DE102007004343B4 - Eyecup for an eyepiece and eyepiece - Google Patents

Abstract

Eyepiece housing with an eyecup (50), which is adjustable in the axial direction relative to the eyepiece housing (10, 30) and is designed to be removable from the eyepiece housing (10, 30), the eyecup (50) being made in one piece and with a rising in the axial direction, in the eyecup (50) is provided with an internal thread (51) which can be brought into engagement with an external thread (12) of the eyepiece housing (10, 30), characterized in that the eyecup (50) is at least partially elastically shaped in such a way that by deforming the corresponding sections of the eyecup (50), the eyepiece housing (10, 30) is to be removed or applied to the eyepiece housing (10, 30), the eyepiece housing (10, 30) having an undercut (13) formed in the circumferential direction limited in the axial direction on one side by the external thread (12) of the eyepiece housing (10, 30), on the other side by an axial stop (14) on the eyepiece housing (10, 30) and wherein the eyecup (50) has at one end (52) a circumferential direction ...

Description

The invention relates to an eyecup for an eyepiece, which is designed to be adjustable in the axial direction relative to the eyepiece and removable from the eyepiece. The invention further relates to an eyepiece housing, in particular with a Dioptrieeinstellring, with such an eyecup. Furthermore, the invention relates to an eyepiece with a device for diopter adjustment, which has a Dioptrieeinstellring which is rotatably mounted about the eyepiece of the eyepiece, for the axial movement of a lens group in the eyepiece. Finally, the invention relates to a combination of such an eyepiece with said eyecup and a microscope with such eyepiece.

Eyepiece housing with eyecups, which are arranged displaceably along the longitudinal axis of the eyepiece to be able to set an optimal position of the eye to the exit pupil of the eyepiece for both eyeglass wearer and normal eyesight, are known. For example, in the US-5,784,207A allows such a longitudinal adjustment by means of a groove-screw connection, being produced by leaf spring elements detents. A similar groove-pin guide for an eyepiece housing with adjustable eyecup is from the DE 299 04 366 U1 known. The detent is generated here by an angular change in direction of the guide. A disadvantage of both arrangements, the risk of wear during prolonged use and the lack of possibility of disassembly of the eyecup for the purpose of replacement or cleaning.

From the DE 101 39 173 C1 An arrangement for rotatably adjusting a cap on an eyepiece housing is known. The eyepiece housing has for this purpose three pins, which are arranged in the circumferential direction and pointing radially outward, while the cap has correspondingly three grooves which are arranged on the inside of the cap, to rise in the axial direction and over part of the circumference of the cap extend. The cap is placed with the groove edges on the corresponding pin on the eyepiece housing and can be brought by turning counterclockwise in a first detent position. The detent is made by recessing the groove. By further turning the cap in a clockwise direction, it can be pushed onto the eyepiece housing, wherein different detent positions can be taken by local recesses. The change of direction of rotation here represents a safeguard against unintentional lifting of the cap. Both the cap and a rubber-elastic coating surrounding the cap can be removed in the arrangement proposed here for the purpose of replacement or cleaning. In the solution proposed here, the heads of the pins slide under a bias generated by the elastically deformable plastic-made cap by deformation on the running surfaces of the grooves. This results in a difficult adjustment, which is also vulnerable to abrasion. This explains that emphasis is placed here on abrasion-resistant material with a low coefficient of thermal expansion for the cap and on polished surfaces of the heads of the pins in order to promote lubricity and service life. The removability of the cap is cumbersome as well as the rubber-elastic coating. Another disadvantage is the bipartite of the eyecup.

The optics of the eyepieces are designed so that the exit pupils are at an ergonomically correct distance from the front lens of the eyepiece. It should be noted that the distance of the eye to the front lens in spectacle wearers is greater than in normal eyesight. For this purpose, eyepieces are created with a greater distance of the front lens to the exit pupil, which take into account the additional distance between the eye and spectacle lens. If such eyepieces are used by non-wearers, an eyecup must be placed on the eyepiece to provide the additional distance and to allow easy contact of the eyebrows with the eyepiece or eyecup edge. It should be noted that the normal-sighted user as the spectacle wearer seeks contact with the eyepiece or eyecup edge.

