CN216386235U

CN216386235U - Detection device for screen gain and scattering angle

Info

Publication number: CN216386235U
Application number: CN202122468720.9U
Authority: CN
Inventors: 吕盛; 陈宗学
Original assignee: Wuhu Light Screen Manufacturing Co ltd
Current assignee: Wuhu Light Screen Manufacturing Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-04-26
Anticipated expiration: 2031-10-13

Abstract

The utility model provides a detection device for screen gain and scattering angle, which comprises a support frame, wherein the upper end of the support frame is connected with a semicircular detection table, the circle center of the detection table is rotatably connected with a rotating shaft, the detection table is provided with a semicircular arc-shaped sliding chute, a T-shaped sliding block slides on the sliding chute, a transmission rod is connected between the rotating shaft and the sliding block, the upper end of the rotating shaft is provided with a hanging plate, the center inside the hanging plate is provided with a detection hole, and the upper end of the sliding block is provided with a brightness meter; examine test table one side and be connected with the mounting bracket, the inside rotation of mounting bracket is connected with the pivot, is connected with the regulation pole in the pivot, and the regulation pole other end is connected with the bracing piece, and the bracing piece is mutually perpendicular with the regulation pole, installs the lamp on the bracing piece. The utility model is convenient to adjust and can carry out detection quickly.

Description

Detection device for screen gain and scattering angle

Technical Field

The utility model mainly relates to the technical field of screen detection, in particular to a device for detecting screen gain and scattering angle.

Background

The screen refers to a white screen displaying a projection when in a discharge shadow. With the development of the times, the cinema is rapidly developed, so that the requirements of audiences on the visual effect and the projection quality of a cinema screen are higher and higher, and the screen gain and the scattering angle are effective indexes for ensuring the projection quality of the screen, so that after the screen is processed, the screen gain and the scattering angle need to be detected to ensure the qualified quality of the screen.

For example, the patent application No. cn201611176454.x includes a movable base, an adjusting support is disposed on the base, a universal wheel capable of being fixed is disposed at the bottom of the base, an adjusting support hinged to the base is disposed on the base, an optical detector is disposed on the adjusting support via a movable adjusting mechanism, and the optical detector can adjust and move on an arc path of the adjusting support. Although the arc-shaped track structure can be used for adjusting the angle of the optical detector to detect the optical performance of any position and angle of the screen, a detection light source needs to be provided at a remote place during detection, the detection light source needs to be kept horizontal with the optical detector and a detection point, and the adjustment is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a device for detecting screen gain and scattering angle, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a detection device for screen gain and scattering angle comprises a support frame, wherein a semicircular ring-shaped detection table is connected to the upper end of the support frame, a rotating shaft is rotatably connected to the circle center of the detection table, a semicircular arc-shaped sliding groove is formed in the detection table, a T-shaped sliding block slides on the sliding groove, a transmission rod is connected between the rotating shaft and the sliding block, a hanging plate is arranged at the upper end of the rotating shaft, a detection hole is formed in the center of the interior of the hanging plate, and a brightness meter is mounted at the upper end of the sliding block; the detection table comprises a detection table body and is characterized in that one side of the detection table body is connected with an installation frame, a rotating shaft is rotatably connected inside the installation frame, an adjusting rod is connected to the rotating shaft, the other end of the adjusting rod is connected with a supporting rod, the supporting rod is perpendicular to the adjusting rod, and a radiation lamp is installed on the supporting rod.

Preferably, the support frame is provided with a motor box, a stepping motor is arranged in the motor box, and the output end of the stepping motor is connected with the axis of the rotating shaft.

Preferably, the circle center of the semicircular arc-shaped sliding chute is the same as that of the semicircular annular detection table.

Preferably, the upper end of the rotating shaft is rotatably connected with a threaded sleeve, the center of the lower end of the hanging plate is connected with a threaded rod, and the threaded sleeve is rotatably connected with the threaded rod.

Preferably, when the adjusting rod is parallel to the transmission rod, the irradiation point of the irradiation lamp and the detection point of the luminance meter are on the same horizontal plane.

Preferably, a telescopic rod is installed on one side of the mounting frame and connected with the axis of the rotating shaft, and a driving ring disc is sleeved on the other end of the telescopic rod.

Preferably, the driving ring disc is provided with two limiting holes, the side wall of the mounting frame is provided with a limiting rod, and when the limiting rod is connected with the two limiting holes respectively, the adjusting rod is parallel or vertical to the transmission rod.

