CN202568205U - Lighting system for anterior segment detection - Google Patents
Lighting system for anterior segment detection Download PDFInfo
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- CN202568205U CN202568205U CN 201220002040 CN201220002040U CN202568205U CN 202568205 U CN202568205 U CN 202568205U CN 201220002040 CN201220002040 CN 201220002040 CN 201220002040 U CN201220002040 U CN 201220002040U CN 202568205 U CN202568205 U CN 202568205U
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- crack
- control unit
- lcd panel
- lighting system
- anterior ocular
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- 238000005259 measurement Methods 0.000 abstract description 3
- 239000003086 colorant Substances 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 abstract description 2
- 238000012876 topography Methods 0.000 abstract description 2
- 210000000695 crystalline len Anatomy 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 4
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- 230000001186 cumulative effect Effects 0.000 description 3
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- 230000004075 alteration Effects 0.000 description 1
- 210000002159 anterior chamber Anatomy 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000795 conjunctiva Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 210000000554 iris Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Images
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- Liquid Crystal (AREA)
Abstract
The utility model discloses a lighting system for anterior segment detection, comprising a light source, and a condenser, a liquid-crystal panel unit in three colors of R, G and B or a digital light processor (DLP), a lower projecting mirror set and a reflecting mirror, with the latter four being distributed in order along the emitting direction of the light source. The condenser and the lower projecting mirror set are coaxially arranged, and the liquid-crystal panel or the digital micro-mirror unit is connected to a control unit. The control unit comprises a computer system. Preferably, the computer system is connected to at least one control means of a game control stick, a mouse and a keyboard. The lighting system for anterior segment detection is advantageous in that the structure is simple, control is easy and performance is stable; imaging quality is high and image precision is good; the lighting system can be used for data measurement, like cornea topography inspection and cornea curvature measurement.
Description
Technical field
This utility model relates to a kind of ophthalmic medical optical device, relates in particular to a kind of novel anterior ocular segment and detects illuminator.
Background technology
Slit lamp microscope is the most used a kind of optical device of ophthalmology, is mainly used in that to observe eyelid, conjunctiva, sclera, cornea, anterior chamber, iris, pupil, crystalline lens and vitreous body preceding 1/3, and then the position of definite pathological changes, character, size and the degree of depth thereof.Slit lamp microscope lighting source at present commonly used comprises two kinds of light source and following light sources, and it mainly adopts mechanical system control crack width, shape, direction and color etc., and this control mode has drawback: (1) is owing to exist the gap between the apertured plate and the crack edge of a knife; Therefore, when projecting to focusing rod (projecting to eyeball surface during real work), because the difference of object plane; Cause picture not on same focal plane, promptly when the crack was clear, the hot spot periphery was fuzzy; During real work; When slit image inspection clearly was transformed into the small light spot inspection, small light spot blured, and needed focusing again.(2) the crescent moon platform of control crack direction of rotation small skew occurs after in the transportation of being everlasting, being given a shock, thereby causes crack width when rotation direction to change, and quality is observed in influence.(3) the crack edge of a knife must be polished very sharply, thereby makes the slit image edge clear not have burr, if thicker, also diffraction possibly occur, makes the slit image edge rainbow phenomena occur, causes the observation downgrade; Require the control slit image narrow more good more during narrow crack, but because the trueness error of frame for movement, general minimum crack can only reach 0.1mm at present, and that can't do is narrower.(4) because the pure frame for movement that adopts; Causing service time, there was a mechanical failure long slightly or transportation vibrations back; Similar crack is stuck can't be closed, the crack is closed automatically, the crack big or small first-class mechanical breakdown influence occurs and uses, even obvious fault do not occur, but because the mechanical structure parts complex structure; One's name is legion; The not high or transportation vibrations cause of precision during process and assemble, but even cumulative error appears after the very high numerous parts combinations of machining accuracy, not good situation of feel or feel concordance are relatively poor in the time of also can occurring using.(5) light filter is adopted in color control, because that light filter adds color sintering precision requirement in man-hour is very high, aberration often occurs, thereby still has part HONGGUANG to see through when causing normally fluorescence excitation perhaps to require complete filter red, causes the inspections and examinations mistake.(6) owing to adopt the mechanical blades mouth mechanism, can only appear a crack at every turn, when the patient has the above sufferer in two places, can only observe respectively through moving slit lamp.Simultaneously, traditional slit lamp can only check with crack and hot spot mode, so function is confined to observe, and do not have measurement function.
The utility model content
The purpose of this utility model is to deficiency of the prior art, proposes a kind of novel anterior ocular segment and detects illuminator.
