TW201734419A - Optical measurement device and method - Google Patents

Abstract

A optical measurement device includes a dividing unit, a filtering unit, a sensing unit, a spectrometer, and a processor. The dividing unit is configured to divide a light into a first light, a second light, and a third light. The filtering unit is configured to generate a first filtered light, a second filtered light, a third filtered light by filtering the first light, the second light, and the third light. The sensing unit is configured to generate a first sensing data, a second sensing data, and a sensing third data by sensing the first filtered light, the second filtered light, the third filtered light. The spectrometer is configured to generate a first color data based on the measured light. The processor is configured to calculate a second color data of the measured light, generate a calibration matrix based on the first color data and the second color data through the calibration matrix, calibrate the second color data, and output the calibrated color data.

Description

Optical measuring device and measuring method

The invention relates to an optical measuring device and a measuring method.

In the prior art, the color of the light source is generally measured using a densitometer, a colorimeter or a photometer. However, due to various factors such as external environmental factors or errors in the instrument itself, measuring the color by the above instruments often results in insufficient accuracy of the measurement results.

In view of the above, it is necessary to provide an optical measuring device and a measuring method to solve the above technical problems.

An optical measuring device for measuring a color of an active light source that emits light to be measured corresponding to a pixel, the optical measuring device comprising:

a light splitting unit, configured to receive the light to be measured, and decompose the received light to be measured into a corresponding first light, a corresponding second light, and a corresponding third light;

a filtering unit, configured to filter the first light, the second light, or the third light to generate the first filtered light, the second filtered light, and the third filtered light;

The photosensitive unit is configured to receive the first filtered light, the second filtered light, and the third filtered light to generate the first sensing data, the second sensing data, and the third sensing data.

a spectrometer for receiving the light to be measured and generating first color data of the light to be tested; and

a processing unit, configured to calculate second color data of the light to be tested according to the first sensing data, the second sensing data, and the third sensing data generated by the photosensitive unit, according to the first color data and the second The color data generates a calibration matrix, and the second color data is calibrated by the generated calibration matrix, and the calibrated color data is output.

An optical measuring method for measuring a color of an active light source that emits light to be measured corresponding to a pixel, the method comprising the steps of:

Receiving the light to be tested by a light splitting unit, and decomposing the received light to be measured into a corresponding first light, a corresponding second light, and a corresponding third light;

Filtering the first light, the second light, or the third light by a filtering unit to generate the first filtered light, the second filtered light, and the third filtered light;

Receiving, by the photosensitive unit, the first filtered light, the second filtered light, and the third filtered light to generate the first sensing data, the second sensing data, and the third sensing data;

Receiving the light to be tested by a spectrometer, and generating a first color data of the light to be tested;

Calculating a second color data of the light to be tested according to the first sensing data, the second sensing data and the third sensing data generated by the photosensitive unit;

Generating a calibration matrix according to the first color data and the second color data; and

The second color data is calibrated by the generated calibration matrix, and the calibrated color data is output.

The above optical measuring device and measuring method calibrate the result of measuring the color of the light source by a spectrometer, thereby effectively improving the accuracy of the measurement.

1 is a view showing an application structure of an optical measuring apparatus in a preferred embodiment of the present invention.

2 is a flow chart of an optical measurement method in a preferred embodiment of the present invention.

Please refer to FIG. 1, which is an optical measuring device 1 provided by the present invention. The optical measuring device 1 is used to measure the color of an active light source 2. The active light source 2 emits light to be measured corresponding to the pixel.

The optical measuring device 1 includes a first optical component 10, a second optical component 20, a light splitting unit 30, a filtering unit 40, a photosensitive unit 50, a spectrometer 60, and a processing unit 70.

The first optical element 10 and the second optical element 20 are disposed between the active light source 2 and the beam splitting unit 30. The first optical component 10 is configured to adjust a forward direction of the light to be detected, and guide the light to be detected to be transmitted from the active light source 2 to the second optical component 20. The second optical component 20 is configured to guide the light to be measured to the spectroscopic unit 30 and the spectrometer 60, respectively. In the present embodiment, the first optical element 10 is an optical lens or a multi-fiber bundle, and the second optical element 20 is a beam splitter.

The light splitting unit 30 receives the light to be measured, and decomposes the received light to be measured into a corresponding first light, a corresponding second light, and a corresponding third light. In this embodiment, the beam splitting unit 30 is a combination of an RGB beam splitting prism. Therefore, the beam splitting unit 30 can generate a first light having a red characteristic and a second having a blue characteristic after splitting the light to be detected. Light and a third light with green characteristics. In other embodiments, the first light may also have a blue characteristic or a green characteristic, and the second light may also have a red characteristic or a green characteristic, and the third light may also have a red characteristic or a blue characteristic.

