CN103417188A - Green light spot indicator for corneal topography instrument - Google Patents
Green light spot indicator for corneal topography instrument Download PDFInfo
- Publication number
- CN103417188A CN103417188A CN2012101597909A CN201210159790A CN103417188A CN 103417188 A CN103417188 A CN 103417188A CN 2012101597909 A CN2012101597909 A CN 2012101597909A CN 201210159790 A CN201210159790 A CN 201210159790A CN 103417188 A CN103417188 A CN 103417188A
- Authority
- CN
- China
- Prior art keywords
- green light
- green glow
- indicator
- led
- light spot
- 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.)
- Pending
Links
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
The invention relates to a green light spot indicator for a corneal topography instrument. The green light spot indicator for the corneal topography instrument comprises a green light spot LED (1), a green light LED base (2) and a deflector disk (3), wherein a cylindrical through hole is formed in the green light LED base (2), the green light spot LED (1) is arranged in the through hole, and the deflector disk (3) is arranged on the lower end face of the green light LED base (2). Compared with a reticle in the prior art, the reticle cannot give out light, and is arranged in a high-luminance cone-shaped disk red lighting source, due to the fact that the green light spot indicator for the corneal topography instrument has a certain luminance, and has green light different from the cone-shaped disk red lighting source, observation through eyes can be easier, peaks of corneas and the center of an imaging optical path are coaxial and coplanar, and later location accuracy of the centers of the corneas can be improved.
Description
Technical field
The present invention relates to a kind of indicator, especially relate to a kind of indicator of the green glow point for corneal topographers.
Background technology
In the measuring process of using the corneal topographers corneal, need the imaging optical path center of eyeball summit over against instrument, the accuracy that guarantee is measured.
At present, the method generally adopted is, at the aperture place of conical disc end, a graticle is installed, and the aiming patterns such as cross division line, annular division line are carved with at the graticle center, when using corneal topographers to measure, the pattern at eye gaze graticle center, to reach the requirement of apparatus measures.
While using the method, because the lighting source brightness of conical disc is larger, and graticle self can not be luminous, and this has just caused graticle to be difficult for being observed, and to measurement, makes troubles.
Summary of the invention
Purpose of the present invention is exactly that a kind of eye-observation, indicator of the green glow point for corneal topographers that degree of accuracy is higher of being easy to is provided in order to overcome the defect that above-mentioned prior art exists.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of indicator of the green glow point for corneal topographers, by green glow point LED, green light LED pedestal and analyse tabula rasa and form, be provided with cylindric through hole in described green light LED pedestal, described green glow point LED is located in through hole, describedly analyses the lower surface that tabula rasa is located at the green light LED pedestal.
Described green glow point LED can also adopt the LED luminous point of other color, comprises other colors such as HONGGUANG, blue light.
Described green light LED pedestal is supporting to be arranged in the imaging optical path of corneal topographers.
Describedly analyse tabula rasa and through hole radially is 45 ° of angles.
The described tabula rasa of analysing, for the green glow point being incorporated into to the imaging optical path of corneal topographers, simultaneously due to its characteristic to the light half-reflection and half-transmission, makes it not affect the imaging of imaging optical path.
The described center of tabula rasa and the optical axis coincidence of green glow point LED of analysing.
Green glow point indicator is installed in the imaging optical path of corneal topographers, analyse tabula rasa center and optical axis coincidence, the green glow that green light LED sends, through analysing the refraction of tabula rasa, be folded to eyes, when using corneal topographers to measure eyes, eyes only need be watched the green glow point attentively, can meet the measurement requirement of corneal topographers.
Compared with prior art, the present invention has the following advantages:
One, be easy to observe: with respect to not irradiative graticle itself, and, under the conical disc red illumination light source in high brightness, green glow point indicator has certain brightness, and has the green glow that is different from conical disc red illumination light source, makes eyes be easier to observe.
Two, corneal vertex and imaging optical path center are coaxial and coplanar, improve the positioning precision of later stage CC.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1 for green glow point LED, 2 for green glow point LED pedestal, 3 for analysing tabula rasa.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of indicator of the green glow point for corneal topographers, its structure as shown in Figure 1, by green glow point LED1, green light LED pedestal 2 and analyse tabula rasa 3 and form, is provided with cylindric through hole in green light LED pedestal 2, green glow point LED1 is located in through hole, analyses the lower surface that tabula rasa 3 is located at green light LED pedestal 2.Wherein, green glow point LED1 can also adopt the LED luminous point of other color, comprise other colors such as HONGGUANG, blue light, green light LED pedestal 2 is supporting to be arranged in the imaging optical path of corneal topographers, analyse tabula rasa 3 and radially be 45 ° of angles with through hole, analyse tabula rasa 3 for the green glow point being incorporated into to the imaging optical path of corneal topographers, the optical axis coincidence of center and green glow point LED, simultaneously due to its characteristic to the light half-reflection and half-transmission, makes it not affect the imaging of imaging optical path.
The present invention in use, green glow point indicator is installed in the imaging optical path of corneal topographers, analyse center and the optical axis coincidence of tabula rasa 3, the green glow that green light LED 1 sends, through analysing the refraction of tabula rasa 3, be folded to eyes, when using corneal topographers to measure eyes, eyes only need be watched the green glow point attentively, can meet the measurement requirement of corneal topographers.
Claims (6)
1. the indicator of the green glow point for corneal topographers, it is characterized in that, this indicator is put LED (1), green light LED pedestal (2) by green glow and is analysed tabula rasa (3) and forms, be provided with cylindric through hole in described green light LED pedestal (2), described green glow point LED (1) is located in through hole, describedly analyses the lower surface that tabula rasa (3) is located at green light LED pedestal (2).
