CN2076242U - Stereoscopic microscope - Google Patents

Abstract

The utility model relates to a stereoscopic microscope, in particular to a stereoscopic microscope which has an inclined eyepiece sleeve through turning and refracting the light path. A structure with two rectangular prisms and a plane reflecting mirror is used for the stereoscopic microscope as a structure for turning and refracting the light path. The light beam is inverted with image through passing through the two rectangular prisms vertically and is turned with the direction through the plane reflecting mirror installed slantways. Consequently the stereoscopic microscope has advantages of simple structure, compact volume, and easy fabrication; the turning angle of eyepiece can be design into an arbitrary value, and the aberration caused by the prisms can be controlled within the minimum range; the stereoscopic microscope can reach the general technical requirements, and the manufacturing cost can be reduced, so that the stereoscopic microscope can meet the requirements of mass production, especially the export products.

Description

Stereoscopic microscope

The utility model is about stereomicroscope, and particularly light path makes the utility model of the stereomicroscope of eyepiece stalk inclination through turnover.

The eyepiece of stereomicroscope has formula vertically upward, and tilting is also arranged.The stereomicroscope of inclination eyepiece, thing light must be through the turnover respective angles to enter the eyepiece of inclination, simultaneously will be once as so that observe erect image by eyepiece.Light path turnover and inverted image structure commonly used at present generally have Si Mite prism system, half pentagonal prism to add turnover, inverted image modes such as two right-angle prism systems, completely reflecting mirror system, inclination right-angle prism system.In the aforesaid way, the Si Mite prism is applicable to the stereomicroscope of big object lens.Because it is poor that it can not proofread and correct left and right image aspect, inapplicable for the crossing certain angle of left and right optical system with the stereomicroscope (promptly adopting the stereomicroscope of two little object lens) that causes stereoscopic result, and this prism processing request is higher.Half pentagonal prism adds in the turnover, inverted image system of two right-angle prisms, the refractive power road effect that runs up of half pentagonal prism, and two right-angle prisms play the inverted image effect, owing to increased optical element, corresponding physical construction also will increase.Therefore structure is complicated, and volume also increases, and is also difficult in the moulding, so cost also will improve.Above-mentioned two methods all only are suitable for 45 ° of deflections, the arbitrarily angled difficulty of deflection.Completely reflecting mirror turnover inverted image system has this mode of employing abroad, and it requires high especially to machining, can not come correction error by the assembling adjustment simultaneously, and therefore general processing technology level is difficult to accomplish.2 right-angle prisms are adopted in the turnover of inclination right-angle prism, and its structure is simpler, but because optical axis is the oblique wherein prism that tiltedly goes out, in the visual field vertical direction very big additional aberration are arranged, and when especially the eyepiece pitch angle was big, this aberration was more obvious.

The purpose of this utility model just provides a kind of stereomicroscope that adopts novel light path replicated structures.It both can provide positive stereoeffect, and instrumentality-as the relative orientation corner easily so just can be proofreaied and correct left and right kine bias and change again, and can make light beam steering arbitrarily angled and therefore do not influence picture element.Simultaneously, its overall dimensions is less, and processing request is not high yet.Therefore the especially left and right system of stereomicroscope that is fit to produce in enormous quantities is mutually angle to cause the microscope of stereoeffect.

The utility model is for achieving the above object, and adopted right-angle prism to add the structure of plane mirror, and its relative position has been carried out certain arrangement.Its structure arrangement is as follows: little right-angle prism of light beam vertical incidence (also available 45 ° of plane mirrors that tilt to install replace), the light beam that goes out from little prismatic reflection vertically enters a big right-angle prism, and carry out secondary reflection and vertically penetrate, plane mirror that tilts to install of light beam directive is reflected into eyepiece at a certain angle then.Like this, reach and can transfer and can inverted image, simultaneously since optical axis be vertical prism surface into and out of because the serious aberration that the turnover of tilting causes does not just have.During adjustment, if transfer big prism just can, when especially proofreading and correct the mutual deflection angle in left and right image planes orientation, as long as half of big prisms tilted installation deflection angle error amount just can.