For realizing the foregoing invention purpose, this utility model has adopted following technical scheme:
A kind of anterior ocular segment detects illuminator; Comprise light source; And the condenser lens, LCD panel unit or the digital light treatment facility that distribute successively along the source light exit direction, projectoscope group and reflecting mirror down, said LCD panel unit or digital light treatment facility are connected with control unit.
Said LCD panel unit comprises R, G, the trichroism LCD panel of B.
Said control unit comprises computer system.
Said control unit also with game paddle, mouse and keyboard at least a controlling equipment be connected.
Said condenser lens and the coaxial setting of following projectoscope group.
This utility model will be based on the LCD of liquid crystals transmit imaging or DLP (the digital light processor that forms images according to luminous reflectance; The digital light treatment facility) is placed on the position, crack; Duty through control LCD and DLP; Realization utilizes optical projection system will look like to project on the focal plane to the adjustment of crack shape, direction, color etc. then, reaches the effect of observing illumination.
Below in conjunction with the operation principle of LCD and DLP projector, work process and effective effect of this utility model is further described:
The LCD projection is a photoelectric effect of utilizing liquid crystal, and promptly being arranged under the effect of electric field of liquid crystal molecule changes, and influences the light transmittance and the reflectance of liquid crystal cells, thereby produces the image that different gray-levels and color are arranged.This point is similar with the principle of LCD liquid crystal display.Now general is three liquid crystal board projectors, and it is to be divided into R, G, B three-beam to high light through spectroscope by a cover optical system, sees through R, G, the trichroism liquid crystal board of B respectively; Signal is through the AD conversion; Modulation is added on the liquid crystal board, through unlatching, the closure of control liquid crystal cells, thus the break-make of control light path; R, G, B light converge in prism at last, on screen, form coloured image by projection lens projects.
And the core of DLP projector is DMD (digital micro-mirror device), i.e. digital micro-mirror device.That now more common is the DLP that is made up of a slice DMD.The light that light source sends divides colour wheel through (60 revolutions per seconds) of a high speed rotating, resolves into R, G, B three coloured light of different periods, alternately penetrates on the DMD surface.DMD is made up of a lot of small eyeglasses, and each little eyeglass all can rotate freely between+12 degree and-12 degree.Input signal acts on the dmd chip after treatment, realizes the unlatching and closure of light path through the anglec of rotation of control micromirror.The R of last different periods, G, B form complete coloured image by DMD micromirror reflection back stack.
Structural design by this utility model; Only need regulate and control LCD, DLP through setting program; And then realize the image adjustment, and can form projection different, that vary in color, make the doctor carry out all kinds of observations easily; Simultaneously can two above cracks of transmission even can throw annulus, thus make slit lamp can check that corneal topography, corneal curvature etc. are used for the new function of DATA REASONING.In a word, compared with prior art, the advantage of this utility model is at least:
(1) because crack and hot spot produce by liquid crystal display screen, therefore, on the focal plane similarly is complete homogeneity.And, can not occur concentric reducer or width when rotating and change in the crack
(2) colour by control units such as computing system control, can reach 64 fully, realizes RGB, and can real-time regulated, and not only color is howed much than traditional slit lamp, can more accurately control the precision of color simultaneously.
(3) because thickness of liquid crystal is extremely thin, therefore, the definition at edge, crack and solution rainbow phenomena can be accomplished fully.Because the projection system light path is a reduction system, and minimum widith can be accomplished a pixel on liquid crystal display screen, the narrowest crack can reach 0.01mm after projecting simultaneously.
(4) owing to adopt the computer system control crack, the crack that can avoid the error in transportation or assembling process to cause can't be closed, chance failure is closed or the like in crack downgrade or crack automatically.
(5) preferred, adopt control unit with game paddle, mouse-keyboard etc., when controlling, can avoid producing the not good or inconsistent phenomenon of feel that the precision cumulative error causes in the assembling.
Description of drawings
Fig. 1 is the structural representation of this utility model one preferred embodiment;
Wherein each assembly and Reference numeral thereof are respectively: light source 1, condenser lens 2, LCD panel unit 3, last projectoscope group 4, following projectoscope group 5, reflecting mirror 6 and eyeball position 7.
The specific embodiment
Be further described below in conjunction with accompanying drawing and a preferred embodiment technical scheme this utility model.
Consult Fig. 1; This anterior ocular segment detects illuminator and comprises light source 1 and the condenser lens 2 that distributes successively along the source light exit direction, LCD panel unit 3, goes up projectoscope group 4 (can select for use according to actual needs), following projectoscope group 5 and reflecting mirror 6; Said LCD panel is connected with control unit, and its duty is controlled by control unit.
