CN209858839U - Microscope lighting device with adjustable color temperature - Google Patents
Microscope lighting device with adjustable color temperature Download PDFInfo
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- CN209858839U CN209858839U CN201921045406.6U CN201921045406U CN209858839U CN 209858839 U CN209858839 U CN 209858839U CN 201921045406 U CN201921045406 U CN 201921045406U CN 209858839 U CN209858839 U CN 209858839U
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Abstract
The utility model discloses a colour temperature adjustable microscope lighting device, include: the LED light source is symmetrically or uniformly distributed in space, and the control circuit can simultaneously control the color temperature and the brightness of the LED light source; the control circuit is respectively connected with the human-computer interface and the LED light source and consists of a color temperature adjusting unit, a brightness adjusting unit, a main control system unit and a color temperature sensor; the master control system unit controls the brightness of the LED chips with different color temperatures through the LED light source driving module, and adjusts the lighting color temperature and brightness of the microscope. The utility model provides a can be accurate effectual regulation shine the microscope lighting device of the colour temperature and the luminance of the white light on the sample face, make the microscope can satisfy in different environment or sample needs, obtain the observation effect of preferred, the utility model discloses simple structure, optics utilization ratio is high, and the colour temperature is more stable.
Description
Technical Field
The utility model relates to a microscope technical field, in particular to colour temperature adjustable microscope lighting device.
Background
The illumination device is an important component of the optical system of the modern microscope, and with the rapid development of science and technology, the requirements of the modern microscope on the illumination system are higher and higher, and for different observables, a light source with a proper color temperature is required for illumination so as to obtain the optimal observation effect.
The existing illumination system with the adjustable color temperature of the microscope, such as come co US 2008/0151368 Al, adopts a method of replacing a light source module to adjust the color temperature, is complex to operate, cannot realize continuous adjustment of the color temperature, and affects the observation efficiency. Patent CN102768402B discloses a microscope illumination system with continuously adjustable color temperature, which simply uses a plurality of LEDs with different color temperatures, but the LED spacing is large, the light mixing is not uniform, and the optical utilization rate is low. Patent CN107505697A by shun-u corporation discloses a microscope illumination system with continuously adjustable color temperature, which utilizes a plurality of LEDs with different color temperatures, and combines a planar light source made of a light guide plate and a diffusion plate to realize uniform light mixing, but has a complex structure and low optical utilization rate. The prior patent CN107911909A discloses an operating microscope and a method for continuously adjusting the illumination color temperature thereof, comprising an LED light source which irradiates a sample after being homogenized by any one or a combination of a lens, a reflecting cup and a conical prism, the color temperature is fed back and displayed on a human-computer interface by a control circuit, and the color temperature is adjusted by the human-computer interface. However, the structure is more complicated due to the fact that light is uniformized, and the structure is simpler due to the fact that light is uniformized through parts.
Disclosure of Invention
The utility model aims at providing a microscope lighting device aims at realizing the high-efficient colour temperature of continuous adjustment illumination under the prerequisite of not changing the light source.
In order to solve the above problem, the technical scheme of the utility model is that: a color temperature tunable microscope illuminator, comprising: the LED light source is symmetrically or uniformly distributed in space, and the control circuit can simultaneously control the color temperature and the brightness of the LED light source; the method is characterized in that: the control circuit is respectively connected with the human-computer interface and the LED light source, and consists of a color temperature adjusting unit, a brightness adjusting unit, a main control system unit and a color temperature sensor, wherein the main control system unit comprises a signal processing module and an LED light source driving module; the master control system unit controls the brightness of the LED chips with different color temperatures through the LED light source driving module, and adjusts the lighting color temperature and brightness of the microscope.
The LED light source is a compact multi-color temperature LED light source.
The control circuit is connected with the LED light source and used for adjusting the color temperature and the brightness of the LED light source.
The LED light source irradiates the surface of the specimen after being converged by the light collecting mirror, and is homogenized, wherein the light collecting mirror is provided with a frosted surface or a fog surface.
The color temperature of the LED light source is continuously adjusted within the range of 2700K-6500K.
The LED light source is a compact LED light source in a Surface Mount Device (SMD) or on-board package (COB) or other packaging modes.
The LED light source encapsulates LED chips with at least two color temperatures in a single LED, and has small luminous surface and high optical utilization rate.
