Abstract: A phase difference observation apparatus includes a light source; an illumination guide to guide illumination light from the light source to an observation target object in a cell culture vessel; an optical imager to form an optical image of the observation target object on an image sensor; and a controller. The illumination guide includes a spatial modulator to change an intensity distribution of the illumination light; the controller contains intensity distribution correction information associating a position of the imaging guide with respect to the cell culture vessel with an intensity distribution of illumination light at the position of the optical imager; the controller acquires imaging system position information, which is the position of the optical imager; and the controller changes an intensity distribution of illumination light in the spatial modulator on the basis of the imaging system position information and the intensity distribution correction information.

Abstract: A portable device for quality control of semen having a housing and within an inner space of the housing, a battery, a processor and a sample storing device for fixing a sample transporting cell. The device further has a microscope having a camera secured to the housing, an optical device connected to the camera and a light source illuminating the sample transporting cell during use. The sample storing device is arranged in the upper side of the housing or adjacent thereto. The light source is arranged on the outer side of the sample storing device and connected to the housing. The camera is arranged in the inner space of the housing, on the inner side of the sample storing device such that the distance between the supporting plane of the sample storing device and the light sensor of the camera is at most 35 mm.

Abstract: A method for capturing a relative alignment of a surface (2.1), extending substantially in one plane, of an object (2), in which a focus (f) of a light beam is guided along a scanning path (1). Components of the light beam that are reflected by the surface (2.1) are captured. The scanning path (1) extends substantially parallel to an x-y-plane that extends orthogonally to an optical axis (oA) of a detection objective (5). A relative position and alignment of the surface (2.1) are ascertained on the basis of the reflected components. A normal (N) of the surface (2.1) and the relative alignment thereof are virtually ascertained and/or the focus (F) is moved in the direction of the optical axis (oA) during the scanning of the scanning path (1, 1ax) such that an axial scan trajectory or an axial scanning path (1ax) are brought about.

Abstract: A device by which the magnification stages of a magnification selector based on Galilean telescope systems can be adjusted by a motor. The magnification selector has a sensor that transmits the currently magnification stage to a control unit; in the control unit, an assignment of the magnification stages present on the magnification selector to a sequence of the magnification stages, organized based on size, is stored. For the user, there are operating elements connected to the control unit for selecting a magnification stage. In order to set the magnification stage selected by the user via the operating elements, the magnification selector has an actuator, which is connected to the control unit to receive appropriate control signals. Although provided in particular for slit lamps and surgical microscopes having eyepieces, the solution can also be applied in other ophthalmological devices or devices from other technical fields.

Abstract: The eye cover system has a scope attachment portion, an adjustment portion, and an eye cover portion. The scope attachment portion is arched so as to receive a cylindrical eyepiece of a spotting scope. The scope attachment portion couples to the eyepiece via an adjustable elastic band. Further, the scope attachment portion is coupled to a shaft that receives the eye cover portion. The eye cover portion comprises a removably attachable hood with a protrusion that receives the shaft through a slide aperture. In use, the unused eye's view is blocked by the hood.

Abstract: An optical system for a microscope for imaging an object includes: a telescope system having an optical correction unit, which is adjustable in order to correct a spherical imaging aberration, and having a zoom optical unit, which is adjustable in order to adapt a magnification of the telescope system to a ratio of two refractive indices, one of which is assigned to an object side and an other of which is assigned to an image side, within a predetermined magnification range. The telescope system is telecentric over an entire magnification range both with respect to the object side and with respect to the image side by the zoom optical unit contained in the telescope system.

Abstract: The invention relates to a microscope for microscopic examination of a sample comprising a microscope housing enclosing an illumination optics, a microscope stage and an imaging optics, an integrated sample chamber located within the microscope housing and formed by a separated housing section within the microscope housing. The housing section has a lid which provides direct access to the microscope stage for placing the sample in the sample chamber. The housing section has an interface for connection of an external incubation environment conditioning unit to the sample chamber. The interface is configured to provide a connection between the external incubation environment conditioning unit and the sample chamber, such that the environmental conditions in the sample chamber can be controlled when the external incubation environment conditioning unit is connected to the interface.

Abstract: An image acquisition device includes: a stage on which a sample is placed; a drive unit; a first irradiation optical system; a second irradiation optical system; a beam splitter; a pupil dividing element; a first imaging lens; a first imaging element; an analysis unit; a control unit; a second imaging lens; and a second imaging element, a first irradiation light irradiation range captured by the first irradiation optical system includes a second imaging region captured by the second imaging element, the second imaging region is located behind a first imaging region in a scanning direction, and the control unit controls a focus position of an objective lens based on focus information before capturing the second imaging region by the second imaging element.

Abstract: An optical filter has a back-scattering property. The linear transmittance thereof to light of at least some avelengths in the wavelength range of 760-2000 nm is 60% or higher. The azimuth is 20° from an incidence plane when the polar angle of the direction of incidence of incident light is 0°. The value of a bidirectional reflectance distribution function in the direction ‘here the polar angle is ?60’ is BRDF (0°; 20°, ?60°). The azimuth is 20° from an incidence plane when the polar angle of the direction of incidence of incident light is 30°. The value of a bidirectional reflectance distribution function in the direction where the polar angle is ?60° is BRDF (30°; 20°, ?60°). The azimuth is 20° from an incidence plane when the polar angle of the direction of incidence of incident light is 60°.

Abstract: The present description relates to a device that includes: a microscope lens with an optical axis; a mounting that includes a distal portion, in which the microscope lens is arranged; a first end piece fixed in a removable manner, in a first operating mode for in vivo microscopic analysis of the skin, to the distal portion of the mounting; a second end piece fixed in a removable manner, in a second operating mode for ex vivo microscopic analysis of a sample, to the distal portion of the mounting; a sample carrier with a receiving surface; a support that cooperates with the second end piece in the second operating mode so as to receive the mounting so that the optical axis of the microscope lens is substantially aligned in a predetermined direction with respect to the receiving surface.