Compared with the prior art, the utility model has the beneficial effects that:

through irradiation and the like, the position of the detection light source can be quickly determined, and the detection light source is ensured to be positioned on the same horizontal plane with the detection hole and the detection point of the brightness meter, so that effective detection is ensured, the use is convenient and quick, and the working efficiency is improved; the adoption detects platform and spout, can utilize its arc structure to adjust the angle of luminance meter and detect the optical property of any position of screen and angle, can detect screen gain and scattering angle fast, adopts driving motor, can the rotation of automatic drive luminance meter, improves degree of automation and practicality.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic top view of a test table according to the present invention;

FIG. 3 is an enlarged view of the utility model at A;

FIG. 4 is a side view of the adjustment lever, support lever and lamp of the present invention;

fig. 5 is a perspective view of the hanging plate of the utility model.

In the figure: 1. a support frame; 11. a motor case; 2. a detection table; 21. a rotating shaft; 22. a chute; 23. a slider; 24. a transmission rod; 3. a mounting frame; 31. a rotating shaft; 32. adjusting a rod; 33. a support bar; 34. illuminating a lamp; 35. a telescopic rod; 36. a drive ring disc; 37. a limiting hole; 38. a limiting rod; 4. hanging the plate; 41. a detection hole; 42. a threaded sleeve; 43. a threaded rod; 5. and a brightness meter.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the present invention provides a technical solution: the utility model provides a detection apparatus for screen gain and scattering angle, includes support frame 1, the annular test table 2 that detects of semicircle is connected with to support frame 1 upper end, 2 centre of a circle departments of test table rotate and are connected with rotation axis 21, be equipped with the spout 22 of semicircle arcuation on detecting the platform 2, slide "T" shape's slider 23 on the spout 22, be connected with transfer line 24 between rotation axis 21 and the slider 23, be equipped with motor case 11 on the support frame 1, the inside step motor that is equipped with of motor case 11, the step motor output is connected with rotation axis 21 axle center, and the semicircle arcuation the spout 22 centre of a circle is the same with the annular test table 2 centre of a circle of semicircle. The stepping motor is started, so that the rotating shaft 21 rotates, the position of the brightness meter 5 is changed, the angle of the brightness meter 5 can be adjusted by utilizing the arc structure of the brightness meter to detect the optical performance of any position and angle of the screen, and the screen gain and the scattering angle can be detected quickly.

Please refer to fig. 1 and 5 again, a hanging plate 4 is arranged at the upper end of the rotating shaft 21, a detection hole 41 is arranged at the center inside the hanging plate 4, a luminance meter 5 is arranged at the upper end of the sliding block 23, a threaded sleeve 42 is rotatably connected at the upper end of the rotating shaft 21, a threaded rod 43 is connected at the center of the lower end of the hanging plate 4, and the threaded sleeve 42 is rotatably connected with the threaded rod 43. Adopt link plate 4, can directly hang little screen on link plate 4, facilitate the use, if meet big screen, can adopt link plate 4 earlier, align the check point of inspection hole 41 and screen, take off link plate 4 again, further guarantee the accuracy of detecting.

Referring to fig. 1-4, an installation frame 3 is connected to one side of the detection table 2, a rotating shaft 31 is rotatably connected to the inside of the installation frame 3, the rotating shaft 31 is connected with an adjusting rod 32, the other end of the adjusting rod 32 is connected with a supporting rod 33, the support bar 33 is perpendicular to the adjusting bar 32, the support bar 33 is provided with a radiation lamp 34, when the adjusting rod 32 is parallel to the driving rod 24, the irradiation point of the irradiation lamp 34 is on the same horizontal plane with the detection hole 41 and the detection point of the luminance meter 5, one side of the mounting rack 3 is provided with an expansion link 35, the expansion link 35 is connected with the axis of the rotating shaft 31, the other end of the telescopic rod 35 is sleeved with a driving ring disc 36, two limiting holes 37 are arranged on the driving ring disc 36, the side wall of the mounting frame 3 is provided with a limiting rod 38, and when the limiting rod 38 is connected with the two limiting holes 37 respectively, the adjusting rod 32 is parallel or vertical to the transmission rod 24. When the device is used, the driving ring disc 36 is pulled to extend the telescopic rod 35, the limiting rod 38 is separated from the limiting hole 37, the adjusting rod 32 is rotated until the other limiting hole 37 is opposite to the limiting rod 38, the driving ring disc 36 is pressed internally to shorten the telescopic rod 35, the limiting hole 37 is clamped with the limiting rod 38, the adjusting rod 32 is fixed, the adjusting rod 32 is parallel to the driving rod 24 at the moment, so that the irradiation point of the irradiation lamp 34 is positioned on the same horizontal plane with the detection point of the detection hole 41 and the brightness meter 5, the irradiation lamp 34 is started to give a light source, the optical index of the screen is detected according to the method in JB-T7809-2005, if the light source is positioned at a longer distance, the irradiation lamp 34 can irradiate in two directions, or the irradiation of the irradiation lamp 34 can be used for determining the position of a remote detection light source, so that the detection light source is positioned on the same horizontal plane with the detection point of the detection hole 41 and the brightness meter 5, ensuring effective detection.

