CN211653290U - Straight tube stereomicroscope - Google Patents

Abstract

The utility model discloses a straight-barrel stereomicroscope, which relates to the technical field of microscopes and comprises a host bracket and a microscope host arranged on the host bracket, wherein the microscope host comprises two zoom objective lenses and two eyepiece lenses which respectively correspond to two independent imaging light paths, and the imaging light paths directly enter the eyepiece lenses through a relay prism group along the axis of the zoom objective lenses; the axis of the eyepiece sleeve is parallel to the same plane where the axes of the two zoom objective barrels are located, and the zoom objective barrels are horizontally arranged. The utility model provides a current stereo microscope be difficult to carry out the problem of the observation of horizontal direction.

Description

Straight tube stereomicroscope

Technical Field

The utility model belongs to the technical field of microscope technique and specifically relates to a stereoscopic microscope.

Background

The stereomicroscope is a microscope which can simultaneously observe an object through two imaging light paths with different angles through a binocular tube, so that two eyes of a person can see upright stereoscopic images. The existing stereomicroscope comprises a base, a support rod, a host bracket, a microscope host and a locking hand wheel, wherein the microscope host is arranged on the host bracket, the host bracket can slide up and down along the vertically arranged support rod and is locked on the support rod through the locking hand wheel, the lower end of the support rod is fixed on the base, and the base is provided with an objective table with the upper end surface being a horizontal plane; the microscope host is provided with two zoom objective lens barrels and two eyepiece lens barrels, the zoom objective lens barrels are arranged in a host shell, the eyepiece lens barrels are respectively connected with the host shell through pupil distance adjusting barrels, the same plane where the axes of the two zoom objective lens barrels are located is vertically arranged and perpendicular to the upper end face of an objective table, in order to facilitate a user to observe a specimen placed on the objective table in a sitting posture state, a certain included angle is formed between the axis of the eyepiece lens barrels and the horizontal plane, the included angle is usually 45 degrees, and the included angle is shown in figure 1; a half pentagonal prism and a relay prism group are arranged on an imaging light path between the zoom objective lens barrel and the eyepiece lens barrel, the half pentagonal prism deflects the advancing direction of light rays by 45 degrees and is consistent with the direction of an eyepiece so as to be convenient for observation, and the relay prism group enables the light rays to rotate forwards and an object image after being reflected for multiple times so that a vertical image consistent with the direction of a specimen is observed on a focal plane of the eyepiece lens. With the production development, the stereoscopic microscope is used in many fields, but the stereoscopic microscope with the structure is not beneficial to the observation of human eyes or even can not observe when a sample on equipment needs to be observed on line from the horizontal direction due to a certain angle between the axis directions of the eyepiece barrel and the zoom objective barrel, so that the use occasions of the stereoscopic microscope are limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a straight section of thick bamboo stereoscopic microscope, this kind of microscope can solve current stereoscopic microscope and be difficult to carry out the problem of the observation of horizontal direction.

In order to solve the above problem, the utility model discloses a technical scheme is: the straight-barrel stereoscopic microscope comprises a host bracket and a microscope host arranged on the host bracket, wherein the microscope host comprises two zoom objective lenses and two eyepiece lenses which respectively correspond to two independent imaging optical paths, and the imaging optical paths directly enter the eyepiece lenses through a rotating image prism group along the axis of the zoom objective lenses; the axis of the eyepiece sleeve is parallel to the same plane where the axes of the two zoom objective barrels are located, and the zoom objective barrels are horizontally arranged.

In the above technical solution of the stereoscopic microscope, a more specific technical solution may be: the host bracket is arranged on the base, and the base is connected with the host bracket through a transverse focusing mechanism.

Furthermore, the transverse focusing mechanism is a gear and rack transmission mechanism connected between the host bracket and the base, a gear of the gear and rack transmission mechanism is fixed on the driving shaft, and a focusing hand wheel is arranged at the outer end of the driving shaft.

Further, the gear rack transmission mechanism comprises a helical gear and a helical rack which are meshed with each other.

Furthermore, the helical rack is connected with the host bracket, the helical gear is arranged in the base, and two ends of the driving shaft penetrate through the side walls of two sides of the base and are respectively connected with the two focusing hand wheels.

Furthermore, the lower end of the host bracket is fixedly provided with a slide rail arranged along the length direction of the helical rack, slide seats are fixed on two sides of the slide rail in the base, and the slide seats are connected with the slide rail in a sliding manner.

Furthermore, a sliding connecting piece is arranged between the sliding rail and the sliding seat, and the sliding connecting piece comprises two groups of round guide posts which are respectively fixed on the sliding rail and the sliding seat and a plurality of balls arranged between the two groups of round guide posts.

Furthermore, the round guide pillar is a steel wire, and two ends of the steel wire are fixed through screws.

Furthermore, the base is provided with a mounting hole.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:

1. the zoom objective lens barrel is horizontally arranged, corner imaging of the half pentagonal prism is cancelled, and the axis of the eyepiece barrel is parallel to the plane where the axes of the double zoom objective lens barrels are located, so that a microscope host is horizontally arranged, and a microscope user can observe a sample conveniently in the horizontal direction.

