TWI755252B - Luminance meter - Google Patents

Abstract

The present disclosure relates to a luminance meter including a sensing device, a connecting element and a light receiving element. The connecting element is connected with the sensing device. The connecting element has a penetration hole. The light receiving element is removably sleeved on the connecting element to collect light, so that the light transmits into the sensing device through the penetration hole for brightness sensing. Therefore, the light receiving element can be installed or removed according to the measurement requirements, so as to effectively collect light and perform brightness sensing.

Description

Luminance meter

This case is about an optical measuring device, especially a luminance meter.

Luminometers are often used in optical measurements, such as measuring light-emitting diodes in backlight modules. Generally speaking, when a luminance meter measures a light source, the light source is received and then enters the sensor, but its light path and structure are fixed when the luminance meter leaves the factory.

Specifically, the luminance meter will perform intensity correction on a standard light source before leaving the factory, and correct the difference between the spectrum of each wavelength of the standard light source and the spectrum of each wavelength sensed by the sensor, and will correct The latter wavelength difference value is stored in the memory of the luminance meter, and the calculation is performed with this wavelength difference value in subsequent measurements.

However, when the light source to be measured changes or exceeds the luminance specification of the luminance meter, such a traditional luminance meter must add optical lenses and adjust the calculation ratio according to the measurement data, which is not only inaccurate, but also increases the measurement complexity. troubled. Although it is possible to deal with different light sources through multiple different luminance meters, it will also increase the cost of equipment procurement.

Therefore, how to develop a luminance meter that can effectively solve the problems and shortcomings of the prior art is a problem to be solved at present.

The main purpose of this case is to provide a luminance meter to solve and improve the problems and shortcomings of the aforementioned prior art.

Another object of the present application is to provide a luminance meter, by which the light-receiving element can be removably sleeved on the connecting element, and the light-receiving element can be installed or removed according to the measurement requirements, so as to effectively collect light and perform luminance sensing. .

Another purpose of this case is to provide a luminance meter, which can measure the light source to be measured immediately through the selection of optical lenses and the characteristics of different diameters of the light-receiving openings of the light-receiving elements, and no additional manual calculation is required after the measurement. It can not only measure accurately, reduce the trouble of measurement, but also greatly reduce the cost of measurement.

In order to achieve the above purpose, a preferred embodiment of the present application is to provide a luminance meter, including: a sensing device; a connecting element connected to the sensing device, wherein the connecting element has a through hole; and a light-receiving device The element is removably sleeved on the connecting element for collecting light, so that the light penetrates the through hole into the sensing device, and performs luminance sensing.

In order to achieve the above purpose, a preferred embodiment of the present application is to provide a luminance meter, comprising: a sensing device; a connecting element connected to the sensing device; a first light receiving element having a first receiving element a light port, wherein the diameter of the first light-receiving port is constant from the outside to the inside; a second light-receiving element has a second light-receiving port, wherein the diameter of the second light-receiving port gradually decreases from the outside to the inside; and a The third light-receiving element has a third light-receiving port, wherein the diameter of the third light-receiving port increases gradually from the outside to the inside; wherein, the first light-receiving element, the second light-receiving element and the third light-receiving element The light element is corresponding to a light source to be measured and is set on the connecting element for collecting light and penetrating the light into the sensing device for brightness sensing.

Some typical embodiments embodying the features and advantages of the present case will be described in detail in the description of the latter paragraph. It should be understood that this case can have various changes in different aspects, all of which do not depart from the scope of this case, and the descriptions and diagrams therein are essentially for illustrative purposes rather than limiting the present case.

Please refer to Figures 1 and 2, wherein Figure 1 is a schematic view of the structure of the luminance meter according to an embodiment of the present application, and Figure 2 is an exploded view of the structure of the luminance meter according to an embodiment of the present application. As shown in FIG. 1 and FIG. 2 , the luminance meter of an embodiment of the present application includes a sensing device 11 , a connecting element 12 and a light receiving element 13 . The connecting element 12 is connected with the sensing device 11 , and the connecting element 12 has a through hole 120 . The light-receiving element 13 is removably sleeved on the connecting element 12 for collecting light, so that the light penetrates through the through hole 120 into the sensing device 11 for luminance sensing. In this way, the light receiving element can be installed or removed according to measurement requirements, so as to effectively perform light receiving and brightness sensing.

