KR20010046251A - Convergence adjusting apparatus for color projector - Google Patents

Abstract

PURPOSE: An apparatus for adjusting conversions of a color projector is provided to complete a panel assembly by previously adjusting a collecting point of R,G,B light before a product assembly in the exterior of a projector. CONSTITUTION: An adjusting table(600) is prepared for receiving a panel assembly(400) to be adjusted. An adjusting projection unit(500) is installed on the adjusting table(600) for irradiating a light toward a screen(700) in an adjusting operation. A polarizing beam splitter is provided for responding to R,G,B light in the panel assembly(400). A color prism is installed in the panel assembly(400) for collecting the R,G,B light and outputs the light to the adjusting projection unit(500). Three displaying elements(410,420,430) are installed at the outer side of the panel assembly(400) for reflecting the light and outputting to the inner portion of the panel assembly(400). The displaying elements(410,420,430) are supported by three clampers(101,201,301) provided at the peripheral portion of the adjusting table(600). If the accurate position is searched after adjusting the positions of the displaying elements(410,420,430) and adjusting conversions of R,G,B light, the displaying elements(410,420,430) are bonded to the panel assembly(400). The clampers(101,201,301) are able to be moved in the sixth directions, that is, X,Y,Z axles and the rotation directions thereof by operating devices(100,200,300) for supporting the clampers(101,201,301).

Description

Convergence adjusting apparatus for color projector

The present invention relates to a convergence adjusting device of a color projector.

In general, a color projector that emits red, green, and blue light onto a screen, such as a projection TV, to form a color image, is emitted from the light source 50 as shown in FIG. 1. Three display elements (11, 21) and (31) for reflecting the red, green, and blue light divided by the dichroic mirrors (81, 82), respectively, and converting the light into a light suitable for a desired image. (11) (21) (31) and polarizing beam splitters (10, 20, 30) provided in correspondence with the color prism (40) for converging the three light to be irradiated to the screen 70 side, etc. It is provided. Reference numerals 83 and 84 denote total reflection mirrors. Therefore, in order to obtain a clear and accurate color image quality, the three lights must be accurately converged to the color prism 40 and then projected onto the screen 70 through the projection lens unit 60. Since the polarizing beam splitters 10, 20, 30 and the color prism 40 are normally fixed to the panel assembly 90, the three displays are used to adjust the convergence point of the three colors of light. The positions of the elements 11, 21, and 31 must be adjusted while moving, respectively. After the adjustment, the display elements 11, 21, 31 are bonded to the panel assembly 90 to be fixed. Such adjustment is called convergence adjustment, and in the related art, this convergence adjustment is performed directly inside the product when the product is assembled. That is, an adjustment means for moving the display elements 11, 21, 31 in various directions is installed inside the projector to adjust the convergence while moving the display elements 11, 21, 31 during assembly. It is.

However, in such a configuration, since an adjustment means for convergence adjustment, which is carried out only once, must be provided inside the projector, this causes a cost increase of the product and also a factor of reducing the weight of the product.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a convergence adjusting device for a color projector that enables the panel assembly to be completed by adjusting the convergence point of red, green, and blue light in advance of product assembly outside the projector. There is this.

1 is a view showing a panel assembly structure of a conventional color projector,

2 shows a convergence adjusting device according to the present invention;

3 to 8 are diagrams for explaining the driving principle of the drive mechanism provided in the convergence adjustment device of FIG.

<Explanation of symbols for main parts of drawing>

100,200,300 ... drive mechanism 101,201,301 ... clamp

110 ... first rotational drive means 120 ... second rotational drive means

130 ... 3rd rotary driving means 140 ... 1st reciprocating driving means

150 ... 2 reciprocating means 160 ... 3 reciprocating means

400 ... panel assembly 500 ... projection lens unit for adjustment

600 ... adjustment table 700 ... screen

In order to achieve the above object, the present invention provides a color projector convergence adjusting device for adjusting the position of the display element of the panel assembly so that the tricolor light radiated to the screen through the panel assembly converges to the correct position. An adjustment table to be mounted, an adjustment projection lens unit installed on the adjustment table to irradiate the screen with the three-color light converged through the panel assembly, the display element by clamping the display element in three-dimensional X, Y, and Z axes, and And a driving mechanism capable of moving the display elements in a total of six directions in a rotational direction about each axis, thereby converging the tricolor light radiated onto the screen while clamping and moving the display elements with the driving mechanism. It is characterized by being able to adjust.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 shows an apparatus for adjusting convergence of a color projector according to the present invention.

