A definition test card and test method of an eye-protecting desk lamp

Abstract

The present application relates to the technical field of lamps, more specifically, it relates to a kind of eye protection desk lamp definition test card and test method, eye protection desk lamp definition test card technical scheme main points are, including: the definition test card of single light source of limited specification and the definition test card of multiple light sources, on the light transmission surface material selected as high-transmittance PE material, with regularly changing test pattern, test pattern is illuminated and presents the change of completeness and definition, compared with prior art, the definition test card of eye protection desk lamp and the definition test card test method is for the detection device of eye protection desk lamp, corresponding standard is formulated, to test whether eye protection desk lamp meets eye protection requirements.

Description

Technical Field

[0001] This invention relates to the technical field of desk lamps, and more specifically, to a clarity test card and test method for an eye-protection desk lamp. Background Technology

[0002] There are many models of desk lamps on the market, with significant differences. Among them, the design for eye health is crucial. The illuminance and uniformity of a desk lamp not only affect the quality of lighting but also relate to eye strain during reading. Insufficient or uneven illuminance can affect visual clarity and comfort, while excessively high or low illuminance can lead to eye fatigue.

[0003] Currently, there are no national standards for the sharpness of desk lamps, and existing sharpness testing methods mainly target displays, cameras, and visible light. A standardized sharpness testing method is lacking for eye-training desk lamps. The current desk lamp market typically provides a sharpness test chart that assesses sharpness based on the smallest visually recognizable light and shadow pattern. However, this is usually not specifically designed for eye-training desk lamps. Different test chart patterns, inconsistent placement heights, and environmental variables can all lead to inaccurate sharpness assessments. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a clarity test card and test method for an eye-protection desk lamp.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a clarity test card for an eye-protecting desk lamp, characterized in that it includes a single-light source clarity test card and a multi-light source clarity test card.

[0006] The single-light source sharpness test chart measures 210mm*140mm, and the penumbra threshold range is set to 0.1mm to 0.5mm.

[0007] The dimensions of the multi-light source sharpness test chart are 220mm*326mm, and the penumbra threshold range is set to 0.5mm to 20mm;

[0008] The edge bleed size of both the single-light source clarity test chart and the multi-light source clarity test chart is 13mm*13mm.

[0009] In one embodiment, the light-transmitting surface material of the single-light source clarity test card and the multi-light source clarity test card is selected as high-transmittance PE material.

[0010] In one embodiment, both the single-light source sharpness test card and the multi-light source sharpness test card are provided with test patterns, which are continuously arranged graphics.

[0011] In one embodiment, the graphic is a line or a dot.

[0012] In one embodiment, in the single-light source sharpness test chart, the penumbra threshold of the widest line is the same as the maximum value of the penumbra threshold range of the single-light source sharpness test chart, and the penumbra threshold of the narrowest line is the same as the minimum value of the penumbra threshold range of the single-light source sharpness test chart.

[0013] In one embodiment, in the multi-light source sharpness test chart, the penumbra threshold of the widest line is the same as the maximum value of the penumbra threshold range of the multi-light source sharpness test chart, and the penumbra threshold of the narrowest line is the same as the minimum value of the penumbra threshold range of the multi-light source sharpness test chart.

[0014] In one embodiment, the line widths in the test pattern decrease sequentially in the horizontal direction.

[0015] The testing method for the above-mentioned resolution test card includes the following steps:

[0016] S1. Use a sharpness test card and place it directly below the light-emitting surface of the desk lamp, with a distance of 30mm or 20mm between the card and the light-emitting surface of the desk lamp.

[0017] S2. When the clarity test card is illuminated by the light-emitting surface of the desk lamp, it presents multiple test patterns. The test patterns have scale values. The integrity and clarity of the test patterns are affected by the illumination of the light-emitting surface of the desk lamp.

[0018] S3. Use the naked eye to observe the clarity test card, find the test pattern with the lowest completeness and clarity among the test patterns that can be seen by the naked eye, and record the scale value at the test pattern.

[0019] S4. Determine whether the image is clearly presented.

[0020] The above-mentioned clarity test card and test method for an eye-protection desk lamp have the following beneficial effects:

[0021] Firstly, regarding standardized sharpness testing, this invention provides a standardized sharpness testing method specifically designed for eye accommodation training lamps, which is more professional in judging eye protection standards. This standardized method can ensure that desk lamps of different brands and models can undergo the same test so as to conduct comparable sharpness assessments. The testing method is simple, the preparation conditions are easy, and the observation and comparison are obvious.