Eyecups are often part of eyepieces with dioptre adjustment devices. The latter usually have a Dioptrieeinstellring which is rotatably mounted around the eyepiece of the eyepiece to move by rotation of the Dioptrieeinstellrings a lens group in the eyepiece axially. The term lens group is intended to include any arrangement of lenses (including a single lens) necessary for diopter adjustment.

An eyecup according to US 23 51 747 A is firmly connected to a locking ring by the eyecup is screwed onto the locking ring. The locking ring is in turn screwed onto a threaded end of the eyepiece housing.

US 57 19 712 discloses an eyepiece having a diopter adjustment ring rotatably mounted about the axis of the eyepiece for axially moving a lens group in the eyepiece. On two sections of Dioptrieeinstellrings are each a knob, which are to be brought into engagement with corresponding grooves of an outer toothing, wherein the external toothing is part of the Okulargehäuses. The object underlying this invention aims to increase the angular resolution of the Dioptrieeinstellrings by suitable arrangement of the grooves.

The DE 44 12 901 has a Dioptrieeinstellmechanismus for binoculars to the object, wherein rotation retaining means are provided for preventing the Dioptrieeinstellrings to an unintentional movement, which block the Dioptrieeinstellring. However, such a rotation prevention device is not the subject of the present invention. The disadvantage of such a device is that the proposed backup by the anti-rotation device by a user after diopter adjustment can be forgotten, so that in this case a free unhindered diopter adjustment would be possible, and that the actual diopter adjustment is made difficult by the Dioptrieeinstellring against a Spring force along the optical axis must be moved.

The US 2,378,508 shows an eyecup, which is fastened without internal thread on the eyepiece tube. It is not an axially adjustable elastic eyecup.

The US 2,919,622 relates to an elastic eyecup, which is fastened by means of a thread. The eyecup is not made in one piece and also not displaceable in the axial direction.

Finally, out of the US 1,229,117 an eyepiece housing with an eyecup according to the preamble of claim 1. The eyepiece housing has a device for diopter adjustment.

For eyepieces with a device for diopter adjustment, the diopter adjustment should be easily possible and easily reproducible for the individual user. Once the diopter adjustment has been set, it should remain in position when using the eyepiece. In particular, in a manipulation of the eyecup Dioptrieeinstellposition should not be able to be adjusted unintentionally.

Furthermore, it is desirable if, especially for hygienic reasons, the eyecups are easily replaceable, so that each user can put on his own eyecup.

Object of the present invention is to provide an eyepiece with an eyecup on the one hand and an eyepiece with a device for diopter adjustment on the other hand, which is suitable for normal eyesight and for defective eyes and avoids the disadvantages of the mentioned in the introduction of the prior art.

Furthermore, the eyecup of the eyepiece housing should be adjustable and at the same time exchangeable in a user-friendly manner. In the eyepiece with a device for diopter adjustment unwanted adjustment of a once set diopter adjustment should be excluded as possible. Furthermore, an eyepiece is to be specified, which optimally combines a device for diopter adjustment with an eyepiece housing with an eyecup. Here is a set Dioptrieeinstellung when using the eyepiece (contact) does not move unintentionally, especially not with an adjustment of the eyecup.