The filtering unit 40 filters the first light, the second light, or the third light to generate the first filtered light, the second filtered light, and the third filtered light.

Specifically, the filtering unit 40 includes a first filter 41, a second filter 42, and a third filter 43. The first filter 41 is configured to filter the first light to generate a plurality of first filtered lights. The second filter 42 is configured to filter the second light to generate a second filtered light. The third filter 43 is configured to filter the third light to generate a third filtered light. In the present embodiment, the first filter 41, the second filter 42 and the third filter 43 are chromaticity diagram color correspondence function filters. It should be noted that when the filtering unit 40 filters the light, the relative speed and the relative angular velocity of the filtering unit 40 and the active light source 2 are both zero.

The photosensitive unit 50 senses the first filtered light, the second filtered light, and the third filtered light to generate first sensing data, second sensing data, and third sensing data.

Specifically, the photosensitive unit 50 includes a first photosensitive matrix 51, a second photosensitive matrix 52, and a third photosensitive matrix 53. The first photosensitive matrix 51 receives the first filtered light, and senses the received first filtered light, and generates a first sensing material; the second photosensitive matrix 52 receives the plurality of second filtered light, and Sensing the received second filtered light and generating second sensing data; the third photosensitive matrix 53 receives the third filtered light, and sensing the received third filtered light, and generating a plurality of third Sensing data. In this embodiment, the first sensing data, the second sensing data, and the third sensing data may each include a chromaticity, a color coordinate, a wavelength, a frequency spectrum, or other optical parameters. In the present embodiment, the first photosensitive matrix 51, the second photosensitive matrix 52, and the third photosensitive matrix 53 may each be arranged in a matrix by a plurality of photosensitive elements.

The spectrometer 60 receives the light to be measured and generates a first color data of the light to be measured. In the present embodiment, the optical measuring device 1 further includes a fiber optic connector 80. The fiber optic connector 80 is disposed between the second optical component 20 and the spectrometer 60 for guiding the light to be measured to be transmitted to the spectrometer 60 via the second optical component 20.

The processing unit 70 calculates the second color data of the light to be detected according to the first sensing data, the second sensing data and the third sensing data generated by the photosensitive unit 50.

The processing unit 70 further generates a calibration matrix according to the first color data and the second color data, and calibrates the second color data by using the generated calibration matrix, and outputs the calibrated color data.

In the present embodiment, the first color data is denoted as (X0, Y0, Z0), and the second color data is denoted as (X1, Y1, Z1). Thus, the calibration matrix is calculated by the following equations (1-1) to (1-3):

AX=X0/X1 (1-1)

AY=Y0/Y1 (1-2)

AZ=Z0/Z1 (1-3)

The calibrated color data (X2, Y2, Z2) is calculated by the following equations (2-1) to (2-3):

X2=X1*AX (2-1)

Y2=Y1*AY (2-2)

Z2=Z1*AZ (2-3)

In the present embodiment, the processing unit 70 is a processing wafer integrated in the optical measuring device 1 or a computer or other form of processing device connected to the optical measuring device 1.

Please refer to FIG. 2, which is a flow chart of the optical measurement method of the present invention.

S1, the light to be measured is received by a light splitting unit 30, and the received light to be measured is decomposed into a corresponding first light, a corresponding second light, and a corresponding third light.

S2, filtering, by the filtering unit 40, the first light, the second light, or the third light to generate the first filtered light, the second filtered light, and the third filtered light.

S3, the first filtered light, the second filtered light, and the third filtered light are sensed by a photosensitive unit 50 to generate first sensing data, second sensing data, and third sensing data.

S4, receiving a light to be measured by a spectrometer 60, and generating a first color data of the light to be measured.

S5. Calculate the second color data of the light to be tested according to the first sensing data, the second sensing data, and the third sensing data generated by the photosensitive unit 50.

S6. Generate a calibration matrix according to the first color data and the second color data.

S7, the second color data is calibrated by the generated calibration matrix, and the calibrated color data is output.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims.

