KR20140003664A - Color difference meter module having collimator lens and focusing lens and device of color meter using the same - Google Patents

Abstract

The present invention provides a color meter using a color difference meter module having a collimator lens and a condensing lens. The color meter includes: a case in which a light receiving space is prepared; a light entering lens module which includes multiple lenses arranged serially from one side of the case to the inside of the case, is placed on an area where light from a measurement target enters, and delivers the light to the inside; and a color difference meter module. The color difference meter module includes: a color filter which is installed in the light receiving space, receives light passing through the light entering lens module, and passes light of a certain wavelength only; a photodiode which receives the light passing through the color filter and converts the received light into an electrical signal; a collimator lens which is placed on a light path between the light entering lens module and the color filter, passes the light passing through the light entering lens module in parallel and delivers the light to the color filter; and a condensing lens which condenses the light passing through the color filter between the color filter and the photodiode and delivers the condensed light to the photodiode.

Description

Color Difference Meter Module Having Collimator Lens and Focusing Lens and Device of Color Meter Using The Same}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a color meter, and a color difference meter module including a collimator lens and a condenser lens for measuring a characteristic of a color of a color display panel, and a color meter using the same. .

The global monitor market is rapidly changing from CRT to LCD monitors and from LCD to LED monitors. In particular, as the demand for large-sized LED monitors increases, production volume increases rapidly.

As the output of such displays increases, production quality also acts as one of the important factors, and devices for determining whether there is a defect have been developed. In particular, color difference meters have been developed to measure whether the colors represented on displays such as LCDs and LEDs actually represent the colors to be printed.

A conventionally developed color difference meter will be described with reference to FIGS. 1 and 2 as follows.

1 is a view schematically showing the configuration of a color measuring instrument used in the prior art, and FIG. 2 is a view schematically showing the configuration of another type of color measuring instrument used in the related art.

First, referring to FIG. 1, a schematic configuration of a conventionally developed color difference meter includes a light transmission unit 10 and a light transmission unit 10 configured to receive and transmit light emitted from a light source. It consists of a color filter 20 for transmitting only light of a specific wavelength and a photodiode 30 for detecting the light transmitted by the color filter 20 and converting it into an electrical signal.

The color filter 20 transmits the light emitted from the light source and transmits only the light having a specific wavelength to the photodiode 30. The photodiode 30, which receives the light transmitted from the color filter 20, senses the intensity of the transmitted light and converts it into an electrical signal to transmit to the outside.

Here, the light transmitted from the light transmission unit 10 is transmitted to the color filter 20 in a form that spreads widely. However, since the color filter 20 cannot receive all of the light emitted from the light transmission unit 10, the loss of light increases, and thus the sensitivity of the light transmitted to the photodiode 30 is inferior. .

In particular, when the brightness of the light emitted from the light source is high, it is not a big problem. However, when the brightness is low, the sensitivity of the light transmitted to the photodiode 30 decreases, making it difficult to detect color.

Referring to FIG. 2, another form of the color difference meter used in the related art is similar to the above-described configuration, but further includes a separate condenser lens 40 between the light transmission unit 10 and the color filter 20. .

Since the condenser lens 40 is further provided, the light transmitted from the light transmitting unit 10 is condensed by the condenser lens 40 and then transmitted to the color filter 20.

When the condenser lens 40 is provided as described above, the light transmitted from the light transmitting unit 10 is collected by the condenser lens 40 to be transferred to the color filter 20. Can reduce the sensitivity.

However, such a configuration reduces the loss of light while increasing the incident angle of the light transmitted to the color filter 20, thereby shifting the wavelength of the incident light and thus the accuracy of the light measured by the photodiode 30. There was a falling issue.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional color measuring instrument, and includes a separate collimator lens and a condenser lens therein, and includes a collimator lens and a condenser lens which increase accuracy while reducing luminance. The present invention provides a color difference module and a color measurement device using the same.

In order to solve the above problems, a color measuring device according to an aspect of the present invention, a case in which a light receiving space is formed therein, a plurality of lenses are continuously arranged in an inner direction from one side of the case, the light is measured in the object A light receiving lens module disposed in the output area and transmitting the emitted light to the inside; and a color filter disposed in the light receiving space and passing through the light receiving lens module to transmit only light having a specific wavelength, and transmitted by the color filter. A photodiode that receives the received light and converts the received light into an electrical signal, and is provided on a path along which the light travels between the incident lens module and the color filter and emits light passing through the incident lens module in parallel; A collimator lens for transferring to a color filter, and the curl between the color filter and the photodiode And a color difference module including a condenser lens for condensing the light transmitted by the color filter to the photodiode.