In some embodiments, the connecting element 12 can be, for example, but not limited to, an adapter ring, and further has a groove 121 , and the through hole 120 penetrates the groove 121 . Further, the luminance meter 1 further includes an optical lens 14 , and the optical lens 14 is arranged in the groove 121 . According to the concept of the present case, the optical lens 14 can be an attenuating sheet or a diffusing sheet, etc., to cope with different light sources to be measured. Of course, the optical lens 14 can also be selected from lenses or lenses that can provide other optical properties as required.

Please refer to Figures 2 and 3, wherein Figure 3 is an A-A cross-sectional view of the luminance meter shown in Figure 1. As shown in FIGS. 2 and 3 , the sensing device 11 of the luminance meter 1 of the present application includes a first screwing portion 111 , and the connecting element 12 includes a second screwing portion 123 . The second screwing portion 123 is adjacent to the sensing device 11 relative to the groove 121 , the first screwing portion 111 and the second screwing portion 123 are matched with each other and can be screwed together, and the through hole 120 penetrates the second screwing portion 123 .

Further, the connecting element 12 has a side wall 122 , and the side wall 122 is disposed around the groove 121 , that is, the side wall 122 is formed on the periphery of the groove 121 . In addition, the light-receiving element 13 includes a sleeve portion 131 and a light-receiving port 132 , and the light-receiving port 132 is connected to the sleeve portion 131 . The sleeve portion 131 is sleeved on the side wall 122 and partially in contact with the optical lens 14 to fix the optical lens 14 . In some embodiments, the light receiving element 13 is preferably made of rubber, but not limited thereto. Under the structure of the luminance meter 1 of the present case, the light receiving element 13 can be easily installed or removed, so as to facilitate the user to replace the required optical lenses, and under certain requirements, the light receiving port 132 of the light receiving element 13 can also be Various designs are available.

Please refer to Figures 2, 4 and 5, wherein Figure 4 is a schematic diagram showing the structure of the luminance meter according to an embodiment of the present application, and Figure 5 is a schematic diagram showing the structure of the luminance meter according to an embodiment of the present application. In some embodiments, the diameter of the light-receiving port 132 of the light-receiving element 13 of the luminance meter 1 of the present application is from the side of the light-receiving port 132 away from the sleeve portion 131 to the other side adjacent to the sleeve portion 131 , which is It can be gradually decreased from the outside to the inside as shown in Figure 2, or constant from the outside to the inside as shown in Figure 4, or gradually increased from the outside to the inside as shown in Figure 5, to correspond to different light sources to be measured, increasing or The light-receiving range is reduced, so that the luminance meter 1 of the present case can be applied to measure the luminance of various light sources.

In some embodiments, the present application further provides a luminance meter configured with a plurality of light-receiving elements and/or optical lenses. Please refer to FIG. 6 , which is a schematic structural diagram of the luminance meter of an embodiment of the present application. As shown in FIG. 6 , the luminance meter 2 of an embodiment of the present application includes a sensing device 21 , a connecting element 22 , a first light-receiving element 23 , a second light-receiving element 24 and a third light-receiving element 25 . The connecting element 22 is connected with the sensing device 21 . The first light-receiving element 23 has a first light-receiving port 231, and the diameter of the first light-receiving port 231 is constant from the outside to the inside. The second light-receiving element 24 has a second light-receiving port 241 , and the diameter of the second light-receiving port 241 gradually decreases from the outside to the inside. The third light-receiving element 25 has a third light-receiving port 251 , and the diameter of the third light-receiving port 251 increases gradually from the outside to the inside. The first light-receiving element 23, the second light-receiving element 24 and the third light-receiving element 25 are set on the connecting element 22 correspondingly to the light source to be measured, so as to collect light and transmit the light to the sensing device In 21, luminance sensing is performed. In other words, the luminance meter 2 of the present application can be a product that provides at least three light-receiving elements, and users can select the first light-receiving element 23 , the second light-receiving element 24 and the third light-receiving element according to their own measurement requirements. An appropriate one of the light-receiving elements 25 is selected and mounted to the connecting element 22 to perform luminance measurement.

In some embodiments, the luminance meter 2 of the present application further includes a first optical lens 26 and a second optical lens 27 , wherein the first optical lens 26 can be an attenuator, a diffuser, a convex lens, a concave lens or a flat lens, but not It is limited, and the second optical lens 27 can be an attenuating sheet, a diffusing sheet, a convex lens, a concave lens or a flat lens, but it is not limited thereto. It should be particularly noted that the first optical lens 26 and the second optical lens 27 of the luminance meter 2 provided in this application are different optical lenses, so as to provide users with options for different light sources to be measured. In other words, through the selection of optical lenses and the characteristics of different diameters of the light-receiving openings of the light-receiving elements, the corresponding light source to be measured can be measured immediately, and no additional manual calculation is required after the measurement. The trouble of measurement can greatly reduce the cost of measurement.

