Eyepiece capable of adjusting diopter and eyeshade height

Abstract

The utility model discloses an eyepiece capable of adjusting diopter and eyeshade height, and relates to the field of microscopes. The eyepiece comprises an eyepiece seat, an eyeshade is arranged at the upper end of the eyepiece seat, a horn-shaped eye bearing cover is arranged at the upper end of the eyeshade, and the eyeshade is in threaded connection with the eyepiece seat; a diopter focusing ring is sleeved outside the eyeshade in a clearance mode, the diopter focusing ring is fixedly connected with the upper end of a diopter adjusting cylinder installed at the lower end of the diopter focusing ring, the middle of the diopter adjusting cylinder is fixedly connected with the lower end of the eyepiece seat, and the lower portion of the diopter adjusting cylinder is connected with a rear connecting seat through threads. Compared with the prior art, the visual acuity of the eyepiece and the height of the eyeshade can be adjusted, the focal length of the system can be adjusted through the eyepiece with the adjustable visual acuity so as to adapt to the vision difference of different users, and clear imaging can be achieved without wearing glasses; the eyeshade with the adjustable height can help the eyes of the user to keep a proper distance from the eyepiece and ensure that the eyes are within an exit pupil distance range designed by the microscope, and incomplete view or blurred imaging caused by distance deviation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to microscope technical field especially, one kind is adjustable diopter and eyecup height's eyepiece. BACKGROUND

[0002] The stereomicroscope usually has two eyepieces, provides stereovision, is often used in biology, medicine, industry detection etc. field, and the design of eyepiece directly influences observation experience and imaging effect. The traditional stereomicroscope generally includes eyepiece barrel, fixed eyecup installed on the upper end of the eyepiece barrel, rear adapter connected with the microscope main body through thread or buckle, and the rear adapter is sleeved outside the eyepiece barrel. The focal length of the traditional eyepiece lens is fixed, and myopic or hyperopic users need to wear glasses to observe, otherwise the imaging is blurred, which inevitably limits the user group and cannot adapt to the vision difference. The eyecup height is fixed, and the exit pupil distance cannot be adjusted. If the user's eye position deviates from the design value, it will cause the edge of the field of view to be blurred or a black shadow to appear, and the stereoscopic effect of observation will also be weakened. SUMMARY

[0003] The utility model aims at providing a kind of eyepiece of adjustable diopter and eyecup height, it can solve the problem of traditional eyepiece eyecup height fixed and diopter fixed.

[0004] To solve the above problems, the utility model adopts the technical scheme of: this kind of adjustable diopter and eyecup height's eyepiece, including the eyepiece seat of being equipped with lens, is equipped with eyecup on the upper end of the eyepiece seat, the upper end of the eyecup is equipped with the eye portion of the trumpet-shaped receiving cover, the trumpet-shaped eye portion of the trumpet-shaped receiving cover opens outward, and the eyecup is connected with the outer thread of the eyepiece seat by inner thread;A diopter focusing ring is sleeved in the gap outside the eyecup, the diopter focusing ring is fixedly connected with the upper end of the diopter adjusting cylinder installed in its lower end, the middle part of the diopter adjusting cylinder is fixedly connected with the lower end of the eyepiece seat, and the lower part of the diopter adjusting cylinder is connected with the rear adapter by thread.

[0005] In the above technical scheme, the more specific technical scheme can also be: the inner side lower end of the eye portion of the trumpet-shaped receiving cover is equipped with a platform protruding towards the center, and the outer side of the lower end of the eye portion of the trumpet-shaped receiving cover is equipped with a snap ring, which is clamped into the cartridge provided in the inner side of the top end of the eyecup.

[0006] Further, a layer of glue is provided in the cartridge in the inner side of the top end of the eyecup and the snap ring.

[0007] Further, the bottom end of the eyecup is provided with a protrusion extending outward, the upper section of the diopter adjusting cylinder has an inner diameter larger than an outer diameter of the protrusion, and the upper section of the diopter adjusting cylinder is provided with a clamping post extending outward on the outer side thereof; the middle section of the diopter adjusting cylinder is bent inward and downward at a right angle, the inner diameter of the vertical section of the middle section of the diopter adjusting cylinder is matched with the outer diameter of the eyepiece seat, and the bottom end of the eyepiece seat is pressed on the protruding ring.

[0008] Further, the rear connector is provided with a support post extending outward on the top end thereof, the support post is provided with a groove on the top surface thereof, and a diopter ring is sleeved on the support post in a clearance fit manner, the diopter ring is provided with a clamping block corresponding to the groove on the bottom thereof, and the clamping block is inserted into the groove.

[0009] Further, a layer of glue is arranged between the clamping block and the groove.