In addition, the color difference module may be provided with at least three or more so that the color filters transmit light having different wavelengths, respectively.

The light distribution module may further include a light distribution module provided between the light incident lens module and the color difference module to distribute the light incident from the light incident lens module to the color difference module.

Here, the light distribution module may be composed of a plurality of optical fibers to transmit the light transmitted from the incident lens module to the color difference module.

In addition, the color filter may be configured as an interference filter.

The collimator lens may be formed to direct all light incident from the incident lens module in parallel, and the color filter may be configured to receive all the light emitted from the collimator lens.

In addition, the condensing lens may be formed to receive and condense all the light transmitted by the color filter.

In order to solve the above problems, a color difference module according to another aspect of the present invention, a color filter for receiving light transmitted from the outside to transmit only light of a specific wavelength, the light received by receiving the light transmitted by the color filter A photodiode for converting the light into an electrical signal, and a collimator lens provided on a path through which light travels between the light receiving lens module and the color filter and outputting light passing through the light receiving lens module in parallel to the color filter. And a condenser lens for condensing the light transmitted by the color filter between the color filter and the photodiode and transferring the light to the photodiode.

The collimator lens may be formed to direct all light incident from the incident lens module in parallel, and the color filter may be configured to receive all the light emitted from the collimator lens.

In addition, the condensing lens may be formed to receive and condense all the light transmitted by the color filter.

In order to solve the above problems, the present invention has the following effects.

It has a collimator lens that refracts the light transmitted on the movement path of the light incident on the color measuring instrument to have directivity in a certain direction so that the light incident on the interference filter type color filter is incident close to the vertical direction. It is possible to increase the precision by preventing the wavelength of light from being shifted. At the same time, the light passing through the color filter is disposed on the moving path to collect and transfer the moving light to the photodiode, thereby increasing the luminance of the light incident on the photodiode to more accurately and quickly measure the color of the measured light. There is an effect that can be measured easily.

1 is a view schematically showing the configuration of a color measuring instrument used in the prior art;
2 is a view schematically showing the configuration of another type of color measuring instrument used in the prior art;
3 is a view showing a state using a color gauge according to an embodiment of the present invention;
4 is a diagram schematically showing the configuration of the color gauge of FIG.
FIG. 5 is a view schematically showing an internal configuration of the color gauge of FIG. 3; FIG.
6 is a diagram illustrating a configuration of a color difference module in the color gauge of FIG. 3;
FIG. 7 is a graph illustrating trichromatic stimulus values measured by a photodiode in a state in which the colorimeter module of FIG. 3 is not provided with a collimator lens; FIG.
FIG. 8 is a graph illustrating tri-color stimulus values measured by a photodiode in a state where a collimator lens is provided in the color difference module of FIG. 3; FIG.
9 is a graph showing a spectrum applied for measuring the accuracy of the tricolor stimulus values measured in FIGS. 7 and 8; And
FIG. 10 is a view illustrating a difference in intensity of light measured by a photodiode according to the presence of a condenser lens in the color difference module of FIG. 3.

Preferred embodiments of the color difference module including the collimator lens and the condenser lens and the color gauge using the same according to the present invention configured as described above will be described with reference to the accompanying drawings. However, it is not intended to limit the invention to any particular form but to facilitate a more thorough understanding of the present invention.

In the following description of the present embodiment, the same components are denoted by the same reference numerals and symbols, and further description thereof will be omitted.

First, referring to FIG. 3 to FIG. 5, the color measuring apparatus according to the embodiment of the present invention will be described.

3 is a view showing a state using a color gauge according to an embodiment of the present invention, Figure 4 is a view showing the configuration of the color gauge of Figure 3 and Figure 5 schematically shows the internal configuration of the color meter of Figure 3 The figure shown.

As shown, the configuration of the color meter 100 according to the embodiment of the present invention is largely composed of a case 200, a light incident lens module 300, a color difference module 400, and a light distribution module 500.

The case 200 surrounds the whole, and a light receiving space is formed therein, and the light incident lens module 300 is disposed at one side. In the present embodiment, the case 200 is composed of an outer case 210 and a barrel 220 coupled in a form in which at least a portion of the outer case 210 is inserted into the inner case 210. Located on one side of the barrel 220.

The incident lens module 300 is disposed in a region where light is emitted from the measurement object D at one side of the case 200 to transmit the emitted light to the inside.

