CN207114869U - A kind of light microscope - Google Patents

Abstract

The utility model discloses an optical microscope, which comprises an eyepiece, an objective lens, a lens tube, a sleeve, a mirror column, a mirror seat, a rough adjustment system, a fine adjustment system and an illumination system. The material of each part is mostly high-density polyethylene plastic unless otherwise specified. The eyepiece is inserted in the upper part of the lens barrel, and the objective lens is connected with the lens barrel through the bayonet at the lower part of the lens barrel. The eyepiece and the objective lens can be replaced to ensure the magnification range of the microscope; the lens barrel is set in the sleeve, and the sleeve is set on the mirror column; There is a coarse adjustment system between the lens barrel and the sleeve; there is a fine adjustment system between the sleeve and the mirror column; the focus can be adjusted by adjusting the coarse adjustment system and the fine adjustment system; the mirror column and the mirror base are fixedly connected; the lighting system is embedded in the In the mirror holder, provide light for the microscope. The utility model is small in size, easy to carry, simple in manufacture and low in cost, but has remarkable practical effect, greatly reduces the cost and price of the optical microscope, and can be widely used in scientific research and teaching.

Description

an optical microscope

technical field

The utility model relates to an optical microscope, in particular to a simple and cheap optical microscope.

Background technique

With the development of science and technology, human beings continue to explore the microscopic world, and the degree to which things can be distinguished by the naked eye is very limited. There is an urgent need for a tool to replace the naked eye to discover microscopic things. The invention of the microscope caters to this demand. The general optical microscope structure is usually: eyepiece, objective lens, lens barrel, converter, coarse quasi-focus helix, fine quasi-focus helix, mirror arm, mirror column, mirror base, stage, pressure clip, light hole, light shield , reflector, condenser, and aperture, and its structure is very complicated. Its material is usually metal, which has high production cost and high price; due to the high density of metal, the weight of general optical microscopes is relatively large; the structure and shape of mirror arms, mirror columns, mirror bases, and stages are complex, resulting in the volume of general optical microscopes. Large, not conducive to portability; its lighting system consists of light holes, shutters, reflectors, condensers, and apertures. The light comes from the outside, and there is no spontaneous light-emitting system.

If the basic principles and core components are retained, by retaining the optical system; streamlining its mechanical structure; changing its material; deleting the original lighting system and replacing it with a lighting system. Its structure can be simplified, its production cost and price can be reduced, its volume can be greatly reduced, and the influence of external light when the optical microscope is used can be broken.

Contents of the invention

The purpose of the utility model is to provide an optical microscope, which is simple and cheap, has a simple overall structure, roughly cylindrical shape, small volume, simple material and low cost.

In order to achieve the above object, the utility model takes the following technical solutions:

