CN102768403A - Micro-display slit system and micro-display slit method - Google Patents
Micro-display slit system and micro-display slit method Download PDFInfo
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- CN102768403A CN102768403A CN2011101124084A CN201110112408A CN102768403A CN 102768403 A CN102768403 A CN 102768403A CN 2011101124084 A CN2011101124084 A CN 2011101124084A CN 201110112408 A CN201110112408 A CN 201110112408A CN 102768403 A CN102768403 A CN 102768403A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/13—Ophthalmic microscopes
- A61B3/135—Slit-lamp microscopes
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Abstract
The invention discloses a micro-display slit system and a micro-display slit method, relates to the field of optical instruments, and aims to solve the problem that a slit blade of a slit lamp is inconvenient to mount and use. The micro-display slit system comprises a light source (1), a collimating unit (2), a polarizing unit (3), a micro-display chip (4), a micro-display chip drive unit (5), a polarization analysis unit (6), and a projection unit (7). The micro-display chip drive unit (5) drives the micro-display chip (4) to form a slit, a slit blade in an existing slit lamp is replaced, and accordingly the micro-display silt system is simple to mount and use, and regulation of size, shape, light intensity and color of a formed image is more convenient. The micro-display silt system is mainly used for slit lamp microscopes for ophthalmic testing.
Description
Technical field
The present invention relates to a kind of little apparent fissure system and method, especially design a kind of little apparent fissure system and method that is applied to slit-lamp microscope.
Background technology
The fissure system of current slit-lamp generally adopts blade to switch the width of regulating the crack, and crack length and spot size are realized through the diaphragm switched system again, and color transformed employing color filter switched system is realized.These switched system accuracy requirements are high, production, installation, difficult operation the when using.The manufacturing process difficulty is big, and cost is higher relatively, and the size of attainable crack and hot spot, pattern, color, brightness kind are less, and the toning scheme is also comparatively original.
Specifically there is following defective in the fissure system technology of existing slit-lamp:
1. complicated integral structure, element precision is strict, and producting process difficulty is big, and manufacturing cost is high.
2. install and when using adjustment be difficult for.
3. the crack is opened employing and is rotated method of driving around stationary shaft, and crack blade make-position and deployed position height is variant sometimes, causes institute to become the optical quality decline of crack image.
4. structure space is narrow and small, and switchable filter disc kind is few, and attainable hot spot color light kind is few.
5. structure space is narrow and small, and switchable aperture stop size kind is few, and attainable light spot shape is also less with the kind of size.
And, utilize the little apparent chip of numeral as the crack pattern and to its imaging along with the development of the little apparent chip technology of modern digital, be expected to realize the effect identical and remedy the many disadvantages of existing machinery switched system technology with the crack of existing slit-lamp.
Do not see the fissure system and the method that overcome above defective in the market yet, can whole crack blade system, diaphragm switched system and the color filter switched system that substitutes and simplify slit-lamp the Lights section.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing fissure system structure, the combination through optics and microelectric technique provides the design of a kind of new crack, effectively improves complicacy, reliability and the ease of use of slit-lamp system architecture.
Principle of work of the present invention is illumination to be provided for said little apparent chip 4 with said light source 1; Wherein, Said little apparent chip 4 comprises that digital light processing DLP chip, liquid crystal display LCD chip, liquid crystal on silicon show that the LCOS chip can use; Control light and can pass through through controlling said little apparent chip 4, form required crack pattern, display the crack pattern of said little apparent chip 4 through said projecting unit 7 again.The size of crack pattern, shape, color and brightness can realize through the adjusting of the 5 pairs of said little apparent chips 4 in said little apparent chip drives unit.
Technical scheme of the present invention is: system comprises light source 1, projecting unit 7, also is provided with little apparent chip 4, little apparent chip drives unit 5; Said little apparent chip 4 is arranged on the light path between said light source 1 and the said projecting unit 7; After said little apparent chip 4 connects said little apparent chip drives unit 5 and driven by it, on said little apparent chip 4, form the crack that the zone can be different, the part of the inside, crack can be given said projecting unit 7 light transmission or reflection on said little apparent chip 4.
Can also be provided with collimation unit 2; Said collimation unit 2 is arranged on the light path between said light source 1 and the said little apparent chip 4.
Said little apparent chip 4 can be that digital light is handled the DLP chip; The direction of reflection ray is controlled through the reflection angle of controlling the small lens array in said little apparent chip 4 in said little apparent chip drives unit 5, with shape, size and the light intensity of regulating final formation image.
