CN212567873U - Light guide plate work efficiency test device - Google Patents

Abstract

The utility model discloses a light guide plate work efficiency test device, it includes: a Landolt ring panel comprising a light guide plate and a first number of Landolt ring arrays positioned in front of the light guide plate; a backlight positioned behind the Landol ring panel and including a first number of light emitting arrays, each light emitting array aligned with a corresponding Landol ring array of the Landol ring panel; and a control assembly electrically connected to the first number of light emitting arrays of the backlight and capable of individually controlling each light emitting array of the backlight. The light guide plate work efficiency test device has uniform brightness and/or color temperature and can be flexibly controlled.

Description

Light guide plate work efficiency test device

Technical Field

The utility model relates to a light guide plate work efficiency test device especially relates to the light guide plate work efficiency test device that can provide various illumination conditions.

Background

The light guide plate is a plexiglas plate with a diffusely reflective coating applied to the surface through which light is transmitted to illuminate the indicia on the light guide plate. Light guide plates are widely used in various industrial and domestic apparatuses. For example, a light guide plate may be used for illumination. For example, light guide plates are often mounted on cockpit control panels of vehicles and/or aircraft to provide a portion of the cockpit lighting of the vehicle and/or aircraft.

Light guide plate lighting is generally required to meet various requirements. For example, in the cockpit, it is generally required that the marks on the light guide plate should be clearly visible under any condition, so that the state information on the cockpit control panel can be accurately displayed to the pilot, and the safety of the aircraft in night flight is improved. However, in the flight process, the light environment in the cockpit is constantly changed, so that the work efficiency test is performed on the light guide plate, that is, whether the light color parameter adjustment range of the light guide plate can meet the use requirements under different illumination conditions, especially whether the illumination effect under extreme working conditions can be ensured, becomes a non-negligible factor influencing the visual comfort, the working efficiency and the flight safety of pilots.

In the existing standards, the requirements for the photochromic parameters of the light guide plate are mostly from experience, and systematic experimental verification conclusions are lacked. In order to correctly debug or set various parameters of the light guide plate lighting system, a light guide plate ergonomics testing device is used to perform an ergonomics test on the light guide plate lighting system.

Therefore, there is a need for an apparatus for testing work efficiency of a light guide plate, which can flexibly adjust parameters such as brightness and color temperature.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in order to solve the above-mentioned problems of the prior art. The utility model aims at providing a light guide plate work efficiency test device that can adjust luminance and colour temperature isoparametric in a flexible way.

In one aspect, the utility model discloses a light guide plate work efficiency test device, a serial communication port, light guide plate work efficiency test device includes: a Landolt ring panel comprising a light guide plate and a first number of Landolt ring arrays positioned in front of the light guide plate; a backlight positioned behind the Landol ring panel and including a first number of light emitting arrays, each light emitting array aligned with a corresponding one of the Landol ring arrays; and a control component electrically connected to each of the first number of light emitting arrays of the backlight. In this way, the light emitted by the lighting device can be controlled uniformly and flexibly.

Preferably, the first number is 4.

Preferably, each of the arrays of daltons rings comprises a plurality of daltons rings, wherein the opening direction of each of the daltons rings is random. By using multiple randon rings that are randomly open, the distribution of light out of the randon ring array can be made more uniform.

Preferably, the arrangement of the Landol rings in the plurality of Landol ring arrays is independent of each other. This also results in a more uniform light distribution across the lighting device.

Preferably, the light emitting array is a side emitting LED lamp array, wherein the LED lamp array comprises low color temperature LED lamps and high color temperature LED lamps which are spaced apart.

Preferably, the low color temperature LED lamp and the high color temperature LED lamp are a low color temperature LED lamp bar and a high color temperature LED lamp bar, respectively. In this way, the color temperature of the lighting device can be flexibly controlled.

Preferably, the backlight includes a first number of driver power adapters, wherein each driver power adapter is electrically connected to a corresponding light emitting array.

Preferably, the control assembly comprises a first number of signal receiving terminals, each signal receiving terminal being electrically connected to a corresponding driving power adapter. In this manner, the current and/or voltage of each light emitting array is allowed to be controlled individually, thereby controlling the light emitted by each light emitting array individually.

Preferably, the control assembly further comprises a remote control including a control element corresponding to each light emitting array. The color temperature/brightness, etc. of each region of the lighting device can be more conveniently controlled using the remote controller.

