KR20040063643A - Tilt Controls Structure of DLP Optical engine - Google Patents

Abstract

PURPOSE: A structure for adjusting a tilt of a DLP(Digital Light Processing) optical engine is provided to improve adjustment workability by being formed by one body. CONSTITUTION: An optical engine(110) is fixed in an upper portion of an optical engine supporter(120). A base supporter(130) fixes the optical engine supporter(120). A spacer unit(150) has a variable spacer which adjusts and fixes the height of the base supporter(130) and the optical engine supporter(120). A guide pin(131) is formed in the center of a rear surface of the base supporter(130). Nuts(133) are formed at left and right sides of the guide pin(131) for connecting a connection member. An attachment hole is formed in left and right positions of a front surface of the base supporter(130) for attaching the spacer unit(150). A tap hole is formed in the circumference of the attachment hole for connecting to the connection member.

Description

Tilt Controls Structure of DLP Optical Engine

The present invention relates to a DLP projection TV, and more particularly, to a tilt adjustment structure of a DLP optical engine having improved controllability by applying an integrated tilt structure in a tilt adjustment process of an optical engine used in a DLP projection TV. will be.

In general, an optical engine used in a projection television or the like may be classified into a PRT (CRT) method, an LCD method, a digital light processing (DLP) method, and the like, according to the characteristics thereof.

First, the most commonly used method is the PRT (CRT) method. This creates a desired screen in a small, fairly bright CRT and then projects it through the lens.

In addition, the PRT method may be divided into one tube having one PRT and three tubes having three PRTs of red, green, and blue.

The PRT (CRT) method is gradually decreasing in use due to a decrease in brightness, difficulty in adjusting a deflection according to a frequency when inputting a personal computer, and difficulty in focusing.

In recent years, the LCD system is the most widely used method.

This is a method of passing the light generated by the lamp which emits powerful light through the transmissive LCD panel and then projecting it with the lens. Not only can it be significantly downsized, it also has the advantage of making images relatively bright.

Of course, it is difficult to realize natural color reproduction or high contrast ratio in the LCD method, and the gamma characteristic is also disadvantageous, but it has advantages such as price-performance ratio, excellent personal computer input compatibility, small size, and bright screen. Because of this, its use is increasing.

Lastly, there is a digital light processing (DLP) method, which uses a digital micro mirror device (DMD) chip developed by Texas Instruments.

The DMD (Digital Micro Mirror Device) is a semiconductor optical switch incorporating a fine driving mirror, and a fine aluminum alloy mirror is installed at the top of one cell of the static random access memory (SRAM), and the fine mirror is located at the bottom of the cell. It is activated by the electrostatic field action of the memory.

The DMD method may also be divided into a single plate type and a three plate type which separately manages red, green, and blue colors, but all of the above methods have a very excellent color reproducibility in a completely digital manner as compared to the conventional method.

In addition, since the long life, high clarity, and the input digital video signal can be directly reproduced without any correction, lighting that can reproduce the original image is highly appreciated.

The DLP-type optical engine uses a lamp which is an external light source. A schematic configuration of the DLP-type optical engine includes a lamp unit that emits light and a light input from the lamp unit based on an image signal input from the outside into a suitable image signal. An optical engine support for converting the optical engine unit and the lamp unit and the optical engine unit.

In the DLP optical engine as described above, the screen position is determined by the mechanical fixing of the optical engine. In the mechanical fixing, the optical engine fixed state is slightly distorted due to dimensional deviation between components.

In order to solve such a problem, a tilt adjustment structure is conventionally applied so that the height of the optical engine as shown in FIG. 1 can be corrected within a predetermined range.

1 is a schematic view showing a tilt adjustment structure of a conventional DLP optical engine, FIG. 2 is a plan view showing an assembly structure of a conventional base supporter and an optical engine supporter, and FIG. 3 shows a tilt adjustment structure of a conventional DLP optical engine. As a front view, FIG. 3A shows the state before adjustment, and FIG. 3B shows the state after adjustment.

The tilt adjustment structure of the conventional DLP optical engine as shown in the figure is an optical engine supporter 20 for fixing the optical engine 10, and the base supporter 30 for fixing the optical engine supporter 20 And an adjustment knob 40 for adjusting the gap between the base supporter 30 and the optical engine supporter 20, and a fixture 50 for fixing the gap adjusted by the adjustment knob 40. do.