Can also be provided with inclined to one side unit 3; Said inclined to one side unit 3 is arranged on the light path between said light source 1 and the said little apparent chip 4; Said inclined to one side unit 3 can be polaroid or polarization splitting prism.
Can also be provided with analyzing unit 6 on the light path between said little apparent chip 4 and the said projecting unit 7; The inspection of said analyzing unit 6 direction of shaking is vertical with the polarization direction of said inclined to one side unit 3, so that the picture contrast that light became is better; Said analyzing unit 6 can be a polaroid; Can change through the sense of rotation angle of the little apparent chip unit liquid crystal molecule of control, with the image of final formation different light intensity.
Said little apparent chip 4 can be a liquid crystal display LCD chip; Said little apparent chip drives unit 5 can be liquid crystal display LCD chip drives unit; The sense of rotation of the liquid crystal molecule array in the said little apparent chip 4 of said little apparent chip drives unit 5 controls is controlled the break-make of transmission-polarizing light, and vertically changes the polarization direction, with size, shape and the light intensity of regulating final formation image.
Said little apparent chip 4 can be that liquid crystal on silicon shows the LCOS chip; Said little apparent chip drives unit 5 can be that liquid crystal on silicon shows LCOS chip drives unit; The sense of rotation of the liquid crystal molecule array in the said little apparent chip 4 of said little apparent chip drives unit 5 controls is controlled the break-make of polarization by reflection light, and vertically changes the polarization direction, with size, shape and the light intensity of regulating final formation image.
On the incident of said little apparent chip 4 and emitting light path, can be provided with polarization splitting prism 8, simultaneously incident ray and emergent ray are realized incidence polarizing and outgoing analyzing.
Can be provided with color filter in said little apparent chip 4; Perhaps on the light path of said little apparent chip 4 incidents or outgoing, increase the image of color filter with final formation different colours.
On the outside light path in said little apparent chip 4 both sides, can also be provided with rotation colour wheel 9, said rotation colour wheel 9 is provided with the color filter of several different colours; Also be provided with rotation colour wheel driver element 10 and connect said rotation colour wheel 9 and drive its rotation, said rotation colour wheel driver element 10 can also carry out signal with said little apparent chip drives unit 5 and be connected; Through said little apparent chip drives unit 5 and said rotation colour wheel driver element 10 are coordinated control; When the color filter of a certain color faces said light source 1 on the said rotation colour wheel 9; Said little apparent chip drives unit 5 drives said little apparent chip 4 and is adjusted to a certain transmission and reflectivity to produce the light intensity of a certain respective value; Light intensity difference and proportioning that the color filter of different colours is corresponding are adjustable, the different and adjustable image with final formation color.
The present invention compared with prior art has significant advantage and beneficial effect, is embodied in the following aspects:
1. make the slit-lamp one-piece construction simplify, production cost reduces.
2. the high and low position of little apparent element can not change, thereby has guaranteed the reliable and stable of crack picture element.
3. can realize arbitrary graphic pattern, be not limited to what the restriction of diaphragm sheet kind.
4. can realize the multicolour of stepless toning, not receive what the restriction of color filter kind.
5. can regulate the brightness of crack hot spot through the little apparent chip of control, be not limited to through regulating light source power and regulate the brightness of crack hot spot.
6. the adjusting operation when installing and using is very simple, and very accurate.
Description of drawings
Fig. 1 is that digital light is handled the little apparent crack of DLP chip implementation system synoptic diagram, among Fig. 1: light source 1, collimation unit 2, little apparent chip 4, little apparent chip drives unit 5, projecting unit 7.
Fig. 2 is the little apparent crack of a liquid crystal display LCD chip implementation system synoptic diagram, among Fig. 1: light source 1, collimation unit 2, play inclined to one side unit 3, little apparent chip 4, little apparent chip drives unit 5, analyzing unit 6, projecting unit 7.
Fig. 3 is that liquid crystal on silicon shows the little apparent crack of LCOS chip implementation system synoptic diagram, among Fig. 1: light source 1, collimation unit 2, play inclined to one side unit 3, little apparent chip 4, little apparent chip drives unit 5, projecting unit 7, polarization splitting prism 8.
Fig. 4 is that digital light is handled the little apparent crack toning implementation system synoptic diagram of DLP chip, among Fig. 1: light source 1, collimation unit 2, little apparent chip 4, little apparent chip drives unit 5, projecting unit 7, rotation colour wheel 9, rotation colour wheel driver element 10.