Preferably, the light guide plate ergonomic testing device further comprises a frame supporting the light guide plate ergonomic testing device.

As described above, one or more embodiments of the present invention provide a light guide plate ergonomics testing apparatus having advantages of flexibly adjusting brightness, color temperature and/or on/off of each part of the light guide plate ergonomics testing apparatus.

Drawings

The features and advantages of the present invention will become more apparent from the following non-limiting description of the preferred embodiments of the invention, as illustrated in the accompanying drawings. Wherein:

fig. 1 shows a schematic view of a light guide plate ergonomic testing device according to one or more embodiments of the present disclosure.

Fig. 2 shows an exploded view of a light guide plate ergonomic testing device in accordance with one or more embodiments of the present disclosure.

Fig. 3 shows details of a landau ring panel in accordance with one or more embodiments of the present invention.

Fig. 4 shows details of an randon ring array in accordance with one or more embodiments of the invention.

Fig. 5 shows a schematic diagram of four drive power adapters according to one or more embodiments of the present disclosure.

Fig. 6 shows a schematic diagram of a remote control in accordance with one or more embodiments of the present invention.

Fig. 7 shows schematic diagrams of spaced low color temperature LED light bars and high color temperature LED light bars according to one or more embodiments of the present invention.

Detailed Description

Specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that only the preferred embodiment of the invention has been shown in the drawings and is not to be considered limiting of its scope. Various obvious modifications, variations and equivalents of the embodiments of the invention described herein will occur to those skilled in the art based on the embodiments shown in the drawings, and the technical features of the embodiments described may be combined in any manner without contradiction, all of which are within the scope of the invention.

Referring to fig. 1, a schematic diagram of a light guide plate ergonomic testing device 100 is shown, according to one or more embodiments of the present disclosure.

In fig. 1, a light guide plate ergonomic testing device 100 may include a body 102 and an optional remote control 32. Preferably, the body 102 may take the form of a lighting panel. However, it should be understood that the body 102 may be other shapes suitable for illumination, as desired. Preferably, the light guide plate ergonomics testing device 100 may have a power connector 23 that may be electrically connected to an external power source. Alternatively, the light guide plate ergonomic testing device 100 may also have a power source (e.g., a battery, etc.) built into the body 102, in which case the light guide plate ergonomic testing device 100 may not have a power connector 23.

Preferably, the light guide ergonomics testing apparatus 100 may have an optional remote control 32. The remote control 32 may be used to transmit control signals to the body 102 in order to control the body 102 to perform illumination. The specific structure and function of the remote control 32 will be described in detail below. However, it should be appreciated that the light guide ergonomics testing apparatus 100 may have other control means. For example, one or more control buttons and related structures may be provided on the body of the light guide plate ergonomic testing device 100, and the like, as will be further described below.

Referring to fig. 2, an exploded view of a light guide plate ergonomic testing device 100 is shown, according to one or more embodiments of the present disclosure.

As shown in fig. 2, light guide plate ergonomics testing apparatus 100 may include a lambertian ring panel, a backlight, a control assembly, and an optional frame. These structures may be located in the body 102 of the light guide plate ergonomics testing device 100.

Preferably, the Landol ring panel 1 may be placed at the front surface of the light guide plate ergonomics testing apparatus 100.

Referring to fig. 3, details of the landau ring panel 1 according to one or more embodiments of the present invention are shown. Referring to fig. 2 and 3 in combination, the lambertian ring panel 1 may include a light guide plate (e.g., light guide plate 15 in fig. 2) and a first number of lambertian ring arrays (e.g., randon ring arrays 11, 12, 13, 14 in fig. 2 and/or 3).

The light guide plate 15 may be any type of light guide plate suitable for use in the field of light guide plate illumination. The light guide plate may be, for example, a plexiglas plate coated with a diffusely reflective coating, as previously described, or any other type of light guide plate known to those skilled in the art. It should be appreciated that although the light guide plate 15 is shown as a black sheet in fig. 1, in practice the light guide plate 15 is typically substantially transparent and its shape and thickness may be set as desired. Typically, the light guide plate 15 is the same or substantially the same area as the Landolt ring panel 1, and both are aligned.

The first number of Landolt ring arrays may be located in front of the light guide plate 15, for example on the front surface of the light guide plate ergonomic testing device 100. For example, the randon ring array may be secured to the lightguide by a skin (e.g., skin 10 in fig. 3). The skin 10 may include a first number of openings, and the first number of Landolt ring arrays may be disposed in corresponding openings in the skin. Other means of fixing the randon ring array to the light guide plate are also possible.

