CN210241242U - Crack light path adjusting structure - Google Patents
Crack light path adjusting structure Download PDFInfo
- Publication number
- CN210241242U CN210241242U CN201921571756.6U CN201921571756U CN210241242U CN 210241242 U CN210241242 U CN 210241242U CN 201921571756 U CN201921571756 U CN 201921571756U CN 210241242 U CN210241242 U CN 210241242U
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- Prior art keywords
- light path
- slit
- adjusting structure
- path adjusting
- lens barrel
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- 238000005452 bending Methods 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000005286 illumination Methods 0.000 abstract description 14
- 238000003384 imaging method Methods 0.000 abstract description 11
- 239000012634 fragment Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 239000004576 sand Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a slit lamp light path adjusting structure, which comprises a lamp holder, wherein a condenser lens barrel is arranged in the lamp holder, a diaphragm disc is arranged in the condenser lens cone, a crack rotating shaft is arranged at the lower part of the condenser lens cone, a projection lens cone is arranged at the lower part of the crack rotating shaft, a mounting seat is arranged below the projection lens cone, a reflector opposite to the projection lens cone is arranged on the mounting seat, convex strips are symmetrically arranged on two sides of the back surface of the reflector, mounting grooves matched with the convex strips are arranged on the mounting seat, the installation groove is internally provided with a spring plate snap spring which comprises a connecting part and a bending part, the connecting part is fixedly connected with the lower surface of the installation groove, the bending part and the lower surface of the mounting groove have a certain clearance, the upper surface of the bending part is connected with the lower side surface of the convex strip, the convex strips move up and down in the mounting grooves along with the elastic piece clamp springs, and the inclination angles of the reflectors are adjusted through the elastic piece clamp springs. After the local change of the illumination light path, the imaging quality of the illumination light spot is greatly improved.
Description
Technical Field
The utility model relates to a technical field of slit lamp, concretely relates to slit lamp light path adjusts structure.
Background
The slit lamp is an important medical instrument for detecting eye structures of human eyes, illuminates the eyes through a slit formed by lamplight, and the slit irradiates the eyes to form an optical section so as to observe the health conditions of all parts of the eyes.
The slit lamp is a medical microscope and consists of a mobile platform, an optical part, an illumination light path part and the like. The illumination light path part is also an important structure for generating light spots, and the generated crack effect is good only if the illumination part is reasonable in structure. The traditional slit lamp adopts the old structural design for the structure of the illumination light path part, and light spots projected from the projection lens barrel are irradiated to eyes of a human body through the reflector; in order to meet the crack effect, the components of the illumination light path part need to be accurately processed, otherwise, the crack effect is not good due to processing errors, and observation is not facilitated; in addition, the diameter of the diaphragm hole of the diaphragm disc is large, so that the waste of the diaphragm area is large, and the redundant diaphragm area does not play any role in imaging.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art exists, the utility model aims to provide a light spot image that throws out light path can carry out the slit lamp light path adjusting structure who adjusts.
The technical scheme adopted by the invention is as follows:
the slit lamp light path adjusting structure comprises a lamp holder, a light-gathering lens barrel is arranged in the lamp holder, a diaphragm disc is arranged in the light-gathering lens barrel, the lower part of the condensing lens barrel is provided with a crack rotating shaft, the lower part of the crack rotating shaft is provided with a projecting lens barrel, a mounting seat is arranged below the projection lens cone, a reflector opposite to the projection lens cone is arranged on the mounting seat, convex strips are symmetrically arranged on two sides of the back surface of the reflector, mounting grooves matched with the convex strips are arranged on the mounting seat, the installation groove is internally provided with a spring plate snap spring which comprises a connecting part and a bending part, the connecting part is fixedly connected with the lower surface of the installation groove, the bending part and the lower surface of the mounting groove have a certain clearance, the upper surface of the bending part is connected with the lower side surface of the convex strip, the convex strips move up and down in the mounting grooves along with the elastic piece clamp springs, and the inclination angles of the reflectors are adjusted through the elastic piece clamp springs.
The principle and the beneficial effect of the scheme are that:
according to actual debugging needs, exert the effort to the reflector upper end, its effort can be used in on the shell fragment jump ring for the portion of bending of shell fragment jump ring warp, and hug closely with the mounting groove, and then sand grip downside card is in the mounting groove, make reflector inclination change, with the facula that the change projection lens cone throws out, thereby satisfy the optical performance requirement, design like this, change the back to illumination light path part, illumination facula imaging quality has great promotion, reduce cost.
Furthermore, the lamp holder, the condenser lens barrel, the slit rotating shaft and the center of the projection lens barrel are all positioned on the same straight line. Can ensure that the light is straight.