Referring to the drawings, an adjustment table 600 is provided for seating the panel assembly 400 to be adjusted first, and an adjustment projection for irradiating light toward the screen 700 during the adjustment operation on the adjustment table 600. The lens unit 500 is installed. The panel assembly 400 includes a polarizing beam splitter (not shown) corresponding to red, green, and blue light, and a color prism (not shown) for converging them and sending them to the adjustment projection lens unit 500. In addition, outside the panel assembly 400, three display elements for reflecting the red, green, and blue light emitted from the light source 610 to reflect the desired image to be sent to the inside of the panel assembly 400 ( 410, 420, and 430 are installed, and these display elements 410, 420, and 430 are formed by three clampers 101, 201, and 301 installed around the adjustment table 600. Each is supported. Therefore, after adjusting the position of the display elements 410, 420, 430, and adjusting the convergence of the three-colored light emitted to the screen 700, if the correct position is found, the display elements 410, 420, 430 To the panel assembly 400.

To this end, the clampers 101, 201, and 301 clamping the display elements 410, 420, and 430 are driven by the driving mechanisms 100, 200, and 300 that support them. Movement in six directions is possible in the Y, Z axis direction, the rotation direction around each axis, and the like. The driving mechanisms 100, 200, and 300 are provided one for each of the display elements 410, 420, and 430 for blue, green, and red light, and all have the same structure. Referring to the driving mechanism 100 of the blue light display element 410 as an example, the clamper 101 is supported by the first rotary drive means 110, the first rotary drive means 110 is a second The rotary drive means 120, the second rotary drive means 120 is serially supported by the third rotary drive means (130). First, the first rotation driving means 110 includes a rotation block 111 on which the clamper 101 is supported, and a fixed block 112 coupled to the rotation block 111 and the sliding rail 112a. The rotating block 111 is formed with a gear groove 111a as shown in FIG. 3, and the fixing block 112 is provided with a screw 113 engaged with the gear groove 111a through the inside thereof. It is. Accordingly, when the screw 113 is rotated, the rotation block 111 moves along the sliding rail 112a, thereby rotating the clamper 101 clamping the display element 410 about the X axis of the drawing. will be. Since the pivot block 111 is coupled to the sliding rail 112a formed in a curved shape, even if it is turned 90 ° vertically, it does not occur by itself due to its own weight.

The second rotational drive means 120 has the same structure as the first rotational drive means 110, and merely rotates the rotational direction by 90 degrees. Accordingly, when the screw 123 is rotated, the rotation block 121 supported by the fixed block 122 rotates about the Y axis. In addition, since the entire first rotation driving means 110 is attached to the rotation block 121, the clamper 101 can be rotated about the Y axis.

As shown in FIGS. 2 and 4, the third rotation driving means 130 is fixed to the second rotation driving means 120 and is rotatably installed on the lifting base 141. And a protruding piece 131a protruding from the rotating member 131, an elastic rod 132 elastically supporting the protruding piece 131a, and a protruding piece 131a in an opposite direction of the elastic rod 132. ), The screw 133 is held down. Accordingly, when the screw 133 is rotated and the projection piece 131a is pressed down, the elastic rod 132 is compressed and the rotating member 131 is rotated, and when the screw 133 rotates in the opposite direction, As the elastic rod 132 is restored, the rotating member 131 is reversed by pushing up the protruding piece 131a. That is, when the screw 133 in contact with the protruding piece 131a is rotated, the second rotation driving means 120 to the clamper 101 may be rotated about the Z axis.

Next, the first, second and third rotation driving means 110, 120 and 130 are lifted by the first reciprocating driving means 140. First, the elevating base 141 supporting the first, second and third rotation driving means 110, 120, 130 is supported by the boss 154 provided in the first base 151 below the elevating base 141. It is. As shown in FIG. 5, the first base 151 is provided with a pivoting lever 143 that is rotated by a screw 142 to contact the protrusion 141a provided on the lower surface of the elevating base 141. . Accordingly, when the screw 142 is advanced, the front end portion of the pivoting lever 143 is rotated by pushing one end of the pivoting lever 143. As a result, the other end of the pivoting lever 143 pushes the projection 141a. 141 rises in the X-axis direction of the drawing. On the contrary, when the screw 142 is reversed, the force pushing the rotation lever 143 is released, and the lifting base 141 is lowered by its own weight. On the other hand, unlike this, by installing a tension spring that pulls the lifting base 141 inside the boss 154 of the first base 151, the lifting base 141 may be lowered by elastic restoring force instead of its own weight.