The optical engine supporter 20 is composed of a plate-shaped body made of a thick metal to prevent deformation and maintain flatness, and forms a boss 24 for fixing the optical engine 10 on the plate-shaped body. The forming guide hole 23 is formed at the center of the rear of the forming position of the boss 24, and the fastening member fixing hole 22 is formed at the right and left positions of the forming guide hole 23, and the boss 24 is formed. Fixing fixing holes 21 for adjusting the tilt are formed on the front left and right of the forming position.

In addition, in the base supporter 30 for fixing the optical engine supporter 20, a matching guide pin 31 is formed at the center of the rear side, and fastening members S are fastened to the left and right sides of the matching guide pin 31. Pam nut 33 is formed, the front left and right positions of the adjustment knob 40 for adjusting the distance between the base supporter 30 and the optical engine supporter 20, and the adjustment knob in close proximity It consists of the structure which forms the fixture 50 installation part for fixing the space | interval adjusted by 40. As shown to FIG.

Referring to the tilt adjustment action of the conventional DLP optical engine having the above configuration as follows.

First, the mounting position of the optical engine supporter 20 is formed by coupling the coupling guide hole 23 formed at the rear center of the optical engine supporter 20 to the guide pin 31 formed at the rear center of the base supporter 30. To be selected.

Then, through the fastening member fixing holes 22 formed on the left and right sides of the matching guide hole 23 of the optical engine supporter 20, the fastening member S of the lower base supporter 30 is the fem nut 33 of the lower base supporter 30. And the rear surface of the base supporter 30 and the optical engine supporter 20 are fixed to each other.

Then, the adjustment knob 40 for adjusting the distance between the base supporter 30 and the optical engine supporter 20 is installed at the front left and right positions of the optical engine supporter 20, and the adjustment knob is located close to this. A fixture 50 for fixing the gap adjusted by 40 is provided.

Then, as shown in FIG. 3, the adjustment knob 40 and the fixture 50 are used to make the tilt adjustment of the DLP optical engine.

However, in the tilt adjustment structure of the conventional DLP optical engine having the above-described configuration, since the position of the adjustment knob 40 for height adjustment and the fixture 50 for fixing the adjusted state of the engine is in a certain range, Since the fixing is performed in a state where a space is generated below the fixture 50, the optical engine supporter 20 in which the optical engine 10 is finely fixed by the fixed torque may be locally deformed and tilted. , The adjustment workability of the optical engine is inferior, and the fixer 50 can be continuously rotated during the adjustment work, which causes a problem that it is impossible to check the state of complete fastening.

The present invention has been proposed to solve the above problems, an object of the present invention to provide a tilt adjustment structure of the DLP optical engine to structurally solve the fine distortion that may occur during the fixing operation after the tilt adjustment of the optical engine The purpose is.

In addition, another object of the present invention is to provide a tilt adjustment structure of the DLP optical engine to eliminate the space between the lower portion of the fixture and the optical engine supporter and the base supporter by adding a variable spacer whose position is variable between the fixture and the optical engine supporter. There is another purpose.

1 is a schematic view showing a tilt adjustment structure of a conventional DLP optical engine.

2 is a plan view illustrating an assembly structure of a conventional base supporter and an optical engine supporter.

3 is a front view showing a tilt adjustment structure of a conventional DLP optical engine.

4 is a plan view showing a mounting structure of the DLP optical engine according to the present invention.

5 is a perspective view showing a structure of a spacer unit according to the present invention.

6 is an exploded perspective view showing the mounting structure of the spacer unit according to the present invention.

7 is a cross-sectional view showing a tilt adjustment structure using a spacer unit according to the present invention.

* Description of the symbols for the main parts of the drawings *

10,110: optical engine 20,120: optical engine supporter

21,121: Fixer fixing hole 22,122: Fastening member fixing hole

23,123: Molding guide hole 30,130: Base supporter

31,131: guide pin 40: adjustment knob

50: fixture 124: boss

150: spacer unit 151: adjusting knob

153: fixture 155: spacer housing

157: variable spacer 159: case

S: fastening member

Tilt adjustment structure of the DLP optical engine according to the present invention for achieving the above object is an optical engine supporter is fixed to the optical engine on the top; And a spacer unit including a base supporter for fixing the optical engine supporter, and a variable spacer for adjusting and fixing heights of the base supporter and the optical engine supporter.

