CN2914118Y - Microscope LED illuminating system with cold light source - Google Patents

Abstract

The utility model discloses a stereoscopic microscope LED array cold light source illuminating system, including a microscope body, an upper light source, a lower light source, a power supply and a power transfer switch, wherein, the upper light source is composed of an inner bracket, an outer fixed bracket, an upper light source LBD and a ring-shaped PCB circuit board; the lower light source is composed of a lower light source PCB circuit board and a lower light source LBD and is equipped and fixed under the ground glass for object placing on the microscope bottom. The power supply is connected with the power transfer switch by wires. And the power transfer switch is connected with all LBDs in the upper and lower light source by wires respectively. The utility model has the advantages of (I) low manufacture cost, easy installation and convenient usage; (II) beautiful appearance and simple structure; (III) electricity-saving, little heat output and long service life; (IV) stable and reliable light dimmer, no thermal inertia, no flicker, no stroboflash, no visual fatigue caused; (V) high brightness and high target resolution.

Description

Stereo microscope LED cold light source illuminator

Technical field

The utility model is a kind of stereo microscope LED cold light source illuminator, belongs to the application of cold light source illumination in stereomicroscope.

Technical background

Hot-cathode fluorescent lamp is mainly used in the stereomicroscope illumination, its power consumption is bigger, life-span is short, generally have only about 5000 hours, and it has the glow frequency instability, easily glimmers, and causes confused Chu, eye fatigue, shortcomings such as light adjusting circuit complexity, cost height, failure rate height, poor reliability.The utility model has solved the problems referred to above well.

Summary of the invention

The purpose of this utility model provides a kind of stereo microscope LED array cold light source illuminator.For stereomicroscope provides efficient, energy-conservation, reliablely and stablely cold light source illumination.

The technical solution of the utility model is achieved as follows: stereo microscope LED cold light source illuminator, comprise microscope body, last light source, following light source, power supply etc., wherein, last light source is made up of the PCB circuit board of interior carriage, external fixation carriage, last light source light emitting diode (LED), annular, last light source light emitting diode is fixed on the PCB circuit board of annular, and be fixed on outside the object lens by external fixation carriage and interior carriage, can move up and down with object lens.Described light source down is made up of following light source PCB circuit board and following light source luminescent diode, and this time light source is mounted on the frosted glass below that object is placed in the microscope body bottom.

For ease of adjusting the brightness of this stereomicroscope LED cold light source illuminator, described power supply can pass through the wire connecting power switch, and transfer switch connects each light emitting diode (LED) in the upper and lower light source by lead respectively.

The utlity model has following advantage: (one) low cost of manufacture, be easy to install, easy to use; (2) good looking appearance, simple in structure; (3) power saving, minimum, the long service life of thermal value; (4) light modulation is stable, reliable, and no thermal inertia, flicker free, no stroboscopic do not cause visual fatigue; (5) brightness height, target resolution height.

Description of drawings

Fig. 1: the utility model one-piece construction figure

Fig. 2: carrier structure figure in the light source on the utility model

The A-A cut-open view of Fig. 3: Fig. 2

Fig. 4: light source pcb board figure under the utility model

Fig. 5: the utility model lighting theory synoptic diagram

Fig. 6: the utility model circuit system schematic diagram

Specific embodiments:

Referring to Fig. 1,2,3,4,5, the described stereo microscope LED cold light source of present embodiment illuminator, comprise microscope body 1, last light source, following light source, power supply 13, power change-over switch 11 etc., wherein, last light source is made up of the last light source PCB circuit board 20 of interior carriage 3, external fixation carriage 4, last light source light emitting diode (LED) 5, annular, last light source light emitting diode 5 is fixed on the PCB circuit board 20 of annular, and be fixed on outside the object lens 2 by external fixation carriage 4 and interior carriage 3, can move up and down with object lens 2.Described light source down is made up of following light source PCB circuit board 9 and following light source luminescent diode 8, and this time light source is mounted on the frosted glass below that object is placed in microscope body 1 bottom.

Last light source light emitting diode 5 described in the present embodiment adopts 32 Φ 5 super brightness (13000mcd), and long-life (100,000 hours) white light-emitting diode is formed, and is spacedly distributed, and forms circular being fixed on the annular last light source PCB circuit board 20.Have the fixing card 19 of a connection terminal on the interior carriage 3 of annular plastics of band " recessed " type mouth, be used to connect lead, the bottom of carriage 3 has 32 " eight " type holes 17 in being somebody's turn to do simultaneously.During installation, the PCB circuit board 20 that is welded with the annular of light source light emitting diode 5 embeds in the above-mentioned interior carriage 3, light source light emitting diode 5 is aimed at one by one with " eight " type hole 17 of falling of interior carriage 3 bottoms on each, firmly push PCB circuit board 20 and can make the pin natural torsion of light source light emitting diode 5 on each and surface level form 68 ° angle, make that light source light emitting diode 5 emits beam on each just in time can evenly focus on the target.The angle of last light source LED5 and plastic pallet can be 68 °, also can be not equal to 0 ° at least greater than 68 °, or, be not more than 90 ° at least, when object lens 2 move up and down less than 68 ° (deciding) on the LED visual angle, last light source is with object lens 2 one startings, and the maintenance hot spot focuses on the object all the time.

For gaining in strength, be provided with four reinforcements 18 in the carriage 3 in present embodiment is described.

Described light source luminescent diode down 8 adopts 18 Φ 5 super brightness (13000mcd), long-life (100,000 hours) white light-emitting diode is formed, array is fixed on down on the light source PCB circuit board 9, light shines directly on the object above it, because the observed object of its distance is nearer, the angle of divergence of following light source luminescent diode 8 is bigger than last light source light emitting diode 5.

