Device and method for detecting and adjusting the parallelism between display screen and lens interface end surface

Abstract

The invention discloses a device and method for detecting and adjusting the parallelism between a display screen and an end face of a lens interface, and mainly relates to the field of projection display technology; the device and method include: a cylindrical shell, one end of the cylindrical shell is provided with a flange, and the flange is perpendicular to the axis of the cylindrical shell; a base, the base is installed at the end of the cylindrical shell away from the flange; a laser, the laser is installed on the base, and the base is provided with an adjustment device for adjusting the inclination of the axis of the laser; an observation plate, the observation plate is located at the end of the laser away from the base, and a light outlet adapted to the laser is provided in the middle of the observation plate, and the cylindrical shell is provided with an observation window adapted to the observation plate; a plane mirror; a U-shaped gasket, and the U-shaped gasket is adapted to the screw on the optical machine mounting column; the invention can quickly complete the correction of the lens, can ensure the parallelism between the projection chip and the lens mounting end face, and ensure the projection quality of the projector.

Description

Technical Field

[0001] The invention relates to the field of projection display technology, in particular to a device and method for detecting and adjusting the parallelism between a display screen and an end face of a lens interface. Background Art

[0002] The parallelism between the projection chip of the projector and the lens mounting end face will affect the resolution of the displayed image. The error of this parallelism is caused by the assembly tolerance, production tolerance, production tolerance of the display chip, and installation tolerance of the optical machine housing and the projection lens. To ensure the projection quality of the projector, correction is required when installing the lens. The optical machine housing is provided with an optical machine mounting column for mounting the lens, and the lens and the optical machine mounting column are connected by screws. In the prior art, the gasket is generally installed between the lens and the optical machine mounting column for adjustment based on the experience of the staff, which requires high professional and technical capabilities of the staff and has low correction efficiency. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art and to provide a device and method for detecting and adjusting the parallelism between a display screen and an end face of a lens interface, which can quickly complete the correction of the lens, ensure the parallelism between a projection chip and an end face of the lens installation, and ensure the projection quality of the projector.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface, comprising:

[0006] A cylindrical shell, one end of which is provided with a flange, and the flange is perpendicular to the axis of the cylindrical shell;

[0007] A base, the base being mounted on an end of the cylindrical shell away from the flange;

[0008] A laser, the laser being mounted on a base, the base being provided with an adjustment device for adjusting the inclination of the axis of the laser;

[0009] An observation plate, the observation plate is located at one end of the laser away from the base, and a light outlet adapted to the laser is provided in the middle of the observation plate, and an observation window adapted to the observation plate is provided on the cylindrical shell;

[0010] A plane mirror, wherein the plane mirror is detachably connected to the flange;

[0011] A U-shaped gasket is adapted to the screws on the optical machine mounting column.

[0012] Preferably, there are multiple U-shaped gaskets, and the thickness of each U-shaped gasket is 0.05 mm.

[0013] Preferably, a handle is provided at one end of the U-shaped gasket away from the U-shaped opening.

[0014] Preferably, the laser is a red light laser.

[0015] Preferably, the adjustment device includes a laser mounting seat, a universal connector, and an adjustment screw. The laser is mounted on the laser mounting seat. The laser mounting seat is located on a side of the base close to the flange. The laser mounting seat is connected to the base through a universal connector. There are three adjustment screws. The three adjustment screws are arranged in a circular array on the base. A threaded through hole corresponding to the adjustment screw is provided on the base. One end of the adjustment screw abuts against the laser mounting seat.