2. a kind of indicator of the green glow point for corneal topographers according to claim 1, is characterized in that, described green glow point LED (1) can also adopt the LED luminous point of other color.
3. a kind of indicator of the green glow point for corneal topographers according to claim 1, is characterized in that, described green light LED pedestal (2) is supporting to be arranged in the imaging optical path of corneal topographers.
4. a kind of indicator of the green glow point for corneal topographers according to claim 1, is characterized in that, the described tabula rasa (3) of analysing radially is 45 ° of angles with through hole.
5. a kind of indicator of the green glow point for corneal topographers according to claim 1, is characterized in that, the described tabula rasa (3) of analysing is for the tabula rasa of half reflection and half transmission.
6. a kind of indicator of the green glow point for corneal topographers according to claim 1, is characterized in that, the described center of tabula rasa (3) and the optical axis coincidence of green glow point LED of analysing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101597909A CN103417188A (en) | 2012-05-21 | 2012-05-21 | Green light spot indicator for corneal topography instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101597909A CN103417188A (en) | 2012-05-21 | 2012-05-21 | Green light spot indicator for corneal topography instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103417188A true CN103417188A (en) | 2013-12-04 |
Family
ID=49642971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101597909A Pending CN103417188A (en) | 2012-05-21 | 2012-05-21 | Green light spot indicator for corneal topography instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103417188A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002011612A1 (en) * | 2000-08-08 | 2002-02-14 | Tracey Technologies, Llc | Method and device for synchronous mapping |
| CN1561181A (en) * | 2001-07-30 | 2005-01-05 | 博士伦公司 | Anterior chamber diameter measurement system from limbal ring measurement |
| CN1810202A (en) * | 2004-12-21 | 2006-08-02 | 佳能株式会社 | Ophthalmic apparatus |
| WO2007042854A1 (en) * | 2005-10-14 | 2007-04-19 | Hesp Technology S.R.L. | Corneal topography apparatus with further integrated devices |
| CN101416870A (en) * | 2008-09-24 | 2009-04-29 | 太原中北新缘科技中心 | Central monitoring position spot alignment device |
| US20120026466A1 (en) * | 2006-01-20 | 2012-02-02 | Clarity Medical Systems, Inc. | Large diopter range real time sequential wavefront sensor |
| CN202981956U (en) * | 2012-05-21 | 2013-06-12 | 晟爵（上海）科技有限公司 | Green light spot indicator for corneal topography |
-
2012
- 2012-05-21 CN CN2012101597909A patent/CN103417188A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002011612A1 (en) * | 2000-08-08 | 2002-02-14 | Tracey Technologies, Llc | Method and device for synchronous mapping |
| CN1561181A (en) * | 2001-07-30 | 2005-01-05 | 博士伦公司 | Anterior chamber diameter measurement system from limbal ring measurement |
| CN1810202A (en) * | 2004-12-21 | 2006-08-02 | 佳能株式会社 | Ophthalmic apparatus |
| WO2007042854A1 (en) * | 2005-10-14 | 2007-04-19 | Hesp Technology S.R.L. | Corneal topography apparatus with further integrated devices |
| US20120026466A1 (en) * | 2006-01-20 | 2012-02-02 | Clarity Medical Systems, Inc. | Large diopter range real time sequential wavefront sensor |
| CN101416870A (en) * | 2008-09-24 | 2009-04-29 | 太原中北新缘科技中心 | Central monitoring position spot alignment device |
| CN202981956U (en) * | 2012-05-21 | 2013-06-12 | 晟爵（上海）科技有限公司 | Green light spot indicator for corneal topography |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105403568B (en) | Nozzle detecting system and method | |
| TWM502849U (en) | Equipment capable of automatically tuning point measurement position according to images of object under test and probe tip | |
| CN102721694A (en) | Apparatus for inspecting light emitting diode and inspecting method using said apparatus | |
| CN102961120A (en) | Ophthalmological analysis apparatus and method | |
| CN102961121A (en) | Ophthalmological analysis apparatus and method | |
| CN102824157A (en) | Skiascope | |
| CN105044118A (en) | AOI light source | |
| CN209692941U (en) | A kind of multi-channel image detection device based on coaxial light source | |
| US20140155726A1 (en) | Dynamic tonometry device and method for controlling coaxiality of probe with eyeball | |
| CN202981956U (en) | Green light spot indicator for corneal topography | |
| US7869041B2 (en) | Color measurement instrument | |
| AU2011259795B2 (en) | Ophthalmic illumination device | |
| CN208110969U (en) | A kind of device detecting LED dot matrix consistency | |
| CN103417188A (en) | Green light spot indicator for corneal topography instrument | |
| CN204924968U (en) | AOI light source | |
| CN104359866B (en) | A kind of retro-reflection measurement apparatus | |
| CN206848572U (en) | A kind of cross optical foresight | |
| JP2011179973A (en) | Contact angle meter | |
| CN101377282A (en) | Method and apparatus for arranging tricolor annular LED | |
| CN106768897A (en) | A kind of imaging optic element periphery light detection means | |
| CN204116016U (en) | A kind of parallel light tube of having electronic graticule | |
| JP2016000137A (en) | Flicker value measuring device and lighting apparatus | |
| CN101148819A (en) | Optical projection method for yarn filoplume tester | |
| CN104390914A (en) | Light source system for visual inspection of green vial machine | |
| TWI821674B (en) | Optical measurement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131204 |