Typically, the first number is an integer greater than 1, such as 4. For example, as shown in fig. 2 and 3, the landolt ring panel 1 includes four langer ring arrays 11, 12, 13, 14. Preferably, each of the first number of Landolt ring arrays occupy the same area and collectively occupy a majority (e.g., greater than 3/4) or substantially all of the area of the front surface of light guide plate ergonomic testing device 100. Preferably, the first number of Landolt ring arrays are evenly distributed on the front surface of light guide plate ergonomics testing apparatus 100. Preferably, each of the arrays of randon rings is rectangular. However, one or more of the arrays of randon rings may be of other shapes.

Referring to fig. 4, details of an randon ring array (e.g., randon ring array 11) according to one or more embodiments of the invention are shown.

Each of the dalton ring arrays can include a plurality of dalton rings, for example, the lambdolar ring array 11 in fig. 4 can include a plurality of dalton rings 111. The number of Landolt rings in the Landolar ring array can be varied as desired. Preferably, each Landolar ring array comprises greater than or equal to 64, 100, 400 Landoll rings, and so forth. Preferably, the plurality of Landol rings of the Landol ring array are uniformly distributed.

Preferably, the size of the plurality of Landol rings of the Landol ring array is the same. The dalton ring is preferably circular in shape with an opening (i.e. C-shaped). The daltons ring may also be of other shapes. In a preferred example, each of the daltons rings (e.g., the daltons ring 111) has a line width (i.e., opening size) of 0.25mm and a diameter of 1.25 mm. The Landol ring may take other sizes.

Preferably, the opening direction of the randon ring of the embodiment of the present invention is one of the following four directions: up, down, left and right. However, in other embodiments, the Landolt rings may take on other opening directions, such as obliquely upward, obliquely downward, etc., and the angle of inclination may also be varied as desired.

Preferably, the opening direction of each randon ring in the inventive landau ring array is random. In a preferred example, the opening direction of each randon ring may be randomly selected from four directions of up, down, left, and right, as shown in fig. 4. In other examples, the opening direction of the Landolt rings may be truly random, e.g., they may be obliquely up/down, and the angle of inclination may be random. Through random opening direction, the utility model discloses a Landau's Er encircles array can realize even printing opacity.

In other embodiments, the opening direction of the Landolt rings may also be non-random. For example, the opening directions of the Landolt rings may be arranged in the order of up, down, left, right, and so on. Regardless of the alignment in the core, the opening direction of the normally randon ring should be designed to provide uniform light transmission.

Preferably, the arrangement of the individual daltons rings in each of the daltons ring arrays is independent of each other. For example, each Landauer ring array may be arranged in an uncorrelated fashion.

As previously described, the light guide plate may be placed behind the lambertian ring panel, for example, between the lambertian ring panel and the backlight. Therefore, light from the backlight is illuminated through the light guide plate to the lambertian ring array of the lambertian ring panel and transmitted out through the lambertian rings in the lambertian ring array.

As shown in fig. 2, a backlight may be placed inside the body 102 of the light guide plate ergonomic testing device 100 and behind the langerhan ring panel 1 (i.e., farther from the front surface of the light guide plate certification device 100) for backlighting the langerhan ring panel 1. The backlight 2 is preferably a light color adjustable backlight whose brightness and temperature can be adjusted. The total area of the backlight may be the same or substantially the same as the area of the Landolt ring panel, with both aligned or substantially aligned.

The backlight 2 may comprise a first number of light emitting arrays, each light emitting array being used to backlight a corresponding rando ring array of the lambertian ring panel. For example, as shown in fig. 2, the backlight 2 may include four light emitting arrays 211, 212, 213, 214, which may be located on the light emitting array panel 21. Each light emitting array is positionally aligned with a corresponding lambertian ring array. Preferably, each light emitting array is the same or substantially the same area as the corresponding Landolt ring array. In this manner, each light emitting array can provide backlighting for a corresponding array of dalton rings. For example, light emitting array 211 may be positioned behind and positionally aligned with the dalton ring array 11, light emitting array 212 may be positioned behind and positionally aligned with the dalton ring array 12, light emitting array 213 may be positioned behind and positionally aligned with the dalton ring array 13, light emitting array 214 may be positioned behind and positionally aligned with the dalton ring array 14, and so on.

