CN211786344U - Oral cavity microscope lighting device - Google Patents
Oral cavity microscope lighting device Download PDFInfo
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- CN211786344U CN211786344U CN202020530098.2U CN202020530098U CN211786344U CN 211786344 U CN211786344 U CN 211786344U CN 202020530098 U CN202020530098 U CN 202020530098U CN 211786344 U CN211786344 U CN 211786344U
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Abstract
The utility model provides an oral cavity microscope lighting device, the device includes: the light source comprises a first illumination light path, a second illumination light path, a dichroic mirror L5, a dioptric lens group L6 and a microscope objective group L10, wherein the first illumination light path irradiates light of a first light source onto a first surface of the dichroic mirror L5; the second illumination light path irradiates light of the first light source onto the second surface of the dichroic mirror L5, and emergent light of the first illumination light path and the second illumination light path are different in color; the first mirror surface is parallel to the second mirror surface, and the dichroic mirror L5 irradiates the first illumination light path and the second illumination light path onto the dioptric lens group L6; emergent light of the dioptric lens group L6 is irradiated on the light incident surface of the microscope objective lens group L10; the exit surface of the microscope objective lens group L10 faces the target. Use the embodiment of the utility model provides a, the illumination of two kinds of different colours is selected.
Description
Technical Field
The utility model relates to an oral medicine field, concretely relates to oral microscope lighting device.
Background
Oral microsurgical treatment is intended to save a neuropathy or irreversibly damaged tooth. Such as infection or inflammation due to tooth decay. The dental caries can be found by oral microscope, even the tooth with irreversible damage to nerve can be preserved by operation treatment, and the bone can be recovered to normal. In order to ensure the imaging quality of the teeth in the oral cavity, a microscope illumination system is also important, but the light in the oral cavity is not good, and how to provide illumination for the microscope in the oral cavity is an urgent technical problem to be solved.
The invention patent application No. 201880032420.4 of the prior art discloses a microscope having a phase contrast transmission illumination means and a fluorescence vertical illumination means for examining a sample in phase contrast transmission illumination and/or in fluorescence vertical illumination, wherein the phase contrast transmission illumination means has a transmission illumination source and transmission illumination optics having a ring diaphragm, wherein the ring diaphragm has a light-tight inner diaphragm region which is surrounded by an at least partially light-transmissive ring region, and a corresponding microscope illumination method, wherein the fluorescence vertical illumination means has a vertical illumination source and vertical illumination optics, wherein the microscope has an objective with a phase ring, wherein the fluorescence vertical illumination beam path generated by the fluorescence vertical illumination means has its cross section at the level of the sample passing through the microscope The surface is then located within the diaphragm region of the interior of the annular diaphragm of the phase contrast illumination means.
The fluorescence vertical illumination beam path generated by the fluorescence vertical illumination means in the prior art is located with its cross section after passing through the sample plane of the microscope within the diaphragm region inside the ring diaphragm of the phase contrast transmission illumination means, i.e. the prior art can only provide monochromatic light illumination.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that solve lies in how to solve the problem that the oral cavity microscope lighting device that exists can only provide monochromatic light illumination among the prior art.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
the embodiment of the utility model provides an oral cavity microscope lighting device, the device includes: a first illumination light path, a second illumination light path, a dichroic mirror L5, a dioptric lens group L6 and a microscope objective lens group L10,
the first illumination optical path irradiates light of the first light source onto the first face of dichroic mirror L5;
the second illumination light path irradiates light of the first light source onto the second surface of the dichroic mirror L5, and emergent light of the first illumination light path and the second illumination light path are different in color;
the first mirror surface is parallel to the second mirror surface, and the dichroic mirror L5 irradiates the first illumination light path and the second illumination light path onto the dioptric lens group L6;
emergent light of the dioptric lens group L6 is irradiated on the light incident surface of the microscope objective lens group L10; the exit surface of the microscope objective lens group L10 faces the target.
Use the embodiment of the utility model provides a close first illumination light path, second illumination light path through dichroic mirror L5 and shine on the target for the same kind, and then provide the illumination of two kinds of different colours and select, only can provide a colour for among the prior art, the utility model discloses the illumination colour that provides is more.