Next, the second reciprocating driving means 150 for moving the first reciprocating driving means 140 is, as shown in Figures 2 and 6, the second support slidably supported by the second base (161) It includes a first base 151 and a screw 153 is installed on the side wall of the second base 161 to press the protrusion 152 provided in the first base 151. The first and second bases 151 and 161 are pulled together by the tension spring 155 as shown in FIG. Accordingly, when the screw 153 is advanced to press the protruding jaw 152, the first base 151 slides on the second base 161 and moves in the Y-axis direction. By the restoring force of the tension spring 155 is moved in the opposite direction.

Next, the third reciprocating driving means 160 for moving the second reciprocating driving means 150 has the same configuration as the second reciprocating driving means 150, as shown in FIGS. 2 and 7. It is provided on the third base 171 is provided with a screw 163 for pressing the protruding jaw 162 of the second base 161 and the tension spring 164 connecting the second, third base 161, 171. Only the driving direction is 90 ° to the driving direction of the second reciprocating driving means 150.

Reference numeral 180 is a main base on which the third base 171 is mounted, which is forward or backward by the air cylinder 190 to the adjustment table 600 side as shown in FIG. 8. An end of the cylinder rod 190a of the air cylinder 190 is attached to the main base 180. This is not intended to perform fine convergence adjustment, but is used to quickly access the panel assembly 400 after clamping the display element 410 to the clamper 101 at the beginning of the adjustment operation. Reference numerals 191 and 192 denote inlet and outlet ports for allowing air to enter and exit the air cylinder 190.

Therefore, after clamping the display elements 410, 420, and 430 on the clampers 101, 201, and 301 as described above, the display elements 410 have the driving mechanisms 100, 200, and 300 as described above. After adjusting the convergence by combining red, green, and blue light while moving the 420 and 430 in six directions, bonding the display elements 410, 420, and 430 to the panel assembly 400 at the adjusted positions. Just do it. And the panel assembly 400 has been adjusted and bonded in this way can be mounted directly to the product can be used without additional adjustment.

As described above, the apparatus for adjusting the convergence of the color projector according to the present invention allows the convergence to be adjusted in advance on the adjustment table before the panel assembly is installed in the product. You do not need to install. Therefore, the weight of the product can be reduced, and the manufacturing cost can be reduced.

It is to be understood that the invention is not limited to that described above and illustrated in the drawings, and that more modifications and variations are possible within the scope of the following claims.

Claims (4)

In the convergence adjustment device of the color projector for adjusting the position of the display element of the panel assembly so that the tri-color light irradiated to the screen through the panel assembly to the correct position, And a panel projector mounted on an adjustment table provided with a separate projection lens unit for adjusting the position of the display element while irradiating three colors of light onto the screen through the projection lens unit for adjustment. In the convergence adjustment device of the color projector for adjusting the position of the display element of the panel assembly so that the tri-color light irradiated to the screen through the panel assembly to the correct position, An adjustment table on which the panel assembly to be adjusted is mounted, An adjustment projection lens unit installed on the adjustment table to irradiate the screen with three colors of light converged through the panel assembly; And a driving mechanism for clamping the display element to move the display element in a total of six directions in the X, Y, and Z axis directions on a three-dimensional plane and a rotational direction about each axis thereof. And the driving mechanism is configured to adjust the convergence of the three colors of light radiated onto the screen while clamping and moving the display element. The method of claim 2, The drive mechanism, A clamper for clamping the display element; Rotary driving means for rotating the clamper about each of X, Y, and Z axes; And a reciprocating driving means for reciprocating the rotary driving means in the X, Y, and Z axis directions. The method of claim 3, The rotation driving means may include: first rotating driving means for rotating the clamper about the X axis, second rotating driving means for rotating the first rotating driving means about the Y axis, and Z for the second rotating driving means. A third rotational drive means for rotating about an axis, The reciprocating drive means includes a first reciprocating drive means for moving the third rotary drive means in the X axis direction, a second reciprocating drive means for moving the first reciprocating drive means in the Y axis direction, and the second reciprocating force. And a third reciprocating driving means for moving the driving means in the Z-axis direction.