Here, the light incident lens module 300 is formed in a form in which a plurality of different lenses are continuously arranged as shown in Figure 5, by condensing the light emitted from the measurement object (D) the case 200 Pass it inside.

The color difference module 400 detects the light incident from the incident lens module 300 and measures the color of light having a corresponding wavelength. The color filter module 410, the photodiode 420, and the collimator lens are largely measured. 430 and a condenser lens 440.

The color filter 410 receives light transmitted from the incident lens module 300 and transmits only light having a specific wavelength. In this case, the color filter 410 may be a filter of various types and structures, and the interference filter is used in the present embodiment.

An interference filter is a filter that filters out waves of a specific wavelength by using interference phenomena on a thin film. It is divided into several types according to the method of obtaining the desired wave and the type of filter material.

The photodiode 420 is a kind of sensor that receives light and converts it into an electrical signal. The photodiode 420 receives light transmitted by the color filter 410 and converts the received light into an electrical signal. The electrical signal received in this way is used to measure the color of the light received by a separate measurement system (not shown) provided externally.

The collimator lens 430 is provided on a path through which light travels between the incident lens module 300 and the color filter 410 and emits light that passes through the incident lens module 300 in parallel. Transfer to the color filter 410. Here, the collimator lens 430 may be composed of one lens or a plurality of lens groups.

Light passing through the incident lens module 300 is refracted through the collimator lens 430 and is incident on the color filter 410. Here, the collimator lens 430 is refracted so that the light transmitted from the incident lens module 300 has a directivity to emit light in parallel in one direction to transfer to the color filter 410.

The condenser lens 440 refracts light when light having a specific wavelength emitted by the color filter 410 is transmitted between the color filter 410 and the photodiode 420 to the photodiode 420. After condensing, the light is delivered to the photodiode 420.

As described above, the color difference module 400 is provided inside the case 200 to detect a color of light having a specific wavelength among the light incident through the incident lens module 300.

On the other hand, in the present embodiment, the color difference module 400 is composed of at least three modules. When the color difference module 400 is separated from each other independently in the case 200 and constitutes at least three or more, each of the color filters 410 is configured to transmit light having different wavelengths. In general, the color difference module 400 measures color using a three-color stimulus value by a standard observer defined by the Commission International de l'Eclairage (CIE).

The tricolor stimulus value is a value representing the color of light that is recognized through three cone cells that detect light of different wavelengths in the human eye and is a reference value for expressing light.

Therefore, in order to accurately measure each tricolor stimulus value, three colors of stimulation values of X, Y, and Z are separated from each other and the color is measured through the photodiode 420.

As described above, in order to measure the color of light for each of the three color stimulus values, each of the color filters 410 is configured to transmit only light having a different wavelength for each of the three color stimulus values.

The light distribution module 500 is provided between the light incident lens module 300 and the color difference module 400 to distribute light incident from the light incident lens module 300 to the color difference module 400. To pass.

In this case, the light distribution module 500 distributes the light having the same wavelength and intensity as the incident light to each of the color difference module 400, and each of the color difference module 400 is separated from the light distribution module 500. It receives the transmitted light and measures the color of light of different wavelengths.

In the present embodiment, the light distribution module 500 includes a plurality of optical fibers 510, and the optical fiber 510 transmits the light received through the light incident lens module 300 to the optical fiber 510. A light transmitting unit 520 is provided.

The light transmitting unit 520 receives the light incident through the incident lens module 300 and transmits the light to the plurality of optical fibers 510. In this case, since the light transmitting unit 520 is generally formed smaller than the incident lens module 300, the incident lens module 300 is incident to receive all the light transmitted from the incident lens module 300. The light is refracted and transferred to the light transmitting unit 520.

The optical fiber 510 is composed of a plurality of arranged in the same direction and one side is densely arranged to each other connected to the light transmission unit 520 and the light received through the light transmission unit 520 to the optical fiber 510 Delivered. The other side of the plurality of optical fibers 510 is largely divided into three groups, each group consisting of the same size and number of optical fibers 510 and connected to each of the color difference module 400.

In the present embodiment, the plurality of optical fibers 510 are all configured with the same size, and the other side is divided into three groups, and each group is made of the same number.

Thus, each of the other sides of the optical fiber 510 having the same size and the same number is connected to each of the color difference module 400, so that the light incident from the light incident lens module 300 is uniformly provided to each of the color difference module 400. Is passed on.

