CN219828591U - Optical system and lighting device - Google Patents

Abstract

The utility model provides an optical system and an illumination device, wherein the optical system comprises N first illumination components and M second illumination components, N is more than or equal to 3, M is more than or equal to 5,N first illumination components and M second illumination components are arranged around an equiangular central array of an illumination central axis, the N first illumination components and the M second illumination components are respectively and independently controlled, the light emitting surfaces of the N first illumination components are positioned on the same plane, the light emitting surfaces of the M second illumination components are positioned on the same plane, the N first illumination components are used for forming rectangular light spots, and the M second illumination components are used for forming round light spots and/or elliptical light spots; according to the utility model, the first lighting assembly meets the lighting requirement of dental operation, the second lighting assembly meets the lighting requirement of operation, and the first lighting assembly and the second lighting assembly are independently controlled to meet the rapid switching between the circular light spots and the rectangular light spots according to different requirements, so that multiple purposes of one lamp are realized.

Description

Optical system and lighting device

Technical Field

The present utility model relates to the technical field of medical illumination devices, and in particular, to an optical system and an illumination device.

Background

With the popularization of the application of the LED light source, the LED medical lamp is designed in a variable layer, and in the dental industry, the dental lamp is used for illuminating the mouth (oral cavity) of a patient when performing dental treatment, because the main function of the medical illumination is to realize local illumination, enough brightness needs to be provided to weaken shadow projection when performing surgical diagnosis, and light needs to be weakened when performing dental operation, so that the problem of visual fatigue caused by excessive light illumination due to long-term operation needs is prevented, and different light spot shapes need to be switched. The existing situation is that two lighting devices with different light spots are required to be provided, and two lamps with different functions are not effectively combined together or are combined together, but the structure is complex, the operation is difficult, and different requirements cannot be met. Therefore, the realization of rapid switching of different spot shapes and the easy operation are technical problems to be solved at present.

Disclosure of Invention

The main object of the present utility model is to overcome the above drawbacks and disadvantages of the prior art and to provide an optical system.

The optical system comprises N first lighting components and M second lighting components, wherein N is greater than or equal to 3, M is greater than or equal to 5, the N first lighting components are arranged around an equiangular central array of a lighting central axis, the M second lighting components are arranged around an equiangular central array of a lighting central axis, the N first lighting components and the M second lighting components are respectively and independently controlled, the light emitting surfaces of the N first lighting components are located on the same plane, the light emitting surfaces of the M second lighting components are located on the same plane, the N first lighting components are used for forming rectangular light spots, and the M second lighting components are used for forming round light spots and/or oval light spots.

According to the utility model, the rectangular light spots meet the lighting requirements of dental operation through the first lighting assembly, the second lighting assembly is used for forming the round light spots and/or the oval light spots to meet the lighting requirements of surgery, and the first lighting assembly and the second lighting assembly are independently controlled to meet the rapid switching between the round light spots and the rectangular light spots according to different requirements, so that multiple purposes of one lamp are realized, and the use cost is reduced.

In one embodiment, the first lighting assembly and the second lighting assembly are arranged at equal angular intervals around the lighting axis, and the light emitting surfaces of the first lighting assembly and the second lighting assembly are located on the same plane.

In one embodiment, the M second illumination assemblies encircle the N first illumination assemblies, and are arranged in two concentric center arrays with the illumination central axis as the center, and the spot centers of the M second illumination assemblies and the N first illumination assemblies on the 700mm illumination surface are coincident.

In one embodiment, the second illumination assembly forms a circular light spot, and any two or more second illumination assemblies have the same light spot size and partially overlap to form the elliptical light spot.

In one embodiment, the first lighting assembly and the second lighting assembly each comprise an LED light source and a first lens, the first lens is disposed on the light emitting side of the LED light source, and the first lens emits the light emitted by the LED light source into light with a circular light spot; and a second lens is further arranged on the first lens of the first lighting component, and light emitted by the LED light source is emitted to be light with rectangular light spots after the first lens and the second lens are overlapped.

In one embodiment, the first lens is a free-form surface total internal reflection lens or a reflective cup. Preferably a free-form surface total internal reflection lens, i.e. a TIR condenser lens.

In one embodiment, the first lens includes a first incident surface and a first exit surface, a side surface adjacent to the first incident surface and the first exit surface is a total reflection surface, a middle part of the first exit surface is a convex lens surface, the first exit surface is an exit plane except the convex lens surface, and a height of the convex lens surface is lower than a height of the exit plane.

In one embodiment, the second lens of the first lighting assembly is removably mounted on the first lens.