Said condenser lens, upward projectoscope group and the coaxial setting of following projectoscope group.
Said LCD panel unit can be selected R, G, the trichroism LCD panel of B for use, but also can preferably adopt the above LCD panel of four colors.
Said control unit comprises computer system, this computer system also with game paddle, mouse and keyboard at least a controlling equipment be connected.
Aforementioned light source can be luminaires such as Halogen light, LED, but is not limited thereto.
The advantage that this anterior ocular segment detects illuminator is:
(1) because crack and hot spot produce by liquid crystal display screen, therefore, on the focal plane similarly is complete homogeneity.And, can not occur concentric reducer or width when rotating and change in the crack
(2) colour by control units such as computing system control, can reach 64 fully, realizes RGB, and can real-time regulated, and not only color is howed much than traditional slit lamp, can more accurately control the precision of color simultaneously.
(3) because thickness of liquid crystal is extremely thin, therefore, the definition at edge, crack and solution rainbow phenomena can be accomplished fully.Because the projection system light path is a reduction system, and minimum widith can be accomplished a pixel on liquid crystal display screen, the narrowest crack can reach 0.01mm after projecting simultaneously.
(4) owing to adopt the computer system control crack, the crack that can avoid the error in transportation or assembling process to cause can't be closed, chance failure is closed or the like in crack downgrade or crack automatically.
(5) preferred, adopt control unit with game paddle, mouse-keyboard etc., when controlling, can avoid producing the not good or inconsistent phenomenon of feel that the precision cumulative error causes in the assembling.
Although the embodiment of this utility model is open as above; But it is not restricted to listed utilization in description and the embodiment; It can be applied to the field of various suitable this utility model fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the general concept that does not deviate from claim and equivalency range and limited, the legend that this utility model is not limited to specific details and illustrates here and describe.
Claims (5)
1. an anterior ocular segment detects illuminator; Comprise light source; It is characterized in that; It also comprises condenser lens, LCD panel unit or digital light treatment facility, following projectoscope group and the reflecting mirror that distributes successively along the source light exit direction, and said LCD panel unit or digital light treatment facility are connected with control unit.
2. anterior ocular segment according to claim 1 detects illuminator, it is characterized in that said LCD panel unit adopts trichroism LCD panel.
3. anterior ocular segment according to claim 1 detects illuminator, it is characterized in that said control unit comprises computer system.
4. anterior ocular segment according to claim 1 detects illuminator, it is characterized in that, said control unit also with game paddle, mouse and keyboard at least a controlling equipment be connected.
5. anterior ocular segment according to claim 1 detects illuminator, it is characterized in that said condenser lens and the coaxial setting of following projectoscope group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220002040 CN202568205U (en) | 2012-01-05 | 2012-01-05 | Lighting system for anterior segment detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220002040 CN202568205U (en) | 2012-01-05 | 2012-01-05 | Lighting system for anterior segment detection |
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| Publication Number | Publication Date |
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| CN202568205U true CN202568205U (en) | 2012-12-05 |
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| CN 201220002040 Expired - Lifetime CN202568205U (en) | 2012-01-05 | 2012-01-05 | Lighting system for anterior segment detection |
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| CN (1) | CN202568205U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499632A (en) * | 2012-01-05 | 2012-06-20 | 沈激 | Ocular anterior segment detection and illumination system |
| CN107783267A (en) * | 2016-08-30 | 2018-03-09 | 北京大学 | Micro- amplification system |
-
2012
- 2012-01-05 CN CN 201220002040 patent/CN202568205U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499632A (en) * | 2012-01-05 | 2012-06-20 | 沈激 | Ocular anterior segment detection and illumination system |
| CN107783267A (en) * | 2016-08-30 | 2018-03-09 | 北京大学 | Micro- amplification system |
| CN107783267B (en) * | 2016-08-30 | 2024-04-26 | 北京大学 | Microscopic amplifying system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 215000 Jiangsu Province, Suzhou City Golden Lion River No. 45 Golden Lion Culture of science and Technology Industrial Park 3-105 Patentee after: Softcom limited is taken advantage of in Suzhou million Address before: Song Yun Pingjiang District of Suzhou City, Jiangsu Province, 215000 No. 16 Room 305 Patentee before: Shen Ji |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215000 Jinfan Road, Kun Suzhou District, Suzhou, Jiangsu Province, No. 79 Patentee after: Suzhou Sihai Sihai Technology Co., Ltd. Address before: 215000 Jiangsu Province, Suzhou City Golden Lion River No. 45 Golden Lion Culture of science and Technology Industrial Park 3-105 Patentee before: Softcom limited is taken advantage of in Suzhou million |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |