摘要:
It is provided a method for optical scanning of at least one object region (105) placed on a transparent specimen holder (107), the method comprising: for each sample lateral position (x1) of plural predefined sample lateral positions (x0,x1,x2) performing a focus determination by: performing laser reflection and using a first camera (109) taking plural first images to determine a reference distance (rd) between the specimen holder (107) and an objective lens (113); performing transmission flash illumination and using a second camera (111) taking plural second images to define a focus distance taking into account the reference distance (rd); after completing the focus determination, determining a focus distance topology (600; 700) across the object region (105) based on the focus distances determined for all sample lateral positions (x0,x1,x2); and laterally moving the specimen holder (107) and acquiring third images while focusing according to the focus distance topology (600, 700);
摘要:
The invention relates to a microscope (10) having a movable stage (18) and an adjusting unit (24) for moving the stage (18). The adjusting unit (24) comprises a drive shaft (38) by the rotation of which the distance between the stage (18) and a base (22) of the microscope (10) is adjustable. Further, the microscope (10) has a manually operable operating unit (26) with a first output shaft (46) as well as an electric drive unit (28) for the motorized movement of the stage (18) with a second output shaft (52). In a manual operating mode, the drive shaft (38) is coupled to the first output shaft (46) via a first coupling unit (54), and in a motorized operating mode the drive shaft (38) is coupled to the second output shaft (52) via a second coupling unit (56).
摘要:
A dual-configuration microscope is provided. The microscope may be converted into an upright configuration or an inverted configuration. The microscope includes a base having a lower portion and an upper portion, the lower portion configured to support the microscope. The microscope further includes a body having a first portion, a second portion, and an intermediate portion extending between the first and second portions. The intermediate portion of the body is rotatably coupled to the upper portion of the base at a rotational coupling. The rotational coupling defines a rotating axis that extends in a longitudinal direction with respect to the microscope. The microscope further includes an objective disposed proximal to the first portion and a light source disposed proximal to the second portion.
摘要:
This is an optical apparatus provided with an objective (5) with a correction collar (5A) for correcting aberration due to an error in the optical thickness of a cover glass (20) comprising a focusing mechanism for changing a distance between the objective (5) and the sample (18), an optical thickness detecting unit for detecting the optical thickness of the cover glass (20), an operating unit (27) for calculating the amount of aberration correction, based on the optical thickness of the cover glass detected by the optical thickness detecting unit, a driver unit (25) for driving a correction collar, based on the amount of aberration correction calculated by the operating unit (27) and an imaging sensor (15) for forming the image of the sample that passes through the objective.
摘要:
The invention relates to a method and to an arrangement for operating a dynamic nano focusing system for use thereof in the field of microscopy, interferometry or similar applications, wherein the nano focusing system comprises a lever-transmission piezo actuator and a frictionless guide based on a resiliently deformable solid body joint which is connected to a mounting unit, in particular for a lens, in order to implement the desired adjustment paths for the focusing. According to the invention, in order to increase the dynamics during the focusing process, a secondary fine adjustment movement is superimposed on the primary adjustment movement, said secondary fine adjustment movement having a smaller adjustment path but higher frequency than the primary adjustment movement, wherein, when the fine adjustment is carried out, a determination is made as to whether the focusing result changes, in order to specify according thereto the amount and/or the direction of the primary adjustment movement.
摘要:
The invention relates to an autofocusing method for use in the microscopic examination of an object (3) lying in the focus of a microscope objective (2) of a microscope (1), using an autofocus beam path (4), wherein the autofocus beam path (4) is directed toward the microscope objective (2) by means of a deflecting device (5) arranged on the side of the microscope objective facing away from the object and from there to a reflective autofocus interface (7) in the object region, and the autofocus beam path (4) reflected on the autofocus interface (7) is directed toward an autofocus detector (9) by means of the microscope objective (2) and the deflecting device (5), wherein the deflecting device (5) has two regions (51, 52; 53, 54), which are arranged at a distance from each other in the propagation direction of the autofocus beam path (4) and which each reflect the autofocus beam path (4), for producing interfering sub-beams (41, 42, 43, 44) of the autofocus beam path (4), and wherein the autofocus detector (9) is arranged in a plane conjugate to that of the microscope objective aperture in order to detect an interference pattern produced there, wherein the focus of the microscope (1) is adjusted according to the detected interference pattern (10).
摘要:
A controller (2) controls a driving speed used when a distance is changed by driving an electric focusing mechanism (10) for adjusting the distance between a sample (S) as an observation target of a microscope (1) and an objective lens (13) based on a depth of focus of an optical observation system of the microscope (1).
摘要:
A specimen and an objective lens can be quickly brought close together or separated without an operator being concerned about the positional relationship between the specimen and the objective lens, and once the correct positional relationship is established, the focal position can be finely adjusted. The invention includes a first focusing mechanism for moving the objective lens in an optical axis direction relative to the specimen so as to approach the specimen or withdraw therefrom; a second focusing mechanism for displacing an internal optical system in the optical axis direction, and a switching device for switching between operating the first focusing mechanism and operating the second focusing mechanism when the objective lens is disposed at a predetermined switching position.
摘要:
An optical microscope of high stability such that the image of a sample does not become unsharp during observation, and no movement (drift) of an object point (object) occurs. The optical microscope is characterized by comprising vertical straight movement guide mechanisms (4 and 8) for an objective lens (6) of the microscope symmetrical to the optical axis, and fine adjustment means (10, 11 and 12) for the objective lens.