In one embodiment, the second lens includes a second incident surface and a second exit surface, the second incident surface is a plane, the second exit surface is formed by a plurality of light emitting units in rectangular arrays, each light emitting unit is in a rectangular curved surface, each light emitting unit is formed by transition from a first arc line on one side of the rectangular curved surface to a second arc line and transition from the second arc line to a first arc line on the other side of the rectangular curved surface, and the height of the first arc line is lower than that of the second arc line.

In one embodiment, the second lens is provided with a limiting part on the periphery of the second incident surface, and the limiting part and the second incident surface enclose a containing groove.

In one embodiment, the limiting portion is provided with at least one positioning groove, the edge of the first emergent surface of the first lens is correspondingly provided with at least one positioning block, the first emergent surface of the first lens is arranged in the accommodating groove, and the positioning block is clamped in the positioning groove.

According to the utility model, the combination positioning and mounting of the second lens and the first lens can be realized rapidly by arranging the accommodating groove, the positioning block and the positioning groove combination, and compared with the method of adding an additional fixing bracket or other auxiliary fixing modes, the method is more rapid and convenient.

In one embodiment, the material of the first lens and the second lens is one of optical glass, PC resin or acryl. Preferably an optical glass, more preferably polymethyl methacrylate.

The utility model provides a lighting device, which comprises any one of the optical systems, a lamp body, a rear cover and a front cover, wherein the rear cover and the front cover are arranged on the lamp body, the first lighting component and the second lighting component are arranged on the lamp body, and the rear cover and the front cover are respectively covered on a radiating end and a light emitting end of the first lighting component and the second lighting component.

The optical system has the beneficial effects that: the first lighting assembly and the second lighting assembly are controlled independently, and according to different requirements, the quick switching between the circular light spot and the rectangular light spot is achieved, multiple purposes of one lamp are achieved, and the use cost is reduced.

Drawings

FIG. 1 is a schematic diagram of an optical system according to a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second illumination assembly in the optical system of the present utility model shown in FIG. 1;

FIG. 3 is a schematic view of a first illumination assembly in the optical system of the present utility model shown in FIG. 1;

FIG. 4 is a schematic diagram of an exploded structure of the optical system of the present utility model of FIG. 3;

FIG. 5 is a cross-sectional view of the optical system of the present utility model of FIG. 3;

FIG. 6 is an enlarged partial cross-sectional view of the optical system of the present utility model of FIG. 4;

FIG. 7 is a schematic view of a portion of the optical system of FIG. 4;

FIG. 8 is a schematic diagram of a second embodiment of an optical system according to the present utility model;

FIG. 9 is a schematic diagram of a third embodiment of an optical system according to the present utility model;

FIG. 10 is a schematic diagram of an embodiment of a lighting device according to the present utility model;

FIG. 11 is a schematic view of another angle structure of an embodiment of the lighting device of the present utility model;

FIG. 12 is a cross-sectional view of the illumination device of the present utility model of FIG. 10;

FIG. 13 is a graph of circular spot effect for an optical system of the present utility model;

fig. 14 is a rectangular spot effect diagram of the optical system of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The utility model discloses an optical system, which comprises N first lighting assemblies and M second lighting assemblies, wherein N is greater than or equal to 3, M is greater than or equal to 5, the N first lighting assemblies are arranged around an equiangular central array of a lighting central axis, the M second lighting assemblies are arranged around an equiangular central array of a lighting central axis, the N first lighting assemblies and the M second lighting assemblies are respectively and independently controlled, the light emitting surfaces of the N first lighting assemblies are positioned on the same plane, the light emitting surfaces of the M second lighting assemblies are positioned on the same plane, the N first lighting assemblies are used for forming rectangular light spots, and the M second lighting assemblies are used for forming round light spots and/or elliptical light spots.

According to the utility model, the rectangular light spots meet the lighting requirements of dental operation through the first lighting assembly, the second lighting assembly is used for forming the round light spots and/or the oval light spots to meet the lighting requirements of surgery, and the first lighting assembly and the second lighting assembly are independently controlled to meet the rapid switching between the round light spots and the rectangular light spots according to different requirements, so that multiple purposes of one lamp are realized, and the use cost is reduced.

Example 1

Referring to fig. 1, the present utility model provides an optical system for a medical illumination device, the optical system includes 3 first illumination assemblies 100 and 6 second illumination assemblies 200,3, the first illumination assemblies 100 are arranged in a 120 ° central array around an illumination central axis, the 6 second illumination assemblies 200 are arranged in a 60 ° central array around an illumination central axis, the 3 first illumination assemblies 100 and the 6 second illumination assemblies 200 individually control brightness and turn on and off, the light exit surfaces of the 3 first illumination assemblies 100 are located on the same plane, the light exit surfaces of the 6 second illumination assemblies 200 are located on the same plane, the 3 first illumination assemblies 100 are used for forming rectangular light spots, and the 6 second illumination assemblies 200 are used for forming circular light spots.