2. The base and the transverse focusing mechanism are arranged, so that rapid focusing and positioning can be realized.

3. The transverse focusing mechanism is a helical gear and rack mechanism, and can realize accurate focusing and locking.

4. The sliding rail and the sliding seat which are connected through the sliding connecting piece are arranged, so that the sliding performance of the host bracket relative to the base is improved.

5. The sliding connecting piece is structurally arranged, so that the sliding stability can be improved, and the blockage can be avoided.

6. The base is provided with a mounting hole, so that the base can be conveniently fixed on the equipment platform.

Drawings

Fig. 1 is a schematic structural diagram of a conventional stereoscopic microscope main unit.

Fig. 2 is a schematic structural diagram of an embodiment of the straight-barrel stereomicroscope.

Fig. 3 is a schematic diagram of the internal structure of the main body of the straight-tube stereo microscope.

Fig. 4 is an imaging optical path diagram of a direct-view stereomicroscope.

Fig. 5 is a cross-sectional view of the base and host tray taken along the line a-a in fig. 2.

Fig. 6 is an enlarged view at a in fig. 5.

Fig. 7 is a schematic view of a connection structure of the base and the slide rail.

Fig. 8 is a top view of fig. 7.

Fig. 9 is a cross-sectional view taken along the line B-B in fig. 7.

Fig. 10 is a schematic view showing a state of use of the direct stereomicroscope.

Reference numerals in the drawings indicate: 1. an eyepiece barrel; 1-1, ocular lens; 2. a pupil distance adjusting cylinder; 3. a host housing; 4. a host bracket; 4-1, locking the screw rod; 5. a base; 5-1, mounting holes; 6. a focusing hand wheel; 7. a relay prism set; 8. a zoom mechanism; 9. a zoom objective lens barrel; 9-1, zoom objective lens; 9-11, front fixed group; 9-12, zoom group; 9-13, compensation group; 9-14, a rear fixed group; 10. an object surface; 11. a slide rail; 12. a slide base; 13. a helical rack; 14. a helical gear; 15. a drive shaft; 16. a sliding connector; 16-1, a ball; 16-2, steel wires; 100. a microscope host; 200. an equipment platform.

Detailed Description

The invention will be described in more detail with reference to the following embodiments:

the stereoscopic microscope shown in fig. 2 to 5 mainly includes a microscope main body 100, a main body bracket 4, a base 5, and a horizontal focusing mechanism, wherein the microscope main body 100 is horizontally placed and locked and fixed on the main body bracket 4 by a locking screw 4-1, and the lower end of the main body bracket 4 is connected with the base 5 by the horizontal focusing mechanism. The microscope main body 100 comprises a main body shell 3, two zoom objective lens barrels 9, a zoom mechanism 8 and two relay prism groups 7 which are arranged in the main body shell 3, and two eyepiece barrels 1 which are arranged outside the main body shell 3, wherein the eyepiece barrels 1 are connected with the main body shell 3 through a pupil distance adjusting barrel 2. Two zoom objective lens barrels 9 in the host shell 3 are horizontally arranged, the axis of the eyepiece barrel 1 is parallel to the same plane where the axes of the two zoom objective lens barrels 9 are located, and the light through hole of the host shell 3 is arranged in the direction deviating from the eyepiece barrel 1, so that a sample can be observed conveniently from the horizontal direction. Because the eyepiece barrel 1 and the zoom objective barrel 9 are both arranged in a horizontal state, an imaging light path of the straight-barrel stereoscopic microscope directly enters the eyepiece barrel 1 through the rotating image prism 7 group along the axis of the zoom objective barrel 9. The relay prism assembly 7 of this embodiment is a puro II relay prism, which is formed by gluing two primary reflection right-angle prisms and a secondary reflection isosceles right-angle prism, and is used to convert an inverted image into an upright image. As shown in figure 4, the straight barrel stereo microscope is provided with two independent imaging light paths which respectively correspond to two zoom objective lens barrels 9 and two eyepiece lens barrels 1, the intersection point of the two imaging light paths is an imaging point positioned on an object plane 10, each optical system consists of three parts of a zoom objective lens 9-1, a relay prism group 7 and an ocular lens 1-1, the ocular lens 1-1 is inserted in the barrel body of the objective lens barrel 1, the relay prism group 7 is arranged in a host shell 3, the zoom objective lens 9-1 comprises a front fixed group 9-11 and a zoom group 9-12 which are arranged in the barrel body of the zoom objective lens barrel 9, the compensation groups 9-13 and the rear fixing groups 9-14 adjust the zooming mechanism 8 to drive the zooming objective lens barrel 9 to rotate, so that the zooming groups 9-12 and the compensation groups 9-13 move along a spiral line on the barrel body of the zooming objective lens barrel 9, and the functions of zooming and unchanging the conjugate distance of an object image are achieved.

