Projection screen speckle measuring device

Abstract

The utility model provides a projection screen speckle measuring device comprising a projector used for projecting images; the projection screen assembly comprises a mounting frame and a to-be-detected projection screen, the position of the mounting frame can be adjusted relative to the position of the projector, the to-be-detected projection screen is arranged on the mounting frame, and the to-be-detected projection screen is used for receiving the image; and the image acquisition unit is used for acquiring a display image of the projection screen to be detected. The projection screen speckle measuring device can measure and record speckles on the projection screen, and can provide basis for eliminating the speckles on the projection screen.

Description

Technical Field

[0001] The utility model relates to the technical field of screen detection, in particular to a projection screen speckle measurement device. Background Art

[0002] Laser projection display system includes laser projector and projection screen, which can be used for video projection. One of the factors in evaluating laser projection display system is the evaluation of laser speckle. Laser speckle refers to small bright spots or noise that appear on the projected image.

[0003] The appearance of laser speckle will be affected by the laser projector itself. The common three-color laser projector will produce more obvious speckle, and the projection screen itself as the carrier of the projected image will also cause speckle. Different projection screens have different effects on speckle, so it is necessary to measure the speckle generated on the projection screen to provide a basis for eliminating the speckle on the projection screen. Utility Model Content

[0004] In view of this, the utility model aims to provide a projection screen speckle measurement device, so as to be able to measure and record the speckle on the projection screen.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A projection screen speckle measurement device comprises a projector for projecting an image; a projection screen assembly comprising a mounting frame adjustable relative to the projector, and a projection screen to be detected arranged on the mounting frame, wherein the projection screen to be detected is used to receive the image; and an image acquisition unit is used to acquire a display image of the projection screen to be detected.

[0007] Furthermore, it also includes a workbench, and the projector and the image acquisition unit are both arranged on the workbench; the projector is arranged on the workbench through an adjustment unit, and the adjustment unit includes a first adjustment member for adjusting the projector along the X direction of the workbench, a second adjustment member for adjusting the projector along the Y direction of the workbench, and a third adjustment member for adjusting the projector along the Z direction of the workbench.

[0008] Furthermore, the first adjusting member, the second adjusting member and the third adjusting member are all linear modules.

[0009] Furthermore, the projection screen assembly includes a base, a screen bracket arranged on the base, and a clamping component arranged on the screen bracket.

[0010] Furthermore, the screen bracket includes a first support rod arranged on the base, a second support rod arranged on the base, and a third support rod slidably arranged on the first support rod and the second support rod.

[0011] Furthermore, the clamping assembly includes a slot provided on the projection screen to be detected and a plug provided on the third support rod, and the projection screen to be detected can be clamped on the third support rod through the slot.

[0012] Furthermore, the plug is slidably arranged on the third support rod.

[0013] Furthermore, the base is provided with universal wheels.

[0014] Furthermore, it also includes a controller arranged on the workbench, the controller is electrically connected to the adjustment unit, and the controller is configured to drive the adjustment unit to operate.

[0015] Furthermore, the projector is a three-color laser projector.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The projection screen speckle measurement device of the utility model adjusts the distance between the projection screen to be detected and the projector through a mounting frame, so that the projection screen to be detected can receive the image projected by the projector, and collects the display image of the projection screen to be detected through an image acquisition unit, thereby recording the display effect of the projection screen to be detected.

[0018] In addition, the spatial position of the projector can be adjusted by the first adjusting member, the second adjusting member and the third adjusting member, so that the projector can always be aligned with the center of the projection screen when projecting on different projection screens. The linear module is adopted, which is easy to purchase, simple in structure, and convenient for design implementation. The projection screen can be fixed on the screen bracket by the clamping assembly, and the structure is simple, which is convenient for design implementation. The screen bracket is composed of the first support rod, the second support rod and the third support rod. On the premise of ensuring that the projection screen can be supported, the structure is simplified, which is convenient for design implementation.

[0019] In addition, the slot installed on the projection screen cooperates with the plug installed on the support rod, so that the projection screen can be positioned and installed, and it is easy to disassemble, which is conducive to design implementation. The plug sliding setting is conducive to adjusting the position of the plug accordingly after changing different projection screens, which is conducive to design implementation. The universal wheel allows the base to be moved relative to the projector, which has a simple structure and is easy to operate, which is conducive to design implementation. The setting of the controller makes the operation of the adjustment unit easier to control, and it is easy to operate, which is conducive to design implementation. The use of a three-color laser projector can more clearly show the speckle of the projection screen, and the projection effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the projection screen speckle measurement device according to an embodiment of the utility model;

[0022] Figure 2 It is a partial structural schematic diagram of the projection screen speckle measurement device according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic structural diagram of a projection screen assembly according to an embodiment of the utility model;

[0024] Figure 4 for Figure 3 A magnified image of point A;

[0025] Description of reference numerals:

[0026] 1. Projector;

[0027] 2. Mounting frame; 21. Base;

[0028] 22. screen bracket; 221. first support rod; 222. second support rod; 223. third support rod;

[0029] 23. Clamping assembly; 231. Socket; 232. Plug;

[0030] 3. Projection screen to be tested;

[0031] 4. Image acquisition unit; 5. Workbench;

[0032] 6. Adjustment unit; 601. First adjustment member; 602. Second adjustment member; 603. Third adjustment member;

[0033] 7. Universal wheel. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] This embodiment relates to a projection screen speckle measurement device, which can measure and record speckles on the projection screen.