[0022] Secondly, regarding the observation height, the test card and the 30mm and 20mm observation height settings of this invention are designed specifically for eye-protection desk lamps, simulating the observation conditions users encounter when actually using the lamp, thus ensuring the authenticity of the test. Users conducting tests under these observation conditions can better evaluate the performance of the eye-protection desk lamp in real-world use.

[0023] Thirdly, regarding the clarity threshold standard, by adopting test patterns and single-light source clarity test cards, as well as setting penumbra thresholds, the testing method of this invention can provide accurate clarity assessment. When the user is at the observation height of this invention, the desk lamp light provides sufficient clarity so that the smallest line can be just seen, thereby judging the eye protection function of the eye-protecting desk lamp. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the single-light source sharpness test card in this embodiment;

[0025] Figure 2 This is a schematic diagram of the multi-light source sharpness test card in this embodiment;

[0026] Figure 3 This embodiment shows a schematic diagram of the penumbra range of the pattern on the single-light source sharpness test card.

[0027] Figure 4 This embodiment shows a schematic diagram of the penumbra range of the pattern on the multi-light source sharpness test card. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] A clarity test card for an eye-protection desk lamp, such as Figure 1 and Figure 2 As shown, it includes a single-light source sharpness test card and a multi-light source sharpness test card;

[0034] like Figure 1 As shown, the dimensions of the single-light source sharpness test chart are 210mm*140mm, and the penumbra threshold range is set to 0.1mm to 0.5mm;

[0035] like Figure 2 As shown, the dimensions of the multi-light source sharpness test chart are 220mm*326mm, and the penumbra threshold range is set to 0.5mm to 20mm;

[0036] like Figure 1 and Figure 2 As shown, the edge bleed size of both the single-light source sharpness test chart and the multi-light source sharpness test chart is 13mm*13mm;

[0037] Based on the above design, in one embodiment, the advantage is that the size is set to 210mm*140mm or 220mm*326mm, which has a good visual effect and is a suitable size, making it convenient to design and lay out the test pattern on the clarity test card.

[0038] Considering the differences in human vision and the existence of single and multiple light sources, a penumbra threshold range of 0.1mm to 0.5mm was set in the case of a single light source, and a penumbra threshold range of 0.5mm to 20mm was set in the case of multiple light sources. These two different penumbra threshold ranges can make a judgment on sharpness under different light source illumination.

[0039] The edge bleed size of the single-light source clarity test card and the multi-light source clarity test card is set at 13mm*13mm, which makes the bleed size relatively large and provides more tolerance in the manufacturing process of the clarity test card;

[0040] In other embodiments, the single-light source sharpness test chart and the multi-light source sharpness test chart can be of other scales or other scales of edge bleed size, that is, as long as they can meet the requirements of production and use.

[0041] Specifically, the light-transmitting surface material of the single-light source clarity test card and the multi-light source clarity test card is selected as high-transmittance PE material.

[0042] With the above design, in one embodiment, the advantage is that the high-transparency PE material allows the light from the eye-protection desk lamp to enter the light-transmitting surface of the single-light source clarity test card and the multi-light source clarity test card normally, thereby producing a penumbra in the test pattern, and then judging whether the eye-protection desk lamp can clearly present the image by the corresponding penumbra threshold.

[0043] Specifically, such as Figure 1-4 As shown, both the single-light source sharpness test card and the multi-light source sharpness test card contain test patterns, which are continuously arranged graphics.

[0044] The test pattern is a continuous arrangement of graphics, and changes in the graphics can be clearly perceived visually. When the human eye observes the test pattern, if the clarity and completeness of the graphics change, the human eye can clearly perceive it and lock onto the test pattern with differences, thereby judging the clarity status under the current light source.

[0045] The test pattern can also be set to a variety of shapes, such as circles, rectangles, and a series of other shapes that can be used as test patterns;

[0046] like Figure 3 As shown, when the light source is a single light source and a single light source sharpness test card is used, the test pattern on the card is affected by the size of the light-emitting surface of the light source. The two extremes of the light-emitting surface will project onto the edge of the pattern, resulting in a ghosting. Among them, lines a / b and c / d represent the penumbra shadow range D1 produced by the light from the two extreme points of the light-emitting surface illuminating the same point on the test card; lines c and b represent the total penumbra range D2 after a single light source illuminates a scale.