This object is achieved by the subject-matter of independent claims 1 and 9. According to the invention, an eyepiece housing is first proposed with an eyecup, wherein the eyecup is adjustable in the axial direction relative to the eyepiece and removable from the eyepiece housing, wherein the eyecup is made in one piece and with is provided in an axially rising, molded into the eyecup internal thread. The associated eyepiece housing is characterized in that it has an external thread which is to be brought into engagement with the internal thread of the eyecup. Furthermore, the eyecup is at least partially elastically shaped so that by deformation of the corresponding portions of the eyecup this is removed from the eyepiece or applied to the eyepiece, wherein the eyepiece has a circumferentially formed undercut, in the axial direction on one side of the external thread of the eyepiece housing is limited on the other side by an axial stop on the eyepiece housing, and wherein the eyecup has at its one end a circumferentially extending elastic inner collar which is formed so that it dips into the undercut of the Okulargehäuses. Advantageous embodiments will become apparent from the respective dependent claims and the following description.

The one-piece eyecup can be removed as a whole from the eyepiece housing. The eyecup can be made as a whole, for example, by compression molding or injection molding. The eyecup can be screwed onto the eyepiece housing and screwed away from it and thus removably designed and at least partially so elastically shaped that by deformation of the corresponding portions of the eyecup to remove them from the eyepiece housing or is applied to the eyepiece. The female thread formed on the inner surface of the eyecup is to be engaged with an external thread on the outer surface of the eyepiece housing.

The movement via a thread designed very low friction and thus easier to handle than the movement of known mortise and tenon joints. The one-piece form of the Finally, eyecup avoids having to remove elastic covers from a cap for hygienic reasons, and in particular allows easy manufacture of the eyecup. Each user can thus use his own eyecup.

The substantially cylindrical eyecup has at its one end a circumferentially extending elastic inner collar.

The collar is in turn advantageously formed integrally with the eyecup and extends at least partially directed radially inward. Such a collar is advantageous to define attacks in the adjustment of the eyecup. For this purpose, the eyepiece has a circumferentially formed undercut, which is limited in the axial direction on one side by the external thread of the eyepiece, on the other side by an axial stop on the eyepiece. According to the invention then dips - in use - the collar of the eyecup in the back of the eyepiece case. By abutment of the collar either to the axial stop on the eyepiece or to the external thread of the eyepiece a possible adjustment is defined, ie two extreme positions of the eyecup relative to the eyepiece. This adjustment range is then passed through by turning the eyecup around the eyepiece housing.

In this context, it is advantageous if height markings are applied on the undercut in the axial direction. When turning the eyecup around the eyepiece housing, whereby the eyecup moves in the axial direction relative to the eyepiece housing, then height markings are visible, by means of which the relative position of the eyecup to the eyepiece housing can be read by the user.

It is advantageous if the collar of the eyecup has sufficient elasticity to ensure the removability of the eyecup from Okulargehäuse. In particular, a slight removability should be ensured. When removing the eyecup from the eyepiece housing thus the collar is bent elastically. The same applies in the opposite direction for putting the eyecup on the eyepiece housing. It may be particularly advantageous if the entire eyecup has corresponding elasticity to allow a complete pulling down of the eyecup from the external thread of the eyepiece housing. The same applies to the opposite direction. When pulled down, the eyecup deforms in this case, so that the heights and depressions of the outer thread of the eyepiece housing are overcome.

It is advantageous if the eyecup is made of an elastomer or rubber. Silicone or rubber with a hardness of 70 ± 5 shore A.

It is also advantageous if the pitch of the internal thread of the eyecup is selected such that the predetermined axial adjustment range can be traversed by rotation of the eyecup by less than 180 °. In this way, the entire adjustment can be traversed with a maximum of half a turn of the eyecup. Even cheaper are smaller turning ranges, preferably between 90 ° and 180 °. It has proved particularly advantageous if the rotation is 120 ° in order to pass through the adjustment range. This can be conveniently done with one hand.

In an advantageous embodiment, the eyepiece housing comprises a Dioptrieeinstellring as part of a device for diopter adjustment. The statements made about the eyepiece housing can then be transferred directly to the Dioptrieeinstellring when the eyecup is attached to the Dioptrieeinstellring.