The master control system unit receives the adjusting information of the color temperature adjusting unit, outputs a plurality of paths of currents with different duty ratios through the LED light source driving module, controls the brightness of the LED chips with different color temperatures, and realizes the adjustment of the color temperature of the microscope lighting source.
The main control system unit receives the adjusting information of the brightness adjusting unit, and the output current with the same duty ratio is increased or reduced in an equal proportion through the LED light source driving module to control the brightness of the LED chips with different color temperatures, so that the brightness of the microscope lighting source is adjusted.
The color temperature sensor monitors the color temperature of the LED light source in real time, when the color temperature of the LED light source fluctuates in the using process of a user, the color temperature sensor feeds back information to the main control system unit, and the main control system unit adjusts the output current of the LED driving module in real time according to the received information to ensure the stability of the color temperature of the LED light source.
The color temperature adjusting unit and the brightness adjusting unit independently control color temperature and brightness.
The color temperature sensor measures the actual color temperature.
The color temperature sensor is a color sensor and used as a feedback unit for feeding back the real-time color temperature information of the LED to the control circuit.
The duty ratio does not need to form a certain proportion, and the aims of changing the color temperature and the brightness can be achieved only by forming the duty ratio.
The utility model discloses compare with prior art's microscope lighting device: simple structure, high optical utilization rate and more stable color temperature.
Drawings
The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
fig. 1 is a schematic structural view of a microscope lighting device of the present invention.
Fig. 2-1 is a schematic structural diagram of the color temperature adjustable microscope illumination device LED of the present invention.
Fig. 2-2 is a schematic structural diagram of the color temperature adjustable microscope illumination device LED of the present invention.
Fig. 3 is a schematic structural view of a light collecting mirror in a microscope illuminator according to the present invention.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
As shown in fig. 1, the implementation of the technical solution of the present invention includes: the LED light source comprises a control circuit 1, an LED light source 2 and a light collecting mirror 3, wherein the control circuit 1 further comprises a color temperature control unit 4, a brightness control unit 5, a color temperature sensor 6 and a main control system unit 7. The LED light source 2 is connected with the control circuit 1, and the color temperature and the brightness of the LED light source 1 can be respectively controlled through adjusting knobs of the color temperature control unit 4 and the brightness control unit 5. The light emitted from the LED light source 2 passes through the condenser lens 3 and is then irradiated onto the specimen 8.
According to the embodiment of the present invention, the LED light source 2 is a compact multi-color temperature LED light source, and the LED chips with at least two color temperatures are packaged in a single LED, preferably with symmetrical distribution or even distribution, such as the LED light source structure shown in fig. 2-1 and 2-2, the LED chips 11 with cold color temperature and the LED chips 12 with warm color temperature are symmetrically distributed or the LED chips 11 with cold color temperature and the LED chips 12 with warm color temperature are uniformly distributed at intervals, so as to ensure uniform mixing (e.g. LE CWUW S2W compact light source of Osram company; TX-3535WA3FC120-OGVCND34-03B packaged in xinxin photoelectric SMD package or 1309SW08A-2757V36-01H80 compact light source packaged in COB package), and can be continuously adjusted within the range of 2700K-6500K. The LED chips of at least two color temperatures are packaged into the multi-color temperature LED, so that the color temperature can be continuously adjusted from low to high, the color temperatures are uniformly mixed, the color temperature and brightness consistency of the microscope specimen surface illumination is ensured, and the good observation effect is ensured.
According to the utility model discloses a specific embodiment, LED light source 2 and control circuit 1 interconnect contain colour temperature control unit 4, luminance control unit 5, colour temperature sensor 6, major control system unit 7 in the control circuit 1. The color temperature control unit 4, the brightness control unit 5 and the color temperature sensor 6 are respectively connected with the main control system unit 7.
The user adjusts the color temperature of the LED light source 2 by the adjustment knob of the color temperature control unit 4. The main control system unit 7 receives the adjusting information of the adjusting knob of the color temperature adjusting unit 4, processes and analyzes the information, and outputs different currents to the LED chips with different color temperatures in the LED light source 2 through the LED light source driving module, and the LED chips with different color temperatures emit light with different intensities due to certain duty ratios. After mixing, the LED light source 2 finally emits a uniform white light of the color temperature desired by the user.