Referring to accompanying drawing 6, the circuit side connector case of the described stereo microscope LED cold light source of present embodiment illuminator is: go up 32 LED5 in the light source, and parallel with one another again behind per two polyphones.18 LED8 in the following light source, in parallel again behind the polyphone equally in twos.

Power supply 13 connects transfer switch 11 by lead 12, and transfer switch 11 connects upper and lower light source by lead 6,10 respectively, is each LED power supply in the upper and lower light source.Attaching plug 15 is connected with power supply 13 by lead 14.

Luminance potentiometer 16 utilizes lead 7 to be connected on the power supply 13, regulates the resistance of luminance potentiometer 16, and the DC voltage of power supply 13 outputs can change within the specific limits, to realize the adjusting of light-source brightness up and down.

In order to reduce volume, power supply 13 adopts the AC-DC power supply power supply (also available transformer rectification circuit power supply) of 4-5W in the present embodiment.Adjustable continuously, stable, reliable in the requirement output voltage 5-9V scope, output current is not less than maximum current (500mA) when light source is worked simultaneously up and down, and high-low pressure will be isolated.

The LED light emitting diode is selected illuminating long-life (light decay reduces), the white pipe of super brightness (light intensity is not less than 12000mcd), and its half-power angle should be not less than 14 degree, but also should be too not big, otherwise luminous energy is not concentrated.

The resistance of contacting among the every couple of LED plays the dividing potential drop effect, causes each LED brightness irregularities to prevent LED parameter dispersiveness, so the parameter of the selection of its resistance and LED and electric power output voltage etc. are directly related, should calculate as follows: $R=\frac{V-V_{\mathrm{LED}}}{0.02}\left(\mathrm{\Ω}\right).$ Wherein: V is the voltage that is added in upper and lower light source two ends: V _LEDBe the terminal voltage of LED when 20 milliamperes of electric currents.The desirable summary of R is bigger than calculated value during actual value.

Luminance potentiometer 16, its resistance should be determined according to electric power output voltage scope, power and LED load size, can regulate output voltage stably when requiring to drive load, make the brightness of LED more secretly reach requirement for spending to brightness by maximum (each is by maximum 20mA electric current), resistance can not be too big, otherwise brightness that can not stable regulation LED.

Last light source and following light source can be installed and used simultaneously also can distinguish to install separately as lighting source in a stereomicroscope and use.Can switch on simultaneously when installing and using simultaneously in stereomicroscope work and light modulation also can be distinguished separately by work and light modulation.Can also can power respectively with 13 power supplies of a power supply for the scope of application of enhanced system, can connect alternating current by plug 15 and give power supply 13 powered operation, also can directly connect DC power supply without power supply 13 and plug 15 with different electrical power.For be more convenient for working service and change LED lamp battle array of total system, light source can connect by two PIN up and down, also can directly dock.The utility model is that therefore exploitation the utlity model has good market outlook and social benefit to the new application of existing stereomicroscope cold light source illumination.

Claims (10)

1. stereo microscope LED cold light source illuminator, it is characterized in that comprising microscope body, last light source, following light source, power supply etc., wherein, last light source is made up of the PCB circuit board of interior carriage, external fixation carriage, last light source light emitting diode (LED), annular, last light source light emitting diode is fixed on the PCB circuit board of annular, and be fixed on outside the object lens by external fixation carriage and interior carriage, described light source down is made up of following light source PCB circuit board and following light source luminescent diode, and this time light source is mounted on the frosted glass below that object is placed in the microscope body bottom.

2. stereo microscope LED cold light source illuminator as claimed in claim 1 is characterized in that described power supply by the wire connecting power switch, and transfer switch connects each light emitting diode in the upper and lower light source by lead respectively.

3. stereo microscope LED cold light source illuminator as claimed in claim 1, it is characterized in that the described light source light emitting diode 5 of going up adopts 32 φ 5 super brightness (13000mcd), long-life (100,000 hours) white light-emitting diode is formed, following light source luminescent diode 8 adopts 18 Ф 5 super brightness (13000mcd), and long-life (100,000 hours) white light-emitting diode is formed.

4. stereo microscope LED cold light source illuminator as claimed in claim 1 or 2 is characterized in that the half-power angle of described each light emitting diode is not less than 14 degree.

5. stereo microscope LED cold light source illuminator as claimed in claim 2 is characterized in that the described LED that goes up in the light source, and is parallel with one another again behind per two polyphones, and the LED in the following light source is in parallel again behind the polyphone equally in twos.

6. stereo microscope LED cold light source illuminator as claimed in claim 1 is characterized in that the bottom of described interior carriage has down " eight " type hole.

7. stereo microscope LED cold light source illuminator as claimed in claim 4 is characterized in that the described LED that goes up in the light source, per two polyphones, it is parallel with one another behind the divider resistance to connect again, LED in the following light source, polyphone is parallel with one another behind the divider resistance of connecting again equally in twos.

8. stereo microscope LED cold light source illuminator as claimed in claim 1 is characterized in that also comprising a luminance potentiometer, and it utilizes lead to be connected on the power supply.

9. stereo microscope LED cold light source illuminator as claimed in claim 1, it is characterized in that described on each the pin natural torsion of light source light emitting diode and surface level form greater than 0 ° and smaller or equal to 90 ° angle.

10. stereo microscope LED cold light source illuminator as claimed in claim 1 is characterized in that light source connects by two PIN up and down, perhaps directly butt joint.

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