Further, the bending part comprises an inclined section and a horizontal section, and the horizontal section is connected with the connecting part horizontally arranged through the inclined section.
Further, the distance of the gap is 0.2-0.4 cm. Due to the design, the distance of the gap is matched with the depth of the mounting groove, and if the distance of the gap is smaller than 0.2cm, when the lower side surface of the raised line overcomes the elasticity of the elastic sheet clamp spring and is tightly attached to the mounting groove, the side surface of the reflector can protrude out of the mounting groove, so that the mounting groove can not clamp the reflector tightly, the reflector can rebound to an initial state at any time, and the use of the slit lamp can be influenced; the distance in the clearance is assumed to be greater than 0.4cm, so that the lower side surface of the convex strip can not be tightly attached to the mounting groove after the elasticity of the elastic sheet clamp spring is overcome, and the reflector can not be stably clamped.
Further, be equipped with first screw hole on the mount pad, install first screw in the first screw hole, and the connecting portion of shell fragment jump ring is fixed through first screw installation with the mount pad.
Further, a second screw hole is formed in the reflector, a second screw is installed in the second screw hole, and the bending portion of the elastic piece clamp spring and the reflector are fixedly installed through the second screw.
Further, a diaphragm hole is arranged on the diaphragm disc, and the diameter of the diaphragm hole is 0.4-0.6 cm.
Compared with the prior art, the utility model has the advantages of as follows:
the optical path part is formed by combining a plurality of groups of lenses, so that the imaging characteristic of the microscope is met, the positions of the lenses are fixed according to the imaging characteristic of the microscope, namely the optical path is not changed, the larger the diameter of the diaphragm hole is, the poorer the image quality is, and the distortion is easily generated at the two ends under the condition of crack observation. Therefore, on the premise of meeting the requirement of spot imaging, the inventor finds that the spot imaging is better improved by changing the diameter of the diaphragm.
Meanwhile, the defects of large light path area waste, non-adjustable reflectors and the like of the original illumination light path are overcome, the effect of the original light path is not influenced, the cost is low, the adjustment is easy, and the light spot effect in the illumination light path is obviously improved.
Drawings
Fig. 1 is the structure schematic diagram of the slit lamp light path adjusting structure of the present invention.
Fig. 2 is a partial enlarged view of a1 in fig. 1.
Fig. 3 is the structure schematic diagram of the spring plate and the spring ring of the present invention.
In the figure: the device comprises a lamp holder 1, a diaphragm disc 2, a projection lens barrel 3, a crack rotating shaft 4, a mounting seat 5, a reflective mirror 6, a first elastic sheet clamp spring 7, a connecting part 71, a bending part 72, a first mounting groove 8, a second elastic sheet clamp spring 9 and a second mounting groove 10.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
In this embodiment: referring to fig. 1 and 2, the slit lamp light path adjusting structure comprises a lamp holder 1, wherein a condenser lens barrel is installed in the lamp holder 1, a diaphragm disc 2 is installed in the condenser lens barrel, a diaphragm hole is formed in the diaphragm disc 2, the diameter of the diaphragm hole is 0.4-0.6cm, a slit rotating shaft 4 is installed at the lower portion of the condenser lens barrel, a projection lens barrel 3 is installed at the lower portion of the slit rotating shaft 4, a mounting seat 5 is arranged below the projection lens barrel 3, and a reflector 6 opposite to the projection lens barrel 3 is installed on the mounting seat 5.
6 back bilateral symmetry of reflector is equipped with the sand grip, is equipped with on mount pad 5 with sand grip matched with mounting groove, installs shell fragment jump ring 7 in mounting groove 8, see fig. 3, and shell fragment jump ring 7 includes connecting portion 71 and the portion 72 of bending, and connecting portion 71 and 8 lower fixed surface in mounting groove are connected.
A gap is formed between the bending part 72 and the lower surface of the mounting groove, the distance of the gap is 0.2-0.4cm, the upper surface of the bending part is connected with the lower side surface of the convex strip, the bending part 72 comprises an inclined section and a horizontal section, the horizontal section is connected with the horizontally arranged connecting part 71 through the inclined section, the bending part and the connecting part form a Z shape, the convex strip moves up and down in the mounting groove 8 along with the elastic piece clamp spring 7, the inclination angle of the reflective mirror 6 is adjusted through the elastic piece clamp spring 7, the design is carried out, the distance of the gap is matched with the depth of the mounting groove, the distance of the gap is less than 0.2cm, when the elasticity of the elastic piece clamp spring 7 is overcome and the elastic piece clamp spring 8 is tightly attached to the mounting groove, the side surface of the reflective mirror 6 protrudes out of the mounting groove; the distance in clearance is assumed to be greater than 0.4cm, so will make the sand grip downside overcome shell fragment jump ring 7 elasticity back, reflector 6 can't paste tightly with mounting groove 8, lead to, can't stabilize and carry out the chucking with reflector 6.