Embodiment
Do further elaboration again below in conjunction with the accompanying drawing specific embodiments of the invention:
Fig. 1 is that digital light is handled the little apparent crack of DLP chip implementation system synoptic diagram, and said little apparent chip 4 adopts digital light to handle the DLP chip, and 5 controls of said little apparent chip drives unit also form the crack on said little apparent chip 4.The light that said light source 1 sends arrives said little apparent chip 4 through 2 backs, said collimation unit; In fact small reflective mirror array in the crack becomes a parallel light-struck area source, and the angle of the small reflective mirror of each above it can be by 5 controls of said little apparent chip drives unit; Whether and how many purposes through said projecting unit 7 are arranged the reflection direction of the small reflective mirror array through the said little apparent chip 4 of said little apparent chip drives unit 5 control reaches control light; Just formed different crack patterns on said little apparent chip 4; Small reflective mirror array in the crack reflects light to said projecting unit 7 imagings; Reflection gives the light of said projecting unit 7 how just bright, reflects few just not brightly; Small reflective mirror array outside the crack reflexes to light outside the said projecting unit 7 can not form image.
Fig. 2 is the little apparent crack of a liquid crystal display LCD chip implementation system synoptic diagram, and said little apparent chip 4 adopts liquid crystal display LCD chip, and 5 controls of said little apparent chip drives unit also form the crack on said little apparent chip 4.The light that said light source 1 sends is through behind said collimation unit 2 and said the inclined to one side unit 3; The polarization light of said inclined to one side unit 3 formation arrives said little apparent chip 4; The break-make of light is controlled in the sense of rotation realization of controlling the liquid crystal molecule of said little apparent chip 4 through said little apparent chip drives unit 5; Demonstrate different crack patterns, in this transmission process, the polarization direction has 90 ° variation; If the sense of rotation controlled change of the liquid crystal molecule of said little apparent chip 4, the brightness of emergent ray also can change; Need to form the part in crack on said little apparent chip 4, just need the sense of rotation of its liquid crystal molecule of control, make emergent ray bright, need not form the part in crack, just need the sense of rotation of its liquid crystal molecule of control, make emergent ray very dark.The light that passes said little apparent chip 4 becomes slit image through said projecting unit 7 backs again, thereby realizes the crack image of different sizes, shape according to the difference of input control signal; On the light path of said little apparent chip 4 back, can also be provided with analyzing unit 6, said analyzing unit can increase the contrast of the pattern that forms, and the spuious polarized light of elimination.
Fig. 3 is that liquid crystal on silicon shows the little apparent crack of LCOS chip implementation system synoptic diagram, and said little apparent chip 4 adopts liquid crystal on silicon to show the LCOS chip, and 5 controls of said little apparent chip drives unit also form the crack on said little apparent chip 4.Also be provided with polarization splitting prism 8; The light that said light source 1 sends is through behind said collimation unit 2 and said the inclined to one side unit 3; The polarization light that said inclined to one side unit 3 forms at first arrives said polarization splitting prism 8, and said polarization splitting prism 8 is the P light transmission, and reflects S light to said little apparent chip 4; Once more through said polarization splitting prism 8, said projecting unit 7 is given in refraction then to said little apparent chip 4 with the reflection of S light and after being converted into P light.
Fig. 4 is that digital light is handled the little apparent crack toning implementation system synoptic diagram of DLP chip.
The light that said light source 1 sends passes through the rotation colour wheel 9 colour wheel colour filters of high speed rotating again through behind the said collimation unit 2, also is provided with said rotation colour wheel driver element 10 connections and drives said rotation colour wheel 9.When said little apparent chip 4 adopted digital light to handle the DLP chips, the reflection direction control light of the micro mirror array through controlling said little apparent chip 4 was through the light intensity of said projecting unit 7.Through controlling the reflection direction of said little apparent chip 4 micro mirrors, cooperate the rotation of control colour wheel, the proportioning of the light of multiple color be can realize, and then the toning and the brightness adjustment of crack hot spot realized through said projecting unit 7.
Claims (10)
1.1. little apparent fissure system and method comprise light source (1), projecting unit (7), it is characterized in that, also are provided with little apparent chip (4), little apparent chip drives unit (5); Said little apparent chip (4) is arranged on the light path between said light source (1) and the said projecting unit (7); After said little apparent chip (4) connects said little apparent chip drives unit (5) and is driven by it; In said little apparent chip (4) crack that upward the formation zone can be different, the part that said little apparent chip (4) is gone up the inside, crack can or reflect to said projecting unit (7) the light transmission.
2. little apparent fissure system according to claim 1 and method is characterized in that, can also be provided with collimation unit (2); Said collimation unit (2) is arranged on the light path between said light source (1) and the said little apparent chip (4).