[0016] A method for using a device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface comprises the following steps:

[0017] S1. Install the plane mirror on the flange;

[0018] S2, the laser is powered on, the light emitted by the laser is directed to the plane mirror and then reflected by the plane mirror;

[0019] S3, judging whether the light reflected by the plane mirror coincides with the light outlet, if so, removing the plane mirror; if not, adjusting the inclination of the axis of the laser by the adjusting device until the light reflected by the plane mirror coincides with the light outlet, and then removing the plane mirror;

[0020] S4. Use screws to install the flange on the optical machine housing to be tested;

[0021] S5, the laser is powered on, and the light emitted by the laser is directed toward the projection display chip and then reflected by the projection display chip;

[0022] S6. Determine whether the light reflected by the projected display chip coincides with the light outlet. If so, the parallelism between the display screen and the end face of the lens interface complies with the regulations. If not, determine the optical machine mounting column with size deviation by observing the position of the light-emitting point on the board, loosen the screws on the optical machine mounting column, and insert a reasonable number of U-shaped gaskets from one side to correct the deviation until the reflected light coincides with the incident light. The correction is then in place.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The adjustment device of the present invention is used to adjust the inclination angle of the axis centerline of the laser. When in use, it is necessary to first use the adjustment device and the plane mirror to correct the laser so that the axis centerline of the laser coincides with the axis centerline of the cylindrical shell; after the laser is corrected, the flange and the optical machine mounting column are screwed together, the laser is powered on, and the light emitted by the laser is emitted to the projection display chip and then reflected by the projection display chip to determine whether the reflected light coincides with the light outlet. If so, the parallelism of the display screen and the end face of the lens interface is compliant; if not, the optical machine mounting column with dimensional deviation is determined by observing the position of the light-emitting point on the board, the screws on the optical machine mounting column are loosened, and a reasonable number of U-shaped gaskets are inserted from one side to correct the deviation until the reflected light coincides with the incident light. The correction is in place without the need for strong professional and technical capabilities, and the correction of the lens can be completed quickly, the parallelism of the projection chip and the lens mounting end face can be guaranteed, and the projection quality of the projector can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Attached Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention;

[0026] Attached Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention;

[0027] Attached Figure 3 This is a schematic diagram when correcting the laser;

[0028] Attached Figure 4 Yes Figure 1 A magnified view of part A;

[0029] Attached Figure 5 It is a schematic diagram of the structure of a U-shaped gasket;

[0030] Attached Figure 6 It is a structural diagram of the regulating device.

[0031] Numbers in the attached drawings: 1. cylindrical shell; 11. flange; 2. base; 21. laser mounting seat; 22. universal connector; 23. adjusting screw; 3. laser; 4. observation plate; 41. light outlet; 42. observation window; 5. plane mirror; 6. U-shaped gasket; 61. optical machine mounting column; 62. screw; 63. handle; 64. optical machine shell. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0033] Embodiment 1: As attached Figure 1-6As shown, the present invention is a device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface, comprising:

[0034] A cylindrical shell 1, one end of which is provided with a flange 11, the flange 11 and the cylindrical shell 1 may be of an integrated structure, or the flange 11 may be welded to the cylindrical shell 1, the flange 11 is perpendicular to the axis of the cylindrical shell 1, and the axis of the flange 11 coincides with the axis of the cylindrical shell 1;

[0035] A base 2, wherein the base 2 is mounted on an end of the cylindrical shell 1 away from the flange 11. The base 2 and the cylindrical shell 1 may be connected by threads, or the base 2 may be embedded in the end of the cylindrical shell 1;

[0036] A laser 3, wherein the laser 3 is mounted on a base 2, and an adjusting device for adjusting the inclination of the axis of the laser 3 is provided on the base 2;

[0037] Preferably, in order to facilitate the adjustment of the inclination angle of the axis of the laser, the adjustment device includes a laser mounting seat 21, a universal connector 22, and an adjustment screw 23. The laser 3 is mounted on the laser mounting seat 21. A mounting hole adapted to the laser 3 is provided on the laser mounting seat 21. The laser 3 is embedded in the mounting hole. The laser mounting seat 21 is located on a side of the base 2 close to the flange 11. The laser mounting seat 21 is connected to the base 2 via a universal connector 22. The universal connector 22 can be a universal joint or a By using an elastic connector, the deformation of the elastic connector can be used to adjust the inclination angle of the laser mounting seat 21. There are three adjusting screws 23, which are arranged in a circular array on the base 2. The base 2 is provided with a threaded through hole adapted to the adjusting screw 23. One end of the adjusting screw 23 abuts against the laser mounting seat 21. By rotating different adjusting screws 23, the inclination angle of the laser mounting seat 21 can be adjusted, thereby adjusting the inclination angle of the axis centerline of the laser, and the adjustment is convenient.

