DE102007005790A1 - Diaphragm e.g. field diaphragm, positioning device for e.g. inverse fluorescence microscope, has diaphragm units actively connected with manual drives or drives, which are controlled by computer or control unit - Google Patents

Abstract

The device has a diaphragm support arraigned a field diaphragm plane of an illumination device. A set of diaphragm units (12-15) is arranged in the support. The diaphragm units are adjustable in a plane that is perpendicular to an optical axis of an illumination beam path. The diaphragm units form a diaphragm opening (11) and are moved relative to each other. The diaphragm units are actively connected with manual drives or drives (18-21), which are controlled by a computer or a control unit (22).

Description

The The invention relates to a device for diaphragm positioning, in particular for a motorized field diaphragm, which in the most different types and types of microscopes, such as In upright or inverse fluorescence microscopes, or also be used with other optical devices application.

From the DE 26 26 872 C2 a lighting arrangement is known, which is arranged in the microscope head. This illumination arrangement has a diaphragm support, which is mounted manually adjustable in a direction perpendicular to the optical axis of the illumination beam path extending plane. In the diaphragm support a variable aperture is arranged. By rotation of an arranged in the screen carrier ring element, which is in operative connection with the aperture opening delimiting aperture blades, the size of the aperture can be changed. A change in the position of the diaphragm opening within the said plane is achieved by a manual displacement of the diaphragm carrier transversely to the optical axis. All adjustments of the aperture are done manually. An automated and / or motorized adjustment is not possible and provided with this arrangement.

An automatically controlled lighting system, in particular for microscopes, is known from US 4,643,540 known. In this microscope, the data of each lens used in the microscope beam path are input into a first memory connected to a data processing unit and stored there, wherein the data processing unit drives for the field of view and aperture and for the condenser are controlled. In a second memory, also connected to the data processing unit, data for a suitable lighting system is stored. From all these data, the optimal illumination brightness setting data, the size of the aperture and field diaphragm are automatically determined by means of the data processing unit, and the apertures and lighting device are adjusted by the drives accordingly. A controlled displacement or positioning of a diaphragm in a plane orthogonal to the optical axis of the microscope beam path or the beam path of the illumination system is not provided in this microscope.

Of the The invention is based on the object, a device for aperture control and diaphragm positioning, especially in microscopes, with which a diaphragm with respect to their opening and their lateral position to the optical axis of the beam path manually and automatically adjusted.

According to the invention this task in one of the features of the first claim trained establishment with those in the characterizing part of this Claim set out resolved. In the other Claims are details and embodiments of the invention disclosed.

So For example, it may be an advantage that on the screen carrier two in orthogonal directions in a plane perpendicular to the optical axis adjustable pairs of aperture elements are provided.

It is also advantageous if the directions of movement of the diaphragm elements and / or the pairs of diaphragm elements are parallel.

For It may also be advantageous for certain applications that the Aperture limiting edges of the aperture elements straight, arcuate or designed in any other suitable form are.

Especially in facilities with parallel movable aperture elements it is beneficial if the, the aperture limiting Edges of the aperture elements obliquely to the direction of movement.

The Invention will hereinafter be an embodiment be explained in more detail. In the drawing show:

1 greatly simplifies the elements of the illumination beam path of a microscope,

2 a device for diaphragm positioning with aperture elements with straight edges and associated drives,

3 a device with triangular aperture elements and

4 a device with aperture elements with arcuate edges.

The Device according to the invention will be described below for the sake of simplicity, in conjunction with the illumination beam path a simple transmitted light microscope are explained.

In 1 schematically shows the elements of the microscope, which realize the illumination beam path. So are a light source 1 and a collector 2 a fiction, contemporary field stop 3 in a field panel layer 4 arranged downstream in the illumination beam path. Over a deflection mirror 5 , in the light direction, a condenser 6 is the field stop 3 on that the stage 7 of the microscope arranged object 8th which is represented by a lens located in the observation beam path 9 For example, in a Okularbildebene or in one, in the 1 not shown intermediate image plane is displayed.

In the 2 illustrated device for aperture positioning, ie for positioning the aperture 11 within the perpendicular to the optical axis 10 of the illumination beam path running field stop plane 4 , includes four aperture elements 12 to 15 , which are arranged on a screen carrier (not shown). These aperture elements 12 to 15 are in two orthogonal zueinender in the field diaphragm plane 4 adjustable pairs 12 ; 13 and 14 ; 15 split, with the aperture elements 12 ; 13 respectively. 14 ; 15 of each pair are separately adjustable relative to each other. The adjustment directions are indicated by arrows 16 on the panel elements 12 to 15 characterized. The aperture elements 12 to 15 at the in 2 shown aperture device have straight edges 17 showing the aperture 11 limit.

