CN208547765U - Lighting apparatus and endoscope with the lighting apparatus - Google Patents
Lighting apparatus and endoscope with the lighting apparatus Download PDFInfo
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- CN208547765U CN208547765U CN201820926140.5U CN201820926140U CN208547765U CN 208547765 U CN208547765 U CN 208547765U CN 201820926140 U CN201820926140 U CN 201820926140U CN 208547765 U CN208547765 U CN 208547765U
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- light source
- light
- dichroscope
- lighting apparatus
- lens
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
A kind of lighting apparatus and the endoscope with the lighting apparatus, the lighting apparatus includes light source assembly, the light source assembly includes first light source, diffusion sheet and dichroscope, the diffusion sheet is set between the first light source and the dichroscope, and the diffusion sheet is used to spread the light of the first light source.The lighting apparatus can make fluorophor be highlighted light source activation, generate the long wavelength light of high-energy density, then improve the brightness of white-light illuminating equipment.
Description
Technical field
The utility model relates to medical instruments field, especially a kind of lighting apparatus and with being peeped in the lighting apparatus
Mirror.
Background technique
With the development of science and technology, endoscope as a kind of minimally invasive inspection method be widely used in human body diseases monitoring,
In the interior observation of industrial seal chamber and the multiple fields such as distant surveillance and manipulation, lighting apparatus is the important group of one kind of endoscope
At part.In the prior art, lighting apparatus generally uses halogen lamp, xenon lamp or high-power LED as light source.However halogen
Generate heat when lamp and xenon lamp are as light source serious so that need addition heat insulating element between light source and endoscope, photoelectric conversion efficiency compared with
It is low, and it is unfavorable for the miniaturization of equipment.High-power LED frequently with array white light LEDs, at this time by etendue
(Etendue) limitation, similar tapered light stick etc. have the coupling device of convergent effect for fiber optic conduction and can not illuminate, thus
Cause the coupling efficiency of optical fiber low, so that the utilization efficiency to light source is low.
In order to improve the utilization rate of light source, the technology of laser remote excitation fluorescent powder can be used to realize white light.So
And according to the principle of phosphor excitation, if the exciting light for being incident on fluorophor is unevenly distributed, it is easy to cause fluorophor one
There is saturated phenomenon on a little positions, and be in undersaturation in other positions, if continuing to increase excitating light strength, is easy to lead
It causes the fluorescent powder of saturation position to be quenched, to avoid fluorescent powder from being quenched, only reduces the intensity of light source, this can undoubtedly reduce illumination
The brightness of equipment, then reduces the quality of entire endoscopic imaging, to be unfavorable for the use in endoscope.
Utility model content
The purpose of this utility model is to provide a kind of lighting apparatus and with the endoscope of the lighting apparatus, which is set
It is standby fluorophor to be made to be highlighted light source activation, the long wavelength light of high-energy density is generated, white-light illuminating equipment is then improved
Brightness.
The utility model provides a kind of lighting apparatus, including light source assembly, and the light source assembly includes first light source, diffusion
Piece and dichroscope, the diffusion sheet are set between the first light source and the dichroscope, and the diffusion sheet is for expanding
Dissipate the light of the first light source.
Further, the half-peak breadth of the diffusion sheet angle of scattering is 2-5 °, and the light of the first light source passes through the expansion
Scattering light after discrete piece has flat-top distribution.
Further, the light source assembly further includes the first collimation lens, the second collimation lens, fluorescence disk and reflection diffusion
Disk, the dichroscope are placed relative to the inclined light shaft of the first light source, and the fluorescence disk and the first light source are located at
The same side of the dichroscope, first collimation lens be set to the fluorescence disk and the dichroscope optical path it
Between, the reflection diffusion disc is located at the two sides of the dichroscope with the first light source, and second collimation lens is set
It is placed between the dichroscope and the optical path of the reflection diffusion disc.
Further, the dichroscope and the optical axis of the first light source are in -45 ° of angles, first collimation lens
Primary optical axis and the optical axis of the first light source be mutually perpendicular to, the primary optical axis of second collimation lens and the first light source
Optical axis is located along the same line.
Further, first collimation lens and/or second collimation lens are convex lens.
Further, first collimation lens and/or the second collimation lens are the lens that section is cup type, at described section
Face is that form the oriented section be the saturating of cup type towards one end of the fluorescence disk or the reflection diffusion disc for the lens of cup type
The cylindrical recessed portion of mirror inner recess, in the bottom of the cylinder recess, towards the fluorescence disk or the reflection
Side protrusion where diffusion disc is formed with an arcwall face.
Further, the setting of the dichroscope, so that the light beam of a part of first light source occurs on dichroscope
Reflection, and make the light beam of first light source described in another part through the dichroscope, occur on the dichroscope anti-
The light beam penetrated passes through described second by fluorescence disk described in the first collimation lens directive, through the light beam of the dichroscope
Diffusion disc is reflected described in collimation lens directive.
Further, the transmissivity for the light beam that the dichroscope projects the first light source is 10%-40%.
