CN202235302U

CN202235302U - Rotating mechanism for slit-lamp microscope

Info

Publication number: CN202235302U
Application number: CN2011203615724U
Authority: CN
Inventors: 张秀丽; 王红坤; 刘忠祥
Original assignee: YUNNAN YUN'AO OPTOELECTRONICS CO Ltd
Current assignee: YUNNAN YUN'AO OPTOELECTRONICS CO Ltd
Priority date: 2011-09-26
Filing date: 2011-09-26
Publication date: 2012-05-30
Anticipated expiration: 2021-09-26

Abstract

The utility model discloses a rotating mechanism for a slit-lamp microscope, which is mainly used on a medical care instrument of the slit-lamp microscope. The rotating mechanism has the main technical scheme that a cutting edge is fixed on a cutting edge frame in a casing, the cutting edge frame is connected into the casing, a group of lenses are arranged above the cutting edge and are arranged in an inner tube, the inner tube and an outer tube are in threaded connection , a prism is arranged above the inner tube and is tightly fastened in a prism seat, a hand wheel is sheathed outside the outer tube, a guide nail is connected with the prism seat through screw threads, a lens is arranged on the prism, the prism is pasted in a lens frame and is fixedly arranged in a sleeve barrel, the sleeve barrel is connected with the outer tube through screws, and the top of the sleeve barrel is provided with an image rotating prism. According to the utility model, the use effect proves that the defects of high installation and regulation difficulty and high production cost of the original mechanism are fundamentally overcome. The structure is effectively simplified, the production cost is reduced, and the batch production requirement is completely met.

Description

A kind of rotating mechanism that is used for slit lamp microscope

Technical field

This utility model belongs to a kind of ray machine rotating mechanism, is mainly used on the Medical Instruments slit lamp microscope.

Background technology

Slit lamp microscope is by the optics amplification principle, the optical instrument of inspection eyes front portion and inner pathological changes.As the neat optical section that relies on slit lamp to project, the accurate inspection of pathological changes such as corneal, eyelid, anterior chamber, sclera, iris, crystalline lens, vitreous body and retina.Its operation principle (see figure 1): light source 1 shines on the edge of a knife 3 through condenser lens 2, and the light of seam outgoing is imaged on and is examined target (patient's eyes) 7 places through after lens 4,5 and the image rotation prism 6 from the edge of a knife 3 cracks; Become slit of illumination irradiation patient's eyes; The doctor promptly can be observed a certain tangent plane of eyes through microscope 8, the rotation edge of a knife 3; Just can observe other arbitrary tangent, for eyes are done comprehensive inspection.The concrete structure of the rotating mechanism of this slit lamp microscope (seeing Fig. 2,3): the edge of a knife 3 is connected on the edge of a knife seat 10 through screw 9; Edge of a knife seat is installed on the moving-coil 12 through steel ball 11, spring, and the toothed disc 13 of moving-coil 12 tops is fixing with moving-coil 12 through screw 14; Surely enclosing 15 grinds with moving-coil 12 and to cooperate; Be connected on the housing 18 with trim ring 16 and screw 17, handwheel 20 is assembled on the housing 18 through screw 17 and axle sleeve 21, and adjustment cooperates with toothed disc 13.Rotation hand wheel 20 during use, and driven gear dish 13 and a whole set of edge of a knife system can do 180 ° of rotations, make crack seam C do 180 ° of rotations, obtain the slit of illumination of 360 ° of arbitrary tangents.

In this structure, in order to guarantee the needs of precision, fixed circle will grind with moving-coil and cooperate, and decides circle, moving-coil and toothed disc and is copper material, and part processing and material cost are higher; When the assembling adjustment, be the gap that guarantees toothed disc and decide to have between the circle, need adjustment repeatedly, resetting difficulty is big, and is time-consuming, can not satisfy the demand of batch process.

Summary of the invention

The technical problem underlying that this utility model will solve is: according to the defective that existing slit lamp microscope rotating mechanism exists, design a kind of simple in structure, be convenient to assemble the ray machine rotating mechanism of adjustment, replace original mechanism.Reach and reduce cost, shorten the production cycle and adapt to batch production requirement.

The main technical schemes of this utility model is: a, in housing, the edge of a knife is installed behind condenser lens, and the edge of a knife is fixed on the edge of a knife frame through screw, and spring penetrates the hole of edge of a knife frame and is fixed tightly on the edge of a knife frame, and edge of a knife frame is connected in the housing through guide and pin; There is one group of lens b, edge of a knife top, are pressed in the inner core through trim ring, and the lower end of inner core is threaded with urceolus; There is a prism c, inner core top, and prism is fixed tightly in the prism table through non-magnetic shim and pad; D, handwheel sleeve are in the outside of urceolus, and guide pin passes the via hole of handwheel, the regulating tank of urceolus, connect together with the prism table screw thread; E, lens are installed above the prism, lens are bonded in the lens frame, and lens frame is fixed in the sleeve through screw thread, and sleeve and urceolus are fixed through screw; Image rotation prism is installed through press strip in f, sleeve top.

This utility model proves through practical application: compare with former rotating mechanism, simplify the structure, be convenient to assembling and adjustment; Part material is produced with steel or aluminium, can be fully without copper material, and part processing precision requires general, and production cost reduces significantly; Because assembling and adjustment do not have complex original and difficulty big, the production cycle obviously shortens, and can adapt to the demand of batch process fully.

Description of drawings

Below in conjunction with accompanying drawing, this utility model is done to describe in further detail.

Fig. 1 is the operation principle sketch map of slit lamp microscope.

Fig. 2 is the structure chart of the rotating mechanism (saving parts such as sequence number 4,5,6) of existing slit lamp microscope.

Fig. 3, the A-A that is Fig. 2 is to view.