Below utilize a kind of embodiment of the present utility model and accompanying drawing to be further explained.

The basic structure of having drawn novel stereomicroscope in the accompanying drawing.Fig. 1 is the schematic perspective view of this microscope light path system.Fig. 2 is a side view.Fig. 3 is a top view.Fig. 4 is a front elevation.

As seen from the figure, this stereomicroscope is that left and right system respectively adopts little object lens, and left and right system is mutually 12 ° of angles.People's eyes will produce stereoscopic result by total system.Its eyepiece to vertical direction cant angle theta angle so that people operation and observing.The turnover of light beam is just adopted and is gone up the described replicated structures of joint.Thing light enters microscope by micro objective (1), arrives little prism (2), and its optical axis enters little prism perpendicular to the bottom surface of little prism, is reflected into horizontal light beam through the inclined-plane, leaves perpendicular to another right angle face of little prism.This beam optical axis enters big prism perpendicular to the inclined-plane of big prism (3) then, and through the reflection of its two right angle faces, leaves perpendicular to the inclined-plane, and arrive plane mirror (4).Because catoptron becomes 2 θ angle lappings tiltedly to install with vertical direction, so the optical axis of folded light beam just becomes on the θ angle with vertical direction to reflect, and enters eyepiece.In this microscope, optical axis is all perpendicular to each prism facets turnover, the therefore additional aberrations that does not cause because of the beam optical axis oblique incidence.Simultaneously, the deviation of optical axis is born by plane mirror, and it does not increase any aberration yet.In addition, because there are 12 ° of angles in left and right system, add eyepiece inclination certain angle again, the orientation of left and right picture, can slightly rotate big prism (3) and proofread and correct this gun parallax in native system inconsistent, makes the orientation unanimity of left and right picture.The tiltangle of its eyepiece (5) can be selected arbitrary value, as long as the corresponding established angle that changes plane mirror (4) is (90 °-θ 12), so its versatility is extremely strong.

Because the light path replicated structures has been carried out above-mentioned design, make that this stereomicroscope is simple in structure, volume is compact, makes easily, and its eyepiece turning angle can be chosen wantonly, and versatility is stronger, is to adopt fixed prism turnover institute inaccessible at present.Because optical axis is vertically to go out, go into prism, the aberration that is caused by prism also can be controlled in minimum.Therefore this kind stereomicroscope can reach general technical requirement, and manufacturing cost can reduce again, can satisfy production in enormous quantities, especially the requirement of exported product.

Claims (5)

1, stereomicroscope, particularly eyepiece stalk is to the stereomicroscope at vertical bank θ angle, left and right symmetry is equipped with two light path turnovers and inverted image structure on it, it is characterized in that: this light path turnover and inverted image structure adopt big young waiter in a wineshop or an inn's piece isosceles right-angle prism and plane mirror.

2, microscope as claimed in claim 1 is characterized in that: little prism is mounted to that edged surface is downward always, and half of another right angle face and big prism inclined-plane parallels and be approaching; Big prism side is downward, and inclined-plane and two right angle faces are all vertical; Plane mirror is to 12 jiaos of installations of 45 °-θ of horizontal tilt, directly to big prism inclined-plane second half.

3, as the microscope of claim 1 or claim 2, it is characterized in that: the downward right angle face of the little prism of beam optical axis vertical incidence that object lens come, light beam enters big prism through the inclined-plane reflection from the vertical ejaculation of another right angle face and perpendicular to big prism inclined-plane, behind secondary reflection, vertically leave big prism inclined-plane, this light beam is again through plane reflection, the angled upward eyepiece that injects.

4, microscope as claimed in claim 1 is characterized in that: big prism can slightly rotate a low-angle to proofread and correct the deflection difference of left and right image aspect.

5, microscope as claimed in claim 1 is characterized in that: little prism can be installed with a plane mirror angle at 45 and replace.

Images