CN206729872U - Confocal laser fundus imaging instrument - Google Patents

Abstract

The utility model discloses a kind of confocal laser fundus imaging instrument, including：Object lens, scanning lens, scanning galvanometer, as mirror, matting module, pin hole, imaging detection component and lasing light emitter；The light that the lasing light emitter is sent enters eyeground after the scanning galvanometer, scanning lens, object lens；From the eyeground outgoing light through the object lens, scanning lens, scanning galvanometer, as mirror, matting module, pin hole after enter the imaging detection component；The matting module is delustring polarizer.Compared to prior art, the utility model confocal laser fundus imaging instrument can reduce the interference of " ghost image " that is formed by veiling glare when carrying out catoptric imaging, improve image quality.

Description

Confocal laser fundus imaging instrument

Technical field

It the utility model is related to Angiography, more particularly to a kind of confocal laser fundus imaging instrument.

Background technology

Many ophthalmology diseases are all with the change on eyeground, such as senile macular degeneration, diabetic retinopathy, intraocular Tumour, central serous chorioretinopathy, Harada disease etc..Fluorescence fundus angiography and Indocyanine-Green It is inspection and record retina, the important diagnostic technology of choroidal artery situation.Modern fluorescence fundus angiography technology is 20 Begin to the sixties in century be applied to clinic.And Indocyanine-Green technology just starts to apply in the mid-90.Obtain Accurately, clearly diagnosis and guiding treatment of the eyeground contrastographic picture to fundus oculi disease all have great importance.

The general principle of eyeground radiography is injected intravenously as the fluorescent material of contrast agent, when fluorescent material passes through blood When cycling to reach optical fundus blood vessel, with the light irradiation eyeground for being adapted to excite the fluorescent material, fluorescent material in optical fundus blood vessel by Excite and launch a kind of fluorescence of specific wavelength, this fluorescence records are got off just to obtain the image of optical fundus blood vessel by contrast machine.By Slightly long in the wavelength of fluorescence, many pathologic structures such as microaneurysm contrast under fluorescence are very low, it is more difficult to observe.But The SPECTRAL REGION of shorter wavelength, inner retina nerve fibre bundle have extra high reflectivity（Blu-ray reflection is imaged）, pass through Contrast the eyeground of adjacent domain, it is easier to detect the local nerve fiber layer defects in eyeground.In actual clinical application, people Generally contrast imaging, catoptric imaging are incorporated into an equipment, to facilitate surgeon flexibility to use.

What it is due to imaging device generally use is aspherical mirror, and under catoptric imaging pattern, one is had on eye fundus picture " ghost image " clearly formed by veiling glare, seriously reduces image quality, and the interpretation diagnosis to doctor brings inconvenience, even Doctor can be judged by accident.

In view of the above problems, it is necessary to a kind of confocal laser fundus imaging instrument is provided, to solve the above problems.

Utility model content

In view of the shortcomings of the prior art, the technical problem that the utility model solves is to provide a kind of confocal laser fundus imaging Instrument, the confocal laser fundus imaging instrument can reduce the interference of " ghost image " that is formed by veiling glare when carrying out catoptric imaging, carry High imaging quality.

In order to solve the above technical problems, what the technical solution of the utility model was realized in：

A kind of confocal laser fundus imaging instrument, including：Object lens, scanning lens, scanning galvanometer, as mirror, matting module, pin Hole, imaging detection component and lasing light emitter；The light that the lasing light emitter is sent is laggard through the scanning galvanometer, scanning lens, object lens Enter eyeground；From the eyeground outgoing light through the object lens, scanning lens, scanning galvanometer, as mirror, matting module, pin hole it is laggard Enter the imaging detection component；The matting module is delustring polarizer.

Further, the matting module also includes base, the motor on the base, installed in the motor On spill spin block and an at least tablet filter, the optical filter, delustring polarizer be arranged on the spill spin block on, the base On be provided with light hole；During work, the spill spin block rotates under the drive of the motor so that the optical filter or delustring Polarizer overlaps with the light hole.

Further, the lasing light emitter includes being polarized module, and the module that is polarized includes rotatable rotating disk and peace Polarizer is polarized in the rotating disk；When rotating the rotating disk, the polarizer that is polarized is with the rotating disk Rotate.

Further, the scanning galvanometer, as being provided with spectral module between mirror, the spectral module includes spectroscope.

Further, the spectral module also includes chassis and the supporting table on the chassis, the support The mounting surface that platform has optical channel and is obliquely installed, the spectroscope are arranged on the mounting surface.

Further, the mounting surface and it is described go out optical channel axle center between angle between 30 ° and 60 °.

Further, the spectral module is additionally provided with adjusting screw, and the adjusting screw is arranged on the chassis Mounting hole is interior and withstands the supporting table；When needing to adjust spectroscopical position, the adjusting screw is rotated, now institute To state adjusting screw and jack up the supporting table so that the angle between the supporting table and the chassis changes, so that Angle between the spectroscope and the chassis changes.

