CN201984212U

CN201984212U - LED (light-emitting diode) fluorescent illumination device

Info

Publication number: CN201984212U
Application number: CN2010206293696U
Authority: CN
Inventors: 陈木旺
Original assignee: Maike Aodi Industry Group Co Ltd
Current assignee: Maike Aodi Industry Group Co Ltd
Priority date: 2010-11-17
Filing date: 2010-11-17
Publication date: 2011-09-21
Anticipated expiration: 2020-11-17

Abstract

The utility model discloses an LED (light-emitting diode) fluorescent illumination device, which comprises a plurality of replaceable LED modules mounted on a fluorescence excitation switching device and a fixed common condensing mirror, wherein the LED modules can be switched between a working region and a non-working region under the drive of the fluorescence excitation switching device, each LED module comprises an LED and a color filtering block, when one LED module is positioned in the working position, the LED module enters into the working region of the common condensing mirror, the LED is illuminated, light emitted by the LED is converged by the condensing mirror, then enters into the color filtering block and is further reflected by a light splitting and color splitting piece in the color filtering block and finally vertically radiated on a cut piece for exciting the cut piece to emit fluorescence; and the LED modules in other wavelengths sequentially enter into the working region of the common condensing mirror, thereby realizing switching between the different excitation wavelengths. By adopting the LED fluorescent illumination device, the time-sharing work of the plurality of the LED modules can be realized, the flexibility of a system is ensured, and the cost of the system is simultaneously reduced.

Description

A kind of LED fluorescent lighting device

Technical field

The utility model relates to the technical field of fluorescent lighting device in the fluorescent microscope, refers in particular to a kind of fluorescent lighting device that adopts a plurality of LED as light source.

Background technology

The image of high-contrast is subjected to using widely fluorescent microscope because of obtaining more.In the prior art, fluorescent microscope mainly is made up of fluorescence excitation source, condenser system, colour filter piece (by exciting color filter, beam split color separation film and stopping that color filter forms) and microscope, concrete principle is: the light that sends after the energising of fluorescence excitation source through condenser system, excite color filter (can only see through light) and beam split color separation film (to reflect light less than certain wavelength less than certain wavelength, and transmissive is greater than the light of this wavelength) be imaged on the back focal plane of object lens in the microscope, form a cola illuminator with object lens, can on sample, obtain to fall to penetrating uniformly illumination; Sample is subjected to falling to penetrating according to exciting the back to produce fluorescence, its wavelength greater than the beam split color separation film can transmission light wavelength, this fluorescence directly sees through the beam split color separation film and stops color filter (can only see through the light greater than a certain wavelength), arrives eyepiece or camera head for observation.Select different colour filter pieces for use, can realize that different wavelength excites.

In order to guarantee that the observer can see fluoroscopic image, require the fluorescence excitation source that stronger brightness can be provided on certain wavelengths, traditional fluorescent microscope mainly is to adopt gases at high pressure lamp such as mercury lamp, Metal halogen lamp is as the fluorescence excitation source, these light sources can provide stronger radiation intensity on special wave band, but power height (generally wanting 100W), life-span short (life-span of import mercury lamp was generally 200 hours), cost an arm and a leg, the while poor stability, the heat radiation sample of can burning by force, start needs preheating, shutdown needs cooling, even can bring the danger of blast, and these unfavorable factors have limited the range of application of fluorescent microscope to a certain extent.

Along with the development of LED, its radiation power can satisfy the requirement in fluorescence excitation source, has begun to be applied in the illumination of fluorescent microscope, have the following advantages: stability is high, brightness is adjustable continuously, promptly opens promptly to close, and is low in energy consumption, volume is little, cost is low, and the life-span is long, does not have heat radiation, can not damage section, without explosion danger.

A section is dyed usually multiple fluorescent dye is arranged, need multiple different excitation wavelength, but a LED can only provide exciting of single wavelength, does not satisfy this requirement, generally can only be used for specific use, as the Primo star iLED of Zeiss, be specifically designed to the pulmonary tuberculosis diagnosis, can only dispose the LED and the corresponding colour filter piece of a wavelength, excite as other wavelength of need, need open loom, change LED and colour filter piece again, use inconvenient.

AMG Co. has released a fluorescent microscope EVOS f1 that can dispose a plurality of different wave length LED and colour filter piece, can between different wave length, switch, adopted the patent scheme of US7502164 (SolidState Fluorescence Light Assembly And Microscope), be about to LED, condenser and colour filter piece lump together, as a module, be called LED lightcube, then a plurality of LED light cube are installed on the fluorescence excitation switching device shifter, drive LED li ght cube by the fluorescence excitation switching device shifter and between working position and off-position, switch.In this scheme, each LED light cube all needs 1 condenser, if every fluorescent microscope need dispose 10 wave band LED light cube, then needs 10 condensers, makes cost improve much; In addition, in this scheme, led module is fixed because of condenser system, can only be used for certain microscope, and versatility is not high.