[0010] Further, the outer diameter of the diopter focusing ring is matched with the inner diameter of the diopter ring.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The eyecup with adjustable height is arranged on the upper end of the eyepiece, and the eyecup is provided with a horn-shaped eye receiving cover on the upper end, which can help the user's eyes to keep a proper distance from the eyepiece, ensure that the user's eyes are within the "exit pupil distance" range of the microscope, avoid incomplete field of view or imaging blur caused by distance deviation, and ensure that the user's eyes are within the "exit pupil distance" range of the microscope.

[0013] 2. The diopter-adjustable eyepiece can adjust the system focal length to adapt to the vision difference of different users, and clear imaging can be achieved without wearing glasses. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model.

[0015] Figure 2 is a structural schematic view of the utility model arranged on a stereomicroscope.

[0016] Number Description:

[0017] Eye department accepts cover 1, annular platform 1-1, snap ring 1-2, eye cover 2, boss 2-1, visual focus ring 3, visual ring 4, clamping block 4-1, rear seat 5, support table 5-1, recess 5-2, visual adjustment cylinder 6, clamping table 6-1, eyepiece seat 7, eyepiece seat 8, pressure ring 9. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the present application more easily understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the concept of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0019] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0020] As Figures 1-2The adjustable eyepiece with adjustable diopter and eyecup height shown includes an eyepiece base 7 with lenses, an eyecup 2 at the upper end of the eyepiece base, and a flared eye support cover 1 at the upper end of the eyecup 2. The flared eye support cover has an outward opening. The eyecup 2 is connected to the eyepiece base 7 by an internal thread and an external thread. A diopter focusing ring 3 is fitted around the outer gap of the eyecup 2. The diopter focusing ring is fixedly connected to the upper end of a diopter adjustment cylinder 6 installed at its lower end. The middle part of the diopter adjustment cylinder is fixedly connected to the lower end of the eyepiece base 7. The lower part of the diopter adjustment cylinder 6 is connected to a rear connector 5 by a thread. The lower inner side of the eye support cover has an annular platform 1-1 that protrudes towards the center. The lower outer side of the eye support cover 1 has a retaining ring 1-2 that engages with a retaining slot on the inner side of the top of the eyecup 2 and is glued together to form a whole. The bottom periphery of the eye mask 2 has an outwardly protruding boss 2-1. The inner diameter of the upper section of the diopter adjustment cylinder is larger than the outer diameter of the boss 2-1. The upper section of the diopter adjustment cylinder 6 has an outwardly protruding locking platform 6-1 on its outer side. The middle section of the diopter adjustment cylinder 6 is bent inward and downward at right angles. The inner diameter of the vertical section of the bent middle section of the diopter adjustment cylinder 6 fits with the outer diameter of the eyepiece base 7. An inwardly protruding convex ring is provided at the junction of the vertical section and the bottom end of the eyepiece base 7. The bottom end of the eyepiece base 7 is pressed against this ring. The convex ring is glued and fixed into one piece; the rear seat 5 has an outwardly extending support platform 5-1 at its top, and an annular groove 5-2 is provided on the top surface of the support platform. A diopter ring 4 is sleeved on the support platform and the diopter adjustment cylinder 6 with a gap. The diopter ring is sleeved on the outside of the locking platform 6-1. A locking block 4-1 corresponding to the groove 5-2 is provided at the bottom of the diopter ring. The locking block 4-1 is inserted into the groove 5-2; the outer diameter of the diopter focusing ring 3 is larger than the inner diameter of the diopter ring 4.

[0021] During eyepiece assembly, firstly, glue the lower outer diameter of the eyepiece base 7 to the convex ring of the diopter adjustment cylinder 6 to fix them together. Then, place the lens used for the eyepiece into the eyepiece base 7 and fix it with the pressure ring 9. Screw the lower outer diameter thread of the diopter adjustment cylinder 6 to the lower inner diameter thread of the rear connector 5. Then, put the diopter ring 4 into the upper end of the diopter adjustment cylinder 6 and insert the lower end locking block 4-1 of the diopter ring 4 into the groove 5-2 at the upper end of the rear connector 5, and glue them together to fix them together. Then, screw the upper outer diameter thread of the eyepiece base 7 into the inner diameter thread of the eyecup 2. Put the diopter focusing ring 3, whose outer diameter is larger than the inner diameter of the diopter ring 4, into the outer diameter of the eyecup 2 from the upper end of the eyecup 2 from top to bottom until the ring at the lower end of the diopter focusing ring 3 fits into the upper inner diameter of the diopter adjustment cylinder 6, and then glue them together to fix them together. Rotating the diopter focusing ring 3 will cause the diopter adjustment cylinder 6, eyepiece mount 7, and eyecup 2 to move axially relative to the diopter ring 4 and the rear connector 5 to achieve the function of adjusting the diopter of the eyepiece. The upper limit of the rotation is when the lower edge of the upper boss of the inner diameter of the diopter ring 4 abuts against the upper edge of the locking platform 6-1 of the diopter adjustment cylinder 6; the lower limit of the rotation is when the upper edge of the inner diameter thread of the rear connector 5 abuts against the lower edge of the outer diameter thread relief groove of the diopter adjustment cylinder 6.