Further, the light source assembly includes reflecting mirror and fluorescence disk, and the dichroscope is relative to first light
The inclined light shaft in source is placed, and the fluorescence disk and the reflecting mirror are set to the dichroscope relative to the first light source
The other side offers aperture on the dichroscope, and the cooperation of the reflecting mirror and the fluorescence disk is so that pass through the aperture
Light by the reflecting mirror reflected illumination to the fluorescence disk on, and on the fluorescence disk occur wavelength convert after again
Dichroscope described in secondary directive.
Further, the reflecting mirror includes the first plane mirror and the second plane mirror, the dichroscope, described first flat
Face mirror, second plane mirror and the fluorescence disk are set in sequence along optical path, the folder of the dichroscope and the first light source
Angle is 45 °, and first plane mirror is set to the lower section of the dichroscope, first plane mirror and second plane mirror
At right angles to lay, the optical axis of the light projected by the fluorescence disk wavelength convert passes through the aperture of the dichroscope, and
It is mutually perpendicular to the optical axis of the first light source.
Further, the reflecting mirror is right-angle prism, the dichroscope, the right-angle prism and fluorescence disk edge
Optical path is set in sequence, and the dichroscope is since the angle of the first light source is 45 °, by the fluorescence disk wavelength convert
The optical axis of the light of injection passes through the aperture of the dichroscope, and vertical with the optical axis of the first light source.
Further, the first light source is blue laser light source.
Further, the diffusion sheet includes the first diffusion sheet and the second diffusion sheet, and the light source assembly further includes second
Light source and fluorescence disk, first diffusion sheet are set between the first light source and the dichroscope, the dichroscope
Inclined light shaft relative to the first light source is placed, and the second light source, second diffusion sheet and the fluorescence disk are along institute
The optical path for stating second light source is set in sequence, and second diffusion sheet is set between the second light source and the fluorescence disk, institute
The cooperation of second light source, the fluorescence disk and the dichroscope is stated, so that the light projected after fluorescence disk conversion
The optical axis of line and the optical axis of the first light source are mutually perpendicular to.
Further, first diffusion sheet, second diffusion sheet and the fluorescence disk three scattering property and position
Cooperation so that the hot spot that the light of the second light source is formed described two on mirror, exists with the light of the first light source
The size of described two hot spots formed on mirror is adapted.
Further, the first light source is blue laser light source or LED light source, and the second light source is blue light, purple light
Or ultraviolet laser light source.
Further, the fluorescence disk be circular disk, the light emitting region including multiple circumferential arrays along circular disk,
Red fluorescence powder, green emitting phosphor and/or yellow fluorescent powder are coated in the light emitting region.
Further, red green fluorescence powder or reddish yellow fluorescent powder are coated on the fluorescence disk.
Further, radiating bottom plate is additionally provided on the fluorescence disk.
Further, the lighting apparatus includes Lens Coupling component, the light source assembly and the Lens Coupling component
Sequential, the light that the light source assembly issues enter in the Lens Coupling component, and the Lens Coupling component includes the
One convergent lens, optical tunnel and conduction optical fiber, first convergent lens, the optical tunnel and the conduction optical fiber are sequentially set
It sets.
Further, the etendue of the light beam projected from the light source assembly is less than or equal to the conduction optical fiber
Etendue.
Further, the optical tunnel is tapered, from one end far from the conduction optical fiber to close to the conduction optical fiber
One end, the diameter of the optical tunnel constantly reduces, the optical tunnel close to one end of the conduction optical fiber diameter with it is described
The diameter for conducting the end face of optical fiber is identical.
Further, the Lens Coupling component further includes the second convergent lens, first convergent lens, described second
Convergent lens, the optical tunnel and the conduction optical fiber are set in sequence along the direction of transfer of light, and the optical tunnel is cylinder,
The section of the optical tunnel is the circle to match with the cross sectional shape with the conduction optical fiber.
Further, the focused light spot and divergence half-angle point formed in the optical tunnel far from one end of the conduction optical fiber
It little Yu Huodengyu not the face area of the conduction optical fiber and the collection angle of the conduction optical fiber.
The utility model additionally provides a kind of endoscope, including above-mentioned lighting apparatus.
Further, the endoscope further includes cmos sensor.
In conclusion setting of the utility model by diffusion sheet, the homogenizer that first light source can be projected disperses,
Fluorescence disk is uniformly excited, fluorescence disk will not generate supersaturation, and can reach in excitation best bright
Degree, further, by the setting of the first convergent lens and optical tunnel, can guide-lighting efficiency with higher, reduce light energy
Loss, and the miniaturization of lighting apparatus is facilitated, so that above-mentioned lighting apparatus can use on endoscope.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be more clearly understood with advantage, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the light source assembly for the lighting apparatus that the utility model first embodiment provides.
Fig. 2 is the structural schematic diagram of fluorescence disk in Fig. 1.
Fig. 3 is the structural schematic diagram of the Lens Coupling component for the lighting apparatus that the utility model first embodiment provides.
Fig. 4 is the signal that first light source is distributed through the scattered light intensity after diffusion sheet in the utility model first embodiment
Figure.