Another main aspect of the invention relates to an eyepiece with a device for diopter adjustment. As already mentioned, the connecting idea of this aspect with that of the eyecup is that the diopter adjustment device is not unintentionally displaced when using the eyecup. A use of the eyecup is initially present when a user looks through the eyecup into the eyepiece, the user brings this usually the eyebrows or the lenses in contact with the eyecup. Further use of the eyecup occurs when the user (as a wearer of glasses) unscrews the eyecup to the eyepiece housing, in other words reduces the height, or (as normal viewers) screws the eyecup in the opposite direction to increase the height (height is hereby the distance of the front lens from the upper edge of the eyecup meant).

The eyepiece according to the invention, which has a Dioptrieeinstellring which is rotatably mounted about the axis of the eyepiece, to move a lens group in the eyepiece in the axial direction, characterized in that the Dioptrieeinstellring has an internal toothing along its circumference, and that an axially aligned resilient metal wire is attached as an elastic element with its one end to a fixed eyepiece, wherein the other, free end of the resilient metal wire engages in the internal toothing of the Dioptrieeinstellrings detent. In this construction, the fineness of the diopter adjustment is due to the density of the teeth certainly. The elastic element (spring steel wire) is pushed to adjust the diopter when turning the Dioptrieeinstellrings from a groove of the internal teeth and snaps into one of the adjacent grooves. Due to the elasticity, the release and re-engagement of the element in a groove of the internal toothing is possible. At the same time thereby the ease of adjustment of the diopter adjustment can be designed, in which case essentially the elasticity of the element is to be dimensioned accordingly. For example, the more strongly the resilient steel wire is biased toward the internal gear groove, the heavier the adjustability of the diopter adjustment ring will be.

It is advantageous if the engagement of the elastic element in a groove of the internal toothing is acoustically perceptible upon rotation of the diopter adjusting ring. Also fulfills the purpose of the resilient metal wire, especially when it engages in a likewise metallic internal teeth.

In order to keep the radial dimension of the eyepiece as low as possible, it is particularly advantageous if the internal toothing on a ring, in particular metal ring, is formed, which is embedded in the Dioptrieeinstellring. The resilient metal wire is aligned in the axial direction and aligned with one side or with one end on the eyepiece, so a fixed eyepiece attached. The other, free end then engages in the internal teeth of the Dioptrieeinstellrings. In this case, it makes sense to apply a diopter scale on the outside of the diopter adjustment ring whose zero position lies in the axial extension of the linear elastic element (steel wire). The Dioptrieskala can then be applied on both sides of the zero position in the circumferential direction on the Dioptrieeinstellring, which can be read by turning the Dioptrieeinstellrings each set diopter over the given by the steel wire index line on the Dioptrieskala.

The possibilities according to the invention of adjusting the gravity or ease of diopter adjustment via the elastic element, in particular together with the possibility of acoustic warning when changing the diopter adjustment, can effectively prevent unwanted adjustment of the diopter when using the eyecup. But at least an unintentional adjustment due to the audible warning signal ("click") can be noticed and reversed. If the corresponding eyepiece has an eyepiece housing with a diopter adjusting ring and an eyecup according to the first aspect of the invention, an instrument which is easy to handle and reliable with respect to the adjustment of the eyecup and the diopter is thus provided to the user.

Eyecup, eyepiece housing and eyepiece with Dioptrieeinstelleinrichtung are particularly suitable for use in microscopes. But also the use in binoculars, spotting scopes and telescopes is expressly pointed out.

In the following, an embodiment will explain the invention and its advantages in more detail with reference to the accompanying drawings.

The individual features of the invention explained above and below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the invention.

1 shows an eyecup with a suitable eyepiece housing according to the invention in the neckline as a longitudinal section,

2 shows a section of an eyepiece according to the invention with a device for diopter adjustment also in longitudinal section,

3 shows a perspective view of a section of an eyepiece with a device for diopter adjustment according to the invention,

4 shows an inventive eyepiece in a two-part view in plan view or as a longitudinal section and

5 shows the perspective view of an eyepiece eyecup according to the invention.