Preferably, each light emitting array employs an LED light mixing system. The LED light mixing system has the advantages that dynamic dimming can be realized based on the LED, and the brightness of the Landau ring is adjusted by adjusting the current and the voltage. In a preferred example, the adjustment range of the luminance is 0.3fl to 100 fl. More preferably, the adjustment range of the luminance is 0fl to 300 fl. Furthermore, with such a light-mixing system, a uniformity of the lambertian ring luminance >0.5 in the different regions can be achieved.

Specifically, each light emitting array may be an LED lamp array, and the LED lamp array may include low color temperature LED lamps and high color temperature LED lamps which are spaced apart. Preferably, at least one LED lamp should be aligned behind each lambertian ring to provide backlighting thereto. Preferably, there should be at least one low color temperature LED lamp and at least one high color temperature LED lamp aligned behind each lambertian ring.

The LED lamp may take various shapes. Preferably, the LED lamp may be a side emitting LED light bar array. At the moment, the LED light bar array comprises low-color-temperature LED light bars and high-color-temperature LED light bars which are arranged at intervals. Similarly, each of the daltons rings may be located in front of at least one LED light bar (one LED light bar may be aligned to, for example, one row or column of daltons rings). Preferably, each lambertian ring may be located in front of at least one low color temperature LED light bar and at least one high color temperature LED light bar. The number of LED light bars included in the array of LED light bars can be selected as desired, such as 8, 16, 32, 64, and so on. It will be appreciated that the LED lamp may take other shapes than a light bar. Referring to fig. 7, a schematic diagram of spaced low color temperature LED light bars 2111 and high color temperature LED light bars 2112 is shown, according to one or more embodiments of the present invention.

The color temperature of the light emitting array can be adjusted by changing the light emitting ratio of the low color temperature LED lamp and the high color temperature LED lamp. For example, by changing the drive currents of the low color temperature LED lamp and the high color temperature LED lamp, the luminances of the low color temperature LED lamp and the high color temperature LED lamp can be changed, thereby changing the luminance ratio of the low color temperature LED lamp and the high color temperature LED lamp, so that the color temperature of the light emitting array can be changed. In a preferred example, the color temperature is adjustable between 2700K and 6500K. For example, the color temperature of a low color temperature LED lamp may be 2700K, and the color temperature of a high color temperature LED lamp may be 6500K.

Preferably, the backlight may further comprise a first number of driver power adapters, each driver power adapter electrically connected to a corresponding light emitting array to power a corresponding light emitting array. Referring to fig. 5, a schematic diagram of four drive power adapters according to one or more embodiments of the present disclosure is shown. For example, as shown in fig. 5, the backlight source may include 4 driving power adapters 221, 222, 223, 224, which respectively supply power to the light emitting arrays 11, 12, 13, 14.

Referring to fig. 5, the first number of drive power adapters 221, 222, 223, 224 may be electrically connected to the power interface 24 by wires 25. The power interface 24 may be electrically connected to an external power source through the power connector 23. In one example, the power interface 24 may be connected to 220V, 50Hz AC power, which may be 200W or less. As noted above, other forms and parameters of power sources may be used. For example, a built-in battery may be employed as the power source.

By controlling the current flowing through (or the voltage across) an LED light bar using a drive power adapter, the brightness of the respective LED light bar can be controlled. The brightness of the low-color temperature LED lamp strip and the high-color temperature LED lamp strip in the light-emitting array is controlled, so that the brightness of the light-emitting array can be controlled; the color temperature of the light emitting array can be controlled by controlling the brightness ratio of the low color temperature LED lamp strip and the high color temperature LED lamp strip.

The control assembly may include a first number of signal receiving terminals. Referring to fig. 2 and 5, the signal receiving ends of the control assembly may be positioned inside the body of the light guide plate ergonomic testing device 100, such as on the internal frame 41 of the light guide plate ergonomic testing device 100.

Preferably, each signal receiving terminal may be configured to receive a control signal for a corresponding light emitting array and to control the corresponding light emitting array using the control signal. For example, the control component may include 4 signal receiving terminals 311, 312, 313, 314, which respectively receive control signals for controlling the driving power adapters 221, 222, 223, 224. The signal receiving end can control the corresponding driving power adapter based on the control signal so as to control the current flowing through (or the voltage across) the LED light bars in the corresponding LED light bar array. In this way, individual and centralized control of color temperature, brightness, switching of the 4 dalton ring arrays 11, 12, 13, 14 can be achieved. Those skilled in the art know how to design a circuit to control the driving power adapter according to the signal from the signal receiving terminal so as to control the on/off, color temperature, brightness, etc. of the corresponding LED lamp or light bar, and therefore, the detailed description thereof is omitted.