[0047] like Figure 4 As shown, when there are multiple light sources and a multi-light source sharpness test chart is used, the light rays at different distances from the light source will project onto the edge of the pattern due to the influence of the size of the light-emitting surface, the number of light sources, and the spacing between the light sources, resulting in ghosting; the penumbra shadow range produced by the same point is D1; ​​lines k and b represent the total penumbra shadow range D2 after multiple light sources illuminate a scale.

[0048] also, Figure 3-4 This is for demonstration purposes only. In actual situations, the position and shape of the light source can vary, but the single-light source clarity test chart and the multi-light source clarity test chart are still applicable.

[0049] Specifically, such as Figure 1 As shown, the graphic is in the form of lines or dots. When the graphic is in the form of lines or dots, under the illumination of a light source, compared to blurry gradients or other ambiguous representations, lines or dots can clearly show the range and shape of the penumbra, accurately conveying the characteristics of the penumbra. Therefore, when observing lines with the naked eye, the lines that can be clearly observed and those that cannot be clearly observed can be used as the criteria for judging sharpness.

[0050] Specifically, in the single-light source sharpness test chart, the penumbra threshold of the widest line is the same as the maximum value of the penumbra threshold range of the single-light source sharpness test chart, and the penumbra threshold of the narrowest line is the same as the minimum value of the penumbra threshold range of the single-light source sharpness test chart.

[0051] With the above design, in one embodiment, the advantage is that the penumbra threshold range of the single light source clarity test card limits the penumbra threshold range of the lines. Thus, when observing the integrity and clarity of the lines under light source illumination, the line does not exceed the penumbra threshold range of the single light source clarity test card and is within the reasonable observation range of the eye-protection desk lamp, thereby determining whether the eye-protection desk lamp meets the eye protection standard.

[0052] Furthermore, when the human eye observes the single-light source sharpness test card, the penumbra threshold corresponding to the narrowest line that is clear and complete indicates the sharpness under the current light source illumination.

[0053] Specifically, in the multi-source sharpness test chart, the penumbra threshold of the widest line is the same as the maximum value of the penumbra threshold range of the multi-source sharpness test chart, and the penumbra threshold of the narrowest line is the same as the minimum value of the penumbra threshold range of the multi-source sharpness test chart.

[0054] With the above design, in one embodiment, the advantage is that the penumbra threshold range of the multi-light source clarity test card limits the penumbra threshold range of the lines. Thus, when observing the integrity and clarity of the lines under illumination, the penumbra threshold range of the multi-light source clarity test card is not exceeded, and the lines are within the reasonable observation range of the eye-protection desk lamp, thereby determining whether the eye-protection desk lamp meets the eye protection standard.

[0055] Furthermore, when the human eye observes the multi-light source sharpness test card, the penumbra threshold corresponding to the narrowest line that is clear and complete indicates the sharpness under the current light source illumination.

[0056] Specifically, such as Figure 1 As shown, in the test pattern, the line width decreases sequentially in the horizontal direction.

[0057] With the above design, in one embodiment, the advantage is that the line width affects the formation of the penumbra. Under illumination, when the line width decreases sequentially in the horizontal direction, the naked eye not only has an intuitive perception of the change in line width, but is also affected by the penumbra of lines of different widths. The changes in the clarity and integrity of the lines can be clearly perceived, and then the clarity under the current light source can be judged based on the corresponding penumbra threshold.

[0058] Specifically, the method for using the aforementioned resolution test card includes the following steps:

[0059] S1. Use a sharpness test card and place it directly below the light-emitting surface of the desk lamp, with a distance of 30mm or 20mm between the card and the light-emitting surface of the desk lamp.

[0060] When the desk lamp has a single light source, placing the single light source clarity test card directly below the luminous surface at a distance of 30mm will meet the normal viewing distance of the human eye under the current light source. When the desk lamp has multiple light sources, placing the multiple light source clarity test card directly below the luminous surface at a distance of 20mm will meet the normal viewing distance of the human eye under the current light source.