Tilt adjustment structure of the DLP optical engine according to the present invention for achieving the above another object is an optical engine supporter is fixed to the optical engine on the top, a base supporter for fixing the optical engine supporter, the base supporter and the optical In the tilt adjustment structure of the DLP optical engine comprising a spacer unit for adjusting and fixing the height of the engine supporter,

The spacer unit includes an adjustment knob adapted to adjust a distance between the base supporter and the optical engine supporter; A fixture coupled to the adjustment knob to fix the adjustment interval; A case for supporting the rotating shaft of the adjusting knob; A variable spacer adapted to mate with a guide protrusion formed around the case; A spacer housing forming an inner space such that the variable spacer is slid up and down according to the rotation of the adjustment knob to which the variable spacer is screwed; Characterized in that it comprises a separate fastening member to be coupled to the base supporter bottom surface through the through-hole formed in the circumference of the spacer housing and the case.

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

4 is a plan view showing a mounting structure of the DLP optical engine according to the present invention, Figure 5 is a perspective view showing a structure of the spacer unit according to the present invention.

6 to 7 are enlarged views of part A of FIG. 4, and FIG. 6 is an exploded perspective view showing a mounting structure of the spacer unit according to the present invention, and FIG. 7 is a tilt adjustment structure using the spacer unit according to the present invention. It is a cross-sectional view showing a.

As shown in the drawing, the tilt adjustment structure of the DLP optical engine according to the present invention includes an optical engine supporter 120 having an optical engine fixed thereon, and a base supporter 130 for fixing the optical engine supporter 120. ) And a spacer unit 150 having a variable spacer 157 for adjusting and fixing the height of the base supporter 130 and the optical engine supporter 120.

Referring to the components of the present invention having the above configuration in more detail as follows.

First, the optical engine supporter 120 will be described. The optical engine supporter 120 is formed of a plate metal member of a thick metal material to prevent deformation and maintain flatness, and the optical engine on the plate member. A boss 124 for fixing 110 is formed, and a fitting guide hole 123 is formed at a rear center of the forming position of the boss 124, and a fastening member is fixed at left and right positions of the matching guide hole 123. The hole 122 is formed, and the fixture fixing hole 121 for adjusting the tilt is formed on the left and right sides of the front of the formation position of the boss 124.

In addition, the base supporter 130 for fixing the optical engine supporter 120 will be described. In the base supporter 130, a matching guide pin 131 is formed at the center of the rear surface, and the matching guide pin 131 is formed. Pam nuts 133 are formed on the left and right sides of the fastening member S, and mounting holes 135 are formed at the front left and right positions to attach the spacer unit 150. The tab hole 135a for fastening the fastening member S is formed around the circumference of the 135.

5 to 6, the spacer unit 150 includes an adjustment knob configured to adjust a distance between the base supporter 130 and the optical engine supporter 120. 151; A fixture 153 screwed to the adjustment knob 151 to fix the adjustment interval; A case 159 for supporting the rotation shaft 151c of the adjustment knob 151;

A variable spacer (157) adapted to mate with guide pins (159a) formed around the case (159); A spacer housing 155 for forming an inner space such that the variable spacer 157 is slid up and down according to the rotation of the adjustment knob 151 to which the variable spacer 157 is screwed;

It consists of a configuration including a separate fastening member (S) to be coupled to the bottom surface of the base supporter 130 through the through-holes (155c, 159b) formed in the circumference of the spacer housing 155 and the case 159.

The adjusting knob 151 includes a knurled portion 151a serving as a handle, a screw portion 151b formed to be formed at least a predetermined length below the knurled portion 151a, and a rotating shaft 151c formed at the end of the screw portion 151b. It is composed.

The fixture 153 forms a rectangular columnar shape and has a configuration in which a tab hole 153a is formed on the central axis to mate with the threaded portion 151b of the adjustment knob 151.

