CN207136833U - A kind of hand-held Placido corneas shine shadow instrument - Google Patents
A kind of hand-held Placido corneas shine shadow instrument Download PDFInfo
- Publication number
- CN207136833U CN207136833U CN201720065953.5U CN201720065953U CN207136833U CN 207136833 U CN207136833 U CN 207136833U CN 201720065953 U CN201720065953 U CN 201720065953U CN 207136833 U CN207136833 U CN 207136833U
- Authority
- CN
- China
- Prior art keywords
- placido
- held
- corneas
- hand
- shadow instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
Shine shadow instrument the utility model discloses a kind of hand-held Placido corneas, hand-held Placido corneas include according to shadow instrument the disc mirror holder of upper opening inner hollow, the handle being detachably arranged on disc mirror holder, the eyeglass mounting post being arranged in the middle part of disc mirror holder, be arranged on the PCB of disc mirror holder bottom, be arranged on disc mirror holder in and the Placido disks above PCB, be arranged in handle power supply, be arranged on the outer surface of handle and be used to control the switch of power on and the mirror cover frame for Placido disks to be fixed；PCB is provided with several into the LED of honeycomb array structure distribution；Placido disks are made up of acrylic board and annular black sticker that is some equidistant and being arranged on concentric circular fashion on acrylic board；The utility model is simple in construction, astigmatism type easy to use and can be used to observe eye cornea.
Description
Technical field
It the utility model is related to cornea and shine shadow instrument, more particularly to a kind of hand-held Placido corneas shine shadow instrument.
Background technology
At present, at home the eye of regular higher educational institutions depending in light technology specialty demonstration of experiment teaching there is not yet can be very
The convenient shape shown according to map judges the apparatus for demonstrating of the type of corneal astigmatism eye；Now it is badly in need of a kind of structure letter
List, cost is low and can very easily judge that the cornea of corneal astigmatism eye type shines shadow instrument.
Utility model content
It is simple, easy to use and can be used to observe cornea that the technical problems to be solved in the utility model is to provide a kind of structure
The hand-held Placido corneas of astigmatism type shine shadow instrument.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
A kind of hand-held Placido corneas shine shadow instrument, and the hand-held Placido corneas include according to shadow instrument：
The disc mirror holder of one upper opening inner hollow；
One handle, the handle are detachably arranged on disc mirror holder, and the handle inside disc mirror holder with leading
It is logical；
One eyeglass mounting post, the eyeglass mounting post are vertically set in the middle part of disc mirror holder, and eyeglass mounting post is middle part
Cylindrical-shaped structure provided with peep hole；
One PCB, the PCB are provided with several and are arranged on disk into the LED of honeycomb array structure distribution, the PCB
Shape mirror holder bottom；
One Placido disks, the Placido disks by acrylic board and it is some equidistantly and be arranged on concentric circular fashion
Annular black sticker composition on acrylic board；The Placido disks are arranged in disc mirror holder and above PCB；
One power supply, the power supply are electrically connected by wire with PCB, and power supply is arranged in handle；
One switch, the connection switched for controlling power supply, switch are arranged on the outer surface of handle；
One mirror cover frame, the mirror cover frame are connected through a screw thread mode and covered on the outer wall of disc mirror holder, and mirror cover frame is used
Placido disks in disc mirror holder are fixed.
In one embodiment of the present utility model, the both ends of the eyeglass mounting post are respectively equipped with object lens and eyepiece, and
Object lens are located at Placido disks side.
In one embodiment of the present utility model, the hand-held Placido corneas also include an object lens according to shadow instrument
Lid, to be threadedly coupled between lens cap and eyeglass mounting post, object lens are fixed on by lens cap in the peep hole of eyeglass mounting post.
In one embodiment of the present utility model, the hand-held Placido corneas also include an eyepiece according to shadow instrument
Lid, to be threadedly coupled between eyepiece cap and eyeglass mounting post, eyepiece is fixed on by eyepiece cap in the peep hole of eyeglass mounting post.
In one embodiment of the present utility model, the hand-held Placido corneas also include a packing ring, institute according to shadow instrument
It is cirque structure to state packing ring, and PCB is fixed from the inwall insertion of disc mirror holder for packing ring.
In one embodiment of the present utility model, the hand-held Placido corneas also include a filter layer according to shadow instrument,
The filter layer is arranged between PCB and Placido disks.