[0038] An observation plate 4, the observation plate 4 is located at one end of the laser 3 away from the base 2, the observation plate 4 and the cylindrical shell 1 can be of an integrated structure, or the observation plate 4 can be embedded in the cylindrical shell 1, and a light outlet 41 adapted to the laser 3 is provided in the middle of the observation plate 4, the axis of the light outlet 41 coincides with the axis of the cylindrical shell 1, and an observation window 42 adapted to the observation plate 4 is opened on the cylindrical shell 1;

[0039] A plane mirror 5, wherein the plane mirror 5 is detachably connected to the flange 11, and a screw mounting hole may be provided on the plane mirror 5, and the plane mirror 5 is connected to the flange 11 by screws 62;

[0040] The U-shaped gasket 6 is adapted to the screw 62 on the optical machine mounting column 61 .

[0041] Preferably, in order to facilitate the correction of the lens, the number of the U-shaped gaskets 6 is multiple, and the thickness of the U-shaped gasket 6 is 0.05 mm.

[0042] Furthermore, in order to facilitate picking up the U-shaped gasket, a handle 63 is provided at one end of the U-shaped gasket 6 away from the U-shaped opening.

[0043] Preferably, in order to facilitate observation of the reflection point, the laser 3 is a red light laser.

[0044] When the present invention is used, the laser 3 needs to be calibrated first so that the axis of the laser coincides with the axis of the cylindrical housing 1. Figure 3 As shown, the plane mirror 5 is mounted on the flange 11 by means of screws 62, the laser 3 is powered on, and the light emitted by the laser 3 is projected toward the plane mirror 5 through the light outlet 41 and then reflected by the plane mirror 5. If the reflected light coincides with the light outlet 41, the axis of the laser coincides with the axis of the cylindrical shell 1, and the use requirements are met; if the reflected light is irradiated on the observation plate 4, that is, there is a reflective spot on the observation plate 4, the axis of the laser does not coincide with the axis of the cylindrical shell 1, and the axis of the laser can be adjusted to coincide with the axis of the cylindrical shell 1 by adjusting the corresponding adjustment screws 23; after the laser 3 is calibrated, the plane mirror 5 is removed, and the flange 11 is mounted on the optical machine housing 64 to be detected by means of screws 62, and the light emitted by the laser 3 is irradiated on the projection display chip 7 (such as an LCos display screen, the installation position of the laser must satisfy the consistency of the laser polarization state and the polarization direction accepted by the LCos), and if the light coincides with the light-emitting position after being reflected, the parallelism of the two is compliant. If there is a large deviation between the reflected light and the emitted light position, the parallelism is not in compliance. The dimensional deviation of the optical machine mounting column 61 can be determined by the position of the light emission. The screw 62 at the corresponding position can be loosened and a reasonable number of U-shaped gaskets 6 can be inserted from one side to correct the deviation (see the attached figure). Figure 4 ), when the reflected light coincides with the incident light, the lens correction can be completed quickly to ensure the parallelism between the projection chip and the lens mounting end surface.

[0045] Embodiment 2: A method for using a device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface, comprising the steps of:

[0046] S1, installing the plane mirror 5 on the flange 11;

[0047] S2, the laser 3 is powered on, and the light emitted by the laser 3 is directed toward the plane mirror 5 and then reflected by the plane mirror 5;

[0048] S3, judging whether the light reflected by the plane mirror 5 coincides with the light outlet 41, if so, removing the plane mirror 5; if not, adjusting the inclination angle of the axis of the laser 3 by the adjusting device until the light reflected by the plane mirror 5 coincides with the light outlet 41, and then removing the plane mirror 5;