Fig. 5 is the structural schematic diagram of fluorescence disk and the first convergent lens in the utility model second embodiment.
Fig. 6 is the structural schematic diagram of light source assembly in the utility model 3rd embodiment.
Fig. 7 is the structural schematic diagram of Lens Coupling component in the utility model 3rd embodiment.
Fig. 8 is the structural schematic diagram of light source assembly in the utility model fourth embodiment.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below in conjunction with attached drawing and preferred embodiment, the utility model is described in detail as follows.
The purpose of this utility model is to provide a kind of lighting apparatus and with the endoscope of the lighting apparatus, which is set
It is standby fluorophor to be made to be highlighted light source activation, the long wavelength light of high-energy density is generated, white-light illuminating equipment is then improved
Brightness, and the miniaturization of lighting apparatus is facilitated, so that above-mentioned lighting apparatus can use on endoscope.
Fig. 1 is the structural schematic diagram of the light source assembly for the lighting apparatus that the utility model first embodiment provides, and Fig. 2 is figure
The structural schematic diagram of fluorescence disk in 1, Fig. 3 are the Lens Coupling component for the lighting apparatus that the utility model first embodiment provides
Structural schematic diagram.As shown in Figure 1 to Figure 3, lighting apparatus provided by the utility model includes light source assembly 10 and Lens Coupling group
Part 20, light source assembly 10 and Lens Coupling component 20 are set gradually, and the light that light source assembly 10 issues passes through Lens Coupling component
Enter in conduction optical fiber after 20.
As shown in Figure 1, the light source assembly 10 that the utility model first embodiment provides includes first light source 111, diffusion sheet
12, dichroscope 13, the first collimation lens 141, fluorescence disk 15, the second collimation lens 142 and reflection diffusion disc 16, diffusion sheet 12
It is set between first light source 111 and the optical path of dichroscope 13, inclined light shaft of the dichroscope 13 relative to first light source 111
It places, preferably -45 ° (being positive in a counterclockwise direction) slant settings.Fluorescence disk 15 and first light source 111 are located at dichroscope 13
The same side, the first collimation lens 141 is set between fluorescence disk 15 and the optical path of dichroscope 13, the first collimation lens 141
Primary optical axis and the optical axis of first light source 111 be mutually perpendicular to.Reflection diffusion disc 16 and first light source 111 are located at dichroscope
13 two sides, the second collimation lens 142 are set between reflection diffusion disc 16 and the optical path of dichroscope 13, the second collimation lens
142 primary optical axis and the optical axis of first light source 111 are located along the same line.
In the present embodiment, first light source 111 is semiconductor laser transmitter, the preferably blue laser of 450nm.The
The light that one light source 111 issues reaches on dichroscope 13 after diffusion sheet 12.
In the present embodiment, the laser that the setting of diffusion sheet 12 can make first light source 111 project is within a certain angle
Realize effective diffusion, when the laser beam that first light source 111 projects is irradiated on dichroscope 13 by diffusion sheet 12, laser
Certain diffusion can occur for light beam.Preferably, half-peak breadth FWHM (the full width at half of 12 angle of scattering of diffusion sheet
It maximum) is 2-5 °, optimal is 2-3 °；It can be the frosted glass plate by processing, or diffraction element DOF
(diffraction optical element), such as holographic grating, phase grating, so that the scattering after diffusion sheet 12
There is light flat-top (flat-top) to be distributed (as shown in Figure 4), and the form of atypical Lambertian reflector, enable light intensity one
Determine to be uniformly distributed in angle.
Dichroscope 13 is long wave by dichroscope, and the reflectivity by adjusting dichroscope 13, so that a part of
Laser beam reflects on dichroscope 13, by 141 directive fluorescence disk 15 of the first collimation lens, and makes another part laser
Beam penetrates dichroscope 13, by 142 directive of the second collimation lens reflection diffusion disc 16.
The laser beam reflected through dichroscope 13 is irradiated on fluorescence disk 15 after passing through the first collimation lens 141, in fluorescence
Wavelength convert occurs on disk 15, is converted into longer wavelengths of light, the longer wavelengths of light after this is converted again passes by
Dichroscope 13 can be passed through after collimating lens 141, reach the other side of dichroscope 13.Fluorescence disk is irradiated in laser beam
When on 15, due to the setting of above-mentioned diffusion sheet 12, laser beam can be more evenly radiated on fluorescence disk 15, therefore fluorescence disk
15, without being quenched, can be generated the long wavelength light of higher energy density, then be mentioned by more high-luminance light source excitation
The brightness of high white-light illuminating equipment.
It is reached after the second collimation lens 142 on reflection diffusion disc 16 through the laser beam of dichroscope 13, by anti-
Light after penetrating again passes by and reaches dichroscope 13 after the second collimation lens 142, and upper after the reflection of dichroscope 13
The long wave light stated through dichroscope 13 synthesizes in satisfactory visible light injection Lens Coupling component 20.
In the present embodiment, the first collimation lens 141 and the second collimation lens 142 all can be convex lenses.