A kind of optical microscope, comprises eyepiece (1), objective lens (2), lens barrel (3), the parameter of described eyepiece (1), objective lens (2), lens barrel (3) adopts national uniform standard, and described eyepiece ( 1) It is detachably inserted on the lens barrel (3), and the eyepiece (1) and the objective lens (2) can be replaced; it is characterized in that it also includes: a sleeve (4), a mirror column (5), and a mirror holder (6), coarse adjustment system (7), fine adjustment system (8), lighting system (9), described eyepiece (1), objective lens (2), lens barrel (3), sleeve (4), mirror column ( 5) and the lens holder (6) are made of high-density polyethylene plastic; the objective lens (2) is installed under the lens barrel (3) and is detachably connected with the lens barrel (3) through a bayonet type; The lens barrel (3) is sleeved in the sleeve (4) in parallel, and can only translate up and down along the sleeve (4) through the action of the guide rail A (31) and the guide rail groove A (41), and the sleeve ( 4) A coarse adjustment system (7) is installed between the lens barrel (3); one side of the sleeve (4) is parallel to the mirror column (5), and passes through the guide rail B (42) and the guide rail groove B The effect of (51) can only translate up and down along described mirror column (5), and described mirror column (5) is provided with reserved groove (52) and reserved hole (53), and described reserved groove (52) It communicates with the reserved hole (53) and is equipped with a fine-tuning system (8); the mirror column (5) is fixedly connected to one side of the mirror base (6); the lighting system (9) is embedded in the mirror base (6) ; The coarse adjustment system (7) includes a coarse adjustment rack (71), a coarse adjustment gear (72), a coarse adjustment shaft (73), and a coarse adjustment knob (74), and the coarse adjustment rack (71) is fixed on The upper end of the lens barrel (3), the coarse adjustment gear (72) is fixedly connected with the coarse adjustment shaft (73) and the coarse adjustment knob (74), and the coarse adjustment shaft (73) is inserted horizontally on the sleeve (4) and Rotational movement is possible, and the coarse adjustment gear (72) is in contact with the coarse adjustment rack (71); the fine adjustment system (8) includes a fine adjustment rack (81), a fine adjustment gear (82), a worm (84), The fine-tuning shaft (83) and the fine-tuning knob (85), the fine-tuning rack (81) is fixed on the lower end of the sleeve (4), the fine-tuning shaft (83) is fixed laterally in the reserved groove (52), the fine-tuning The gear (82) is sleeved on the fine-tuning shaft (83) and can rotate around the fine-tuning shaft (83). The worm (84) is fixedly connected with the fine-tuning knob (85) and installed in the reserved hole (53). The hole (53) is rotated, and the fine-tuning gear (82) is in contact with the worm (84) and the fine-tuning rack (81); the mirror holder (6) is hollow and has a groove (61) in the middle, and the The mirror base (6) includes a pressing clip (62), and one end of the pressing clip (62) is fixed on one side of the mirror base (6); the lighting system (9) includes an LED bulb (91), a battery box ( 93), switch (92), wire, described LED light bulb (91), battery box (93), switch (92) are connected in series by wire, and described LED bulb (91) is fixed on mirror base (6) groove (61 ), the battery box (93) is fixed on the mirror base (6) Bottom, the switch (92) is fixed on one side of the mirror holder (6), and the wire is placed inside the mirror holder (6).

The upper end of the objective lens (2) has a bayonet (21), the inner lower end of the lens barrel (3) has a bayonet (32), and the objective lens (2) is connected to the lens barrel (3) through the bayonet (21); The eyepiece (1) and the objective lens (2) are replaceable, and there are three eyepieces (1), and the magnifications are respectively 4 times, 8 times, and 25 times; the objective lenses (2) are three, and the magnifications are respectively 10 times, 30 times, 60 times.

The lens barrel (3) and the sleeve (4) cooperate with the guide rail groove A (41) through the guide rail A (31), and the guide rail A (31) is fixed on both sides of the lens barrel (3), and the sleeve ( 4) There is a guide rail groove A (41) inside, the lens barrel (3) and the sleeve (4) cooperate through the guide rail A (31) and the guide rail groove A (41); the lower part of the sleeve (4) is closed Ring, one side of the upper part is an unclosed ring, one side is an open square, the guide rail B (42) is fixed on both sides of the upper square of the sleeve (4), and the upper part of the mirror column (5) There are guide rail grooves B (51) on both sides, and the sleeve (4) and the mirror column (5) cooperate with the guide rail groove B (51) through the guide rail B (42).

There is a hole in the square upper part of the sleeve (4) for installing the coarse adjustment shaft (73), the diameter of the hole is consistent with the diameter of the coarse adjustment shaft (73); there is a reserved hole in the mirror column (5) ( 53), used to install the worm (84), the diameter of the reserved slot (52) is consistent with the worm (84); the worm (84) is a cylinder with thinner ends and a thicker middle, and the worm teeth are in the worm ( 84) Central.

One end of the coarse adjustment knob (74) close to the sleeve (4) is thinner, and the other end is thicker. The diameter of the thinner part is slightly larger than that of the coarse adjustment shaft (73), and it is placed on both sides of the sleeve (4) to prevent coarse adjustment. The shaft adjustment (73) moves; the fine-tuning knob (85) is thinner near the end of the mirror column (5), and the other end is thicker. ) side to prevent the worm (84) from moving.

The inside of the battery box (93) has a metal sheet connected to the positive and negative poles of the battery; the battery box (93) has a cover, and the cover of the battery box (93) is located on the bottom surface of the mirror holder (6) and can be opened.

When in use, put the film on the lens holder and clamp it with the film clip, select the appropriate eyepiece and objective lens, adjust the coarse adjustment knob and fine adjustment knob until a clear image can be seen through the eyepiece. If the light is dim, you can turn on the switch to let the LED bulb provide auxiliary light.