Be equipped with first screw hole on the mount pad 5, install first screw in the first screw hole, and the connecting portion 71 and the mount pad 5 of shell fragment jump ring 7 are fixed through first screw installation, are equipped with the second screw hole on the reflector 6, install the second screw in the second screw hole, and the portion of bending of shell fragment jump ring 7 passes through the second screw installation with reflector 6 and fixes.
Through lamp stand 1, the condenser lens cone, crack rotation axis 4 and the center of projecting lens cone 3 all are in same straight line, according to actual debugging needs, apply the effort to 6 upper ends of reflector, its effort can be used in shell fragment jump ring 7, make the portion of bending of shell fragment jump ring 7 warp, and hug closely with the mounting groove, and then 6 both downside cards of reflector are in mounting groove 8, make 6 inclination of reflector change, in order to change the facula that the lens cone 3 of projecting throws out, thereby satisfy the optical performance requirement, the design like this, change the back to light path part, illumination facula formation of image quality has great promotion, and cost is reduced.
The optical path part is formed by combining a plurality of groups of lenses, so that the imaging characteristic of the microscope is met, the positions of the lenses are fixed according to the imaging characteristic of the microscope, namely the optical path is not changed, the larger the diameter of the diaphragm hole is, the poorer the image quality is, and the distortion is easily generated at the two ends under the condition of crack observation. Therefore, on the premise of meeting the requirement of spot imaging, the inventor finds that the spot imaging is better improved by changing the diameter of the diaphragm.
Meanwhile, the defects of large diaphragm area waste, nonadjustable reflector 6 and the like of the original illumination light path are overcome, the effect of the original light path is not influenced, the cost is low, the adjustment is easy, and the light spot effect in the illumination light path is obviously improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.
Claims (7)
1. The slit lamp light path adjusting structure comprises a lamp holder, a light-gathering lens barrel is arranged in the lamp holder, a diaphragm disc is arranged in the light-gathering lens barrel, the lower part of the condensing lens barrel is provided with a crack rotating shaft, the lower part of the crack rotating shaft is provided with a projecting lens barrel, a mounting seat is arranged below the projection lens cone, a reflector opposite to the projection lens cone is arranged on the mounting seat, it is characterized in that convex strips are symmetrically arranged on both sides of the back surface of the reflector, mounting grooves matched with the convex strips are arranged on the mounting seat, the installation groove is internally provided with a spring plate snap spring which comprises a connecting part and a bending part, the connecting part is fixedly connected with the lower surface of the installation groove, the bending part and the lower surface of the mounting groove have a certain clearance, the upper surface of the bending part is connected with the lower side surface of the convex strip, the convex strips move up and down in the mounting grooves along with the elastic piece clamp springs, and the inclination angles of the reflectors are adjusted through the elastic piece clamp springs.
2. The slit-lamp optical path adjusting structure according to claim 1, wherein centers of the lamp holder, the condenser lens barrel, the slit rotation axis, and the projection lens barrel are all on the same straight line.
3. The slit-lamp light path adjusting structure according to claim 1, wherein the bending portion comprises an inclined section and a horizontal section, and the horizontal section is connected with the horizontally arranged connecting portion through the inclined section.
4. The slit-lamp optical path adjusting structure according to claim 1, wherein the gap has a distance of 0.2-0.4 cm.
5. The slit lamp light path adjusting structure according to claim 1, wherein the mounting base is provided with a first screw hole, a first screw is installed in the first screw hole, and the connecting portion of the spring clip is fixedly installed on the mounting base through the first screw.
6. The slit lamp light path adjusting structure of claim 1, wherein the reflective mirror is provided with a second screw hole, a second screw is installed in the second screw hole, and the bending portion of the spring clip and the reflective mirror are fixedly installed through the second screw.
7. The slit-lamp light path adjusting structure according to claim 1, wherein the diaphragm disc is provided with diaphragm holes, and the diameter of the diaphragm holes is 0.4-0.6 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921571756.6U CN210241242U (en) | 2019-09-20 | 2019-09-20 | Crack light path adjusting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921571756.6U CN210241242U (en) | 2019-09-20 | 2019-09-20 | Crack light path adjusting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210241242U true CN210241242U (en) | 2020-04-03 |
Family
ID=69966375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921571756.6U Expired - Fee Related CN210241242U (en) | 2019-09-20 | 2019-09-20 | Crack light path adjusting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210241242U (en) |
-
2019
- 2019-09-20 CN CN201921571756.6U patent/CN210241242U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200403 |