3. little apparent fissure system according to claim 1 and 2 and method is characterized in that, said little apparent chip (4) can be that digital light is handled the DLP chip; The direction of reflection ray is controlled through the reflection angle of the small lens array in the control said little apparent chip (4) in said little apparent chip drives unit (5), with shape, size and the light intensity of regulating final formation image.
4. little apparent fissure system according to claim 1 and 2 and method is characterized in that, can also be provided with inclined to one side unit (3); Said inclined to one side unit (3) is arranged on the light path between said light source (1) and the said little apparent chip (4); Said inclined to one side unit (3) can be polaroid or polarization splitting prism.
5. little apparent fissure system according to claim 4 and method is characterized in that, said little apparent chip (4)
And can also be provided with analyzing unit (6) on the light path between the said projecting unit (7); The inspection of said analyzing unit (6) direction of shaking is vertical with the polarization direction of said inclined to one side unit (3), so that the picture contrast that light became is better; Said analyzing unit (6) can be a polaroid; Can change through the sense of rotation angle of the little apparent chip unit liquid crystal molecule of control, with the image of final formation different light intensity.
6. little apparent fissure system according to claim 4 and method is characterized in that, said little apparent chip (4) can be a liquid crystal display LCD chip; Said little apparent chip drives unit (5) can be liquid crystal display LCD chip drives unit; The sense of rotation of the liquid crystal molecule array in said little apparent chip drives unit (5) said little apparent chip of control (4) is controlled the break-make of transmission-polarizing light, and vertically changes the polarization direction, with size, shape and the light intensity of regulating final formation image.
7. little apparent fissure system according to claim 4 and method is characterized in that, said little apparent chip (4) can be that liquid crystal on silicon shows the LCOS chip; Said little apparent chip drives unit (5) can be that liquid crystal on silicon shows LCOS chip drives unit; The sense of rotation of the liquid crystal molecule array in said little apparent chip drives unit (5) said little apparent chip of control (4) is controlled the break-make of polarization by reflection light, and vertically changes the polarization direction, with size, shape and the light intensity of regulating final formation image.
8. little apparent fissure system according to claim 7 and method; It is characterized in that; On the incident of said little apparent chip (4) and emitting light path, can be provided with polarization splitting prism (8), simultaneously incident ray and emergent ray are realized incidence polarizing and outgoing analyzing.
9. little apparent fissure system according to claim 1 and method is characterized in that, can be provided with color filter in said little apparent chip (4); Perhaps on the light path of said little apparent chip (4) incident or outgoing, increase the image of color filter with final formation different colours.
10. little apparent fissure system according to claim 1 and method; It is characterized in that; On the outside light path in said little apparent chip (4) both sides, can also be provided with rotation colour wheel (9), said rotation colour wheel (9) is provided with the color filter of several different colours; Also be provided with rotation colour wheel driver element (10) and connect said rotation colour wheel (9) and drive its rotation, said rotation colour wheel driver element (10) can also carry out signal with said little apparent chip drives unit (5) and be connected; Through control is coordinated in said little apparent chip drives unit (5) and said rotation colour wheel driver element (10); When the color filter of the last a certain color of said rotation colour wheel (9) faces said light source (1); Said little apparent chip drives unit (5) drives said little apparent chip (4) and is adjusted to a certain transmission and reflectivity to produce the light intensity of a certain respective value; Light intensity difference and proportioning that the color filter of different colours is corresponding are adjustable, the different and adjustable image with final formation color.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101124084A CN102768403A (en) | 2011-05-03 | 2011-05-03 | Micro-display slit system and micro-display slit method |