The utility model has beneficial effects. On the basis of the original optical microscope, the utility model changes the material of most of the metal components of the original optical microscope into high-density polyethylene plastic, and the price of high-density polyethylene plastic is lower than that of common metals, reducing the cost of the optical microscope ; The melting point of high-density polyethylene plastic is low, and its processing difficulty is far lower than that of metal, which greatly reduces the processing cost of optical microscopes; the density of high-density polyethylene plastic is lower than that of metal, making the optical microscope under the same volume The weight is reduced; the large-volume construction of the converter, mirror arm, and stage of the general optical microscope is deleted, which greatly reduces its volume; the construction of the light hole, shutter, mirror, condenser, and aperture lighting system is deleted and replaced by Using LED bulbs to emit light, on the one hand, reduces the volume of the optical microscope, and also breaks the limitation of external light on the use of the microscope. To sum up, the utility model has a simpler structure and lower cost than ordinary optical microscopes, greatly reduces the volume and weight of the microscope, is easy to carry, and can be widely used in many aspects such as life and teaching.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the rear view of the utility model.

Fig. 3 is the sectional view of A-A plane of the utility model

Figure 4 is a schematic diagram of the objective lens structure

Figure 5 is a schematic diagram of the lens barrel structure and a partial half-section view

Figure 6 is a schematic diagram of the sleeve structure

Figure 7 is a schematic diagram of the structure of the mirror column and the mirror base and a partial enlarged view, the enlarged part is the reserved groove and the reserved hole in the mirror column.

Figure 8 is a schematic diagram of the structure of the coarse adjustment system

Figure 9 is a schematic diagram of the fine-tuning system structure

Figure 10 is a schematic diagram of the lighting system circuit

In the figure: 1—eyepiece 2—objective lens 21—bayonet 3—lens barrel 31—guide rail A32—card slot 4—sleeve 41—guide rail groove A 42—guide rail B5—mirror column 51—guide rail groove B52—reserved groove 53 —Reserved hole 6—Mirror base 61—Groove 62—Pression clamp 7—Coarse adjustment system 71—Coarse adjustment rack 72—Coarse adjustment gear 73—Coarse adjustment shaft 74—Coarse adjustment knob 8—Fine adjustment system 81—Fine adjustment Rack 82—fine-tuning gear 83—fine-tuning shaft 84—worm 85—fine-tuning knob 9—lighting system 91—LED bulb 92—switch 93—battery box

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further explained.

As shown in Figure 1, Figure 2 and Figure 3, the utility model includes an eyepiece 1, an objective lens 2, a lens barrel 3, a sleeve 4, a mirror column 5, a mirror base 6, a rough adjustment system 7, a fine adjustment system 8 and an illumination system 9 , the material of each component is high-density polyethylene plastic unless otherwise specified.

Lens barrel 3 adopts the general national standard, and its length is 160mm, and inner diameter is 25mm, and the draw-in groove 32 that cooperates with objective lens 2 is arranged at its lower end.

The eyepiece 1 is on the upper end of the lens barrel 3, and can be directly inserted into and pulled out of the lens barrel 3. The parameters of the eyepiece 1 adopt the national general model, and the diameter of the end that cooperates with the lens barrel 3 is 25mm; the eyepiece 1 has three different magnifications, respectively 4 times , 8 times, and 25 times. In order to ensure the accuracy of the utility model and the comfort of the eyes during use, the lens of the eyepiece 1 is made of glass. The magnification of the eyepiece of the utility model is not limited to these three. Look for eyepieces of the same model with different magnifications to replace.

The objective lens 2 is at the lower end of the lens barrel 3, and adopts a national general model, and the diameter of its mating end with the lens barrel 3 is 25mm; in order to facilitate replacement, the connection mode between the objective lens 2 and the lens barrel 3 is a bayonet connection, as shown in Figure 4, the objective lens 2 There is a bayonet socket 21 on both sides of the upper part, as shown in the partial cross-section of Figure 5, the lower part of the lens barrel 3 has a bayonet slot 32 corresponding to the bayonet socket 21 of the objective lens 2; when connecting, align the bayonet socket 21 of the objective lens 2 with the bayonet groove 32 straight groove and push the objective lens 2 into the lens barrel 3. After pushing all the matching ends of the objective lens 2 into the lens barrel 3, the bayonet 21 of the objective lens 2 is just aligned with the annular groove. When the object lens 2 is separated from the straight groove, the objective lens 2 is blocked, and the objective lens 2 is installed; when it is removed, it is only necessary to rotate the objective lens 2 so that the bayonet 21 is aligned with the straight groove, and the objective lens 2 can be pulled out of the lens barrel 3; the objective lens 2 of the utility model The lens is made of glass, and the objective lens 2 can be replaced. The objective lens 2 has three magnifications, which are respectively 10 times, 30 times and 60 times.

The lens barrel 3 is parallelly set in the sleeve 4, and the outer diameter of the lens barrel 3 is slightly smaller than the inner diameter of the sleeve 4 to reduce friction; as shown in Figure 5, there are raised guide rails A31 at both ends of the lens barrel 3, as shown in Figure 6 It is shown that there is a guide rail groove A41 matching with the guide rail A31 inside the sleeve 4, so as to ensure that the lens barrel 3 can only slide up and down in the sleeve 4 parallel to the sleeve 4; There is a coarse adjustment system 7 connected with the lens barrel 3 and the sleeve 4 between the lens barrel and the sleeve. The structure of the coarse adjustment system 7 is shown in Figure 8; as shown in Figure 5, the coarse adjustment rack 71 is bonded and fixed on the mirror On the upper part of one side of the cylinder 3, the coarse adjustment gear 72 cooperates with the coarse adjustment rack 71 and is fixedly connected with the coarse adjustment shaft 73. The coarse adjustment shaft 73 is inserted horizontally in the through hole on the sleeve 4, and can be used for rotational movement and coarse adjustment. The knob 74 is fixedly connected with the coarse adjustment shaft 73, and the end of the coarse adjustment knob 74 in contact with the sleeve 4 is slightly larger than the diameter of the coarse adjustment shaft 73. After being connected with the coarse adjustment shaft 73, it is against the two ends of the sleeve 4 to prevent coarse adjustment. The shaft 73 and the coarse adjustment gear 72 slide left and right, and the end in contact with the user's hand is larger, which is convenient for the user to rotate; the coarse adjustment gear 72 is driven to rotate by turning the coarse adjustment knob 74, thereby driving the coarse adjustment rack 71 and the lens barrel 3 to rotate. Larger lifting movement; the pitch of the coarse adjustment gear 72 and the coarse adjustment rack 71 is 1 mm, the coarse adjustment gear 72 has 32 teeth, the coarse adjustment knob 74 rotates one week, and the lens barrel 3 rises or falls by 32 mm; Coarse adjustment gear 72, coarse adjustment rack 71 tooth pitch and coarse adjustment gear 72 tooth numbers are modified appropriately, change the height that coarse adjustment knob 74 rotates one week lens barrel 3 lifts.

As shown in Figure 6, there are two opposite guide rails B42 on the square ends of the upper part of the sleeve 4. The size of the mirror column 5 is the same as that of the upper part of the sleeve 4. guide rail groove B51, so that the sleeve 4 is parallel to the mirror column 5, and can only move up and down along the guide rail groove B51 on the mirror column 5; in order to improve the accuracy of adjustment, as shown in the partial enlarged view of Figure 7, the mirror column 5 There are reserved grooves 52 and reserved holes 53 inside, and the fine adjustment system 8 connected with the sleeve 4 and the mirror column 5 is arranged in the reserved groove 52 and the reserved hole 53. The structure of the coarse adjustment system 8 is shown in Figure 9; As shown in Figure 6, the lower part of the sleeve 4 is ring-shaped, and the fine-tuning rack 81 is bonded and fixed on the side of the lower part of the sleeve 4 facing the mirror column 5. The fine-tuning gear 82 cooperates with the fine-tuning rack 81, and the fine-tuning gear 82 is sleeved on the fine-tuning rack. On the shaft 83 and can rotate around the fine-tuning shaft 83, the fine-tuning shaft 83 is horizontally fixed in the reserved groove 52 of the mirror column 5, and the diameter of the middle part where the fine-tuning shaft 83 cooperates with the fine-tuning gear 82 is slightly smaller than that at both ends, so that the fine-tuning gear 82 will not be in the Slide left and right on the micro bar shaft, the worm 84 cooperates with the fine-tuning gear and is installed in the reserved hole 53 of the mirror column 5, the two ends of the worm 84 are fully matched with the two ends of the reserved hole 53, so that the worm 84 cannot be in the reserved hole 53 Moving up and down, the major diameter of the worm 84 worm teeth is slightly smaller than the reserved hole 53 to prevent the worm teeth from being worn out, the fine-tuning knob 85 is fixedly connected with the worm 84, and the end of the fine-tuning knob 85 in contact with the sleeve 4 is slightly larger than the diameter of the worm 84 , after being connected with the worm screw 84, lean on the mirror column 5 to prevent the worm screw 84 from sliding back and forth, and the end in contact with the user's hand is larger, which is convenient for the user to rotate; Fine-tuning gear 82 rotates a tooth, drives worm screw 84, fine-tuning gear 82 to rotate by turning fine-tuning knob 85, thereby drives fine-tuning rack 81, mirror post 5 to do slight lifting motion; Described fine-tuning gear 82, fine-tuning rack 81, worm 84 tooth pitches are all 0.5mm, and the fine-tuning knob 85 rotates once, and the lens barrel 3 rises or falls by 0.5mm; the tooth pitch of the fine-tuning gear 82, the fine-tuning rack 81, and the worm 84 can also be appropriately modified, and the fine-tuning knob 85 can be changed to rotate one circle to mirror The height of cylinder 3 lifting.