In one embodiment of the present utility model, the filter layer is translucent sponge and/or the translucent scraps of paper.
In one embodiment of the present utility model, the width all same of each annular black sticker, per two neighboring
Spacing between annular black sticker is equal to the annular black sticker width of a quarter.
Pass through above-mentioned technical proposal, the beneficial effects of the utility model are：
The utility model is simple in construction, and cost is low, causes easy installation and removal using line screw connection mode；Furthermore this reality
The map that the concentric circles striped uniform light being projected on new foundation on the cornea eye of people is presented can be quick and convenient
With the presence or absence of the state for having astigmatism on regional subangle film.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the utility model top view；
Fig. 2 is the utility model section view；
Fig. 3 is the honeycomb array structure schematic diagram of LED；
Fig. 4 is the top view of Placido disks；
Corresponding component title of the numeral represented by with letter in figure：
10th, disc mirror holder 11, mounting groove 12, through hole 20, handle 30, eyeglass mounting post 40, PCB 50,
Placido disks 51, acrylic board 52, annular black sticker 53, mounting hole 60, power supply 70, switch 80, mirror cover frame
90th, object lens 91, lens cap 100, eyepiece 101, eyepiece cap 110, peep hole 120, packing ring 130, filter layer.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Shadow instrument, hand-held are shone referring to shown in Fig. 1 to Fig. 4, the utility model discloses a kind of hand-held Placido corneas
Placido corneas include disc mirror holder 10, handle 20, eyeglass mounting post 30, PCB40, Placido disk 50, power supply according to shadow instrument
60th, switch 70 and mirror cover frame 80.
Disc mirror holder 10 is the tubular construction of upper opening inner hollow, and the one side of disc mirror holder 10 is provided with interior
Wall is the mounting groove 11 of female thread structure, and the bottom of mounting groove 11 is provided with a through hole 12 with disc mirror holder internal switching.
One end of handle 20 is external thread structure, and handle 20 is detachably arranged in disc mirror by screw thread mounting means
In the mounting groove 11 of frame 10, the inside of handle 20 inside disc mirror holder 10 by through hole 12 with being turned on.
Power supply 60 is arranged in handle 20, and power supply 60 is electrically connected by wire with PCB40, and wire passes through the bottom of mounting groove 11
Through hole 12 power supply 60 is connected with PCB40；Power supply 60 uses rechargeable lithium battary, can be filled in advance when not enough power supply
Electricity.
Switch 70 is used for the connection for controlling power supply 60, and switch 70 is arranged on the outer surface of handle 20.
Eyeglass mounting post 30 is vertically set on the middle part of disc mirror holder 10, and eyeglass mounting post 30 can be with disc mirror holder 10
Be formed in one structure, and eyeglass mounting post 30 is the cylindrical-shaped structure that middle part is provided with peep hole 110.
PCB40 is provided with several into the LED of honeycomb array structure distribution, and LED is the paster LED of cool white light, high
Bright 500~600 (mcd), operating current is 20mA after conducting, and pressure drop is 3.0-3.2V, and power is 0.06W；PCB40 is arranged on circle
The bottom of dish type mirror holder 10.
Placido disks 50 by acrylic board 51 and it is some equidistantly and be arranged on concentric circular fashion on acrylic board
Annular black sticker 52 forms；The width all same of each annular black sticker 52, is pasted per two neighboring annular black
Spacing between paper 52 is equal to the annular black sticker width of a quarter, and Placido disks 50, which have, to filter and by LED
Lamp spot light changes into the effect of area source；The middle part of Placido disks 50 is provided with mounting hole 53, and during installation, mounting hole 53 passes through
Eyeglass mounting post 30, Placido disks 50 are arranged in disc mirror holder 10 and above PCB40；Placido disks 50 are logical
Following manner making is crossed, using black sticker, first black sticker is close on acrylic board, 4 are pressed using laser cutting machine
Concentric circles one by one is cut into than 1 width unequal interval, then tears off the concentric circles of the black sticker of a quarter part, you can
Obtain Placido disks.
Mirror cover frame 80 is connected through a screw thread mode and covered on the outer wall of disc mirror holder 10, and mirror cover frame 80 is used for circle
Placido disks 50 in dish type mirror holder 10 are fixed.