Optionally, the first illumination light path includes: a white light LED, and a set of white light collimators L2, wherein,
white light collimating lens group L2, including: the first meniscus lens G1, the second meniscus lens G2 and the third meniscus lens G3 are arranged in sequence on a common optical axis, and the light incident surface of the first meniscus lens G1 is a concave surface and faces towards the white light LED; the light emitting surface of the first meniscus lens G1 is a convex surface facing the light incident surface of the second meniscus lens G2;
the light incident surface of the second meniscus lens G2 is a concave surface facing the light emergent surface of the first meniscus lens G1; the light emitting surface of the second meniscus lens G2 is a convex surface facing the light incident surface of the third meniscus lens G3;
the light incident surface of the third meniscus lens G3 is a concave surface facing the light emergent surface of the second meniscus lens G2; the light emitting surface of the third meniscus lens G3 is a convex surface, and faces the first surface of the dichroic mirror L5.
Optionally, the color temperature of the white light LED is 3000K, and the LEDs have a maximum value in the range of 440nm-480nm and 580nm-630nm, respectively.
Optionally, the second illumination light path includes: a violet light source L7, a violet collimating lens group L8 and a first focusing lens L9, wherein,
purple light collimating lens group L8 includes: the fourth meniscus lens G4 and the first biconvex lens G5 are arranged on a common optical axis, and the incident surface of the fourth meniscus lens G4 is a concave surface facing the purple light source L7; the light emitting surface of the fourth meniscus lens G4 is a convex surface, and faces the light incident surface of the first biconvex lens G5;
the light emitting surface of the first biconvex lens G5 faces the light incident surface of the first focusing lens L9, and the first focusing lens L9 is a biconvex lens.
Optionally, a violet light source L7, having a spectrum with a maximum in the range 380nm to 420 nm.
Optionally, a filter turntable L3 and a second focusing lens L4 are further provided in order on the optical path from the first illumination optical path to the dichroic mirror L5, wherein,
the annular array is equipped with a plurality of light filters on light filter carousel L3, and the distance that each light filter center reaches light filter carousel L3 is all equal, and when rotating light filter carousel L3, the optical axis of first illumination light path passes corresponding light filter, and the colour of light filter includes: green and orange;
the filters on the filter turntable L3 are located on the same optical path as the second focusing lens L4.
Optionally, the optical filter includes:
an orange filter F1, a yellow filter F2, a fluorescent filter F3, a visible light large spot filter F4, a middle spot filter F5 and a small spot filter F6;
the orange filter F1, the yellow filter F2, the fluorescent filter F3 and the visible light large-spot filter F4 are the same in size;
the diameter of the middle light spot filter F5 is smaller than that of the orange filter F1;
the small spot filter F6 filter diameter is smaller than the medium spot filter F5 diameter.
Optionally, the dioptric lens group L6 is located right above the microscope objective group L10, and the projection of the dioptric lens group L6 is located within the edge range of the microscope objective group L10.
Optionally, the dioptric lens group L6 includes: a right angle prism G6 and a plano-convex lens G7, wherein,
the right-angle prism G6 totally reflects the incident light to the incident surface of the plano-convex lens G7, and the incident surface of the plano-convex lens G7 is a plane;
the light exit surface of the plano-convex lens G7 is convex and faces the microscope objective lens group L10.
Optionally, the apparatus further comprises: and the optical path single selection circuit is used for controlling the first illumination optical path and the second illumination optical path to work in a time-sharing mode.
The utility model has the advantages that:
use the embodiment of the utility model provides a close first illumination light path, second illumination light path through dichroic mirror L5 and shine on the target for the same kind, and then provide the illumination of two kinds of different colours and select, only can provide a colour for among the prior art, the utility model discloses the illumination colour that provides is more.