In this embodiment, it is preferred that the light beam that dichroscope 13 projects first light source 111, preferably 450nm is blue
The transmissivity of color laser is 10%-40%, so that the long wavelength light converted by fluorescence disk 15 and anti-by reflection diffusion disc 16
The ratio between energy of short-wavelength light penetrated is in a suitable range.
Further, reflection diffusion disc 16 and the scattering property having the same of fluorescence disk 15, it is preferable that reflection diffusion disc 16
And fluorescence disk 15 is scatteringangleθ1/2=60 ° of diffuse reflector.
As shown in Fig. 2, in the present embodiment, fluorescence disk 15 can be circular disk, there are multiple weeks along circular disk
To the light emitting region of arrangement 151, each light emitting region 151 can be coated with red, green, yellow or simple scattered reflection
Mirror passes through time division multiplexing, adjustable each ingredient ratio of spectrum, to obtain that the white of different-colour is presented when rotating fluorescence disk 15
Color, even blue ray, to expand use scope.
It is to be appreciated that fluorescence disk 15 can also be fixed, at this point, can coat red green fluorescence powder on fluorescence disk 15.
In other embodiments, fluorescence disk 15 is fixed, and reddish yellow fluorescent powder can be coated on fluorescence disk 15, at this point, yellow
Fluorescence material is mixed with red fluorescence material, or is not mixed and formed two layers.In specifically used, it can will mix
Reddish yellow fluorescent material forms uniform one layer after mixing with transparent inorganic material (such as silica, titanium oxide) afterwards, then high temperature
Lower calcining forms inorganic fluorescent layer.
Further, radiating bottom plate 17 is additionally provided on fluorescence disk 15, fluorescence disk 15 is fixed on radiating bottom plate 17, excellent
Selection of land, radiating bottom plate 17 are aluminum cooling body, liquid chiller, peltier-element or heat pipe etc..
As shown in figure 3, in the present embodiment, Lens Coupling component 20 includes the first convergent lens 211, the second convergent lens
212, optical tunnel 22 and conduction optical fiber 23, the first convergent lens 211, the second convergent lens 212, optical tunnel 22 and conduction optical fiber 23
Setting, and the first convergent lens 211, the second convergent lens 212, optical tunnel 22 and conduction are arranged successively along the direction of transfer of light
The axis of optical fiber 23 is located along the same line.
The light more dissipated projected from light source assembly 10, changes by the first convergent lens 211 and the second convergent lens 212
, can be by spot projection on the end face of optical tunnel 22 behind darkening road, optical tunnel 22 is by unevenness that may be present at focused light spot
Even light is homogenized, so that the energy for the light that each optical fiber monofilament is collected in conduction optical fiber 23 is close, improves outgoing beam
Horizontal homogeneity.
As shown in figure 3, α is the angle of divergence of the outgoing beam projected from light source assembly 10, θ is by the first convergent lens
211 and the second divergence half-angle after convergent lens 212.The etendue of the outgoing beam projected from light source assembly 10
(Etendue) it is π S (NA)2, wherein S is effective irradiated area of fluorescent powder, NA=sin α；The etendue of optical fiber
(Etendue) it is π A (NA)2, wherein A is the sectional area of optical fiber, NA=sin θ.Preferably, it is penetrated from what light source assembly 10 projected
The etendue of light beam is less than or equal to the etendue of conduction optical fiber 23 out, to reduce the loss of light.
Further, the outgoing beam projected from light source assembly 10 passes through the first convergent lens 211 and the second convergent lens
Focused light spot and divergence half-angle of the optical tunnel 22 far from conduction 23 one end of optical fiber are reached after 212 is respectively less than or equal to conduction optical fiber
23 face area and the collection angle for conducting optical fiber 23, to improve the transverse energy distribution for converging to light beam on fiber end face.
In the present embodiment, the section of optical tunnel 22 is the circle to match with the cross sectional shape of conduction optical fiber 23, even light
Stick 22 can be solid cylindric glass bar, preferably quartz pushrod or same or similar with the refractive index of conduction light material
Material.Further, when optical tunnel 22 is quartz pushrod, high-reflecting film is also wrapped on outside optical tunnel 22, in actual use,
Optical tunnel 22 can be set in hollow tube, and high-reflecting film is attached on the inner wall of hollow tube.
Further, in the present embodiment, it is additionally provided in optical tunnel 22 close to the end of 212 one end of the second convergent lens
Windowpane 24 is protected, due to using only cold light source in light source assembly 10, without infrared ingredient, which can be
Common optical glass window, such as K9 or quartz can be improved light compared with traditional heat shield by reducing ir transmissivity
Transmitance.
In the present embodiment, by the setting of diffusion sheet 12, the homogenizer that first light source 111 projects can be dispersed,
Fluorescence disk 15 is excited by the light source of more high brightness, without being quenched, higher energy density can be generated
Long wavelength light then improves the brightness of white-light illuminating equipment,；It further, can by the limitation to 13 transmissivity of dichroscope
To control the outgoing beam of first light source 111 on dichroscope 13, the energy ratio of transmitted light beam and the reflected beams is conducive to mention
The quality of high light line；Further, pass through the setting of the first convergent lens 211, the second convergent lens 212 and optical tunnel 22, energy
Enough guide-lighting efficiency with higher, reduces the loss of light energy.