The utility model content

The purpose of this utility model is to provide a kind of LED fluorescent lighting device, only need a shared condenser system and a plurality of led module that constitutes by LED and colour filter piece, realize the time-sharing work of a plurality of led modules, when guaranteeing system flexibility, reduced system cost.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of LED fluorescent lighting device, form by a plurality of removable led module and a fixing shared condenser of being installed on the fluorescence excitation switching device shifter, led module is driven by the fluorescence excitation switching device shifter and switches between working position (promptly entering the perform region of shared condenser) and off-position (promptly leaving the perform region of shared condenser), led module is made up of LED and colour filter piece, when led module is positioned at the working position, enter the perform region of shared condenser, LED lights, its light that sends enters the colour filter piece after condenser converges, reflect by the beam split color separation film in the colour filter piece again, fall to penetrating at last in section, excite section to send fluorescence; Make the led module of other wavelength enter the perform region of shared condenser successively, can realize the switching of different excitation wavelengths.

In all above-mentioned led modules, when indivedual LED optical parametrics are different, when particularly the LED virtual image is in different size, this moment, condenser can not be shared fully, should behind this LED, increase an attachment lens, make it the same with other led module through the size of the virtual image behind this attachment lens, like this can shared original condenser.

Dug a groove in the above-mentioned led module, between LED or attachment lens (as attachment lens time) and colour filter piece, made led module to pass from fixing shared condenser.

Above-mentioned led module is equipped with two electrodes, the both positive and negative polarity that connects LED respectively, have only when led module is positioned at the working position, two electrodes are connected with two fixation spring tabs in adjustable constant-flow source respectively, LED obtains power supply and also lights, and led module work is when led module departs from when leaving the working position, two electrodes promptly disconnect with shell fragment, and LED closes because of outage.

Above-mentioned colour filter piece is by exciting color filter, beam split color separation film and stopping that color filter forms.

Above-mentioned led module working position, promptly the perform region of condenser excites the line of centres of color filter and the optical axis coincidence of condenser in LED center and the colour filter piece at this moment, and the light that LED sends can converge by condenser and enter the colour filter piece.

Above-mentioned led module, the LED curve of spectrum of its configuration and the curve of spectrum of colour filter piece are all different, and promptly each led module can produce different excitation wavelengths.

Above-mentioned fluorescence excitation switching device shifter is one can make curve or straight-line device, as the rotating disk that moves in a circle or do straight-line slide etc., when the different led module of fluorescence excitation switching device shifter timesharing drive enters the working position, can produce different excitation wavelengths.

After adopting such scheme, the utility model is compared with the fluorescent lighting device of prior art, has the following advantages:

One, all shared condenser system of led module, cost further reduces;

Two, led module is not because of having optical system or attachment lens is only arranged, and versatility is higher, can be directly used in the lighting device of other different condenser systems;

Three, all led modules are replaceable, are convenient to the user and match as required;

Four, led module is exempted from debugging, and plug and play is promptly opened promptly and closed, and is easy to use.

Description of drawings

Fig. 1 is mounted in the utility model (fluorescent lighting device) synoptic diagram on the microscope;

Fig. 2-the 1st, the side-looking index path during the utility model working position;

Fig. 2-the 2nd overlooks index path during the utility model working position;

Fig. 3 is the position view of LED in the utility model;

Fig. 4 is the cut-open view of led module in the utility model (not having attachment lens);

Fig. 5 is the cut-open view of (having attachment lens) of led module in the utility model;

Fig. 6 is the cut-open view that led module in the utility model (not having attachment lens) enters the condenser perform region;

Fig. 7 is the cut-open view that led module in the utility model enters (having attachment lens) the condenser perform region.

Label declaration

Slide 1 led module 2

LED 21 colour filter pieces 22

Excite color filter 221 beam split color separation films 222

Stop color filter 223 attachment lenses 23

Electrode 24 grooves 25

Condenser 3 shell fragments 4

Embodiment

With specific embodiment the utility model is done further with reference to the accompanying drawings and elaborated.

Shown in Fig. 1 and Fig. 2-1, Fig. 2-2, a kind of LED fluorescent lighting device that the utility model discloses is made up of a plurality of removable led module 2 and a fixing shared condenser 3 of being installed on the fluorescence excitation switching device shifter.

The fluorescence excitation switching device shifter adopts slide 1 form among the figure, slide 1 is installed on the microscope, 4 led modules 2 are housed on the slide 1, but slide 1 timesharing drives 4 led modules 2 switches between working position and off-position, wherein the working position promptly enters the perform region of shared condenser 3, and off-position promptly leaves the perform region of shared condenser 3.

