Color analyzer light path and method based on semi-transmission and semi-reflection

Abstract

The invention discloses a color analyzer light path and method based on semi-transmission and semi-reflection, and the light path comprises a light path which is specifically composed of a convex lens, a semi-transmission and semi-reflection mirror, a stimulus value optical filter, and a photoelectric conversion sensor. The number of the semi-transparent and semi-reflecting mirrors is two, the semi-transparent and semi-reflecting mirrors are divided into the first semi-transparent and semi-reflecting mirror and the second semi-transparent and semi-reflecting mirror, and the stimulus value optical filter is specifically a CIE1931 tristimulus value optical filter. According to the color analyzer light path and method based on semi-transmission and semi-reflection, the semi-transmission and semi-reflection mirror is used, single incident light is efficiently decomposed into multiple paths of light, and the light path structure is simplified. Through the design, the assembly complexity is reduced, and the generation efficiency can be improved; and the semi-transparent and semi-reflective mirror is adopted, so that the material cost and the processing cost can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of color analyzers, and in particular to a color analyzer optical path and method based on semi-transmission and semi-reflection. Background Art

[0002] A color analyzer is an industrial machine that can measure the brightness and chromaticity of LCD monitors and various other display devices at a speed of up to 20 times per second.

[0003] An instrument that uses photoelectric sensitive elements and electronic computing systems to perform color calibration and measurement. According to the different photosensitive bodies used, it can be divided into cadmium sulfide photosensitive body color analyzer, conductive color transfer multiplication analyzer, silicon sensor analyzer and other types. The basic structure can be divided into XYZ three stimulus value filters, spectroscopic devices, photoelectric converters and other parts. In addition, some analyzers also have light meters as accessories. According to the structure, it can be divided into two types: single-body projection analyzer and split optical axis analyzer.

[0004] The prior art has the following defects or problems:

[0005] Low light transmittance: Traditional light splitting through optical fiber has low light transmittance, low light transmission efficiency, and large light attenuation, resulting in weak electrical signals converted from photoelectricity, weak anti-interference ability, and low measurement accuracy;

[0006] High cost and difficulty in production: Fiber optic splitting devices are difficult to manufacture, and the assembly process is complex and time-consuming. It requires high professional skills from production employees, which is not conducive to improving work efficiency and reducing production costs. Summary of the invention

[0007] The purpose of the present invention is to provide a color analyzer optical path and method based on semi-transmission and semi-reflection to solve the problems raised in the background technology in view of the shortcomings of the prior art.

[0008] To achieve the above object, the present invention provides the following technical solution: a color analyzer optical path based on semi-transmission and semi-reflection, including an optical path, wherein the optical path specifically consists of a convex lens, a semi-transmission and semi-reflection mirror, a stimulus value filter and a photoelectric conversion sensor.

[0009] As a preferred technical solution of the present invention, the semi-transparent and semi-reflective mirrors are provided in two groups, and are divided into a first semi-transparent and semi-reflective mirror and a second semi-transparent and semi-reflective mirror, and the stimulus value filter is specifically a CIE1931 tristimulus value filter.

[0010] Another technical problem to be solved by the present invention is to provide a method for converting the light path of a color analyzer based on semi-transmission and semi-reflection, comprising the following steps:

[0011] Step 1: external incident light is gathered by the convex lens, and the gathered light is separated into a corresponding first group of reflected light and a first group of transmitted light through a first semi-transparent and semi-reflective mirror, and the first group of reflected light is passed through a Z stimulus value filter to generate a Z stimulus value;

[0012] Step 2: The first group of transmitted light passes through a second semi-transparent and semi-reflective mirror to separate the corresponding second group of reflected light and second group of transmitted light, the second group of reflected light passes through an X stimulus value filter to generate an X stimulus value, and the second group of transmitted light passes through a Y stimulus value filter to generate a Y stimulus value;

[0013] Step 3: The generated CIE XYZ tristimulus values ​​are respectively passed through the photoelectric conversion sensor;

[0014] Step 4: Convert the tristimulus light into an electrical signal that is proportional to the CIE XYZ tristimulus light for computer collection and analysis.

[0015] Compared with the prior art, the present invention provides a color analyzer optical path and method based on semi-transmission and semi-reflection, which has the following beneficial effects:

[0016] The invention discloses a color analyzer optical path and method based on semi-transparent and semi-reflective mirrors, which efficiently decompose a single incident light into multiple light paths and simplify the optical path structure. This design reduces the assembly complexity and is conducive to improving the generation efficiency; the use of semi-transparent and semi-reflective mirrors can effectively reduce the material cost and processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the optical path structure of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 In the first embodiment: a color analyzer optical path based on semi-transmission and semi-reflection includes an optical path, which specifically consists of a convex lens, a semi-transmission and semi-reflection mirror, a stimulus value filter and a photoelectric conversion sensor.

[0020] It should be noted that: there are two groups of semi-transparent and semi-reflective mirrors, which are divided into a first semi-transparent and semi-reflective mirror and a second semi-transparent and semi-reflective mirror, and the stimulus value filter is specifically a CI E1931 three-stimulus value filter.