1 shows an eyecup in longitudinal section, for the sake of clarity, only the upper part is shown (see the general view according to 4 ). The eyecup 50 is substantially cylindrical and has an upper edge 54 to which a user usually leans the eyebrows or the spectacle lens into the eyepiece 70 (see. 4 ) to look. Accordingly, the upper edge should 54 be soft so that the lenses do not scratch. Furthermore, the eyecup has 50 a rear end 52 on top of a collar 53 is completed. In the inner surface of the cylindrical portion of the eyecup 50 is a multi-start internal thread 51 molded (for example, thread M42 × 2 6H, 12 starts). The eyecup 50 is molded in one piece from elastomeric material (here silicon rubber, hardness 70 ± 5 shore A) and can be prepared in a known manner by compression molding or injection molding.

It should be noted that here and below with the directional information above / front and bottom / rear respectively meant in the axial direction in the direction of the user or in the opposite direction away from the user.

1 shows the eyecup 50 in cooperation with a Dioptrieeinstellring 10 , It should be mentioned at this point again that instead of the Dioptrieeinstellrings 10 may also be an eyepiece housing, if the corresponding eyepiece has no Dioptrieeinstellring. The eyecup according to the invention is in principle also for eyepieces without Dioptrieeinstellring 10 suitable. The diopter adjustment ring 10 has an external thread 12 in which the internal thread 51 the eyecup 50 can intervene. Furthermore, the Dioptrieeinstellring has 10 a circumferentially extending undercut 13 whose axial extent on the front side of the external thread 12 , on the rear side of the axial stop 14 is limited.

In the axial direction are on the undercut 13 height markings 15 applied in 1 are shown only by way of example.

How out 1 apparent, the inner collar emerges 53 in the backstitch 13 of the diopter adjustment ring 10 one, leaving the collar 53 with the axial stop 14 defines a rear endpoint and the collar 53 with the rear portion of the external thread 12 defines a front end point, wherein between the two end points the eyecup is adjustable. The degree of (height) adjustment can be adjusted to the height markings 15 read off.

To put on the elastic eyecup 50 simply over the external thread 12 of the diopter adjustment ring 10 in principle, it is sufficient if the collar 53 this the external thread 12 overcomes. More suitable, however, is the placement of the eyecup 50 by pressing the same on the Dioptrieeinstellring 10 until the collar 53 on the circumferential axial stop 14 of the diopter adjustment ring 10 is pressed. This causes the eyecup 50 not tilted and properly in the thread 12 locks. By turning the eyecup 50 can now any meaningful distance from the front lens 60 (see. 4 ) to the edge 54 the eyecup 50 be set. The greatest possible distance is given by the fact that the collar 53 at the thread 12 noticeably strikes. To remove or replace the eyecup, this can be due to the soft and thus stretchable material on the external thread 12 to be pulled.

2 shows a section of an eyepiece in longitudinal section (see. 4 ) to illustrate the device for diopter adjustment. The Dioptrieeinstellring is again with 10 designated. At the far end 11 of the diopter adjustment ring 10 is a steel ring connected to it 20 with an internal toothing 21 admitted. At the outer diameter 31 of the fixed eyepiece part 30 there is an axially parallel groove 32 into which a springy steel wire 40 is embedded. The steel wire 40 is with its rear end 41 with the fixed eyepiece part 30 (see. 3 ) firmly connected. The other (front) end 42 here is slightly bent outward, leaving it in a groove of toothing 21 of the steel ring 20 locks. (See also the perspective view of the 3 .) The paraxial steel wire 40 also serves as an index line for the zero diopter adjustment.