Fig. 5 is the structural schematic diagram of fluorescence disk and the first convergent lens in the utility model second embodiment, such as Fig. 5 institute
Show, the lighting apparatus that the utility model second embodiment provides and the lighting apparatus that first embodiment provides are essentially identical, no
It is with place, in the present embodiment, the first collimation lens 141 is the lens that section is cup type, in 141 court of the first collimation lens
It is formed with a cylindrical recessed portion 1411 to 141 inner recess of the first collimation lens to one end of fluorescence disk 15, in cylinder
The bottom of shape recess is formed with an arc surface towards 15 side of fluorescence disk protrusion.The axis of first collimation lens 141 and
The axis of cylinder recess 1411 is respectively positioned on the optical axis after dichroscope 13 reflects.As shown in the optical path of Fig. 5, process two to
The light beam that Look mirror 13 emits can be with after the optical path change of the wavelength convert of fluorescence disk 15 and the first collimation lens 141
The state of directional light is projected from the first collimation lens 141, and the first collimation lens 141 can be optical plastic, such as PMMA
(polymethyl methacrylate polymethyl methacrylate).
It is to be appreciated that the form of above-mentioned convergent lens also can be applied on the second convergent lens 212.
Fig. 6 is the structural schematic diagram of light source assembly in the utility model 3rd embodiment, and Fig. 7 is that the utility model third is real
Apply the structural schematic diagram of Lens Coupling component in example.As shown in Figure 6 to 7, the light source that the utility model 3rd embodiment provides
Component 10 includes first light source 111, diffusion sheet 12, dichroscope 13, reflecting mirror 18 and fluorescence disk 15, and diffusion sheet 12 is set to the
Between one light source 111 and the optical path of dichroscope 13.Dichroscope 13 is placed relative to the inclined light shaft of first light source 111, excellent
It is selected as 45 ° of slant settings.Fluorescence disk 15 and reflecting mirror 18 are set to the other side of the dichroscope 13 relative to first light source 111.
Aperture (not shown go out) is offered on dichroscope 13, it is preferable that the diameter of aperture is 1-5mm.The aperture is located at the first light
On the optical axis in source 111, some light of first light source 111 is mapped to the other side of dichroscope 13 by aperture, and other parts
Light can be reflected by dichroscope 13.The cooperation of reflecting mirror 18 and fluorescence disk 15 makes the light across aperture by reflecting mirror
In 18 reflected illumination to fluorescence disk 15, and directive dichroscope 13 again after wavelength convert occurs on fluorescence disk 15.
In the present embodiment, due to the setting of diffusion sheet 12, when the light of first light source 111 is mapped on dichroscope 13
When, hot spot can be generated on dichroscope 13 because of scattering, at non-aperture, the light of first light source 111 can be via dichroic
Mirror 13 reflects, and dichroscope 13 can be then passed through through the light at small holes, and light after dichroscope 13 can be
It is mapped under the action of reflecting mirror 18 on fluorescence disk 15, the light projected again from fluorescence disk 15 by wavelength convert reaches two
Dichroscope 13 can be passed through when to Look mirror 13, then some light with 13 original reflection of dichroscope synthesizes the visible of needs
Light, the visible light after synthesis enter the coupling that Lens Coupling component 20 carries out light.
Further, in order to preferably carry out the synthesis of light, in the present embodiment, fluorescence disk 15 has certain dissipate
Penetrate performance, it is preferable that fluorescence disk 15 can make the angle of scattering for having ± 20 ° by the light of wavelength convert.
In the present embodiment, first light source 111 can be blue laser light source, be coated with red green fluorescence powder on fluorescence disk 15
Or reddish yellow fluorescent powder.Radiating bottom plate 17 is again provided on fluorescence disk 15.
In the present embodiment, reflecting mirror 18 includes the first plane mirror 181 and the second plane mirror 182, dichroscope 13, first
Plane mirror 181, the second plane mirror 182 and fluorescence disk 15 are set in sequence along optical path, and the first plane mirror 181 is set to dichroscope 13
Lower section, and with the optical axis of first light source 111 be in -45 ° (being positive in a counterclockwise direction).Second plane mirror 182 is set to first
Plane mirror 181 reflect after optical path on, and be in 45 ° of angles with the optical axis of first light source 111, that is, the first plane mirror 181 and the
The angle of two plane mirrors 182 is right angle, and the extending direction of the second plane mirror 182 is parallel with dichroscope 13, and fluorescence disk 15 is arranged
In optical path after the reflection of the second plane mirror 182, and with the optical axis of first light source 111 in -45 ° of angles namely fluorescence disk 15 with
First plane mirror 181 is parallel, and the optical axis of the light projected by 15 wavelength convert of fluorescence disk passes through the aperture of dichroscope 13,
And it is mutually perpendicular to the optical axis of first light source 111.