[0039] In terms of overall structure, combined Figures 1 to 3 As shown, the projection screen speckle measurement device of this embodiment includes:

[0040] The projector 1 is used for projecting images.

[0041] The projection screen assembly comprises a mounting frame 2 whose position is adjustable relative to the projector 1, and a projection screen 3 to be detected arranged on the mounting frame 2, wherein the projection screen 3 to be detected is used for receiving images.

[0042] The image acquisition unit 4 is used to acquire the display image of the projection screen 3 to be detected.

[0043] At this time, as set above, the distance between the projection screen 3 to be detected and the projector 1 is adjusted by the mounting bracket 2, so that the projection screen 3 to be detected can receive the image projected by the projector 1, and the display image of the projection screen 3 to be detected is collected by the image acquisition unit 4, so that the display effect of the projection screen 3 to be detected can be recorded.

[0044] Based on the above overall introduction, an exemplary structure of the projection screen speckle measurement device of this embodiment can be referred to Figures 1 to 3 As shown, at this time, the projection screen speckle measurement device of the preferred embodiment further includes a workbench 5 , and the projector 1 and the image acquisition unit 4 are both arranged on the workbench 5 .

[0045] Specifically, the projector 1 is arranged on the workbench 5 through the adjustment unit 6. The adjustment unit 6 includes a first adjustment member 601 for adjusting the projector 1 along the workbench 5X direction, a second adjustment member 602 for adjusting the projector 1 along the workbench 5Y direction, and a third adjustment member 603 for adjusting the projector 1 along the workbench 5Z direction. The spatial position of the projector 1 can be adjusted through the first adjustment member 601, the second adjustment member 602 and the third adjustment member 603, so that the projector 1 can always be aligned with the center of the projection screen when projecting to different projection screens.

[0046] It can be understood that the image acquisition unit 4 is fixed on the workbench 5, and the projector 1 is arranged on the workbench 5 through the adjustment unit 6, so that the spatial position of the projector 1 is adjustable, and the image acquisition unit 4 only needs to be arranged toward the projection screen to be able to capture the display image of the projection screen.

[0047] Furthermore, as a preferred implementation, the first adjustment member 601, the second adjustment member 602 and the third adjustment member 603 of this embodiment are all linear modules. The use of linear modules is easy to purchase, has a simple structure, and is conducive to design and implementation.

[0048] It is worth mentioning that, as a preferred arrangement, combined with Figure 1 and Figure 2 As shown, in this embodiment, the first adjusting member 601 is arranged on the workbench 5 , the second adjusting member 602 is arranged on the first adjusting member 601 , and the third adjusting member 603 is arranged on the second adjusting member 602 .

[0049] Furthermore, as a preferred arrangement, the first adjusting member 601 in this embodiment includes two linear modules arranged in parallel, and the second adjusting member 602 is arranged between the two linear modules of the first adjusting member 601 .

[0050] In addition, as a preferred embodiment, Figure 1 and Figure 3 As shown, the mounting frame 2 of this embodiment includes a base 21, a screen bracket 22 arranged on the base 21, and a clamping assembly 23 arranged on the screen bracket 22. The projection screen can be fixed on the screen bracket 22 through the clamping assembly 23, and the structure is simple, which is convenient for design and implementation.

[0051] Preferably, combined Figure 3As shown, the screen bracket 22 in this embodiment includes a first support rod 221 arranged on the base 21, a second support rod 222 arranged on the base 21, and a third support rod 223 slidably arranged on the first support rod 221 and the second support rod 222. The screen bracket 22 is composed of the first support rod 221, the second support rod 222 and the third support rod 223. On the premise of ensuring that the projection screen can be supported, the structure is simplified to facilitate design implementation.

[0052] In addition, as a preferred embodiment, the clamping assembly 23 in this embodiment includes a slot 231 provided on the projection screen 3 to be detected, and a plug 232 provided on the third support rod 223, and the projection screen 3 to be detected can be clamped on the third support rod 223 through the slot 231. The slot 231 installed on the projection screen and the plug 232 installed on the support rod cooperate with each other, so that the projection screen can be positioned and installed, and it is easy to disassemble, which is beneficial to the design implementation.

[0053] Moreover, as a preferred implementation, the plug 232 in this embodiment can be slidably arranged on the third support rod 223. The sliding arrangement of the plug 232 is conducive to correspondingly adjusting the position of the plug 232 after replacing different projection screens, which is conducive to design implementation.