Drawings
Fig. 1 is a schematic structural diagram of an oral microscope illumination device according to an embodiment of the present invention;
fig. 2 is a light emission spectrum of a white light LED in an illumination device of an oral microscope according to an embodiment of the present invention;
fig. 3 is a light emission spectrum of a violet LED in an illumination device of an oral microscope according to an embodiment of the present invention;
fig. 4 is a coating curve diagram of a dichroic mirror in an illumination device of an oral microscope according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a filter disk in an illumination apparatus of an oral microscope according to an embodiment of the present invention.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an oral microscope illumination device according to an embodiment of the present invention, as shown in fig. 1 and fig. 1, the device includes: a first illumination light path, a second illumination light path, a dichroic mirror L5, a dioptric lens group L6 and a microscope objective lens group L10,
the first illumination optical path irradiates light of the first light source onto the first face of dichroic mirror L5; fig. 2 is a light emission spectrum of a white light LED in an illumination device of an oral microscope, as shown in fig. 2, a first illumination light path includes: a white light LED, and a set of white light collimators L2, wherein,
white light collimating lens group L2, including: the first meniscus lens G1, the second meniscus lens G2 and the third meniscus lens G3 are arranged in sequence on a common optical axis, and the light incident surface of the first meniscus lens G1 is a concave surface and faces towards the white light LED; the light emitting surface of the first meniscus lens G1 is a convex surface facing the light incident surface of the second meniscus lens G2; the light incident surface of the second meniscus lens G2 is a concave surface facing the light emergent surface of the first meniscus lens G1; the light emitting surface of the second meniscus lens G2 is a convex surface facing the light incident surface of the third meniscus lens G3; the light incident surface of the third meniscus lens G3 is a concave surface facing the light emergent surface of the second meniscus lens G2; the light emitting surface of the third meniscus lens G3 is a convex surface, and faces the first surface of the dichroic mirror L5. The white light LED has a color temperature of 3000K and illuminates the oral tooth surface in a reflective manner, and has a maximum value in the range of 440nm-480nm and 580nm-630nm respectively. The first maximum of the white light spectrum is in the range 580nm-630nm in the yellow-red spectral range and the second maximum is in the range 440nm-480nm in the blue spectral range. It is noted that the range of the first maximum value is wider than the range of the second maximum value. Between these maxima there is a minimum at about 470 nm. In practical applications, the maximum in the range of 440nm to 480nm may be greater than, less than, or equal to the maximum in the range of 580nm to 630 nm.
The second illumination light path irradiates light of the first light source onto the second surface of the dichroic mirror L5, and emergent light of the first illumination light path and the second illumination light path are different in color; fig. 3 is a light emission spectrum of violet light LED in the illumination device of the oral cavity microscope, the second illumination light path includes: the device comprises a purple light source L7, a purple light collimating lens group L8 and a first focusing lens L9, wherein the purple light source L7 illuminates the surfaces of oral teeth in a reflective mode. Purple light collimating lens group L8 includes: the fourth meniscus lens G4 and the first biconvex lens G5 are arranged on a common optical axis, and the incident surface of the fourth meniscus lens G4 is a concave surface facing the purple light source L7; the light emitting surface of the fourth meniscus lens G4 is a convex surface, and faces the light incident surface of the first biconvex lens G5; the light emitting surface of the first biconvex lens G5 faces the light incident surface of the first focusing lens L9, and the first focusing lens L9 is a biconvex lens. The spectrum of the violet light source L7 has a maximum in the range of 380nm to 420 nm. The first focusing lens L9 focuses the light as collimated light.
The first mirror surface is parallel to the second mirror surface, and dichroic mirror L5 irradiates the first illumination light path and the second illumination light path onto refractor set L6. Fig. 4 is a coating curve diagram of the dichroic mirror in the lighting device of the oral microscope, as shown in fig. 5, the dichroic mirror L5 transmits the spectrum of the white light LED L1 and reflects the spectrum of the violet light LED L7. The dichroic mirror mainly has the functions of reflecting purple light, transmitting the visible light, receiving white light and purple light paths, and having the reflectivity of more than 95% for the purple light within the range of 380nm to 420nm and the transmissivity of more than 95% for the white light within the range of 480nm to 700 nm. In practical applications, the first illumination light path and the second illumination light path are irradiated on the same point of the dichroic mirror L5, and the first illumination light path refracted by the dichroic mirror L5 and the second illumination light path reflected by the dichroic mirror L5 are overlapped light paths.
The dioptric lens group L6 is positioned right above the microscope objective lens group L10, and the projection of the dioptric lens group L6 is positioned within the edge range of the microscope objective lens group L10. Emergent light of the dioptric lens group L6 is irradiated on the light incident surface of the microscope objective lens group L10; the light exit surface of the microscope objective lens group L10 faces the target dioptric lens group L6, and comprises: the light source comprises a right-angle prism G6 and a planoconvex lens G7, wherein the right-angle prism G6 totally reflects incident light rays to the light incident surface of the planoconvex lens G7, and the light incident surface of the planoconvex lens G7 is a plane; the light exit surface of the plano-convex lens G7 is convex and faces the microscope objective lens group L10.