1‧‧‧Optical measuring device

10‧‧‧First optical component

20‧‧‧Second optical component

30‧‧‧Distribution unit

40‧‧‧Filter unit

41‧‧‧First filter

42‧‧‧Second filter

43‧‧‧ Third filter

50‧‧‧Photosensitive unit

51‧‧‧First Photosensitive Matrix

52‧‧‧Second Sensitive Matrix

53‧‧‧ Third Photosensitive Matrix

60‧‧‧ Spectrometer

70‧‧‧Processing unit

80‧‧‧Fiber Optic Connectors

2‧‧‧Active light source

no

1‧‧‧Optical measuring device

10‧‧‧First optical component

20‧‧‧Second optical component

30‧‧‧Distribution unit

40‧‧‧Filter unit

41‧‧‧First filter

42‧‧‧Second filter

43‧‧‧ Third filter

50‧‧‧Photosensitive unit

51‧‧‧First Photosensitive Matrix

52‧‧‧Second Sensitive Matrix

53‧‧‧ Third Photosensitive Matrix

60‧‧‧ Spectrometer

70‧‧‧Processing unit

80‧‧‧Fiber Optic Connectors

2‧‧‧Active light source

Claims (10)

An optical measuring device for measuring a color of an active light source, the active light source emitting a light to be detected corresponding to a pixel, wherein the optical measuring device comprises:
a light splitting unit, configured to receive the light to be measured, and decompose the received light to be measured into a corresponding first light, a corresponding second light, and a corresponding third light;
a filtering unit, configured to filter the first light, the second light, or the third light to generate the first filtered light, the second filtered light, and the third filtered light;
a photosensitive unit, configured to sense the first filtered light, the second filtered light, and the third filtered light to generate the first sensing data, the second sensing data, and the third sensing data;
a spectrometer for receiving the light to be measured and generating a first color data of the light to be tested; and a processing unit, configured to: first sensing data, second sensing data, and third sensing generated by the photosensitive unit Calculating a second color data of the light to be detected, generating a calibration matrix according to the first color data and the second color data, and calibrating the second color data by using the generated calibration matrix, and outputting the calibration Color information. The optical measuring device of claim 1, wherein the filtering unit comprises:
a first filter, configured to filter the first light to generate a first filtered light;
a second filter for filtering the second light to generate a second filtered light; and a third filter for filtering the third light to generate a third filtered light. The optical measuring device of claim 1, wherein the photosensitive unit comprises:
a first photosensitive matrix for sensing the first filtered light and generating first sensing data;
a second photosensitive matrix for sensing the second filtered light and generating a second sensing material; and a third photosensitive matrix for sensing the third filtered light and generating a third sensing material. The optical measuring device of claim 1, wherein the optical measuring device further comprises a first optical component and a second optical component disposed between the active light source and the light splitting unit, the first optical component For adjusting the forward direction of the light to be tested, and guiding the light to be measured to be transmitted from the active light source to the second optical component, the second optical component is configured to guide the light to be tested to be transmitted to the light splitting unit and the light spectrometer. The optical measuring device of claim 4, wherein the first optical component is an optical lens or a multi-fiber bundle. The optical measuring device of claim 4, wherein the second optical component is a beam splitter. The optical measuring device of claim 4, wherein the optical measuring device further comprises a fiber optic connector disposed between the second optical component and the spectrometer for guiding the light to be tested via the first The two optical elements are transmitted to the spectrometer. An optical measuring method for measuring the color of an active light source that emits light to be measured corresponding to a pixel, the improvement comprising the following steps:
Receiving the light to be tested by a light splitting unit, and decomposing the received light to be measured into a corresponding first light, a corresponding second light, and a corresponding third light;
Filtering the first light, the second light, or the third light by a filtering unit to generate the first filtered light, the second filtered light, and the third filtered light;
Generating the first filtered light, the second filtered light, and the third filtered light by a photosensitive unit to generate the first sensing data, the second sensing data, and the third sensing data;
Receiving the light to be tested by a spectrometer, and generating a first color data of the light to be tested;
Calculating a second color data of the light to be tested according to the first sensing data, the second sensing data and the third sensing data generated by the photosensitive unit;
Generating a calibration matrix according to the first color data and the second color data; and calibrating the second color data by the generated calibration matrix, and outputting the calibrated color data. The optical measuring device of claim 8, wherein the method further comprises the steps of:
Adjusting a forward direction of the light to be measured by a first optical component and guiding the light to be detected to be transmitted from the active light source to a second optical component; and guiding the light to be tested to be respectively transmitted to the second optical component The spectroscopic unit and the spectrometer. The optical measuring device of claim 9, wherein the method further comprises the steps of:
The light to be measured is transmitted from the second optical component to the spectrometer by a fiber optic connector.