The specific operation mode of the utility model is as follows:

when a worker uses the screen, firstly, the detection point of the screen is aligned with the detection hole 41, then the driving ring disc 36 is pulled to extend the telescopic rod 35, the limiting rod 38 is separated from the limiting hole 37, the adjusting rod 32 is rotated until the other limiting hole 37 is opposite to the limiting rod 38, the driving ring disc 36 is pressed in the inner pressure to shorten the telescopic rod 35, the limiting hole 37 is clamped with the limiting rod 38 to fix the adjusting rod 32, the adjusting rod 32 is parallel to the transmission rod 24 at the moment, so that the irradiation point of the irradiation lamp 34 is positioned on the same horizontal plane with the detection point of the detection hole 41 and the luminance meter 5, the irradiation lamp 34 is started to give a light source, the optical index of the screen is detected according to the method in JB-T7809-2005, the stepping motor is started to rotate the rotating shaft 21, so that the position of the luminance meter 5 is changed, and the angle of the luminance meter 5 is adjusted to detect the optical performance of any position and angle of the screen, the screen gain and the scattering angle can be rapidly detected.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The utility model provides a detection apparatus of screen gain and scattering angle, includes support frame (1), its characterized in that: the device is characterized in that a semicircular annular detection table (2) is connected to the upper end of the support frame (1), a rotating shaft (21) is rotatably connected to the circle center of the detection table (2), a semicircular arc-shaped sliding groove (22) is formed in the detection table (2), a T-shaped sliding block (23) slides on the sliding groove (22), a transmission rod (24) is connected between the rotating shaft (21) and the sliding block (23), a hanging plate (4) is arranged at the upper end of the rotating shaft (21), a detection hole (41) is formed in the center of the interior of the hanging plate (4), and a brightness meter (5) is installed at the upper end of the sliding block (23);

examine test table (2) one side and be connected with mounting bracket (3), mounting bracket (3) inside rotation is connected with pivot (31), be connected with in pivot (31) and adjust pole (32), it is connected with bracing piece (33) to adjust pole (32) other end, bracing piece (33) are mutually perpendicular with adjusting pole (32), install lamp (34) on bracing piece (33).

2. The apparatus for detecting screen gain and scattering angle of claim 1, wherein: be equipped with motor case (11) on support frame (1), motor case (11) inside is equipped with step motor, the step motor output is connected with rotation axis (21) axle center.

3. The apparatus for detecting screen gain and scattering angle of claim 1, wherein: the circle center of the semicircular arc-shaped sliding chute (22) is the same as that of the semicircular annular detection table (2).

4. The apparatus for detecting screen gain and scattering angle of claim 1, wherein: the upper end of the rotating shaft (21) is rotatably connected with a threaded sleeve (42), the center of the lower end of the hanging plate (4) is connected with a threaded rod (43), and the threaded sleeve (42) is rotatably connected with the threaded rod (43).

5. The apparatus for detecting screen gain and scattering angle of claim 1, wherein: when the adjusting rod (32) is parallel to the transmission rod (24), the irradiation point of the irradiation lamp (34) and the detection point of the detection hole (41) and the luminance meter (5) are on the same horizontal plane.

6. The apparatus for detecting screen gain and scattering angle of claim 1, wherein: telescopic link (35) are installed to mounting bracket (3) one side, telescopic link (35) link to each other with pivot (31) axle center, telescopic link (35) other pot head is equipped with drive ring dish (36).

7. The apparatus for detecting screen gain and scattering angle of claim 6, wherein: the driving ring disc (36) is provided with two limiting holes (37), the side wall of the mounting frame (3) is provided with a limiting rod (38), and when the limiting rod (38) is connected with the two limiting holes (37) respectively, the adjusting rod (32) is parallel or vertical to the transmission rod (24).