In order to synthesize the light of 13 two sides of dichroscope preferably, diffusion sheet 12, dichroscope 13, fluorescence
The cooperation of disk 15 and reflecting mirror 18 is so that via the hot spot and first light source 111 of 15 directive dichroscope 13 of fluorescence disk in dichroic
The size of the hot spot formed on mirror 13 is adapted.
It is to be appreciated that in the present embodiment, the first plane mirror 181 and the second plane mirror 182 can use right-angle prism generation
It replaces, to increase the integrated performance of whole device.
Compared to the first embodiment, the present embodiment can be made by the setting of aperture on diffusion sheet 12 and dichroscope 13
The light that first light source 111 issues, a part are reflected by dichroscope 13, and another part injects fluorescence after passing through dichroscope 13
On disk 15, then it is convenient for the synthesis of light, simplifies the structure of light source assembly 10, equally make optical path more simple, reduce
The loss of luminous energy.On the other hand, above-mentioned structure can be controlled by the control to 15 angle of scattering of diffusion sheet 12 and fluorescence disk
System is from the irradiant angle of divergence alpha of light source assembly 10, in order to the laying of subsequent lens coupling assembly 20.
As shown in fig. 7, in the present embodiment, Lens Coupling component 20 includes the first convergent lens 211, optical tunnel 22 and passes
Guiding fiber 23, the first convergent lens 211, optical tunnel 22 and conduction optical fiber 23 are arranged along the direction of transfer sequential of optical fiber, light
Line enters in optical tunnel 22 after the convergence of the first convergent lens 211.
The scheme of the first convergent lens 211 of setting and the second convergent lens 212 in compared to the first embodiment, only with one
The structure of first convergent lens 211 can obtain biggish focused light spot and lesser divergence half-angle θ2, this be able to maintain compared with
Good transverse illumination distribution, and reduce the cost of whole equipment.
In order to adapt to scheme only with a convergent lens, in the present embodiment, optical tunnel 22 is tapered, from far from biography
One end of guiding fiber 23 to one end close to conduction optical fiber 23, the diameter of optical tunnel 22 constantly reduces, and optical tunnel 22 is close to conduction
The diameter of one end of optical fiber 23 is identical as the conduction diameter of end face of optical fiber 23.In the material and first embodiment of the uniform light board 22
Material it is identical, details are not described herein.
Protection windowpane 24, protection are equally additionally provided with close to the end of 212 one end of the second convergent lens in optical tunnel 22
The material of windowpane 24 is identical as the material in first embodiment, and details are not described herein.
It should be noted that the light source assembly 10 in second embodiment can also be with the Lens Coupling group in first embodiment
Part 20 combines, and the Lens Coupling component 20 in second embodiment equally can be with 10 knot of light source assembly in first embodiment
It closes, the combination of two kinds of components in two embodiments can't be limited by others.
Fig. 8 is the structural schematic diagram of light source assembly in the utility model fourth embodiment, as shown in figure 8, the present embodiment mentions
The light source assembly 10 of confession includes first light source 111, the first diffusion sheet 121, second light source 112, the second diffusion sheet 122, fluorescence disk
15 and dichroscope 13.First diffusion sheet 121 is set between first light source 111 and dichroscope 13, and first light source 111 issues
Light reached on dichroscope 13 after diffusion sheet 121, reflected on dichroscope 13, dichroscope 13 relative to
The inclined light shaft of first light source 111 is placed, and preferably 45 °.Second light source 112, the second diffusion sheet 122 and fluorescence disk 15 are along second
The optical path of light source 112 is set in sequence, and the second diffusion sheet 122 is set between second light source 112 and fluorescence disk 15, second light source
112 light projected reach on fluorescence disk 15 after the second diffusion sheet 122, and the light projected from fluorescence disk 15 is from dichroic
After mirror 13 passes through dichroscope 13 relative to the other side of first light source 111, photosynthetic with first light source 111 can as what is needed
It is light-exposed, the cooperation of second light source 112, fluorescence disk 15 and dichroscope 13, so that irradiant after the conversion of fluorescence disk 15
Optical axis and the optical axis of first light source 111 are mutually perpendicular to.
In the present embodiment, first light source 111 can be blue laser light source or LED light source, and second light source 112 can be
The laser light sources such as blue light, purple light or ultraviolet light.
In the present embodiment, in order to preferably synthesizing light, it is preferable that the first diffusion sheet 121, second expands
The cooperation of discrete piece 122 and 15 three's scattering property of fluorescence disk and position makes the light of second light source 112 shape on dichroscope 13
At hot spot, the size of the hot spot formed on dichroscope 13 with the light of first light source 111 is adapted.Namely first diffusion
The angle of scattering of piece 121 is greater than the angle of scattering of the second diffusion sheet 122, and on this basis, the angle of scattering of the second diffusion sheet 122 is got over
Greatly, the diffusion sheet 12 of fluorescence disk 15 is just smaller, and the angle of scattering of the second diffusion sheet 122 is smaller, and the diffusion sheet 12 of fluorescence disk 15 is more
Greatly.