As shown in fig. 5, 7 and 8, the transversal focusing mechanism between the host bracket 4 and the base 5 is a rack and pinion mechanism, which includes a helical rack 13 and a helical gear 14 engaged with each other. Still be provided with slide mechanism between host computer bracket 4 and base 5, for the convenience of processing and installation, slide mechanism includes through screwed connection in the slide rail 11 of host computer bracket 4 bottom and through two slides 12 of fix with screw on base 5, the length direction of slide rail 11 sets up along the direction that microscope host computer 100 working distance was adjusted, two slides 12 symmetries set up by slide rail 11 both sides, the length direction of slide 12 sets up along the length direction of slide rail 11. The helical rack 13 extends from one end of the slide rail 11 to the other end and is fixed at a groove at the bottom of the slide rail 11 through a screw; the helical rack 13 is meshed with a helical gear 14 arranged in the base 5, the helical gear 14 is sleeved and fixed on a driving shaft 15, and two ends of the driving shaft 15 penetrate through the side walls of two sides of the base 5 and are respectively connected with two focusing handwheels 6.

As shown in fig. 5, 6, 7 and 9, a certain gap is formed between the slide rail 11 and the slide carriages 12, the slide rail 11 and the two slide carriages 12 are connected by a set of slide connecting members 16, opposite sliding grooves are respectively formed on two sides of the slide rail 11 and opposite surfaces of the two slide carriages 12, and two ends of the sliding grooves respectively extend to two ends of the slide rail 11 and two ends of the slide carriages 12. Each group of sliding connecting pieces 16 comprises four circular guide columns and a plurality of balls 16-1, the four circular guide columns are steel wires 16-2 which are arranged in the opposite sliding grooves in a pairwise symmetry manner, each steel wire 16-2 is arranged along the length direction of the sliding groove, and two ends of each steel wire 16-2 are pressed and fixed through screws. A plurality of balls 16-1 are arranged between the four opposite steel wires 16-2 and can roll in a roller path formed by the four steel wires 16-2 in a surrounding way; the screws pressed at the two ends of the steel wire 16-2 are also used as limiting structures, so that the balls 16-1 are prevented from rolling out from the two ends.

As shown in fig. 10, the straight-barrel microscope is placed on the device platform 200 to observe a sample, and if only long-term fixed-point observation is needed, in order to avoid unnecessary movement, a mounting hole 5-1 may be formed in the base 5, and referring to fig. 5, the base 5 is fixed on the device platform 200 by a bolt inserted into the mounting hole 5-1, so that the objective lens of the microscope main body 100 is aligned with the sample. When the microscope is used, a user observes a sample from the horizontal direction through the eyepiece barrel 1 in a sitting posture, the helical gear 14 on the driving shaft 15 drives the helical rack 13 to move by rotating the focusing hand wheel 6, and the helical rack 13 drives the host bracket 4 and the microscope host 100 to move synchronously, so that the working distance from the microscope host 100 to the object plane 10 is adjusted to a proper position; then the zooming mechanism 8 is adjusted according to the observation requirement to obtain clear three-dimensional imaging.

Claims (9)

1. The utility model provides a straight section of thick bamboo stereoscopic microscope, includes the host computer bracket and installs microscope host computer on the host computer bracket, microscope host computer is including two zoom objective lens barrels and two eyepiece barrels that correspond two independent formation of image light paths respectively, its characterized in that: the imaging optical path directly enters the eyepiece barrel through the image rotating prism group along the axis of the zoom objective barrel; the axis of the eyepiece sleeve is parallel to the same plane where the axes of the two zoom objective barrels are located, and the zoom objective barrels are horizontally arranged.

2. The direct barrel stereomicroscope according to claim 1, wherein: the host bracket is arranged on the base, and the base is connected with the host bracket through a transverse focusing mechanism.

3. The direct barrel stereomicroscope according to claim 2, wherein: the transverse focusing mechanism is a gear and rack transmission mechanism connected between the host bracket and the base, a gear of the gear and rack transmission mechanism is fixed on the driving shaft, and a focusing hand wheel is arranged at the outer end of the driving shaft.

4. The direct barrel stereomicroscope according to claim 3, wherein: the rack and pinion transmission mechanism comprises a helical gear and a helical rack which are meshed with each other.

5. The direct barrel stereomicroscope according to claim 4, wherein: the helical rack is connected with the host bracket, the helical gear is arranged in the base, and two ends of the driving shaft penetrate through the side walls of two sides of the base and are respectively connected with the two focusing hand wheels.

6. The direct barrel stereomicroscope according to claim 5, wherein: the lower end of the host bracket is fixedly provided with a sliding rail arranged along the length direction of the helical rack, sliding seats are fixed on two sides of the sliding rail in the base, and the sliding seats are connected with the sliding rail in a sliding manner.

7. The direct barrel stereomicroscope according to claim 6, wherein: and a sliding connecting piece is arranged between the sliding rail and the sliding seat and comprises two groups of round guide posts which are respectively fixed on the sliding rail and the sliding seat and a plurality of balls arranged between the two groups of round guide posts.

8. The direct barrel stereomicroscope according to claim 7, wherein: the round guide pillar is a steel wire, and two ends of the steel wire are fixed through screws.

9. The direct barrel stereomicroscope according to any one of claims 2 to 8, wherein: the base is provided with a mounting hole.

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