In a preferred embodiment, the control assembly may also include a remote control 32 located outside the body 102 of the light guide plate ergonomic testing device 100, as described above. Preferably, the remote controller 32 may transmit control signals to individually control the brightness and color temperature of each of the plurality of light emitting arrays. Referring to fig. 6, a schematic diagram of a remote control 32 is shown, according to one or more embodiments of the present invention.

As shown in fig. 6, the remote control 32 may be a wireless remote control. A tester may transmit control signals to a first number of signal receiving terminals (e.g., signal receiving terminals 311, 312, 313, 314) located in the body 102 of the light guide plate ergonomic testing device 100 by manipulating control elements (e.g., buttons, etc.) on the remote control 32. The remote control 32 may communicate with the signal receiving end using any wireless communication means known to those skilled in the art, such as but not limited to Wi-Fi, infrared, bluetooth, Zigbee, etc.

Preferably, the remote controller 32 may adopt a 2.4G Wi-Fi technology to communicate with each signal receiving end, and the technology has the characteristics of low power consumption, long transmission distance, strong anti-interference capability, and the like.

As shown in fig. 6, the remote controller 32 may preferably control the brightness, color temperature, and switches of each of the first number of light emitting arrays individually, or collectively. The remote controller 32 may transmit a brightness control signal and/or a color temperature control signal to each of the first number of signal receiving terminals, respectively, so that the signal receiving terminals may control the corresponding driving power adapter based on the received brightness control signal and/or color temperature control signal to control the brightness and/or color temperature of the corresponding light emitting array of the backlight source.

The remote control 32 may include various control elements, an example layout of which may be as shown in FIG. 6. The remote controller 32 includes switch buttons 321 and 322 for collectively controlling all the light emitting arrays, wherein the switch button 321 is operable to illuminate all the light emitting arrays and the switch button 322 is operable to turn off all the light emitting arrays.

The remote controller 32 may also include switch buttons 3241, 3242, 3243, 3244 for individually controlling each light emitting array. For example, the switch keys may correspond to a light emitting array, respectively. For example, the upper key is used to light the corresponding light emitting array and to select a corresponding light emitting array to provide control when the light emitting array is lit as a whole, and the lower key is used to turn off the corresponding light emitting array. Other control element layouts may be designed.

The remote control 32 may also include ring keys 323. The ring keys may include, for example, up, down, left, and right four direction keys. The up-down keys 3231 may implement increase/decrease of brightness of the light emitting array, respectively, and the left-right keys 3232 may implement increase/decrease of color temperature of the light emitting array, respectively. For example, when an upper key of the key 3241 is pressed, a corresponding light emitting array (e.g., the light emitting array 211) is selected, and when an upper key of the up-down key 3231 of the wake-up key 323 is pressed, the brightness of the LED lamp in the light emitting array 211 may be increased. When the left key of the key 3232 is pressed, the color temperature of the light emitting array 211 may be reduced, for example, the luminance ratio of the low color temperature LED lamp to the high color temperature LED lamp is reduced. Other control schemes may also be devised.

Preferably, the increase/decrease of the brightness, color temperature may be continuous. By the method, stepless continuous adjustment of the brightness and the color temperature of the whole light-emitting array can be realized, and the phenomenon of jumping cannot occur.

It will be appreciated that the present invention may be controlled in other ways than by the remote control 32 shown in fig. 6. For example, associated control elements may be provided on the body 102 of the light guide plate ergonomic testing device 100. Alternatively, a non-dedicated remote control may be used for control. For example, a universal remote control such as a television remote control can be used to implement the function mapping by pairing. For example, a corresponding application may be installed on a mobile device (e.g., a cell phone, etc.) and the light guide plate ergonomics apparatus 100 may be controlled by the application. Any other suitable remote control as contemplated by those skilled in the art may be used to implement the functionality of the remote control 32.