Scheme provided in this embodiment can be mentioned relatively easily by the setting of two light sources and two diffusion sheets 12
High light source assembly 10 projects the brightness of light, and can relatively easily to it is a certain it is photochromic be adjusted, to meet a variety of needs.
In conclusion the utility model passes through the setting of diffusion sheet 12, the homogenizer that first light source 111 can be projected
Dispersion, enables fluorescence disk 15 by more high-luminance light source excitation, without being quenched, can generate higher energy density
Long wavelength light then improves the brightness of white-light illuminating equipment, further, passes through the first convergent lens 211 and optical tunnel 22
Setting, can guide-lighting efficiency with higher, reduce the loss of light energy.
The utility model additionally provides a kind of endoscope, which includes lighting apparatus provided by the utility model, closes
In other technical characteristics of the endoscope, the prior art is referred to, details are not described herein.In the present embodiment, the endoscope
It further include CMOS (Complementary Metal-Oxide-Semiconductor, complementary metal oxide semiconductor) sensing
Device, the above-mentioned lighting apparatus for obtaining high bright light source using LASER Excited Fluorescence powder can make up cmos sensor and be imaged under low-light (level)
The bad defect of quality, is effectively reduced the noise of cmos sensor under the support of high bright light source, to realize that cmos sensor exists
Application on endoscope.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation be not intended to limit the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe
Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, but all without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still
It is within the scope of the technical solutions of the present invention.
Claims (25)
1. a kind of lighting apparatus, it is characterised in that: including light source assembly, the light source assembly include first light source, diffusion sheet and
Dichroscope, the diffusion sheet are set between the first light source and the dichroscope, and the diffusion sheet is for spreading institute
State the light of first light source.
2. lighting apparatus according to claim 1, it is characterised in that: the half-peak breadth of the diffusion sheet angle of scattering is 2-5 °,
Scattering light of the light of the first light source after the diffusion sheet has flat-top distribution.
3. lighting apparatus according to claim 1, it is characterised in that: the light source assembly further include the first collimation lens,
Second collimation lens, fluorescence disk and reflection diffusion disc, the dichroscope are placed relative to the inclined light shaft of the first light source,
The fluorescence disk and the first light source are located at the same side of the dichroscope, and first collimation lens is set to described glimmering
Between CD and the optical path of the dichroscope, the reflection diffusion disc and the first light source are located at the dichroscope
Two sides, second collimation lens be set to the dichroscope and it is described reflection diffusion disc optical path between.
4. lighting apparatus according to claim 3, it is characterised in that: the optical axis of the dichroscope and the first light source
In -45 ° of angles, the primary optical axis of first collimation lens and the optical axis of the first light source are mutually perpendicular to, second collimation
The primary optical axis of lens and the optical axis of the first light source are located along the same line.
5. lighting apparatus according to claim 3, it is characterised in that: first collimation lens and/or second standard
Straight lens are convex lens.
6. lighting apparatus according to claim 3, it is characterised in that: first collimation lens and/or the second collimation are saturating
Mirror is the lens that section is cup type, the section be cup type lens towards the fluorescence disk or it is described reflection diffusion disc one
End forms the cylindrical recessed portion that the lens interior that the oriented section is cup type is recessed, at the bottom of the cylinder recess
Portion is formed with an arcwall face towards the fluorescence disk or reflection diffusion disc side protrusion.
7. lighting apparatus according to claim 3, it is characterised in that: the setting of the dichroscope, so that a part the
The light beam of one light source reflects on dichroscope, and make the light beam of first light source described in another part through described two to
Look mirror, the light beam reflected on the dichroscope is by fluorescence disk described in the first collimation lens directive, through institute
The light beam of dichroscope is stated by reflecting diffusion disc described in the second collimation lens directive.
8. lighting apparatus according to claim 7, it is characterised in that: the dichroscope projects the first light source
The transmissivity of light beam is 10%-40%.
9. lighting apparatus according to claim 1, it is characterised in that: the light source assembly includes reflecting mirror and fluorescence disk,
Inclined light shaft placement of the dichroscope relative to the first light source, the fluorescence disk and the reflecting mirror are set to described
The other side of the dichroscope relative to the first light source, offers aperture on the dichroscope, the reflecting mirror with it is described
Fluorescence disk cooperation so that pass through the aperture light by the reflecting mirror reflected illumination to the fluorescence disk on, and
Dichroscope described in directive again occurs after wavelength convert on the fluorescence disk.
10. lighting apparatus according to claim 9, it is characterised in that: the reflecting mirror includes the first plane mirror and second
Plane mirror, the dichroscope, first plane mirror, second plane mirror and the fluorescence disk are set in sequence along optical path,
The dichroscope and the angle of the first light source are 45 °, and first plane mirror is set to the lower section of the dichroscope,
First plane mirror is at right angles laid with second plane mirror, the light projected by the fluorescence disk wavelength convert
Optical axis passes through the aperture of the dichroscope, and is mutually perpendicular to the optical axis of the first light source.