In this embodiment, the optical fibers 510 are all made of the same size, so that the light transmitted to each of the color difference module 400 has the same wavelength and intensity if the other side is divided into three groups and maintains the same number. Can have However, it is not particularly limited to this form. Even if each of the optical fibers 510 has a different size, any configuration may be applied as long as the optical fibers 510 are configured to transmit light having the same wavelength and intensity to each of the color difference module 400.

As such, the light distribution module 500 evenly transmits the light received between the light incident lens module 300 and the color difference module 400 to each of the color difference module 400.

On the other hand, the color distribution module 500 and the color difference module 400 and the light distribution module 500 because not only reduces the light lost by using the optical fiber 510, but also has a feature that can be flexibly flexed. ) Do not have to be in a straight line, increasing the utilization of space.

The color measuring device 100 configured as described above is formed such that a part of the barrel 220 protrudes from one side of the outer case 210, and the light distribution module 500 and the color difference module 400 are connected to the barrel ( 220 is continuously arranged inside.

On the other hand, the color measuring device 100 configured as described above is disposed so that the light incident lens module 300 is located in the area where the light is emitted from one side of the measurement object (D) as shown in FIG. 100) Let light enter the inside. Here, as shown, the color measuring instrument 100 may be mounted and used at a specific position, but may be configured to be used at a desired position by carrying it separately without special mounting.

Next, the configuration of the color difference module 400 will be described in more detail with reference to FIG. 6.

6 is a diagram illustrating a configuration of the color difference module 400 in the color meter 100 of FIG. 3.

As shown in FIG. 6, the collimator lens 430, the color filter 410, the condenser lens 440, and the light of the light transmitted from the light distribution module 500 in the color difference module 400. The photodiode 420 moves in order to measure the color of light.

Looking at the moving configuration of the light transmitted by the light distribution module 500 as a whole, first, the light transmitted from the light distribution module 500 is transmitted to the collimator lens 430. Here, the light emitted from the optical fiber 510 is spread widely. Thus, the collimator lens 430 should be disposed close enough or formed large enough to receive all the light emitted from the optical fiber 510.

As described above, the collimator lens 430 refracts the light transmitted from the optical fiber 510 and transmits the light to the color filter 410. Light passing through the collimator lens 430 is generally directed and emitted in parallel. By using this feature, the incident angle of light transmitted to the color filter 410 may be adjusted.

The color filter 410 disposed on a movement path of light transmitted through the collimator lens 430 transmits only light having a specific wavelength. However, the accuracy is changed according to the angle of incidence of the light incident on the color filter 410, thereby causing the phenomenon that the wavelength of the transmitted light is shifted. Thus, the color filter 410 is disposed such that light transmitted from the collimator lens 430 is incident on the color filter 410 vertically. Of course, if the light transmitted from the collimator lens 430 is incident on the color filter 410 with an angle of incidence close to the vertical rather than incident on the color filter 410, the wavelength of the transmitted light may be minimized.

In addition, the amount of light lost by changing the direction of light transmitted through the optical fiber 510 by the collimator lens 430 may be minimized and transmitted to the color filter 410.

Light incident on the color filter 410 by the collimator lens 430 transmits only light having a specific wavelength. In this case, each of the three color filters 410 is configured to transmit different wavelengths, and in this embodiment, transmits light having a wavelength corresponding to each of the RGB colors.

As such, light having a specific wavelength transmitted by the color filter 410 is transmitted to the condenser lens 440. The condenser lens 440 may be in the form of a general convex lens. The condenser lens 440 collects light by refracting the light transmitted by the color filter 410 and transmits the condenser lens 420 to the photodiode 420.

Here, although the light transmitted from the color filter 410 is directly transmitted to the photodiode 420, it can be sensed to measure the color of the light transmitted from the photodiode 420, but in this case the transmitted light When the luminance is low, the photodiode 420 has a problem that it is difficult to accurately measure.

Therefore, the light passing through the color filter 410 is collected by the condensing lens 440, so that even in the case of light having low brightness, the brightness is increased and the photodiode 420 can accurately measure the light.

Each of the color difference module 400 configured as described above detects colors for light having different wavelengths and converts them into electrical signals.

Next, referring to FIGS. 7 and 8, the change in the tricolor stimulus value detected by the photodiode 420 according to the presence or absence of the collimator lens 430 in the color difference module 400 will be described as follows. .

FIG. 7 is a graph showing three-color stimulus values measured by the photodiode 420 in a state in which the colorimeter module 400 of FIG. 3 is not provided with the collimator lens 430. FIG. 400 is a graph showing tricolor stimulation values measured by the photodiode 420 in the state where the collimator lens 430 is provided.