3 shows the elements 2 again in a perspective view. Regarding the explanations on the individual elements, let me be 2 directed. On the diopter adjustment ring 10 there is a diopter scale 16 , by means of which the adjusted diopter number on the basis of the index line, given by the steel wire 40 (Extension of the direction of the steel wire 40 in the axial direction), can be read. Well visible in 3 the internal toothing 21 and the engagement of the steel wire 40 in the internal toothing 21 or in the individual grooves of this internal toothing 21 , By the detent is the set position of Dioptrieeinstellrings 10 held. The position does not need to be actively secured, which minimizes the risk of accidental adjustment. To adjust the diopter, only the resistance of the detent must be overcome. If this is (accidentally) the case, a (warning) click sound is audible. This sound is created by the re-engagement of the steel wire 40 in the internal toothing 21 , The resistance of the detent against misalignment can be designed in particular such that the diopter in a normal use of the eyecup 50 Be it through contact with the user or by adjusting the height of the eyecup 50 , remains unchanged or is difficult to adjust. As a result, the operating safety and ease of use compared to known such eyepieces can be significantly increased.

4 shows a two-part view of an eyepiece 70 , wherein in the lower half of a plan view, in the upper half of the corresponding section is shown in the longitudinal direction. The lower part of 4 shows from left to right (or from top to bottom for the user): the eyecup 50 , the altitude marks 15 on the diopter adjustment ring 10 , the diopter adjustment ring 10 and the fixed eyepiece part 30 with a clamping screw 71 for the tube on which the eyepiece 70 to attach. In the sectional view of the upper part of 4 is the eyecup 50 with its upper edge 54 as well as the internal thread 51 shown. 10 again designates the Dioptrieeinstellring, with respect to the details of Dioptrieeinstellrings 10 and the eyecup 50 to the explanations related to 1 is referenced. Supported in the axial direction is the eyepiece lens group 61 , which consists of two lens groups, the front lens with 60 is designated. The distance from the front of the front lens to the (radially extended) edge 54 the eyecup 50 gives the "height" of the eyecup 50 on, as indicated by the altitude markings 15 is reflected. By turning the diopter adjustment ring 10 around the axis of the eyepiece 70 becomes the thread 17 moved in the axial direction, that with the lens group 61 is firmly connected.

Regarding the relationship of the fixed eyepiece part 30 with the diopter adjustment ring 10 , in particular the locking mechanism of the steel wire 40 , to the explanations to 2 directed.

Further illustrated in 4 is a reticule 62 in a corresponding thread 63 is held. Such reticles 62 are structurally conditioned in the intermediate image plane of a microscope. Intermediate image and reticule 62 be with the eyepiece 70 considered. If both images are to be viewed simultaneously, users with diopter errors of the eye must be able to refocus the eyepiece lenses. This is done via the already explained Dioptrieeinstelleinrichtung. With 64 a roughness is suggested, which serves to avoid reflections in the intermediate image plane.

5 finally shows a perspective view of the eyepiece 70 with an eyecup 50 in the upper part, followed by a Dioptrieeinstellring 10 and the fixed eyepiece part 30 , On the fixed eyepiece part 30 is the axially aligned steel wire 40 to recognize, which can serve as an index line for the diopter adjustment.

The aspects of the eyecup and the Dioptrieeinstelleinrichtung invention complement each other, as shown by the 1 to 5 represented, ideally to an eyepiece according to the invention, which can be used not only in microscopes, but also binoculars, spotting scopes or telescopes and other similar optical instruments with advantage.

LIST OF REFERENCE NUMBERS

10

Dioptrieeinstellring; eyepiece

11

Rear end of Dioptrieeinstellrings

12

external thread

13

undercut

14

axial stop

15

height marker

16

dioptric

17

thread

18

Diopter adjustment device

20

Steel ring, metal ring

21

internal gearing

30

fixed eyepiece part

31

outer diameter

32

groove

40

Steel wire, metal wire, elastic element

41

rear end

42

front end, free end

50

Augenmuschel

51

inner thread

52

rear end

53

inner collar

54

Border (upper)