[0061] S2. When the clarity test card is illuminated by the light-emitting surface of the desk lamp, multiple test patterns are displayed. There are scale values ​​at the test patterns. The integrity and clarity of the test patterns are affected by the illumination of the light-emitting surface of the desk lamp.

[0062] When multiple test patterns are illuminated by a light source, the integrity and clarity of the test patterns are affected. There are relatively clear and relatively blurry observation phenomena among the test patterns. The scale values ​​of different test patterns are different penumbra thresholds, which can reflect the clarity of the current light source illumination.

[0063] S3. Use the naked eye to observe the clarity test card, find the test pattern with the lowest completeness and clarity among the test patterns that can be seen by the naked eye, and record the scale value at that test pattern.

[0064] The integrity and clarity of the test pattern are affected by the illumination of the light source. When the test pattern is observed with the naked eye, the penumbra threshold represented by the smallest test pattern that can be clearly observed indicates the clarity of the current light source. This scale value is recorded for further comparison.

[0065] S4, such as Figure 1 and Figure 2 As shown, the determination is based on whether the image is clearly presented.

[0066] By using the penumbra threshold represented by the image, we can determine whether the current light source meets the clarity standard required for an eye-protecting desk lamp, and the level of clarity that the current light source can provide.

[0067] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A sharpness test card for an eye-care desk lamp, characterized in that: The single light source definition test card and the multi-light source definition test card are included. The size of the single light source definition test card is 210mm*140mm, and the penumbra threshold interval is set to 0.1mm to 0.5mm. The size of the multi-light source definition test card is 220mm*326mm, and the penumbra threshold interval is set to 0.5mm to 20mm. The edge bleeding size of the single light source definition test card and the multi-light source definition test card is 13mm*13mm, and the light transmission surface material of the single light source definition test card and the multi-light source definition test card is selected to be high-transmission PE material. The single light source definition test card and the multi-light source definition test card are provided with test patterns, the test patterns are arranged in a continuous pattern, and the pattern is a line. In the single light source definition test card, the penumbra threshold of the widest line is the same as the maximum value of the penumbra threshold interval of the single light source definition test card, and the penumbra threshold of the narrowest line is the same as the minimum value of the penumbra threshold interval of the single light source definition test card. In the multi-light source definition test card, the penumbra threshold of the widest line is the same as the maximum value of the penumbra threshold interval of the multi-light source definition test card, and the penumbra threshold of the narrowest line is the same as the minimum value of the penumbra threshold interval of the multi-light source definition test card.

2. The definition test card of an eye-protecting desk lamp according to claim 1, characterized in that: In the test pattern, the line width decreases in the horizontal direction.

3. The test method of a resolution test card according to any one of claims 1 to 2, characterized in that, The following steps are included: S1, using the definition test card, placing it directly below the light emitting surface of the desk lamp, and limiting the distance to be 30mm or 20mm from the light emitting surface of the desk lamp; When the desk lamp is a single light source, the single light source definition test card is placed directly below the light emitting surface and the distance is 30mm, which can meet the normal viewing distance of the human eye under the current light source; When the desk lamp is a multi-light source, the multi-light source definition test card is placed directly below the light emitting surface and the distance is 20mm, which can meet the normal viewing distance of the human eye under the current light source; S2, the definition test card is irradiated by the light emitting surface of the desk lamp, and a plurality of test patterns are presented, the test patterns have scale values, and the completeness and definition of the test patterns are affected by the irradiation of the light emitting surface of the desk lamp; Under the irradiation of the light source, the completeness and definition of the test patterns are affected, and there is a relative clear and relative blurred observation phenomenon between the test patterns, the scale values at different test patterns correspond to different penumbra thresholds, which can reflect the definition condition of the current light source irradiation; S3, observing the definition test card with the human eye, finding the test pattern with the smallest completeness and definition in the test pattern that can be clearly seen by the human eye, and recording the scale value at the test pattern; The completeness and definition of the test pattern are affected by the irradiation of the light source, when observing the test pattern with the human eye, the penumbra threshold represented by the smallest test pattern in the test pattern that can be clearly observed represents the definition condition of the current light source under irradiation, and the scale value is recorded for comparison in the next step; S4, judging whether the current light source meets the definition standard required by the desk lamp and the degree of definition provided by the current light source through the penumbra threshold represented by the test pattern.

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