[0022] Finally, the lower end retaining ring 1-2 of the eyepiece holder 1 is inserted into the buckle on the inner side of the top of the eyepiece 2 and secured with glue. This allows the user to directly place their eye on the upper end of the eyepiece holder 1 to observe the clear three-dimensional imaging effect of the stereomicroscope. The upper end and outer surface of the eyepiece holder 1 are made of rubber or soft material to improve user comfort and reduce eye fatigue during prolonged use. The inner diameter thread of the eyepiece 2 is connected to the outer diameter thread of the eyepiece base 7. When the user rotates the eyepiece holder 1, it will cause the eyepiece 2 to move axially relative to the eyepiece base 7 and the diopter focusing ring 3, thereby changing the height of the eyepiece to help different users maintain an appropriate distance between their eyes and the eyepiece, ensuring that the user can see a clear imaging effect in the entire field of view. When adjusting the height of the eye mask 2, the upper limit of rotation is when the lower edge of the diopter focusing ring 3 abuts against the upper edge of the lower protrusion 2-1 of the eye mask 2, and the lower limit of rotation is when the upper edge of the diopter focusing ring 3 abuts against the lower edge of the eye support cover 1. Figure 2 As shown, when using the eyepiece, the user needs to insert the lower end of the eyepiece mount 5 into the eyepiece mount 8 at the upper end of the stereomicroscope, and then gently place the eye on the upper end of the eyepiece support 1. If the sample cannot be seen clearly with both eyepieces at the same time, the diopter focusing ring 3 can be rotated accordingly. The diopter value can be changed between the values ​​corresponding to the upper and lower limits, and the focal plane of the eyepiece will also change accordingly, thus adapting to the focal length of various human eyes. If the field of view is incomplete or there are dark shadows at the edges, the corresponding eyepiece support 1 can be rotated to adjust the height of the eyepiece 2 to find the appropriate exit pupil distance for various human eyes. Usually, the exit pupil distance is 10-15 mm, so as to produce the clearest image in the entire field of view and achieve the best visual effect.

Claims

1. An eyepiece with adjustable diopter and mask height, comprising an eyepiece holder with a lens, a mask being arranged on the upper end of the eyepiece holder, characterized in that: The upper end of the eyecup is provided with a horn-shaped eye receiving cover, the opening of which is outwardly flared, the eyecup is connected with the eyepiece seat through internal thread and external thread, a diopter focusing ring is sleeved on the outer gap of the eyecup, the upper end of the diopter focusing ring is fixedly connected with a diopter adjusting cylinder installed at the lower end of the diopter focusing ring, the middle part of the diopter adjusting cylinder is fixedly connected with the lower end of the eyepiece seat, and the lower part of the diopter adjusting cylinder is connected with a rear adapter through thread.

2. The adjustable vision and eye shield height eyepiece of claim 1, wherein: The inner side of the lower end of the eye receiving cover is provided with a ring-shaped platform protruding towards the center, and the outer side of the lower end of the eye receiving cover is provided with a snap ring which is clamped into the thimble provided on the inner side of the top end of the eyecup.

3. The adjustable vision and eye shield height eyepiece of claim 2, wherein: A layer of glue is arranged between the thimble on the inner side of the top end of the eyecup and the snap ring.

4. The variable vision and eye shield height eyepiece of claim 1, wherein: The bottom end of the eyecup is provided with a boss protruding outward, the inner diameter of the upper segment of the diopter adjusting cylinder is greater than the outer diameter of the boss, the outer side of the upper segment of the diopter adjusting cylinder is provided with a clamping platform protruding outward, the middle segment of the diopter adjusting cylinder is bent at a right angle inward and downward, the inner diameter of the vertical segment of the middle segment of the diopter adjusting cylinder is matched with the outer diameter of the eyepiece seat, a protruding ring is arranged at the joint between the vertical segment and the bottom end of the eyepiece seat, and the bottom end of the eyepiece seat is press-fitted on the protruding ring.

5. The adjustable vision and eye shield height eyepiece of claim 4, wherein: The top end of the rear adapter is provided with a support platform protruding outward, the top surface of the support platform is provided with an annular groove, a diopter ring is sleeved on the support platform and the outer gap of the diopter adjusting cylinder, the diopter ring is sleeved on the clamping platform, the bottom of the diopter ring is provided with a ring of clamping blocks corresponding to the groove, and the clamping blocks are inserted into the groove.

6. The adjustable vision and eye shield height eyepiece of claim 5, wherein: A layer of glue is arranged between the clamping blocks and the groove.

7. The adjustable vision and eye shield height eyepiece of claim 5, wherein: The outer diameter of the diopter focusing ring is greater than the inner diameter of the diopter ring.

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