| PCT/CN2012/074870 WO2012149885A1 (en) | 2011-05-03 | 2012-04-28 | A microscopic slit system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101124084A CN102768403A (en) | 2011-05-03 | 2011-05-03 | Micro-display slit system and micro-display slit method |
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| Publication Number | Publication Date |
|---|---|
| CN102768403A true CN102768403A (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101124084A Pending CN102768403A (en) | 2011-05-03 | 2011-05-03 | Micro-display slit system and micro-display slit method |
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|---|---|
| CN (1) | CN102768403A (en) |
| WO (1) | WO2012149885A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605202A (en) * | 2013-11-08 | 2014-02-26 | 中国科学院苏州生物医学工程技术研究所 | Structured light illumination microscopic imaging system based on silicon-based liquid crystal chip |
| CN104321633A (en) * | 2012-03-21 | 2015-01-28 | 委员会原子能和替代能源 | System for measuring a zone of separation in a substrate |
| CN105581772A (en) * | 2016-02-19 | 2016-05-18 | 上海美沃精密仪器有限公司 | Ophthalmic optical examination system |
| EP3048950A4 (en) * | 2013-09-26 | 2017-06-14 | Topcon Medical Laser Systems, Inc. | Micro-display based slit lamp illumination system |
| CN107049231A (en) * | 2017-05-18 | 2017-08-18 | 厦门大学 | A kind of long-range slit-lamp microscopy examining system |
| CN111281338A (en) * | 2018-12-08 | 2020-06-16 | 珠海尚德嘉毅医疗科技有限公司 | Slit-lamp microscope tester |
| US11116663B2 (en) | 2018-01-19 | 2021-09-14 | Iridex Corporation | System and method for a patient-invisible laser treatment alignment pattern in ophthalmic photomedicine |
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| US5943118A (en) * | 1998-03-19 | 1999-08-24 | Carl Zeiss Jena Gmbh | Arrangement and method for illumination in a stereoscopic ophthalmic microscope |
| CN1735919A (en) * | 2003-01-17 | 2006-02-15 | 汤姆森特许公司 | Sequential multi-segment pulse width modulated display system |
| WO2009145738A1 (en) * | 2008-05-30 | 2009-12-03 | Optotek D.O.O. | Slit lamp with an optoelectronic slit |
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| DE4426877A1 (en) * | 1994-07-29 | 1996-02-01 | Oculus Optikgeraete Gmbh | Arrangement and method for displaying optotypes |
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| ES2243129B1 (en) * | 2004-04-23 | 2006-08-16 | Universitat Politecnica De Catalunya | OPTICAL PROFILE OF DUAL TECHNOLOGY (CONFOCAL AND INTERFEROMETRIC) FOR THE INSPECTION AND THREE-DIMENSIONAL MEASUREMENT OF SURFACES. |
| CN101762956B (en) * | 2009-12-28 | 2012-07-25 | 武汉全真光电科技有限公司 | LCOS projection display system |
| CN202044247U (en) * | 2011-05-03 | 2011-11-23 | 上海美沃精密仪器有限公司 | Micro-display slit device |
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- 2011-05-03 CN CN2011101124084A patent/CN102768403A/en active Pending
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2012
- 2012-04-28 WO PCT/CN2012/074870 patent/WO2012149885A1/en active Application Filing
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| US5943118A (en) * | 1998-03-19 | 1999-08-24 | Carl Zeiss Jena Gmbh | Arrangement and method for illumination in a stereoscopic ophthalmic microscope |
| CN1735919A (en) * | 2003-01-17 | 2006-02-15 | 汤姆森特许公司 | Sequential multi-segment pulse width modulated display system |
| WO2009145738A1 (en) * | 2008-05-30 | 2009-12-03 | Optotek D.O.O. | Slit lamp with an optoelectronic slit |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321633A (en) * | 2012-03-21 | 2015-01-28 | 委员会原子能和替代能源 | System for measuring a zone of separation in a substrate |
| CN104321633B (en) * | 2012-03-21 | 2016-12-14 | 委员会原子能和替代能源 | For measuring the system of interval region in substrate |
| EP3048950A4 (en) * | 2013-09-26 | 2017-06-14 | Topcon Medical Laser Systems, Inc. | Micro-display based slit lamp illumination system |
| CN103605202A (en) * | 2013-11-08 | 2014-02-26 | 中国科学院苏州生物医学工程技术研究所 | Structured light illumination microscopic imaging system based on silicon-based liquid crystal chip |
| CN105581772A (en) * | 2016-02-19 | 2016-05-18 | 上海美沃精密仪器有限公司 | Ophthalmic optical examination system |
| CN107049231A (en) * | 2017-05-18 | 2017-08-18 | 厦门大学 | A kind of long-range slit-lamp microscopy examining system |
| US11116663B2 (en) | 2018-01-19 | 2021-09-14 | Iridex Corporation | System and method for a patient-invisible laser treatment alignment pattern in ophthalmic photomedicine |
| CN111281338A (en) * | 2018-12-08 | 2020-06-16 | 珠海尚德嘉毅医疗科技有限公司 | Slit-lamp microscope tester |
| CN111281338B (en) * | 2018-12-08 | 2022-08-26 | 广东英华投资控股有限公司 | Slit-lamp microscope tester |
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| Publication number | Publication date |
|---|---|
| WO2012149885A1 (en) | 2012-11-08 |
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Application publication date: 20121107 |