As shown in Figure 7, the mirror base 6 is hollow and has a groove 61 in the middle, and the mirror base is vertically fixedly connected with the mirror column 5; A high-density polyethylene plastic sheet has certain elasticity, and one end thereof is fixed on the mirror holder 6; On the seat 6, put down the unfixed end of the tablet clamp 62, and the tablet clamp 62 will compress the tablet downwards due to elastic recovery.

In order to solve the light brightness problem, a lighting system 9 is added in the mirror base 6. The lighting system 9 is made up of an LED bulb 91, a battery box 93, a switch 92 and a wire. The circuit schematic diagram of the lighting system is as shown in Figure 10; the groove 61 An LED light bulb 91 is fixed inside, and there is a battery box 93 at the bottom of the mirror base 6. Inside the battery box, there is a metal sheet connected to the positive and negative poles of the battery. Three AA button batteries can be placed and connected to provide power for the LED light bulb 91. The battery box 93 There is a cover, which can be opened from the bottom of the mirror base 6 to replace the battery. One side of the mirror base is provided with a switch 92, the switch 92, the LED bulb 91, and the battery box 93 are connected by wires, and the switch 92 can control the circuit of the LED bulb 91 to be disconnected and closed; If the light is dark during use, the switch 92 can be turned on to provide sufficient light through the LED bulb 91 .

The lens of the utility model adopts glass material, the gear, rack, worm, and shaft adopt metal material, and all the others can be replaced by high-density polyethylene plastics.

The product form of the present utility model is not limited to the illustrations and examples of this case, and anyone who makes appropriate changes or modifications of similar ideas to it should be considered as not departing from the patent category of the present utility model.

Claims (6)

1. a kind of light microscope, including eyepiece (1), object lens (2), lens barrel (3), the eyepiece (1), object lens (2), lens barrel (3) Parameter use unification of the motherland standard, the eyepiece (1) is removably inserted on lens barrel (3), the eyepiece (1), object lens (2) It is replaceable；