Further, the apparatus further comprises: and the optical path single selection circuit is used for selecting the first illumination optical path or the second illumination optical path to work in a time-sharing mode. When the rotary filter is rotated to the fluorescent filter, the white light LED L1 is powered off under electronic control, and the purple light LED L7 is powered on to emit purple light to illuminate the surface of teeth, so that fluorescent substances of the teeth excite fluorescence.
The embodiment of the utility model provides an in the embodiment of the utility model first illumination light path and second illumination light path can't be opened simultaneously, and the second illumination light path is opened only when the light filter rotary disk rotates to fluorescence light filter position, when switching to first illumination light path, white light LED L1 provides orange light, green glow illumination, big white light facula illumination and little white light facula illumination for microscope imaging; when switched to the second illumination path, the violet LED L7 provides violet light to the caries sample, which excites fluorescent species in the caries causing fluorescence to be observed microscopically.
In a specific implementation manner of the embodiment of the present invention, fig. 4 is a schematic structural diagram of a filter disc in an oral cavity microscope illumination device according to an embodiment of the present invention, and as shown in fig. 4, a filter turntable L3 and a second focusing lens L4 are further sequentially disposed on a light path from a first illumination light path to a dichroic mirror L5, wherein,
a plurality of filters are arranged on the filter carousel L3 in a circular array. The optical filter includes: an orange filter F1, a yellow filter F2, a fluorescent filter F3, a visible light large spot filter F4, a middle spot filter F5 and a small spot filter F6; the orange filter F1, the yellow filter F2, the fluorescent filter F3 and the visible light large-spot filter F4 are the same in size; the diameter of the middle light spot filter F5 is smaller than that of the orange filter F1; the small spot filter F6 filter diameter is smaller than the medium spot filter F5 diameter. The visible light large light spot filter F4, the middle light spot filter F5 and the small light spot filter F6 are switched with each other, so that the light spot size of white light illumination can be adjusted. Orange, green, fluorescent illumination may also be provided for microscope imaging. Orange spot: the resin material can be prevented from being cured too fast during irradiation; green light spot: the tiny nerve vessels are seen clearly in the blood environment of the operation.
Distances from the centers of the filters to the filter turntable L3 are equal, and when the filter turntable L3 is rotated, the optical axis of the first illumination light path passes through the corresponding filter, and the color of the filter comprises: green and orange. The operator rotates the light filtering rotary disc to the orange light filter, the light spot irradiated to the tooth is orange, and the resin material is prevented from being cured too fast during dental operation. When the light spot is adjusted to be green, the tiny nerve vessels can be clearly seen in the blood environment of the oral operation, and the operation is more facilitated. When violet light is incident on a tooth through an illumination path, the violet excitation light causes fluorescence to be generated in an object with caries stained by a fluorescent pigment, and the radiated fluorescence enters a microscopic image to clearly and clearly display a damaged portion of the tooth, thereby facilitating targeted tooth filling and restoration operations. The utility model discloses can switch over in real time fast and shine the facula, satisfy the needs of medical treatment clinical operation.
In addition, in the oral cavity microscope illumination, compared with a halogen lamp, the LED has the advantages of lower energy consumption, longer service life, good stability and small size. For oral surgery illumination, white LEDs are mainly used. White light is divided into cold white light and warm white light, the operation time of medical operation is generally longer, eyes are easy to generate dryness and fatigue after long-time operation in the cold white light environment, warm white light is more advantageous, and the comfort level of eyes to warm white light is higher.
In addition, the embodiment of the utility model provides a small-size light weight of device, compact structure, and lens are all environmental protection spherical glass lens.
Finally, it should be emphasized that the optical parameters of each optical element of the white light collimating lens group L2, the violet light collimating lens group L8, the microscope objective lens group L10 and the dioptric lens group L6 can be selected according to the target condition to be observed, and related lens groups in the prior art can also be used.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. An oral microscope illumination device, the device comprising: a first illumination light path, a second illumination light path, a dichroic mirror (L5), a dioptric lens (L6) and a microscope objective lens (L10), wherein,
the first illumination optical path irradiates light of the first light source onto a first face of a dichroic mirror (L5);
the second illumination light path irradiates light of the first light source onto a second surface of the dichroic mirror (L5), and emergent light of the first illumination light path and the second illumination light path are different in color;
the first surface is parallel to the second surface, and the dichroic mirror (L5) irradiates the first illumination light path and the second illumination light path onto the dioptric lens group (L6);
emergent light of the dioptric group (L6) is irradiated on the light incident surface of the microscope objective group (L10); the exit surface of the microscope objective lens group (L10) faces the target.