Further, the adjusting screw is three, and the adjusting screw is evenly distributed on the chassis circumferential edges On, now three adjusting screws form an equilateral triangle.

Further, reflective mirror is additionally provided between the object lens and the scanning lens, to change the propagation road of light Footpath.

Further, the scanning lens includes scanning simple lens and scanning balsaming lens, the scanning balsaming lens Including planoconvex spotlight and plano-concave lens.

The beneficial effects of the utility model are：Compared to prior art, the utility model confocal laser fundus imaging instrument exists Can be reduced during catoptric imaging the interference of " ghost image " that is formed by veiling glare, improve image quality.

Brief description of the drawings

Fig. 1 show the structural representation of the utility model confocal laser fundus imaging instrument.

Fig. 2 show the structural representation of spectral module.

Fig. 3 is the three-dimensional exploded view of spectral module shown in Fig. 2.

Fig. 4 is the schematic perspective view of supporting table.

Fig. 5 show the three-dimensional exploded view of matting module.

Fig. 6 show the schematic perspective view of another angle of matting module.

Fig. 7 show the structural representation for being polarized module.

Fig. 8 is the three-dimensional exploded view that module is polarized shown in Fig. 7.

Embodiment

Refer to shown in Fig. 1, the utility model confocal laser fundus imaging instrument 100 includes：Object lens 10, scanning lens 20, Scanning galvanometer 30, as mirror 40, matting module 50, pin hole 60, imaging detection component 70 and lasing light emitter 80.The lasing light emitter 80 is sent out The light gone out enters eyeground after the scanning galvanometer 30, scanning lens 20, object lens 10；The light being emitted from the eyeground is through the thing Mirror 10, scanning lens 20, scanning galvanometer 30, as entering the imaging detection component 70 after mirror 40, matting module 50, pin hole 60. The light of the eyeground outgoing can be the special wavelength light that the fluorescent material stimulated light in optical fundus blood vessel is excited and sent, can also It is the light of light that lasing light emitter is sent after the fundus reflex.

Refer to shown in Fig. 1, the object lens 10 are double aspherical mirrors.The scanning lens 20 include scanning simple lens 21 with And scanning balsaming lens 22, the scanning balsaming lens 22 include the first lens 221 and Nian Jie with first lens 221 Second lens 222.The scanning simple lens 21, the first lens 221 are planoconvex spotlights, and second lens 222 are plano-concave lens. The scanning simple lens 21, scanning balsaming lens 22 so coordinate, and can effectively eliminate veiling glare.The object lens 10 and the scanning Reflective mirror 11 is additionally provided between lens 20, to change the propagation path of light.The scanning galvanometer 30 includes X-axis scanning galvanometer 31 and Y axis scanning galvanometer 32.The picture mirror 40 is between the scanning galvanometer 30 and the matting module 50.In this implementation It is described as mirror 40 is planoconvex spotlight in example, the scanning galvanometer 30 and described as being additionally provided with spectral module 90 between mirror 40.Please Refering to shown in Fig. 2, Fig. 3 and Fig. 4, the spectral module 90 includes chassis 91, the supporting table 92 on the chassis 91 And spectroscope 93.The fixing hole 911 and mounting hole 912 on the chassis 91 are provided through on the chassis 91.The branch Support platform 92 has optical channel 921 and the mounting surface being obliquely installed 922, and the spectroscope 93 is arranged on the mounting surface 922 On.The mounting surface 922 and it is described go out optical channel 921 axle center between angle between 30 ° and 60 °.The light splitting mould Block 90 is additionally provided with fixing screws 94 and adjusting screw 95.The fixing screws 94 are engaged with the fixing hole 911, by institute Supporting table 92 is stated to be movably fixed on the chassis 91.The adjusting screw 95 is arranged on the mounting hole 912 on the chassis 91 It is interior and withstand the supporting table 92.When needing to adjust the position of the spectroscope 93, the adjusting screw 95 is rotated, now institute To state adjusting screw 95 and jack up the supporting table 92 so that the angle between the supporting table 92 and the chassis 91 changes, So that the angle between the spectroscope 93 and the chassis 91 changes.Needed when the position of the spectroscope 93 meets When wanting, then stop operating the adjusting screw 95.In the present embodiment, the adjusting screw 95 is three, and the regulation spiral shell Nail 95 is evenly distributed on the circumferential edges of chassis 91, and now three adjusting screws 95 form an equilateral triangle.