Characterized by further comprising：Sleeve (4), mirror post (5), microscope base (6), coarse tuning system (7), micro-tensioning system (8), illuminator (9), the material of the eyepiece (1), object lens (2), lens barrel (3), sleeve (4), mirror post (5) and microscope base (6) is high-density polyethylene Alkene plastics；The object lens (2) are detachably connected under lens barrel (3) and with lens barrel (3) by bayonet type；The lens barrel (3) Parallel is enclosed in sleeve (4), and can only be put down up and down along the sleeve (4) by guide rail A (31) and guide groove A (41) effect Move, coarse tuning system (7) is housed between the sleeve (4) and lens barrel (3)；Sleeve (4) side it is parallel be enclosed on mirror post (5) On, and can only be interior along mirror post (5) upper and lower translation, the mirror post (5) by guide rail B (42) and guide groove B (51) effect Provided with preformed groove (52) and hole to be provided (53), the preformed groove (52) connects with hole to be provided (53), built with micro-tensioning system (8)； The mirror post (5) is fixedly connected with microscope base (6) side；The illuminator (9) is in microscope base (6)；The coarse tuning system (7) Including coarse adjustment rack (71), coarse adjustment gear (72), coarse adjustment axle (73), coarse adjustment knob (74), the coarse adjustment rack (71) is fixed on Lens barrel (3) upper end, the coarse adjustment gear (72) are fixedly connected with coarse adjustment axle (73), coarse adjustment knob (74), the coarse adjustment axle (73) Horizontal to be inserted on sleeve (4) and rotate, the coarse adjustment gear (72) coordinates with coarse adjustment rack (71) to be contacted；The fine setting System (8) includes fine setting rack (81), fine setting gear (82), worm screw (84), fine adjustment shaft (83) and vernier knob (85), described micro- Rack (81) is adjusted to be fixed on sleeve (4) lower end, the fine adjustment shaft (83) is secured transverse in preformed groove (52), the fine setting gear (82) it is enclosed on fine adjustment shaft (83) and can be rotated around fine adjustment shaft (83), the worm screw (84) is fixedly connected simultaneously with vernier knob (85) It is installed in hole to be provided (53), can be rotated around hole to be provided (53), the fine setting gear (82) and worm screw (84), fine setting rack (81) Coordinate contact；The microscope base (6) is that hollow and middle part has a groove (61), and the microscope base (6) includes piece pressing clip (62), institute State piece pressing clip (62) one end and be fixed on microscope base (6) side；The illuminator (9) include LED bulb (91), battery case (93), (92), wire are switched, the LED bulb (91), battery case (93), switch (92) pass through wired in series, the LED bulb (91) It is fixed in microscope base (6) groove (61), the battery case (93) is fixed on microscope base (6) bottom, and the switch (92) is fixed on mirror Seat (6) side, it is internal that the wire is placed in microscope base (6).

A kind of 2. light microscope according to claim 1, it is characterised in that：There is bayonet socket (21) object lens (2) upper end, Lens barrel (3) interior lower end has neck (32), and the object lens (2) are connected with lens barrel (3) by bayonet socket (21)；The eyepiece (1), alternatively, eyepiece (1) is three to object lens (2), and enlargement ratio is respectively 4 times, 8 times, 25 times；Object lens (2) are three, amplification Multiplying power is respectively 10 times, 30 times, 60 times.

A kind of 3. light microscope according to claim 1, it is characterised in that：The lens barrel (3) and sleeve (4) are by leading Rail A (31) and guide groove A (41) coordinates, and the guide rail A (31) is fixed on lens barrel (3) both sides, has guide groove in the sleeve (4) A (41), the lens barrel (3) and sleeve (4) are coordinated by guide rail A (31) and guide groove A (41)；Sleeve (4) bottom is to close The annular of conjunction, top side are inc annular, and side is inc square, and the guide rail B (42) is fixed on set There is guide groove B (51) the square both sides in cylinder (4) top, mirror post (5) the top both sides, and the sleeve (4) and mirror post (5) pass through Guide rail B (42) and guide groove B (51) coordinates.

A kind of 4. light microscope according to claim 1, it is characterised in that：There is hole at the square place in sleeve (4) top, For installing coarse adjustment axle (73), the diameter in hole is consistent with the diameter of coarse adjustment axle (73)；There is hole to be provided (53) in the mirror post (5), For installing worm screw (84), the diameter of preformed groove (52) is consistent with worm screw (84)；The worm screw (84) be both ends it is thinner, middle part compared with Thick cylinder, wrom tooth is in the middle part of worm screw (84).

A kind of 5. light microscope according to claim 1, it is characterised in that：The coarse adjustment knob (74) is close to sleeve (4) one end is thinner, and the other end is thicker, more bigger than coarse adjustment axle (73) diameter compared with thin place's diameter, is against sleeve (4) both sides, prevents thick Adjust axle (73) mobile；The vernier knob (85) is thinner close to mirror post (5) one end, and the other end is thicker, and relatively carefully place's diameter compares worm screw (84) both ends diameter is bigger, is against mirror post (5) side, prevents that worm screw (84) is mobile.

A kind of 6. light microscope according to claim 1, it is characterised in that：There is connection electricity inside the battery case (93) The sheet metal of pond both positive and negative polarity；The battery case (93) has lid, and the lid of the battery case (93) is located on microscope base (6) bottom surface, can beaten Open.