Abstract: The technology relates to a long-range optical device for a firearm with an objective and an eyepiece, through which an observation beam path is formed for aiming at a target, the long-range optical device further comprising an opto-electronic display device, wherein the display device comprises an LCoS display for displaying variable data or a target mark, wherein a display beam path of the display device runs at least partly in the observation beam path for displaying the remote object.

Abstract: An observation device captures images at focal positions inside a sample container with an optical system that includes an objective lens; an objective lens actuator; an irradiation unit; a reflection light intensity detector; a focus controller that positions the focal point of the objective lens on a reflection surface imparting a peak in the reflected light intensity; and a counting unit. The focus control unit drives the objective lens actuator and positions the focal point on a reflection surface when a peak is detected in the reflected light intensity; and the counting unit counts the reflection surface when the focus control unit has positioned the focal point on the reflection surface. The computation unit determines whether or not the focal point is positioned at the focal position, and causes the optical system to capture images if the focal point is positioned at the focal position.

Abstract: A riflescope having a display that provides information to a user of the riflescope, along with related methods, is provided herein. In one embodiment, a riflescope includes an objective system and an ocular system, wherein a focal plane is defined between the objective system and the ocular system. A display system, comprising a display and a mirror, is positioned at a location between the focal plane and the ocular system. In one embodiment, the distance between the focal plane and the ocular system is equal to a sum of a distance between the display and the mirror and a distance between the mirror and the ocular system.

Abstract: Provided is a microscope drape capable of further facilitating an attachment operation thereof to a surgical microscope. A microscope drape comprises: a lens cap attached to and detached from a housing of an objective lens of a surgical microscope; a protective lens protecting the objective lens; and a drape main body covering the surgical microscope. The lens cap is formed such that a portion in a circumferential direction of a cylinder is opened, and has an arc-shaped cross section perpendicular to an optical axis of the objective lens. The microscope drape includes: a protective lens holder that is a cylinder whose outside diameter is larger in size than an inside diameter of the lens cap in a natural state and holds the protective lens; and a joint that pivotably supports the protective lens holder with respect to the lens cap around a pivot axis perpendicular to the optical axis.

Abstract: An adjustable headband for virtual reality glasses and virtual reality glasses are provided. The virtual reality glasses include a glasses body, a fixing headband and an adjustable headband. The adjustable headband includes a housing, a telescoping band, a drive portion, and a control portion. The drive portion includes a first transmission component, a first elastic component and a second transmission component. The control portion is configured to drive the first transmission component. The first transmission portion is configured to drive the second transmission component. The second transmission portion is configured to drive the telescoping band. The first elastic component is configured to control a drive connection between the first transmission component and the control portion.

Abstract: A space optical instrument is disclosed including a primary mirror having an optical axis and including a first face, referred to as the front face, oriented towards an observed area, and a second face opposite to the first, referred to as the rear face, the optical instrument further including a thermal stabilization device for the primary mirror, comprising a thermally conductive wall extending around the optical axis (O) on the front face side of the primary mirror towards which this face is oriented. The thermal stabilization device further includes a temperature regulating device for the circumferential wall that is capable of using the measurement of an incident heat flux on the mirror, and adapting the temperature of the circumferential wall according to the measured incident heat flux, in order to keep the front face of the mirror at a constant temperature.

Abstract: A device for protecting a dental professional from patient aerosol and splatter is provided. The device includes a first elastic section with two holes connected to a second rigid section. The first section is sufficiently elastic to allow for increasing or decreasing the inter optic distance of a binocular operating microscope without affecting the seal or material integrity of the first section or the position or function of the second section.

Abstract: A sample observation device includes: an emission optical system that emits planar light to a sample; a scanning unit that scans the sample in one direction so as to pass through an emission surface of the planar light; an imaging optical system that has an observation axis inclined with respect to the emission surface and forms an image of observation light generated in the sample by emission of the planar light; an image acquisition unit that acquires image data corresponding to an optical image of the observation light formed by the imaging optical system; and an image generation unit that generates observation image data of the sample based on the image data acquired by the image acquisition unit. The imaging optical system has a non-axisymmetric optical element that bends a light beam on one axis of the observation light but does not bend a light beam on the other axis perpendicular to the one axis.

Abstract: A multi-camera vehicular video display system includes an interior rearview mirror assembly having a mirror head that includes a transflective mirror element and a video display screen disposed behind the transflective mirror element. The mirror assembly includes a mechanism that is operable to change orientation of the transflective mirror element relative to a driver of the vehicle. When the mechanism changes orientation to a second position that is tilted away from the eyes of the driver of the vehicle, the video display screen displays video images viewable through the transflective mirror element. When the mechanism changes orientation to a first position that is tilted towards the eyes of the driver of the vehicle, the video display screen does not display video images. The displayed video images are derived, at least in part, from image data captured by at least one exterior viewing camera of the vehicle.

Abstract: The invention is directed to a heated stage assembly that can achieve high temperatures (i.e., 40 degrees Celsius and higher and more specifically, 55 degrees Celsius and higher) for use in microscopy including fluorescence microscopy. The microscope stage heater assembly includes a mounting adapter element, a sample holder element mounted within the mounting adapter element, one or more heating elements attached to the sample holder element, and an optical window holder element disposed on a surface of the sample holder element that encloses an optical window element. The optical window element may be in contact with a microscope sample such that the optical window element is heated by the sample holder element to uniformly distribute heat to the specimen.