smartphone mounted on a smartphone mounting fixture is provided.

An immersion objective comprises an objective body in which optical components are accommodated, at least one immersion fluid tank and at least one objective-body coupling connection on the objective body. The immersion fluid tank can be supported in a detachable manner via the objective-body coupling connection. At least one pump is supported via the objective body, wherein the pump is arranged in order to convey immersion fluid from the immersion fluid tank to an objective front side. A control electronics component is supported via the objective body and is configured to control the at least one pump.

Systems and methods configured for simultaneous imaging and stimulation using a microscope system. The microscope system can have a relatively small size compared to an average microscope system. The microscope can comprise in part an imaging light source and a stimulation light source. Light from the imaging light source and the stimulation light source can be spectrally separated to reduce cross talk between the stimulation light and the imaging light.

A modular finite conjugate zoom lens assembly with five lens groups each including a doublet, wherein two or three movable lens groups are disposed between a pair of static lens groups.

A system and method for automated analysis of a filter obtained from an air quality monitoring apparatus used for sampling airborne respirable particles such as asbestos fibres, synthetic mineral fibres, pollen or mould particles is described. The system comprises capturing images at a plurality of sample locations. At least one magnified phase contrast image is obtained at each sample location. An automated quality assessment is then performed using a computer vision method to assess one or more quality criteria. Failure may lead to the sample location being ignored for subsequent analysis, or the whole filter slide may be rejected if the overall quality is poor. The quality assessment may performed be in two stages comprising an overall filter quality assessment performed on a series of low power/magnification images captured over the filter and a field of view or graticule level quality assessment performed on high power/magnification images captured at individual sample locations on the filter. Images which pass the quality assessment are then analysed using a computer vision method to identify and count the number of respirable particles.