Cooperate Fig. 3 and shown in Figure 4, led module 2 is made up of LED 21 and colour filter piece 22, colour filter piece 22 is by exciting color filter 221, beam split color separation film 222 and stop that color filter 223 forms, cooperate shown in Figure 5, in all led modules 2, at the different led module 2 of indivedual LED 21 optical parametrics, LED 21 virtual images led module 2 in different size particularly, shared fully in order to guarantee condenser 3, increase an attachment lens 23 in these LED 21 backs, make it the same with other led module 2 through the size of the virtual image behind this attachment lens 23, like this can shared original condenser 3.Also dug a groove 25 in the led module 2, between LED21 or attachment lens 23 (as attachment lens time) and colour filter piece 22, and enough width have been arranged, made led module 2 to pass from fixing shared condenser 3.Led module 2 is equipped with two electrodes 24, the both positive and negative polarity that connects LED 21 respectively, have only when led module 2 is positioned at the working position, two electrodes 24 are just connected with two fixation spring tabs 4 in adjustable constant-flow source respectively, LED 21 obtains power supplys and also lights, and led module 2 work are when led module 2 departs from when leaving the working position, two electrodes 24 promptly disconnect with shell fragment 4, and LED 21 closes because of outage.In all led modules 2, LED 21 curves of spectrum of its configuration and the curve of spectrum of colour filter piece 22 are all different, and promptly each led module 2 can produce different excitation wavelengths.

Principle of work of the present utility model is, when led module 2 slides into the working position by slide 1, enter the perform region of shared condenser 3, two electrodes 24 of LED 21 contact with the both positive and negative polarity shell fragment 4 in adjustable constant-flow source respectively, and LED 21 is lighted, its light that sends enters colour filter piece 22 after condenser 3 converges, by 222 reflections of the beam split color separation film in the colour filter piece 22, be imaged on the entrance pupil place of object lens again, form the cola illumination, through being radiated at equably in the section behind the object lens, excite section to send fluorescence; Make the led module 2 of other wavelength enter the perform region of condenser 3 successively, can realize the switching of different excitation wavelengths.

Fig. 6 is the cut-open view when not entering condenser 3 perform regions with the led module 2 of attachment lens 23, and excite the line of centres of color filter 221 and the optical axis coincidence of condenser 3 in LED 21 centers and the colour filter piece 22 this moment; Fig. 7 is the led module that has the attachment lens cut-open view when entering the condenser perform region, and excite the line of centres of color filter 221 and the optical axis coincidence of condenser 3 in LED 21 centers and the colour filter piece 22 this moment.

Above-mentioned only is a specific embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. LED fluorescent lighting device, it is characterized in that: form by a plurality of removable led module and a fixing shared condenser of being installed on the fluorescence excitation switching device shifter, led module is driven between the perform region of shared condenser and inoperative zone by the fluorescence excitation switching device shifter and switches, led module is made up of LED and colour filter piece, after led module enters the perform region of shared condenser, the light that sends after LED lights enters the colour filter piece after condenser converges, reflect by the beam split color separation film in the colour filter piece again, fall to penetrating at last in section, excite section to send fluorescence.

2. a kind of LED fluorescent lighting device as claimed in claim 1 is characterized in that: dig the groove that a shared condenser of confession passes in the led module, this groove is between LED and colour filter piece.

3. a kind of LED fluorescent lighting device as claimed in claim 1 is characterized in that: in all led modules, indivedual different led modules of LED optical parametric increase an attachment lens behind this LED.

4. a kind of LED fluorescent lighting device as claimed in claim 3 is characterized in that: dig the groove that a shared condenser of confession passes in the led module, this groove is between attachment lens and colour filter piece.

5. a kind of LED fluorescent lighting device as claimed in claim 1, it is characterized in that: led module is equipped with two electrodes, the both positive and negative polarity that connects LED respectively, when the perform region of the shared condenser of led module, two electrodes are connected with two fixation spring tabs in adjustable constant-flow source respectively, and LED obtains power supply and also lights, led module work, when led module departed from the perform region of leaving shared condenser, two electrodes promptly disconnected with shell fragment, and LED closes because of outage.

6. a kind of LED fluorescent lighting device as claimed in claim 1 is characterized in that:

The colour filter piece is by exciting color filter, beam split color separation film and stopping that color filter forms.

7. a kind of LED fluorescent lighting device as claimed in claim 1, it is characterized in that: the led module that enters the condenser perform region, excite the line of centres of color filter and the optical axis coincidence of condenser in its LED center and the colour filter piece, the light that LED sends converges by condenser and enters the colour filter piece.

8. a kind of LED fluorescent lighting device as claimed in claim 1, it is characterized in that: all led modules are the different led module of excitation wavelength, the LED curve of spectrum of its configuration and the curve of spectrum of colour filter piece are all different, and promptly each led module produces different excitation wavelengths.

9. a kind of LED fluorescent lighting device as claimed in claim 1 is characterized in that: the fluorescence excitation switching device shifter is one can make curve or straight-line device.