Preferably, the light guide plate ergonomic testing device 100 may further include a frame for supporting the light guide plate ergonomic testing device. As shown in fig. 2, the frame may include an internal frame 41 for supporting the various internal components of the light guide plate ergonomic testing device. For example, a drive power adapter or the like may be fixed to the inner frame 41 so that its relative position to the Landolt ring remains fixed. The frame may also include a housing 42 for receiving the body 102 of the light guide plate ergonomic testing device 100 in order to protect the elements within the body 102 of the light guide plate ergonomic testing device 100.

The light guide plate ergonomics testing apparatus according to embodiments of the present specification may be used to perform ergonomics tests on various parameters of a light guide plate.

For example, the different brightness and color temperature of the ambient light source (which simulates the lighting in a real environment (e.g., a cockpit)) may be adjusted, and then the different brightness and/or color temperature of the light guide plate ergonomics testing apparatus according to embodiments of the present description may be adjusted (as described above, each region may be adjusted independently). Subsequently, the appearance of the landolt ring can be observed. For example, if the display of the lambertian ring is neither glaring nor clearly distinguishable, then it is recorded that the optimum light guide plate brightness and color temperature is at the brightness and color temperature of the ambient light source. The light guide plate work efficiency test device can obtain the optimal parameters of the light guide plate and use the optimal parameters for the actual design of the light guide plate lighting device.

It should be understood that the embodiments in this specification are described in a progressive manner, and that the same or similar parts in the various embodiments may be referred to one another, with each embodiment being described with emphasis instead of the other embodiments. It is to be appreciated that the present specification discloses a number of embodiments, and that the disclosure of such embodiments may be understood by reference to each other.

It should be understood that the above description describes particular embodiments of the present specification. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

It should be understood that an element described herein in the singular or shown in the figures only represents that the element is limited in number to one. Furthermore, modules or elements described or illustrated herein as separate may be combined into a single module or element, and modules or elements described or illustrated herein as single may be split into multiple modules or elements.

It is also to be understood that the terms and expressions employed herein are used as terms of description and not of limitation, and that the embodiment or embodiments of the specification are not limited to those terms and expressions. The use of such terms and expressions is not intended to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications may be made within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.

Also, it should be noted that while the present invention has been described with reference to specific exemplary embodiments, it should be understood by those skilled in the art that the above embodiments are merely illustrative of one or more embodiments of the present invention, and that various changes and substitutions of equivalents may be made without departing from the spirit of the present invention, and therefore, it is intended that all changes and modifications to the above embodiments be included within the scope of the appended claims.

Claims (10)

1. The utility model provides a light guide plate work efficiency test device which characterized in that, light guide plate work efficiency test device includes:

a Landolt ring panel comprising a light guide plate and a first number of Landolt ring arrays positioned in front of the light guide plate;

a backlight positioned behind the Landol ring panel and including a first number of light emitting arrays, each light emitting array aligned with a corresponding one of the Landol ring arrays; and

a control component electrically connected to each of the first number of light emitting arrays of the backlight.

2. The light guide plate ergonomics testing apparatus of claim 1 wherein said first number is 4.

3. The light guide plate ergonomics testing apparatus of claim 1 wherein each of the arrays of daltons rings comprises a plurality of daltons rings, wherein the opening direction of each of the daltons rings is random.

4. The light guide plate ergonomical testing apparatus of claim 1 wherein the arrangement of the Landol rings in said plurality of arrays of Landol rings is independent of each other.

5. The light guide plate ergonomics testing apparatus of claim 1 wherein said light emitting array is a side emitting LED array, wherein said LED array comprises spaced apart low color temperature LED lights and high color temperature LED lights.

6. The light guide plate ergonomics testing device of claim 5, wherein the low color temperature LED lamp and the high color temperature LED lamp are a low color temperature LED light bar and a high color temperature LED light bar, respectively.

7. The light guide plate ergonomical testing apparatus of claim 1, wherein said backlight source comprises a first number of driver power adapters, wherein each driver power adapter is electrically connected to a corresponding light emitting array.

8. The light guide plate ergonomical testing apparatus of claim 1 wherein said control assembly comprises a first number of signal receiving terminals, each signal receiving terminal being electrically connected to a corresponding drive power adapter.

9. The light guide plate ergonomical testing apparatus of claim 1 wherein said control assembly further comprises a remote control including a control element corresponding to each light emitting array.

10. The light guide plate ergonomic testing device of claim 1 wherein said light guide plate ergonomic testing device further comprises a frame supporting said light guide plate ergonomic testing device.

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