[0049] S4, using screws 62 to install the flange 11 on the optical machine housing 64 to be tested;

[0050] S5, the laser 3 is powered on, and the light emitted by the laser 3 is emitted to the projection display chip 7 and then reflected by the projection display chip 7;

[0051] S6. Determine whether the light reflected by the projection display chip 7 coincides with the light outlet 41. If so, the parallelism between the display screen and the end face of the lens interface complies with the regulations. If not, determine the optical machine mounting column 61 with dimensional deviation by the position of the light-emitting point on the observation board 4, loosen the screw 62 on the optical machine mounting column 61, and insert a reasonable number of U-shaped gaskets 6 from one side to correct the deviation until the reflected light coincides with the incident light, and then the correction is in place.

Claims

1. A device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface, characterized in that: include: A cylindrical shell (1), wherein one end of the cylindrical shell (1) is provided with a flange (11), and the flange (11) is perpendicular to the axis of the cylindrical shell (1); A base (2), the base (2) being mounted on an end of the cylindrical housing (1) away from the flange (11); A laser (3), the laser (3) being mounted on a base (2), the base (2) being provided with an adjustment device for adjusting the inclination angle of the axis of the laser (3); an observation plate (4), the observation plate (4) being located at one end of the laser (3) away from the base (2), and a light outlet (41) adapted to the laser (3) being provided in the middle of the observation plate (4), and an observation window (42) adapted to the observation plate (4) being provided on the cylindrical housing (1); A plane mirror (5), wherein the plane mirror (5) is detachably connected to the flange (11); A U-shaped gasket (6), wherein the U-shaped gasket (6) is adapted to fit the screw (62) on the optical machine mounting column (61).

2. The device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface according to claim 1, characterized in that: The number of the U-shaped gaskets (6) is plural, and the thickness of the U-shaped gasket (6) is 0.05 mm.

3. The device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface according to claim 1, characterized in that: The U-shaped gasket (6) is provided with a handle (63) at one end away from the U-shaped opening.

4. The device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface according to claim 1, characterized in that: The laser (3) is a red light laser.

5. The device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface according to claim 1, characterized in that: The adjustment device comprises a laser mounting seat (21), a universal connector (22), and an adjustment screw (23); the laser (3) is mounted on the laser mounting seat (21); the laser mounting seat (21) is located on a side of the base (2) close to the flange (11); the laser mounting seat (21) is connected to the base (2) via the universal connector (22); there are three adjustment screws (23); the three adjustment screws (23) are arranged in a circular array on the base (2); a threaded through hole adapted to the adjustment screw (23) is provided on the base (2); one end of the adjustment screw (23) abuts against the laser mounting seat (21).

6. A method for using the device for detecting and adjusting the parallelism between a display screen and an end face of a lens interface as claimed in any one of claims 1 to 5, characterized in that: Includes steps: S1. Install the plane mirror (5) on the flange (11); S2, the laser (3) is powered on, and the light emitted by the laser (3) is directed toward the plane mirror (5) and then reflected by the plane mirror (5); S3, determining whether the light reflected by the plane mirror (5) coincides with the light outlet (41); if so, removing the plane mirror (5); if not, adjusting the inclination angle of the axis of the laser (3) by means of an adjustment device until the light reflected by the plane mirror (5) coincides with the light outlet (41), and then removing the plane mirror (5); S4. Using screws (62), the flange (11) is mounted on the optical machine housing (64) to be tested; S5, the laser (3) is powered on, and the light emitted by the laser (3) is directed toward the projection display chip (7) and then reflected by the projection display chip (7); S6. Determine whether the light reflected by the projection display chip (7) coincides with the light outlet (41). If so, the parallelism between the display screen and the end face of the lens interface is in compliance with the regulations. If not, determine the optical machine mounting column (61) with the size deviation by observing the position of the light-emitting point on the observation board (4), loosen the screw (62) on the optical machine mounting column (61), and insert a reasonable number of U-shaped gaskets (6) from one side to correct the deviation until the reflected light coincides with the incident light. The correction is then in place.

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