[0021] Based on the above-mentioned semi-transmissive and semi-reflective color analyzer optical path, a conversion method of the semi-transmissive and semi-reflective color analyzer optical path is proposed: external incident light is gathered by a convex lens, and the gathered light passes through a first semi-transmissive and semi-reflective mirror to separate the corresponding first group of reflected light and first group of transmitted light, and the first group of reflected light passes through a Z stimulus value filter to generate a Z stimulus value; the first group of transmitted light passes through a second semi-transmissive and semi-reflective mirror to separate the corresponding second group of reflected light and second group of transmitted light, and the second group of reflected light passes through an X stimulus value filter to generate an X stimulus value, and the second group of transmitted light passes through a Y stimulus value filter to generate a Y stimulus value; the generated CIE XYZ tristimulus values ​​pass through a photoelectric conversion sensor respectively; the tristimulus value light is converted into an electrical signal that is proportional to the CI EXYZ tristimulus value light, so as to be collected and analyzed by a computer;

[0022] Assume that the incident light is A, and use a first semi-transparent and semi-reflective mirror with a transmittance of 66.6% to divide the incident light A into a first group of reflected light and a first group of transmitted light; wherein the first group of reflected light is 33.3% of the incident light A, that is, 33.3% A; the first group of transmitted light is 66.6% of the incident light A, that is, 66.6% A; the first group of transmitted light 66.6% A passes through a second semi-transparent and semi-reflective mirror with a transmittance of 50% to separate the corresponding second group of reflected light and second group of transmitted light; wherein the second group of reflected light is 50% of the first group of transmitted light, that is, 33.3% A; the second group of transmitted light is 50% of the first group of transmitted light, that is, 33.3% A.

[0023] See also Figure 1 In the second embodiment: a color analyzer optical path based on semi-transmission and semi-reflection includes an optical path, which specifically consists of a convex lens, a semi-transmission and semi-reflection mirror, a stimulus value filter and a photoelectric conversion sensor.

[0024] It should be noted that: there are two groups of semi-transparent and semi-reflective mirrors, which are divided into a first semi-transparent and semi-reflective mirror and a second semi-transparent and semi-reflective mirror, and the stimulus value filter is specifically a CI E1931 three-stimulus value filter.

[0025] Based on the above-mentioned semi-transmissive and semi-reflective color analyzer optical path, a conversion method of the semi-transmissive and semi-reflective color analyzer optical path is proposed: external incident light is gathered by a convex lens, and the gathered light passes through a first semi-transmissive and semi-reflective mirror to separate the corresponding first group of reflected light and first group of transmitted light, and the first group of reflected light passes through a Z stimulus value filter to generate a Z stimulus value; the first group of transmitted light passes through a second semi-transmissive and semi-reflective mirror to separate the corresponding second group of reflected light and second group of transmitted light, and the second group of reflected light passes through an X stimulus value filter to generate an X stimulus value, and the second group of transmitted light passes through a Y stimulus value filter to generate a Y stimulus value; the generated CIE XYZ tristimulus values ​​pass through a photoelectric conversion sensor respectively; the tristimulus value light is converted into an electrical signal that is proportional to the CI EXYZ tristimulus value light, so as to be collected and analyzed by a computer;

[0026] Assume that the incident light is B, and use a first semi-transparent and semi-reflective mirror with a transmittance of 50% to divide the incident light B into a first group of reflected light and a first group of transmitted light; wherein the first group of reflected light is 50% of the incident light B, that is, 50% B; the first group of transmitted light is 50% of the incident light B, that is, 50% B; the first group of transmitted light 50% B passes through a second semi-transparent and semi-reflective mirror with a transmittance of 50% to separate the corresponding second group of reflected light and second group of transmitted light; wherein the second group of reflected light is 50% of the first group of transmitted light, that is, 25% B; the second group of transmitted light is 50% of the first group of transmitted light, that is, 25% B.

[0027] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A color analyzer optical path based on semi-transmission and semi-reflection, characterized in that: The optical path comprises a convex lens, a semi-transparent and semi-reflective mirror, a stimulus value filter and a photoelectric conversion sensor.

2. The color analyzer optical path based on semi-transmission and semi-reflection according to claim 1, characterized in that: The semi-transparent and semi-reflective mirrors are provided in two groups, and are divided into a first semi-transparent and semi-reflective mirror and a second semi-transparent and semi-reflective mirror. The stimulus value filter is specifically a CIE1931 tristimulus value filter.

3. A method for converting the optical path of a color analyzer based on semi-transmission and semi-reflection, characterized in that: The steps include: Step 1: external incident light is gathered by the convex lens, and the gathered light is separated into a corresponding first group of reflected light and a first group of transmitted light through a first semi-transparent and semi-reflective mirror, and the first group of reflected light is passed through a Z stimulus value filter to generate a Z stimulus value; Step 2: The first group of transmitted light passes through a second semi-transparent and semi-reflective mirror to separate the corresponding second group of reflected light and second group of transmitted light, the second group of reflected light passes through an X stimulus value filter to generate an X stimulus value, and the second group of transmitted light passes through a Y stimulus value filter to generate a Y stimulus value; Step 3: The generated CIE XYZ tristimulus values ​​are respectively passed through the photoelectric conversion sensor; Step 4: Convert the tristimulus light into an electrical signal that is proportional to the CIE XYZ tristimulus light for computer collection and analysis.

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