Each of the four aperture elements 12 to 15 is advantageous with a separate drive 18 ; 19 ; 20 ; 21 operatively connected, through which the diaphragm elements 12 to 15 in the by the arrows 16 marked directions within the field stop plane 4 for adjusting the lateral position and the size of the aperture 11 For example, can be adjusted by motor. It is also conceivable to provide a drive for fixing the diaphragm opening and a drive for fixing the center position of the diaphragm opening per pair of diaphragm elements.

For controlling these drives 18 to 21 is advantageous a control unit 22 or a computer provided with which the drives can be controlled by suitable programs. It is also conceivable, a manual adjustment of the aperture elements 12 to 15 provide, which are then arranged in place of motor drives or motor drives and manual adjustment drives.

In 3 is another device for positioning an aperture in the field stop plane 4 which also includes two pairs of aperture elements 28 to 31 holding a shutter 32 form, includes. These aperture elements 28 to 32 of each pair are linear in concurrent directions, which in the 3 through arrows 33 ; 34 are marked, movable. By moving the aperture elements together 28 ; 29 one of the pair relative to the aperture elements 30 ; 31 of the other pair or by a common shifting of both pairs in the by the arrows 33 ; 34 indicated concurrent or orthogonal directions, the lateral position of the through the aperture elements 28 to 31 limited aperture 32 in the field diaphragm level 4 to be changed. By changing the positions of the aperture elements 28 ; 29 and / or the aperture elements 30 ; 31 relative to each other, the size of the aperture 32 be varied. The the aperture 32 limiting edges of the individual panel elements 28 to 31 run at an angle to the respective direction of movement.

4 shows the arrangement of aperture elements 23 to 26 , which curved edges 27 have. In this embodiment, the drives for the displacement of the diaphragm elements are not shown for the sake of simplicity. The edges of the diaphragm elements may also have another suitable shape, such. B. an angled shape.

In a specific embodiment, for example, the device for diaphragm positioning can be arranged in a housing and so as a completed assembly at the location of the field stop plane 4 or at a suitable different position in the microscope beam or other optical device in the manner of a slider as needed be introduced.

The Device for aperture positioning can be both in the field diaphragm level in the illumination beam path as well as at other suitable positions in the beam path of different types and types of microscopes and also in the beam paths of other optical devices be provided.

1

light source

2

collector

3

field stop

4

Field stop plane

5

deflecting

6

condenser

7

stage

8th

object

9

lens

10

optical axis

11

aperture

12 to 15

diaphragm element

16

arrow

17

edge

18 until 21

drive

22

control unit

23 to 26

diaphragm elements

27

edge

28 until 31

diaphragm elements

32

aperture

33; 34

arrow

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2626872 C2 [0002]
• US 4643540 [0003]

Claims (5)

Means for diaphragm positioning on microscopes, comprising a diaphragm support which is arranged in the field diaphragm plane of a lighting device of a microscope or at other suitable positions in the beam paths of microscopes and on which the diaphragm forming diaphragm elements are adjustably arranged, characterized in that - Blend carrier two, in one to the optical axis ( 10 ) of the illumination beam path vertical plane adjustable pairs ( 12 and 13 ; 14 and 15 ; 23 and 24 ; 25 and 26 ; 28 and 29 ; 30 and 31 ) of diaphragm elements ( 12 to 15 ; 23 to 26 ; 28 to 31 ), which together form an aperture ( 11 ; 32 ), wherein the diaphragm elements of each pair relative to each other and / or the pairs of diaphragm elements ( 12 ; 13 and 14 ; 15 . 23 ; 24 and 25 ; 26 . 28 ; 29 and 30 ; 31 ) of an aperture arrangement are adjustable relative to each other - and that each aperture element ( 12 to 15 ; 23 to 26 ; 28 to 31 ) or each pair of aperture elements ( 12 and 13 ; 14 and 15 ; 23 and 24 ; 25 and 26 ; 28 and 29 ; 30 and 31 ) with a manual and / or one, a computer or a control unit ( 22 ) controlled drive ( 18 to 21 ) is operatively connected. Device according to claim 1, characterized in that on the diaphragm support two in orthogonal directions in one to the optical axis ( 10 ) vertical plane adjustable pairs of diaphragm elements ( 12 and 13 ; 14 and 15 ; 23 and 24 ; 25 and 26 ) are provided. Device according to claim 1, characterized in that the directions of movement of the diaphragm elements ( 28 to 31 ) and / or the pairs of diaphragm elements ( 28 and 29 ; 30 and 31 ) run parallel. Device according to one of claims 1 to 3, characterized in that the, the aperture ( 11 ; 32 ) bounding edges ( 17 ; 27 ) of the panel elements are straight, arcuate or configured in any other suitable form. Device according to one of claims 1 to 4, characterized in that the, the aperture ( 11 ; 32 ) bounding edges ( 17 ; 27 ) of the diaphragm elements ( 12 to 15 ; 23 to 26 ; 28 to 31 ) run obliquely to the direction of movement.