Fig. 4 is the assembly structure figure of this utility model, also is the operation principle sketch map that this utility model is used for slit lamp microscope.

Fig. 5, the B-B that is Fig. 4 is to view.

Fig. 6 is the local expanded view of this utility model urceolus 35.

The specific embodiment

With reference to Fig. 4,5,6, the main technical schemes of this utility model is described: this utility model is made up of parts such as light source 1, condenser lens 2, the edge of a knife 3, edge of a knife frame 22, housing 23, spring 24, guide 25, pin 26, lens 4, trim ring 33, inner core 34, urceolus 35, prism 36, non-magnetic shim 37, pad 38, prism table 39, handwheel 40, guide pin 41, lens 42, lens frame 43, sleeve 44, image rotation prisms 6.Concrete structure is: a, in housing 23; The edge of a knife 3 is installed behind condenser lens 2; The edge of a knife 3 is fixed on (see figure 5) on the edge of a knife frame 22 through screw 12, and spring 24 penetrates the hole of edge of a knife frame 22 and is fixed tightly on the edge of a knife frame, and edge of a knife frame 22 is connected to (see figure 4) in the housing 23 through guide 25 and pin 26; There is one group of lens 4 b, the edge of a knife 3 tops, are pressed in the inner core 34 through trim ring 33, and the lower end of inner core 34 is threaded with urceolus 35; There is a prism 36 c, inner core 34 tops, and prism 36 is fixed tightly in the prism table 39 through non-magnetic shim 37 and pad 38; D, handwheel 40 are enclosed within the outside of urceolus 35, and guide pin 41 passes the via hole of handwheel 40, the regulating tank D (see figure 6) of urceolus 35, connects together with prism table 39 screw threads; Lens 42 are installed above the e, prism 36, and lens 42 are bonded in the lens frame 43, and lens frame 43 is fixed in the sleeve 44 through screw thread, and sleeve 44 and urceolus 35 are fixed through screw; Image rotation prism 6 is installed through press strip in f, sleeve 44 tops.

The described edge of a knife 3 is a kind of technological means that are used to obtain slit of illumination in the optics industry, and light source is through the neat slit C (see figure 5) between two blocks, and it is slit of illumination that the edge of a knife of formation looks like.

The described edge of a knife 3; Its mounting means is a kind of common mode; Concrete structure is (seeing Fig. 4,5): the laterally zygomorphic edge of a knife 3 usefulness screws 12 are connected on the edge of a knife frame 22; Spring 24 penetrates the hole of edge of a knife frame 22 and is fixed tightly on the edge of a knife frame, and edge of a knife frame 22 is connected in the housing 23 through guide 25 and pin 26; Both sides at housing 23; Through major axis 29, axle sleeve 28 and non-magnetic shim two small handwheels 27 are housed; Cam 31 is fixed to the middle part of major axis 29 through screw, and two limited posts 30 are connected to edge of a knife frame 22 sides through screw, and going up along axle has a spacing collar 32 below cam.This structure function is: through the rotation small handwheel, the cam that drives on the major axis rotates, and cam makes limited post move along cam locus when rotating, and drives edge of a knife motion, makes the width size of the crack seam C of the edge of a knife obtain adjustment.

With reference to Fig. 4,6, the characteristics of this utility model are: light source 1 shines the edge of a knife 3 through condenser lens 2; The edge of a knife through 36 rotations of the prism between two groups of lens, can make edge of a knife picture (slit of illumination) rotation through lens 4,42 imagings; Prism 36 has and keeps the emergent ray advantage consistent with the incident ray direction, and when the prism angle [alpha] of pivoting, emergent ray is anglec of rotation α also; This light after image rotation prism 6 reflection, the angle of just having rotated 2 α, so prism 36 half-twists; Just can realize crack Rotate 180 ° (with the crack Rotate 180 of symmetrical °, the actual assurance all can obtain slit of illumination in 360 ° of scopes), satisfy instructions for use.

With reference to Fig. 4,6; The work process of this utility model: under the fixed condition of slit lamp microscope, rotation hand wheel 40 is through the prism 36 in the guide pin 41 drive lip microscope bases 39; Make the scope internal rotation of prism 36, thereby the slit of illumination of being examined the acquisition rotation of target 7 places is thrown light at the regulating tank D of urceolus 35.Through microscope 8, promptly can be observed a certain tangent plane or other arbitrary tangent of eyes, eyes are done comprehensive inspection.

Claims

1. a rotating mechanism that is used for slit lamp microscope contains light source (1), condenser lens (2), the edge of a knife (3), lens (4), and image rotation prism (6) is characterized in that:

A, in housing (23); The edge of a knife (3) is installed behind condenser lens (2); The edge of a knife (3) is fixed on the edge of a knife frame (22) through screw (12); Spring (24) penetrates the hole of edge of a knife frame (22) and is fixed tightly on the edge of a knife frame, and edge of a knife frame (22) is connected in the housing (23) through guide (25) and pin (26);

There are one group of lens (4) b, the edge of a knife (3) top, are pressed in the inner core (34) through trim ring (33), and the lower end of inner core (34) is threaded with urceolus (35);

There is a prism (36) c, inner core (34) top, and prism (36) is fixed tightly in the prism table (39) through non-magnetic shim (37) and pad (38);

D, handwheel (40) are enclosed within the outside of urceolus (35), and guide pin (41) passes the via hole of handwheel (40), the regulating tank (D) of urceolus (35), connect together with prism table (39) screw thread;

Lens (42) are installed above e, the prism (36), and lens (42) are bonded in the lens frame (43), and lens frame (43) is fixed in the sleeve (44) through screw thread, and sleeve (44) is fixed through screw with urceolus (35);

Image rotation prism (6) is installed through press strip in f, sleeve (44) top.