[0054] Specifically, combined with Figure 3 and Figure 4 As shown, the slot 231 in this embodiment is a C-shaped slot, both ends of the slot 231 are fixed on the back of the projection screen 3 to be detected, and the plug 232 is slidably arranged on the third support rod 223 and can be fixed in position on the third support rod 223 by bolts.

[0055] In addition, as a preferred embodiment, Figures 1 to 3 As shown, the base 21 in this embodiment is provided with universal wheels 7, and the base 21 can be moved relative to the projector 1 through the universal wheels 7, which has a simple structure, is easy to operate, and is conducive to design and implementation.

[0056] It can be understood that the number of universal wheels 7 arranged on the base 21 in this embodiment is four, and the four universal wheels 7 are evenly arranged along the edge of the base 21. Of course, the number of universal wheels 7 can also be two, three, five, or six, as long as the stable movement and support of the base 21 are met.

[0057] In addition, as a preferred implementation, the projection screen measuring device in this embodiment also includes a controller arranged on the workbench 5, the controller is electrically connected to the adjustment unit 6, and the controller is configured to drive the adjustment unit 6 to operate. The setting of the controller makes the operation of the adjustment unit 6 easier to control and easy to operate, which is conducive to design implementation.

[0058] Furthermore, as a preferred implementation, the projector 1 in this embodiment is a three-color laser projector. The use of a three-color laser projector can more clearly show the speckle of the projection screen and achieve a better projection effect.

[0059] When the present embodiment is used, firstly, a slot 231 is arranged behind the projection screen 3 to be detected, and the position of the plug 232 on the third support rod 223 is adjusted to correspond to the position of the slot 231 on the projection screen 3 to be detected, and then the projection screen 3 to be detected is fixed on the screen bracket 22, and the distance between the projection screen 3 to be detected and the projector 1 is adjusted by moving the base 21, and then the spatial position of the projector 1 is adjusted by the first adjusting member 601, the second adjusting member 602 and the third adjusting member 603, so as to align the projection center of the projector 1 with the screen, and then the image acquisition unit 4 is controlled to acquire the display image of the projection screen 3 to be detected, so as to record the speckle situation on the projection screen 3 to be detected.

[0060] The projection screen measuring device in this embodiment collects the display image of the projection screen 3 to be detected through the image acquisition unit 4, and records the display image of the projection screen 3 to be detected, which can assist R&D personnel in comparing and judging the speckle situation of the projection screen, thereby helping R&D personnel to further develop and improve the display effect of the detected projection screen.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A projection screen speckle measurement device, characterized in that: include: A projector (1) for projecting images; A projection screen assembly, comprising a mounting frame (2) whose position is adjustable relative to the projector (1), and a projection screen (3) to be detected arranged on the mounting frame (2), wherein the projection screen (3) to be detected is used to receive the image; An image acquisition unit (4) is used to acquire the display image of the projection screen (3) to be detected.

2. The projection screen speckle measurement device according to claim 1, characterized in that: It also comprises a workbench (5), on which the projector (1) and the image acquisition unit (4) are both arranged; The projector (1) is arranged on the workbench (5) via an adjustment unit (6), wherein the adjustment unit (6) comprises a first adjustment member (601) for adjusting the projector (1) along the X direction of the workbench (5), a second adjustment member (602) for adjusting the projector (1) along the Y direction of the workbench (5), and a third adjustment member (603) for adjusting the projector (1) along the Z direction of the workbench (5).

3. The projection screen speckle measurement device according to claim 2, characterized in that: The first adjusting member (601), the second adjusting member (602) and the third adjusting member (603) are all linear modules.

4. The projection screen speckle measurement device according to claim 2, characterized in that: The mounting frame (2) comprises a base (21), a screen bracket (22) arranged on the base (21), and a clamping assembly (23) arranged on the screen bracket (22).

5. The projection screen speckle measurement device according to claim 4, characterized in that: The screen bracket (22) comprises a first support rod (221) arranged on the base (21), a second support rod (222) arranged on the base (21), and a third support rod (223) slidably arranged on the first support rod (221) and the second support rod (222).

6. The projection screen speckle measurement device according to claim 5, characterized in that: The clamping assembly (23) comprises a slot (231) provided on the projection screen (3) to be detected, and a plug (232) provided on the third support rod (223), and the projection screen (3) to be detected can be clamped on the third support rod (223) through the slot (231).

7. The projection screen speckle measurement device according to claim 6, characterized in that: The plug (232) is slidably arranged on the third support rod (223).

8. The projection screen speckle measurement device according to claim 4, characterized in that: The base (21) is provided with a universal wheel (7).

9. The projection screen speckle measurement device according to any one of claims 2 to 8, characterized in that: It also comprises a controller arranged on the workbench (5), the controller being electrically connected to the adjustment unit (6), and the controller being configured to be able to drive the adjustment unit (6) to operate.

10. The projection screen speckle measurement device according to claim 9, characterized in that: The projector (1) is a three-color laser projector.

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