The utility model also includes an object lens 90 and eyepiece 100, and object lens 90 and eyepiece 100 are separately mounted to eyeglass installation
The both ends of post 30, and object lens 90 are located at the side of Placido disks 50, the design of object lens 90 and eyepiece 100 causes observer to pass through sight
Examine hole 110 and observe apparent map figure.
The utility model also includes lens cap 91 and eyepiece cap 101, is screw thread between lens cap 91 and eyeglass mounting post 30
Connection, object lens 90 are fixed in the peep hole 110 of eyeglass mounting post 30 by lens cap 91；Eyepiece cap 101 and eyeglass mounting post
It is fixed between 30 for threaded connection, eyepiece 100 by eyepiece cap 101 in the peep hole 110 of eyeglass mounting post 30；Object lens 90
The distance between eyepiece 100 can be adjusted according to the vision condition of observed person's eyes, be not added with repeating herein.
The utility model also includes a packing ring 120, and packing ring 120 is cirque structure, and packing ring 120 is from disc mirror holder 10
PCB40 is fixed for inwall insertion, and the setting of packing ring 120 improves the stability of map figure indirectly.
The utility model also includes a filter layer 130, and filter layer 130 is arranged between PCB40 and Placido disks 50, filter
Photosphere 130 can turn down the brightness of LED and LED spot light is changed into area source, improve image quality；Filter layer is
Translucent sponge and/or the translucent scraps of paper etc. have the material of filter action.
As long as the utility model opens switch 70 when in use, then by the people canthus of the face observed person of object lens 90
Film location, the human eye of the face observer of eyepiece 100, the utility model Main Basiss are projected on the concentric circular bars on eye cornea
The map that line uniform light is presented can be distinguished quickly and easily on cornea with the presence or absence of the state for having astigmatism；If it is examined
There is astigmatism phenomenon on person's cornea eye, the cornea shape that it very easily can be shown according to map according to shadow instrument judges
Go out the type of cornea astigmatic eyes：1st, the oval map of concentric circles judges cornea for regular astigmatism；2nd, concentric circles, which resembles a pear in shape, reflects
As figure is judged as keratoconus；3rd, concentric circles judges cornea for irregular astigmatism in irregular shape map.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (8)
1. a kind of hand-held Placido corneas shine shadow instrument, it is characterised in that the hand-held Placido corneas include according to shadow instrument：
The disc mirror holder of one upper opening inner hollow；
One handle, the handle are detachably arranged on disc mirror holder, and the handle inside disc mirror holder with turning on；
One eyeglass mounting post, the eyeglass mounting post are vertically set in the middle part of disc mirror holder, and eyeglass mounting post is provided with for middle part
The cylindrical-shaped structure of peep hole；
One PCB, the PCB are provided with several and are arranged on disc mirror into the LED of honeycomb array structure distribution, the PCB
Frame bottom；
One Placido disks, the Placido disks by acrylic board and it is some equidistantly and Ya Ke is arranged on concentric circular fashion
Annular black sticker composition on power plate；The Placido disks are arranged in disc mirror holder and above PCB；
One power supply, the power supply are electrically connected by wire with PCB, and power supply is arranged in handle；
One switch, the connection switched for controlling power supply, switch are arranged on the outer surface of handle；
One mirror cover frame, the mirror cover frame are connected through a screw thread mode and covered on the outer wall of disc mirror holder, mirror cover frame be used for pair
Placido disks in disc mirror holder are fixed.
2. a kind of hand-held Placido corneas according to claim 1 shine shadow instrument, it is characterised in that the eyeglass installation
The both ends of post are respectively equipped with object lens and eyepiece, and object lens are located at Placido disks side.
3. a kind of hand-held Placido corneas according to claim 2 shine shadow instrument, it is characterised in that the hand-held
Placido corneas also include a lens cap according to shadow instrument, and to be threadedly coupled between lens cap and eyeglass mounting post, object lens pass through thing
Jing Gai is fixed in the peep hole of eyeglass mounting post.
4. a kind of hand-held Placido corneas according to claim 2 shine shadow instrument, it is characterised in that the hand-held
Placido corneas also include an eyepiece cap according to shadow instrument, and to be threadedly coupled between eyepiece cap and eyeglass mounting post, eyepiece passes through mesh
Jing Gai is fixed in the peep hole of eyeglass mounting post.