More specifically, taking a combination of 3 first illumination assemblies 100 and 6 second illumination assemblies 200 as an example, 6 second illumination assemblies 200 are arranged in a center array of two concentric circles around the illumination axis around 2 first illumination assemblies 100, and the spot centers of 6 second illumination assemblies 200 and 3 first illumination assemblies 100 coincide on a 700mm illuminated surface.

More specifically, referring to fig. 2 and 3, each of the first and second illumination assemblies 100 and 200 includes an LED light source and a first lens 2, the first lens 2 being disposed at a light emitting side of the LED light source, the first lens 2 emitting light emitted from the LED light source as light of a circular spot; the first lens 2 of the first lighting assembly 100 is further provided with a second lens 3, and after the first lens 2 and the second lens 3 are overlapped, the light emitted by the LED light source is emitted to be light with a rectangular light spot. It will be appreciated that the first lens 2 and the second lens 3 may be integrally formed.

More specifically, referring to fig. 2, the first lens 2 is a free-form surface total internal reflection lens or a reflective cup. Preferably a free-form surface total internal reflection lens, i.e. a TIR condenser lens.

More specifically, referring to fig. 3 and 4, the second lens 3 is detachably mounted on the first lens 2, and the first lens 2 and the second lens 3 are coaxially mounted. The material of the first lens 2 and the second lens 3 is one of optical glass, PC resin, and acryl, preferably optical glass, and more preferably polymethyl methacrylate.

More specifically, referring to fig. 3 to 5, the first lens 2 includes a first incident surface 21 and a first exit surface 22, a side surface adjacent to the first incident surface 21 and the first exit surface 22 is a total reflection surface 23, a middle portion of the first exit surface 22 is a convex lens surface 221, the first exit surface 22 is an exit plane except the convex lens surface 221, and a height of the convex lens surface 221 is lower than a height of the exit plane.

More specifically, referring to fig. 3 to 6, the second lens 3 includes a second incident surface 31 and a second exit surface 32, the second incident surface 31 is a plane, the second exit surface 32 includes a plurality of light emitting units 321 in a rectangular array, each light emitting unit 321 is a rectangular curved surface, each light emitting unit 321 is formed by transiting from a first arc a on one side of the rectangular curved surface to a second arc B, and then transiting from the second arc B to a first arc a on the other side of the rectangular curved surface, and the height of the first arc a is lower than that of the second arc B. The second exit surface 32 is configured by a plurality of rectangular curved light emitting units 321 in a rectangular array, and although the whole second lens 3 is circular, when the second lens 3 and the first lens 2 are coaxially stacked, the light emitting units 321 in a plurality of rectangular curved shapes are used to adjust the direction of the light, so that a rectangular light spot with uniform illuminance can be formed.

More specifically, referring to fig. 4 and 7, the second lens 3 has a limiting portion 33 on the periphery of the second incident surface 31, and the limiting portion 33 and the second incident surface 31 enclose a receiving groove 34.

More specifically, referring to fig. 3 to 7, two positioning grooves 35 are provided on the limiting portion 33, two positioning blocks 24 are correspondingly provided on the edge of the first exit surface 22 of the first lens 2, the first exit surface 22 of the first lens 2 is disposed in the receiving groove 34, and the positioning blocks 24 are clamped in the positioning grooves 35.

Example two

Referring to fig. 8, the present utility model provides an optical system, which has a structure substantially the same as that of the first embodiment, and is different from the first embodiment in that, for example, a combination of 3 first illumination assemblies 100 and 9 second illumination assemblies 200 is taken as an example, wherein one first illumination assembly 100 and three second illumination assemblies 200 are arranged at equal angular intervals around an illumination axis, and the light exit surfaces of the first illumination assembly 100 and the second illumination assemblies 200 are located on the same plane.

Example III

Referring to fig. 9, the present utility model provides an optical system having a structure substantially the same as that of the first embodiment, except that a combination of 3 first illumination assemblies 100 and 18 second illumination assemblies 200 is taken as an example, wherein 6 second illumination assemblies 200 and 3 first illumination assemblies 100 are equiangularly spaced around the illumination axis, i.e. two second illumination assemblies 200 are disposed between two adjacent first illumination assemblies 100, which is regarded as a first central array. The remaining 12 second lighting assemblies 200 are arranged around the central array of central axis of illumination, considered as a second central array, which is two concentric circles centered on the central axis of illumination, the second central array surrounding the first central array. The spot centers of the 15 second illumination assemblies 200 and the 3 first illumination assemblies 100 on the 700mm illuminated surface coincide.