60

front lens

61

eyepiece

62

reticle

63

Thread for reticule

64

roughening

70

eyepiece

71

clamping screw

Claims (14)

Eyepiece housing with an eyecup ( 50 ) in the axial direction relative to the eyepiece housing ( 10 . 30 ) adjustable and from eyepiece housing ( 10 . 30 ) is removable, wherein the eyecup ( 50 ) in one piece and with a rising in the axial direction, in the eyecup ( 50 ) formed internal thread ( 51 ) provided with an external thread ( 12 ) of the eyepiece housing ( 10 . 30 ), characterized in that the eyecup ( 50 ) is at least partially elastically shaped such that by deformation of the corresponding portions of the eyecup ( 50 ) these from the eyepiece housing ( 10 . 30 ) or on the eyepiece housing ( 10 . 30 ), whereby the eyepiece housing ( 10 . 30 ) a circumferentially formed undercut ( 13 ), which in the axial direction on one side of the external thread ( 12 ) of the eyepiece housing ( 10 . 30 ), on the other side of an axial stop ( 14 ) on the eyepiece housing ( 10 . 30 ) and the eyecup ( 50 ) at one end ( 52 ) a circumferentially extending elastic inner collar ( 53 ), which is designed such that it in the undercut ( 13 ) of the eyepiece housing ( 10 . 30 immersed). Eyepiece housing according to claim 1, characterized in that the collar ( 53 ) completely over the circumference of the eyecup ( 50 ). Eyepiece housing according to claim 1 or 2, characterized in that the collar ( 53 ), in particular the entire eyecup ( 50 ), has sufficient elasticity to the removability the eyecup ( 50 ) from the eyepiece housing ( 10 . 30 ) to ensure. Eyepiece housing according to one of claims 1 to 3, characterized in that the eyecup ( 50 ) is made of an elastomer or rubber. Eyepiece housing according to one of claims 1 to 4, characterized in that the pitch of the internal thread ( 51 ) is selected such that a predetermined axial adjustment range by rotation of the eyecup ( 50 ) is traversable by less than 180 °, preferably by an angle between 90 ° and 180 °, more preferably by 120 °. Eyepiece housing according to one of claims 1 to 5, characterized in that on the undercut ( 13 ) in the axial direction height markings ( 15 ) are applied. Eyepiece housing according to one of claims 1 to 6, which has a Dioptrieeinstellring ( 10 ). Microscope with an eyepiece housing ( 10 . 30 ) according to one of claims 1 to 7. Eyepiece with a device ( 18 ) for diopter adjustment, which includes a diopter adjustment ring ( 10 ) rotatable about the axis of the eyepiece ( 70 ) is mounted for axial movement of a lens group ( 61 ) in the eyepiece ( 70 ), characterized in that the Dioptrieeinstellring ( 10 ) an internal toothing ( 21 ) along its circumference, and in that an axially oriented resilient metal wire ( 40 ) as an elastic element with its one end ( 41 ) on a fixed eyepiece part ( 30 ), the other, free end ( 42 ) of the resilient metal wire ( 40 ) in the internal toothing ( 21 ) of the diopter adjustment ring ( 10 ) engages in a locking manner. Eyepiece according to claim 9, characterized in that the internal toothing ( 21 ) on a metal ring ( 20 ) formed in the Dioptrieeinstellring ( 10 ) is admitted. Eyepiece according to claim 10, characterized in that on the Dioptrieeinstellring ( 10 ) a diopter scale ( 16 ) whose zero position in axial extension of the axially oriented metal wire ( 40 ) lies. Eyepiece according to one of claims 9 to 11, characterized in that the engagement of the resilient metal wire ( 40 ) in a groove of the internal toothing ( 21 ) when turning the Dioptrieeinstellrings ( 10 ) is acoustically perceptible. Eyepiece according to one of claims 9 to 12 with an eyepiece housing according to one of claims 1 to 6. Microscope with an eyepiece ( 70 ) according to one of claims 9 to 13.

Images