First, the graph shown outputs only light of a specific wavelength by using a monochromator (not shown). In addition, the color difference module 400 that receives the light output by the monochromator measures the value of each channel (X, Y, Z) through the photodiode 420.

These graphs show the results measured on the photodiode 420 by moving the diffraction element of the monochromator, and the x-axis (horizontal axis) is the wavelength and the y-axis (vertical) is the light. It shows the strength of.

In the illustrated graph, the dotted line indicates the target graph, which shows the wavelength and intensity corresponding to the actual tricolor stimulus value, and the solid line indicates the light detected using the color difference module 400. The graph shows the wavelength and intensity corresponding to the tricolor stimulus.

Referring to FIG. 7, when the color difference module 400 does not include the collimator lens 430, the phases of the two graphs are different from each other as in the graph shown in FIG.

As described above, each tricolor stimulus value detected by the photodiode 420 of the color difference module 400 is different from the phase of the actual tricolor stimulus value as a reference. When the three-color stimulus value measured by the photodiode 420 is different from the actual three-color stimulus value as a reference, the color difference module 400 is difficult to accurately measure the color of the light emitted from the display module. Occurs.

In order to solve this problem, as shown in FIG. 8, since the colorimeter module 400 includes the separate collimator lens 430, each of the three-color stimulus values measured by the photodiode 420 has a reference value. It can be seen that the measurement is very close to the actual tricolor stimulus value.

That is, since the color filter module 410 includes the collimator lens 430, light incident on the color filter 410 is incident vertically, so that only the light having a wavelength that matches the wavelength set by the color filter 410 is provided. Permeable. Accordingly, as the color filter 410 transmits light precisely, the accuracy of the tricolor stimulus value measured by the photodiode 420 increases.

Next, referring to FIG. 9, the difference in tricolor stimulus values measured according to the presence or absence of the collimator lens 430 is as follows.

FIG. 9 is a graph illustrating a spectrum applied for measuring the accuracy of the tricolor stimulus values measured in FIGS. 7 and 8.

The three-color stimulus value measured by the photodiode 420 is converted into xy color coordinates using X, Y, and Z by a CIE colorimeter, and the difference between the x value and the y value according to the presence or absence of the collimator lens 430. Was compared.

First, a method of obtaining each of X, Y, and Z numerically representing tricolor stimulus values is shown in Equation 1.

는 도 9에 도시된 스팩트럼의 값으로 본 실시예에서는 OLED 휴대폰의 스팩트럼을 이용한다. 본 실시예서

는 휴대폰 OLED의 값을 사용하였지만, 이는 빛을 발광하는 전자제품마다 그 특징이 다르기 때문에 적용 대상에 따라 변경될 수 있다.In Equation (1)

9 is a value of the spectrum shown in FIG. 9 and in this embodiment, the spectrum of the OLED cellular phone is used. Example

Although the value of the cell phone OLED is used, this may be changed according to the application target because the characteristics of the electronic devices that emit light are different.

,

,

각각은 상기 포토다이오드(420)에서 검출된 삼색 자극값을 나타낸 것이다. 그래서 수학식 1에 의해 X, Y, Z 값을 각각 구할 수 있다. And

,

,

Each represents the tricolor stimulus values detected by the photodiode 420. Therefore, X, Y, and Z values can be obtained by Equation 1, respectively.

By using the X, Y, and Z values thus obtained, xy can be obtained through Equation 2 below. Equation 2 is as follows.

In this way, each of X, Y, and Z derived by Equation 1 may be applied to Equation 2 to derive x and y values.

Through this process, X, Y, and Z of the trichromatic stimulus values as reference can be obtained, and then x, y can be obtained.

Therefore, x and y of the tricolor stimulus values as reference are based on the x and y values detected by the equations (1) and (2).

In addition, each of the three color stimulus values detected by the photodiode 420 according to the presence or absence of the collimator lens 430 in the color difference module 400 is represented by the equations 1 and 2, respectively. It detects and compares it with x and y of the tricolor stimulus value used as a reference.

Table 1 shows a result of comparing x and y of tricolor stimulus values as reference and x and y of tricolor stimulus values detected by the photodiode 420.

As shown, x is a result of comparing the x, y values detected using the colorimeter module 400 without the collimator lens 430 and the x, y values of the trichromatic stimulus values as reference. There is a difference of 0.003 and y of 0.016.