The user adjusts the brightness of the LED light source 2 by means of the adjustment knob of the brightness control unit 5. The main control system unit 7 receives the adjusting information of the adjusting knob of the brightness control unit 5, processes and analyzes the adjusting information, increases or decreases the LED light source driving module in equal proportion to output different currents to the LED chips with different color temperatures in the LED light source 2, and has a certain duty ratio, wherein the duty ratio is the duty ratio of the currents of the LED chips with different color temperatures when the user adjusts the required color temperature by using the color temperature adjusting knob 4. By increasing or decreasing the current of the same duty ratio in equal proportion, the user adjusts the brightness of the LED light source 2 by the adjusting knob of the brightness control unit 5.
After the user finishes adjusting the color temperature of the LED light source 2, if the color temperature of the LED light source 2 fluctuates during the use process, the color temperature sensor 6 (such as TCS3400 color sensor of AMS company) for monitoring the color temperature of the LED light source 2 in real time feeds back the fluctuating information to the main control system unit 7, and the main control system unit 7 controls the LED light source driving module to adjust the output current in real time according to the feedback information, so that the current size and duty ratio of the LED chips of various color temperatures of the LED light source 2 are ensured to be unchanged, and the color temperature of the LED light source 2 set by the user is ensured to be stable.
According to the embodiment of the present invention, the light emitted from the preferred LED light source 2 passes through the light collecting mirror 3 and then irradiates the specimen 8. As shown in fig. 3, the light collecting mirror 3 includes a frosted surface 31 or a frosted surface 31, and the light emitted from the LED light source 2 is further uniformized to ensure good uniformity of color temperature and brightness of the light irradiated on the specimen 8.
It is right above the utility model provides a pair of colour temperature adjustable microscope lighting device introduces in detail. The color temperature of the microscope illumination light source can be adjusted, the observation efficiency is improved, the requirements of different environments or observers on the illumination color temperature are met, and a better observation effect is obtained. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. A color temperature tunable microscope illuminator, comprising: the LED light source is symmetrically or uniformly distributed in space, and the control circuit can simultaneously control the color temperature and the brightness of the LED light source; the method is characterized in that: the control circuit is respectively connected with the human-computer interface and the LED light source and consists of a color temperature adjusting unit, a brightness adjusting unit, a main control system unit and a color temperature sensor; the main control system unit comprises a signal processing module and an LED light source driving module.
2. Color temperature adjustable microscope illumination device according to claim 1, characterized in that: the LED light source is a Surface Mount Device (SMD) or a Chip On Board (COB).
3. Color temperature adjustable microscope illumination device according to claim 2, characterized in that: the LED light source packages LED chips with at least two color temperatures in a single LED.
4. Color temperature adjustable microscope illumination device according to claim 1, characterized in that: the LED light source is converged by the light collecting lens and then irradiates the surface of the sample, and the LED light source is homogenized.
5. Color temperature tunable microscope illumination device according to claim 4, characterized in that: the light collecting mirror is provided with a frosted surface or a fog surface.
6. Color temperature adjustable microscope illumination device according to claim 1, characterized in that: the color temperature of the LED light source is continuously adjusted within the range of 2700K-6500K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045406.6U CN209858839U (en) | 2019-07-05 | 2019-07-05 | Microscope lighting device with adjustable color temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045406.6U CN209858839U (en) | 2019-07-05 | 2019-07-05 | Microscope lighting device with adjustable color temperature |
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| CN209858839U true CN209858839U (en) | 2019-12-27 |
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| CN201921045406.6U Active CN209858839U (en) | 2019-07-05 | 2019-07-05 | Microscope lighting device with adjustable color temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161670A (en) * | 2019-07-05 | 2019-08-23 | 麦克奥迪实业集团有限公司 | A kind of microscope illumination system of adjustable color |
| CN113507763A (en) * | 2021-07-09 | 2021-10-15 | 漳州立达信光电子科技有限公司 | Color temperature adjusting method and system for LED light source |
-
2019
- 2019-07-05 CN CN201921045406.6U patent/CN209858839U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161670A (en) * | 2019-07-05 | 2019-08-23 | 麦克奥迪实业集团有限公司 | A kind of microscope illumination system of adjustable color |
| CN113507763A (en) * | 2021-07-09 | 2021-10-15 | 漳州立达信光电子科技有限公司 | Color temperature adjusting method and system for LED light source |
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