To sum up, the present application provides a luminance meter. The light-receiving element is removably sleeved on the connecting element, and the light-receiving element can be installed or removed according to the measurement requirements, so as to effectively receive light and perform luminance sensing. . Further, through the selection of optical lenses and the characteristics of different diameters of the light-receiving openings of the light-receiving elements, the light source to be measured can be measured immediately, and no additional manual calculation is required after the measurement, which can not only accurately measure, but also reduce the amount of light. It can greatly reduce the cost of measurement.

Even though the present invention has been described in detail by the above-mentioned embodiments, various modifications can be made by those skilled in the art, but they are all within the scope of the appended claims.

1: Luminance meter

11: Sensing device

111: The first screw part

12: Connecting elements

120: perforation

121: Groove

122: Sidewall

123: Second screw part

13: Light receiving element

131: Fitting department

132: Receiving port

14: Optical lens

2: Luminance meter

21: Sensing device

22: Connecting elements

23: The first light receiving element

231: The first light receiving port

24: The second light-receiving element

241: The second light-receiving port

25: The third light-receiving element

251: The third light receiving port

26: The first optical lens

27: The second optical lens

A-A: Section line

FIG. 1 is a schematic diagram showing the structure of the luminance meter of an embodiment of the present application. Figure 2 is an exploded view of the structure of the luminance meter of an embodiment of the present application. FIG. 3 is an A-A sectional view showing the luminance meter shown in FIG. 1. FIG. FIG. 4 is a schematic diagram showing the structure of the luminance meter of an embodiment of the present application. FIG. 5 is a schematic diagram showing the structure of the luminance meter of an embodiment of the present application. FIG. 6 is a schematic diagram showing the structure of the luminance meter of an embodiment of the present application.

1: Luminance meter

11: Sensing device

111: The first screw part

12: Connecting elements

120: perforation

121: Groove

122: Sidewall

123: Second screw part

13: Light receiving element

131: Fitting department

132: Receiving port

14: Optical lens

Claims (10)

A luminance meter, comprising: a sensing device; a connecting element connected with the sensing device, wherein the connecting element has a through hole; and a light-receiving element removably sleeved on the connecting element for use The light is collected, and the light penetrates the through hole into the sensing device to perform luminance sensing. The luminance meter of claim 1, wherein the connecting element further has a groove, and the through hole penetrates the groove. The luminance meter according to claim 2, further comprising an optical lens, wherein the optical lens is arranged in the groove. The luminance meter according to claim 3, wherein the connecting element further has a side wall, and the side wall is arranged around the groove. The luminance meter of claim 4, wherein the light-receiving element includes a fitting portion, and the fitting portion is sleeved on the side wall and partially in contact with the optical lens, so as to fix the optical lens. The luminance meter of claim 5, wherein the light-receiving element further comprises a light-receiving port, and the light-receiving port is connected to the sleeve portion. The luminance meter of claim 6, wherein the diameter of the light-receiving opening increases, is constant or gradually decreases from one side away from the sleeve portion to the other side adjacent to the sleeve portion. The luminance meter according to claim 3, wherein the optical lens is an attenuation sheet or a diffusion sheet. The luminance meter of claim 2, wherein the sensing device includes a first screw portion, the connecting element includes a second screw portion, and the second screw portion is adjacent to the sensing device relative to the groove, The first screwing portion and the second screwing portion are screwed together, and the through hole penetrates the second screwing portion. A luminance meter, comprising: a sensing device; a connecting element connected with the sensing device; a first light-receiving element having a first light-receiving port, wherein the diameter of the first light-receiving port is from the outside The inside is constant; a second light-receiving element has a second light-receiving port, wherein the diameter of the second light-receiving port gradually decreases from the outside to the inside; and a third light-receiving element has a third light-receiving port, wherein The diameter of the third light-receiving port increases gradually from the outside to the inside; wherein, the first light-receiving element, the second light-receiving element and the third light-receiving element are selected to be set on the light source corresponding to a light source to be measured. The connecting element is used for collecting light and penetrating the light into the sensing device for brightness sensing.

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