11. lighting apparatus according to claim 9, it is characterised in that: the reflecting mirror is right-angle prism, the dichroic
Mirror, the right-angle prism and the fluorescence disk are set in sequence along optical path, angle of the dichroscope due to the first light source
Be 45 °, the optical axis of the light projected by the fluorescence disk wavelength convert passes through the aperture of the dichroscope, and with it is described
The optical axis of first light source is vertical.
12. the lighting apparatus according to any one of claim 3 or 9, it is characterised in that: the first light source is blue light
Laser light source.
13. lighting apparatus according to claim 1, it is characterised in that: the diffusion sheet includes the first diffusion sheet and second
Diffusion sheet, the light source assembly further include second light source and fluorescence disk, first diffusion sheet be set to the first light source with
Between the dichroscope, the dichroscope is placed relative to the inclined light shaft of the first light source, the second light source, institute
It states the second diffusion sheet and the fluorescence disk is set in sequence along the optical path of the second light source, second diffusion sheet is set to described
Between second light source and the fluorescence disk, the cooperation of the second light source, the fluorescence disk and the dichroscope, so that by
The optical axis of light and the optical axis of the first light source projected after the fluorescence disk conversion is mutually perpendicular to.
14. lighting apparatus according to claim 13, it is characterised in that: first diffusion sheet, second diffusion sheet
And the cooperation of the fluorescence disk three scattering property and position, so that the light of the second light source is formed described two on mirror
Hot spot, the size of the hot spot formed described two on mirror with the light of the first light source is adapted.
15. lighting apparatus according to claim 13, it is characterised in that: the first light source be blue laser light source or
LED light source, the second light source are blue light, purple light or ultraviolet laser light source.
16. the lighting apparatus according to any one of claim 3,9 or 13, it is characterised in that: the fluorescence disk is ring
Shape disk, the light emitting region including multiple circumferential arrays along circular disk, be coated in the light emitting region red fluorescence powder,
Green emitting phosphor and/or yellow fluorescent powder.
17. lighting apparatus according to claim 16, it is characterised in that: coat red green fluorescence powder or red on the fluorescence disk
Yellow fluorescent powder.
18. lighting apparatus according to claim 16, it is characterised in that: be additionally provided with radiating bottom plate on the fluorescence disk.
19. lighting apparatus according to claim 1, it is characterised in that: the lighting apparatus includes Lens Coupling component, institute
Light source assembly and the Lens Coupling component sequential are stated, the light that the light source assembly issues enters the Lens Coupling group
In part, the Lens Coupling component includes the first convergent lens, optical tunnel and conduction optical fiber, first convergent lens, described
Optical tunnel and the conduction optical fiber are set in sequence.
20. lighting apparatus according to claim 19, it is characterised in that: the optics of the light beam projected from the light source assembly
Propagation is less than or equal to the etendue of the conduction optical fiber.
21. lighting apparatus according to claim 19, it is characterised in that: the optical tunnel is tapered, from far from the biography
One end of guiding fiber to one end close to the conduction optical fiber, the diameter of the optical tunnel constantly reduces, and the optical tunnel is close
The diameter of one end of the conduction optical fiber is identical as the conduction diameter of end face of optical fiber.
22. lighting apparatus according to claim 19, it is characterised in that: the Lens Coupling component further includes the second convergence
Lens, first convergent lens, second convergent lens, the optical tunnel and the conduction optical fiber are along the transmitting side of light
To being set in sequence, the optical tunnel is cylinder, and the section of the optical tunnel is the cross sectional shape phase with the conduction optical fiber
The circle matched.
23. lighting apparatus according to claim 19, it is characterised in that: in the optical tunnel far from the conduction optical fiber
The focused light spot and divergence half-angle that one end is formed are respectively less than or equal to the face area and the conduction light of the conduction optical fiber
Fine collection angle.
24. a kind of endoscope, it is characterised in that: set including illumination described in any one of claim 1 to claim 23
It is standby.
25. endoscope according to claim 24, it is characterised in that: further include cmos sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926140.5U CN208547765U (en) | 2018-06-14 | 2018-06-14 | Lighting apparatus and endoscope with the lighting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926140.5U CN208547765U (en) | 2018-06-14 | 2018-06-14 | Lighting apparatus and endoscope with the lighting apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN208547765U true CN208547765U (en) | 2019-02-26 |
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ID=65422634
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820926140.5U Withdrawn - After Issue CN208547765U (en) | 2018-06-14 | 2018-06-14 | Lighting apparatus and endoscope with the lighting apparatus |
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| Country | Link |
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| CN (1) | CN208547765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459409A (en) * | 2018-06-14 | 2018-08-28 | 上海安翰医疗技术有限公司 | Lighting apparatus and endoscope with the lighting apparatus |
-
2018
- 2018-06-14 CN CN201820926140.5U patent/CN208547765U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459409A (en) * | 2018-06-14 | 2018-08-28 | 上海安翰医疗技术有限公司 | Lighting apparatus and endoscope with the lighting apparatus |
| CN108459409B (en) * | 2018-06-14 | 2024-06-07 | 上海安翰医疗技术有限公司 | Lighting device and endoscope with same |
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