2. The oral microscope illuminator of claim 1, wherein the first illumination path comprises: a white light LED, and a set of white light collimators (L2), wherein,
a set of white light collimators (L2) comprising: the white LED comprises a first meniscus lens (G1), a second meniscus lens (G2) and a third meniscus lens (G3) which are arranged in sequence on a common optical axis, wherein the light incident surface of the first meniscus lens (G1) is a concave surface and faces towards the white LED; the light emitting surface of the first meniscus lens (G1) is a convex surface and faces the light entering surface of the second meniscus lens (G2);
the light incident surface of the second meniscus lens (G2) is a concave surface and faces the light emergent surface of the first meniscus lens (G1); the light emitting surface of the second meniscus lens (G2) is a convex surface and faces the light entering surface of the third meniscus lens (G3);
the light incident surface of the third meniscus lens (G3) is a concave surface and faces the light emergent surface of the second meniscus lens (G2); the light emitting surface of the third meniscus lens (G3) is convex and faces the first surface of the dichroic mirror (L5).
3. The oral microscope illuminator of claim 2, wherein the white light LED has a color temperature of 3000K and a spectrum having a maximum in each of 440nm to 480nm and 580nm to 630 nm.
4. The oral microscope illuminator of claim 1, wherein the second illumination path comprises: a violet light source (L7), a violet collimating lens group (L8) and a first focusing lens (L9), wherein,
set of violet collimating lenses (L8), comprising: the fourth meniscus lens (G4) and the first biconvex lens (G5) are arranged on the same optical axis, and the light incident surface of the fourth meniscus lens (G4) is a concave surface and faces the purple light source (L7); the light emitting surface of the fourth meniscus lens (G4) is a convex surface and faces the light incident surface of the first biconvex lens (G5);
the light emitting surface of the first biconvex lens (G5) faces the light incident surface of the first focusing lens (L9), and the first focusing lens (L9) is a biconvex lens.
5. An oral microscope illuminator according to claim 4, characterised by a source of violet light (L7) having a spectrum with a maximum in the range 380nm to 420 nm.
6. The oral microscope illumination device according to claim 1, wherein a filter turntable (L3) and a second focusing lens (L4) are further provided in this order on the optical path from the first illumination optical path to the dichroic mirror (L5), wherein,
a plurality of optical filters are arranged on the optical filter rotating disc (L3) in an annular array mode, the distances from the centers of the optical filters to the optical filter rotating disc (L3) are equal, when the optical filter rotating disc (L3) is rotated, the optical axis of the first illumination light path penetrates through the corresponding optical filters, and the colors of the optical filters comprise: green and orange;
the filter on the filter turntable (L3) and the second focusing lens (L4) are positioned on the same optical path.
7. The oral microscope illumination device of claim 6, wherein the filter comprises:
an orange filter (F1), a yellow filter (F2), a fluorescent filter (F3), a visible light large spot filter (F4), a middle spot filter (F5) and a small spot filter (F6);
the orange filter (F1), the yellow filter (F2), the fluorescent filter (F3) and the visible light large spot filter (F4) are the same in size;
the filter diameter of the middle light spot filter (F5) is smaller than that of the orange filter (F1);
the small spot filter (F6) has a smaller filter diameter than the medium spot filter (F5).
8. The oral microscope illumination device according to claim 1, wherein the dioptric lens group (L6) is located directly above the microscope objective group (L10), and the projection thereof is located within the edge of the microscope objective group (L10).
9. The oral microscope illuminator according to claim 1, wherein the dioptric optical assembly (L6) comprises: a right angle prism (G6) and a plano-convex lens (G7), wherein,
the right-angle prism (G6) totally reflects the incident light to the light incident surface of the planoconvex lens (G7), and the light incident surface of the planoconvex lens (G7) is a plane;
the light-emitting surface of the plano-convex lens (G7) is convex and faces the microscope objective group (L10).
10. The oral microscope illuminator of claim 1, further comprising: and the optical path single selection circuit is used for selecting the first illumination optical path or the second illumination optical path to work in a time-sharing mode.
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| CN202020530098.2U CN211786344U (en) | 2020-04-13 | 2020-04-13 | Oral cavity microscope lighting device |
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| CN202020530098.2U CN211786344U (en) | 2020-04-13 | 2020-04-13 | Oral cavity microscope lighting device |
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