However, x and y of the result measured by the photodiode 420 using the color difference module 400 including the collimator lens 430 are different from x and y of trichromatic stimulus values as reference. X is 0.003 and y is 0.005. It can be seen that the difference is significantly reduced.

In this way, the incidence angle of the light incident on the color filter 410 is provided with the collimator lens 430 so that the three-color stimulus value measured by the photodiode 420 is a reference value to the three-color stimulus value. The result may be approaching, and thus the precision of the color difference module 400 is increased.

Next, referring to FIG. 10, the three-color stimulus value measured by the photodiode 420 according to the presence or absence of the condenser lens 440 will be described.

FIG. 10 is a view illustrating a difference in intensity of light measured by the photodiode 420 according to the presence of the condenser lens 440 in the color difference module 400 of FIG. 3.

Looking at the graph shown, the color difference module 400 shows the tri-color stimulus value measured by the photodiode 420 in the state that is not provided with the condensing lens 440, respectively. First, when the condenser lens 440 is not provided, the intensity of each of the three color stimulus values measured by the photodiode 420 is lower than that of the three color stimulus values, which are all reference values, as shown in the graph. Since the amount of light incident on the photodiode 420 is reduced, its intensity is weakened, and thus, the color difference module 400 takes a long time to accurately measure the color of the incident light.

However, when the color difference module 400 includes the condensing lens 440, each of the three color stimulus values measured by the photodiode 420 is detected to be close to the intensity of the tricolor stimulus value, which is a reference. do. This allows all of the light transmitted from the color filter 410 to be incident on the photodiode 420 using the condenser lens 440, so that the color of light incident on the photodiode 420 can be measured more accurately and quickly. Make this possible.

As described above, the present invention has been described with respect to preferred embodiments thereof, and it can be embodied in other forms without departing from the spirit or scope of the present invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the foregoing description, but may be modified within the scope and equivalence of the appended claims.

100: color measurement instrument 200: case
300: light incident lens module 400: color difference module
410: color filter 420: photodiode
430: collimator lens 440: condenser lens
500: optical distribution module

Claims (10)

A case having a light receiving space formed therein;
A light incident lens module configured to continuously arrange a plurality of lenses in an inner direction from one side of the case, the light incident lens module disposed in a region where light is emitted from a measurement object and transferring the emitted light to the inside; And
A color filter disposed in the light receiving space and transmitting light passing through the light receiving lens module to transmit only light having a specific wavelength, a photodiode receiving light transmitted by the color filter and converting the received light into an electrical signal; A collimator lens which is provided on a path in which light travels between the light receiving lens module and the color filter and outputs light passing through the light receiving lens module in parallel to the color filter, and between the color filter and the photodiode. A color difference module comprising a condenser lens for condensing the light transmitted by the color filter to the photodiode;
Color measuring instrument using a color difference module comprising a. The method of claim 1,
The color difference module,
Color measuring device using a color difference module, characterized in that provided with at least three or more color filters transmit light of different wavelengths. 3. The method of claim 2,
A color measuring device further includes a light distribution module provided between the light incident lens module and the color difference module to distribute light incident from the light incident lens module to the color difference module. . The method of claim 3, wherein
The optical distribution module,
Color measuring device using a color difference module consisting of a plurality of optical fibers to transmit the light transmitted from the light receiving lens module to the color difference module. The method of claim 1,
The color filter,
Color measuring instrument using a color difference module, characterized in that consisting of the interference filter. The method of claim 1,
The collimator lens is formed to direct all light incident from the light incident lens module in parallel,
The color filter is a color measuring instrument using a color difference module, characterized in that formed to receive all the light emitted from the collimator lens. The method of claim 1,
The condenser lens,
Color measuring device using a color difference module, characterized in that formed to receive and collect all the light transmitted by the color filter. A color filter which receives light transmitted from the outside and transmits only light having a specific wavelength;
A photodiode receiving the light transmitted by the color filter and converting the received light into an electrical signal;
A collimator lens provided on a path through which light travels between the light incident lens module and the color filter and outputting light passing through the light incident lens module in parallel to the color filter; And
A condenser lens for condensing the light transmitted by the color filter between the color filter and the photodiode and transferring the light to the photodiode;
Color difference module comprising a. The method of claim 8,
The collimator lens is formed to direct all light incident from the light incident lens module in parallel,
The color filter module, characterized in that formed to receive all the light emitted from the collimator lens. The method of claim 8,
The condenser lens,
Color difference module, characterized in that formed to receive and collect all the light transmitted by the color filter.

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