5. a kind of hand-held Placido corneas according to claim 1 shine shadow instrument, it is characterised in that the hand-held
Placido corneas also include a packing ring according to shadow instrument, and the packing ring is cirque structure, and packing ring inserts from the inwall of disc mirror holder
PCB is fixed.
6. a kind of hand-held Placido corneas according to claim 1 shine shadow instrument, it is characterised in that the hand-held
Placido corneas also include a filter layer according to shadow instrument, and the filter layer is arranged between PCB and Placido disks.
7. a kind of hand-held Placido corneas according to claim 6 shine shadow instrument, it is characterised in that the filter layer is
Translucent sponge and/or the translucent scraps of paper.
8. a kind of hand-held Placido corneas according to claim 1 shine shadow instrument, it is characterised in that each annular is black
The width all same of color paster, the annular black of a quarter is equal to per the spacing between two neighboring annular black sticker
Paster width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720065953.5U CN207136833U (en) | 2017-01-19 | 2017-01-19 | A kind of hand-held Placido corneas shine shadow instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720065953.5U CN207136833U (en) | 2017-01-19 | 2017-01-19 | A kind of hand-held Placido corneas shine shadow instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207136833U true CN207136833U (en) | 2018-03-27 |
Family
ID=61658576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720065953.5U Expired - Fee Related CN207136833U (en) | 2017-01-19 | 2017-01-19 | A kind of hand-held Placido corneas shine shadow instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207136833U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108420399A (en) * | 2018-04-10 | 2018-08-21 | 天津市索维电子技术有限公司 | A kind of Placido disks lighting system and processing method |
| WO2024037035A1 (en) * | 2022-08-15 | 2024-02-22 | 杭州微晓医疗科技有限公司 | Corneal reflection-based projection apparatus, corneal imaging instrument, corneal topography instrument, and detection method therefor |
-
2017
- 2017-01-19 CN CN201720065953.5U patent/CN207136833U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108420399A (en) * | 2018-04-10 | 2018-08-21 | 天津市索维电子技术有限公司 | A kind of Placido disks lighting system and processing method |
| CN108420399B (en) * | 2018-04-10 | 2024-05-03 | 天津市索维电子技术有限公司 | Placido disc lighting system and processing method |
| WO2024037035A1 (en) * | 2022-08-15 | 2024-02-22 | 杭州微晓医疗科技有限公司 | Corneal reflection-based projection apparatus, corneal imaging instrument, corneal topography instrument, and detection method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207136833U (en) | A kind of hand-held Placido corneas shine shadow instrument | |
| BR112020020286A2 (en) | OPHTHALMIC DEVICE, AND, CASE FOR AN OPHTHALMIC DEVICE. | |
| CN204102106U (en) | A kind of anti-blue light children flat screens structure | |
| CN203220548U (en) | Visual sensitivity training device | |
| CN203134231U (en) | Comprehensive demonstration instrument for geometrical optics | |
| CN105180039B (en) | A kind of health intelligentization education lighting device | |
| CN203861190U (en) | Multifunctional full-automatic distance meter with sliding window | |
| CN206258622U (en) | A kind of microscope with lighting source | |
| CN209422482U (en) | A kind of eyedrops bottle and eye drops positioning device | |
| CN110236897A (en) | Vision training instrument and its application method | |
| CN108670828A (en) | A kind of eyedrops bottle and eye drops positioning device | |
| CN213432997U (en) | Children toy microscope | |
| CN208204653U (en) | A kind of eyeshield learning desk lamp | |
| CN2868257Y (en) | Weak sight therapeutical apparatus | |
| CN206929609U (en) | A kind of radiation proof music learning lamp | |
| CN218038367U (en) | Retina display mould | |
| CN111637947A (en) | Atomization device, aerosol generation device and liquid level display method | |
| CN208123981U (en) | A kind of student lamp tool with protection eyes function | |
| CN207492867U (en) | It is a kind of have can tear-up type eye catch multi-functional blindfolds | |
| CN208481330U (en) | A kind of device for observing pupil size and variation | |
| CN206320578U (en) | A kind of high school student learns to use myopia prevention desk lamp | |
| CN211853625U (en) | Intelligent vision protection desk lamp | |
| CN201208400Y (en) | Eyedrop bottle capable of accuretaly and conveniently dropping eyedrop | |
| CN207640378U (en) | Visual field instrument stimulation screen structure | |
| CN201812428U (en) | Papillary light reflex model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 Termination date: 20190119 |