Example IV

The present utility model provides an optical system, which has a structure substantially the same as that of the first embodiment, and is different in that the second illumination assembly 200 forms a circular light spot, and any two or more second illumination assemblies 200 have the same light spot size and partially overlap to form an elliptical light spot.

Example five

Referring to fig. 9 to 12, the present utility model provides a lighting device, which includes a light source assembly, the light source assembly includes any one of the optical systems, a lamp body 300, a back cover 400 and a front cover 500 mounted on the lamp body 300, the first lighting assembly 100 and the second lighting assembly 200 are mounted on the lamp body 300, and the back cover 400 and the front cover 500 are respectively covered on the radiating end and the light emitting end of the first lighting assembly 100 and the second lighting assembly 200. The lighting device is mainly suitable for medical illumination and is mainly applied to surgical or dental lamps. It will be appreciated that the heat dissipation plates of the lamp body 300 are each designed to have a certain inclination angle, so that the light emitted from the first and second illumination assemblies 100 and 200 can be irradiated on the spot center of the illumination axis. Other structures on the lighting device are common in the prior art, and are not described herein.

It can be understood that the plurality of first lighting assemblies 100 and the plurality of second lighting assemblies 200 disposed on the heat dissipation plate of the lamp body 300 can be turned on to illuminate different numbers of the first lighting assemblies 100 or the second lighting assemblies 200 according to different illumination intensity requirements; different numbers of first and second lighting assemblies 100, 200 may also be disassembled or assembled to meet different lighting requirements.

Referring to fig. 13 and 14, for a comparison of two spot shapes according to the present utility model, a circular spot as shown in fig. 13 can be realized by a plurality of second illumination assemblies 200, and a rectangular spot as shown in fig. 14 can be realized by a plurality of first illumination assemblies 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The optical system is characterized by comprising N first lighting components and M second lighting components, wherein N is greater than or equal to 3, M is greater than or equal to 5, the N first lighting components are arranged around an equiangular central array of a lighting central axis, the M second lighting components are arranged around an equiangular central array of a lighting central axis, the N first lighting components and the M second lighting components are respectively and independently controlled, the light emitting surfaces of the N first lighting components are located on the same plane, the light emitting surfaces of the M second lighting components are located on the same plane, the N first lighting components are used for forming rectangular light spots, and the M second lighting components are used for forming round light spots and/or elliptical light spots.

2. An optical system according to claim 1, characterized in that: the first lighting assembly and the second lighting assembly are arranged at equal angle intervals around the lighting central axis, and the light emitting surfaces of the first lighting assembly and the second lighting assembly are positioned on the same plane.

3. An optical system according to claim 1, characterized in that: the M second illumination assemblies encircle the N first illumination assemblies, two concentric circle center arrays are arranged by taking the illumination central axis as the center, and the spot centers of the M second illumination assemblies and the N first illumination assemblies on the 700mm illumination surface are overlapped.

4. An optical system according to claim 1, characterized in that: the second illumination components form circular light spots, and the elliptical light spots can be formed after the light spots of any two or more second illumination components are identical in size and partially overlapped.

5. An optical system according to claim 1, characterized in that: the first lighting assembly and the second lighting assembly comprise an LED light source and a first lens, the first lens is arranged on the light emitting side of the LED light source, and the first lens emits light emitted by the LED light source into light with a circular light spot; and a second lens is further arranged on the first lens of the first lighting component, and light emitted by the LED light source is emitted to be light with rectangular light spots after the first lens and the second lens are overlapped.

6. The optical system of claim 5, wherein: the first lens is a total internal reflection lens or a reflection cup with a free-form surface.

7. The optical system of claim 5, wherein: the second lens of the first lighting assembly is detachably mounted on the first lens.

8. The optical system of claim 5, wherein: the second lens comprises a second incident surface and a second emergent surface, the second incident surface is a plane, the second emergent surface is composed of a plurality of light emitting units which are in rectangular arrays, each light emitting unit is in a rectangular curved surface, each light emitting unit is formed by the transition from a first arc line on one side of the rectangular curved surface to a second arc line and then from the second arc line to a first arc line on the other side of the rectangular curved surface, and the height of the first arc line is lower than that of the second arc line.

9. The optical system of claim 5, wherein: the first lens and the second lens are made of one of optical glass, PC resin or acrylic.

10. A lighting device, characterized by: the optical system of any one of claims 1-9, further comprising a lamp body, a back cover and a front cover mounted on the lamp body, the first and second lighting assemblies mounted on the lamp body, the back cover and the front cover respectively covering the heat dissipation end and the light extraction end of the first and second lighting assemblies.