Refer to shown in Fig. 5 and Fig. 6, the matting module 50 includes base 51, the electricity on the base 51 Machine 52, at least spill spin block 53 on the motor 52, a tablet filter 54 and delustring polarizer 55.The base 51 On be provided with light hole 511.The optical filter 54, delustring polarizer 55 are arranged on the spill spin block 53.During work, the rotation Switch block 53 rotates under the drive of the motor 52 so that the optical filter 54 or delustring polarizer 55 and the light hole 511 overlap.When the optical filter 54 overlaps with the light hole 511, confocal laser eyeground angiographic instrument 100 can be carried out Contrast imaging；When the delustring polarizer 55 overlaps with the light hole 511, confocal laser eyeground angiographic instrument 100 can To carry out catoptric imaging, now the brightness of sphere mapping can be greatly reduced in the delustring polarizer 55, without being greatly reduced The brightness of image is imitated, so as to preferably improve signal to noise ratio so that effective image becomes apparent from, and is advantageous to doctor and carries out interpretation Diagnosis.In the present embodiment, the delustring polarizer 55 has the characteristics of high bandwidth, low transmission, i.e.,：The delustring polarizer 55 can allow visible ray, infrared light, and transmitance is not higher than 40%.

Refer to shown in Fig. 7 and Fig. 8, the lasing light emitter 80, which has, is polarized module 81, it is described be polarized that module 81 includes can The rotating disk 811 of rotation and it is polarized polarizer 812 in the rotating disk 811.When the rotation rotating disk 811 When, the polarizer 812 that is polarized sends light as the rotating disk 811 rotates so as to effectively adjust the lasing light emitter 80 Polarization direction.In the present embodiment, it is described to be polarized the characteristics of polarizer 812 is with high bandwidth, high transmittance, i.e.,：Described Inclined polarizer 812 can allow visible ray, infrared light, and transmitance is not less than 65%.

Compared to prior art, the utility model confocal laser fundus imaging instrument 100 can have when carrying out catoptric imaging Effect reduces the interference of " ghost image " that is formed by veiling glare, improves image quality.

In particular, for the person of ordinary skill of the art, made under teaching of the present utility model For equivalence changes of the present utility model, should be included in the scope that present utility model application the scope of the claims is advocated.

Claims (10)

1. a kind of confocal laser fundus imaging instrument, including：Object lens, scanning lens, scanning galvanometer, as mirror, matting module, pin hole, Imaging detection component and lasing light emitter；The light that the lasing light emitter is sent is laggard pleasing to the eye through the scanning galvanometer, scanning lens, object lens Bottom；From the eyeground outgoing light through the object lens, scanning lens, scanning galvanometer, as mirror, matting module, pin hole after enter institute State imaging detection component；It is characterized in that：The matting module is delustring polarizer.

2. confocal laser fundus imaging instrument as claimed in claim 1, it is characterised in that：The matting module also include base, Motor on the base, the spill spin block on the motor and an at least tablet filter, the optical filter, Delustring polarizer is arranged on the spill spin block, and light hole is provided with the base；During work, the spill spin block is in the electricity Rotated under the drive of machine so that the optical filter or delustring polarizer overlap with the light hole.

3. confocal laser fundus imaging instrument as claimed in claim 1, it is characterised in that：The lasing light emitter includes being polarized module, The module that is polarized includes rotatable rotating disk and is polarized polarizer in the rotating disk；When the rotation rotation During rotating disk, the polarizer that is polarized is as the rotating disk rotates.

4. confocal laser fundus imaging instrument as claimed in claim 1, it is characterised in that：The scanning galvanometer, as being set between mirror Spectral module is equipped with, the spectral module includes spectroscope.

5. confocal laser fundus imaging instrument as claimed in claim 4, it is characterised in that：The spectral module also include chassis with And the supporting table on the chassis, the mounting surface that the supporting table has optical channel and is obliquely installed, described point Light microscopic is arranged on the mounting surface.

6. confocal laser fundus imaging instrument as claimed in claim 5, it is characterised in that：The mounting surface with it is described go out optical channel Axle center between angle between 30 ° and 60 °.

7. confocal laser fundus imaging instrument as claimed in claim 5, it is characterised in that：The spectral module is additionally provided with regulation Screw, the mounting hole that the adjusting screw is arranged on the chassis is interior and withstands the supporting table；When needing, regulation is described to divide During the position of light microscopic, rotate the adjusting screw, now the adjusting screw jacks up the supporting table so that the supporting table with Angle between the chassis changes, so that the angle between the spectroscope and the chassis changes.

8. confocal laser fundus imaging instrument as claimed in claim 7, it is characterised in that：The adjusting screw is three, and institute State adjusting screw to be evenly distributed on the chassis circumferential edges, now three adjusting screws form an equilateral triangle.

9. confocal laser fundus imaging instrument as claimed in claim 1, it is characterised in that：The object lens and the scanning lens it Between be additionally provided with reflective mirror, to change the propagation path of light.

10. confocal laser fundus imaging instrument as claimed in claim 1, it is characterised in that：It is single that the scanning lens includes scanning Lens and scanning balsaming lens, the scanning balsaming lens include planoconvex spotlight and plano-concave lens.