In addition, the case 159 has a shaft fixing part 159b for inserting and fixing the rotation shaft 151c of the adjustment knob 151 at the center thereof, and three guide protrusions 159a are formed at the circumference thereof to form a variable spacer ( After 157 is assembled, it is configured not to rotate but to move only in the up and down direction.

In addition, the variable spacer 157 is a molded part with the case 159. The flange portion also has three through holes 157b formed in the variable spacer 157, and the threaded portion 151b of the adjustment knob 151 is formed on the inner side thereof. Tab holes 157a are formed to be coupled to each other.

In addition, the spacer housing 155 forms a hollow portion 155a such that the variable spacer 157 can be slid up and down by screwing with the adjustment knob 151 therein, and is variable on the upper portion of the hollow portion 155a. A slide hole 155b is formed to allow the protrusion of the spacer 157 to slide, and a plurality of fastening member through holes 155c are formed on the circumferential flange.

Referring to the tilt adjustment action of the DLP optical engine according to the present invention having the above configuration as follows.

First, the optical engine 110 is fixed on the optical engine supporter 120.

Then, the fitting guide hole 123 formed at the center of the rear of the optical engine supporter 120 is coupled to the guide pin 131 formed at the center of the rear of the base supporter 130 to mount the optical engine supporter 120. Allow location to be selected.

Then, through the fastening member fixing holes 122 formed on the left and right sides of the matching guide hole 123 of the optical engine supporter 120, the separate fastening member S is the fem nut 133 of the lower base supporter 130. And the rear surface of the base supporter 130 and the optical engine supporter 120 are fixedly coupled to each other.

Then, the base supporter is formed by passing a separate fastening member through the through holes 155c and 159b formed in the circumference by sequentially combining the case 159, the variable spacer 157, and the spacer housing 155 of the spacer unit 150. It is to be fastened to the tab hole (135a) formed around the mounting hole (135) of (130).

Then, the base supporter 130 is fixed to a cabinet (not shown).

Then, the adjustment knob 151 coupled to the hexagonal fixture 153 is coupled to the fixture fixing hole 121 formed on the optical engine supporter 120.

The adjusting knob 151 penetrates through the optical engine supporter 120, penetrates the variable spacer 157, and then the rotation shaft 151c is coupled to the shaft fixing part 159c of the case 159.

When the adjustment knob 151 is continuously rotated in the coupling state as described above, the adjustment knob 151 rotates on the shaft fixing part 159c of the case 159.

However, the variable spacer 157 axially coupled to the screw portion 151b of the adjustment knob 151 is moved upward. In this case, the variable spacer 157 serves to push up the optical engine supporter 120 placed on the upper surface.

That is, the front part of the optical engine 110 is heard at a predetermined angle by the action of the variable spacer 157 as described above, and the screen position is changed.

In addition, when the adjustment knob 151 is rotated in the opposite direction, the variable spacer 157 is lowered in the opposite direction, and the front surface of the optical engine sags at an angle.

When the screen position is placed in the desired state through the adjustment operation as described above, the fixed state is rotated by rotating the fixer 153 coupled to the adjustment knob 151 downward so as to be in close contact with the upper surface of the optical engine supporter 120. It can be fixed.

The present invention improves the adjustment workability by integrating the DLP optical engine tilt adjustment structure, and structurally solves the engine distortion caused by the deviation of the fastening torque of the fixer when the optical engine supporter is fixed after the adjustment work. Will have the effect of improving.

Claims (8)

An optical engine supporter on which an optical engine is fixed; A base supporter for fixing the optical engine supporter; And a spacer unit having a variable spacer for adjusting and fixing the height of the base supporter and the optical engine supporter. The method of claim 1, The base supporter has a mold guide pin formed at the center of the rear surface, a pam nut for fastening the fastening member is formed at left and right sides of the mold guide pin, and an attachment hole for attaching a spacer unit is formed at the front left and right positions. And a tab hole for fastening the fastening member to the periphery of the attachment hole. Tilt adjustment of a DLP optical engine comprising an optical engine supporter having an optical engine fixed thereon, a base supporter for fixing the optical engine supporter, and a spacer unit for adjusting and fixing the height of the base supporter and the optical engine supporter. In structure, The spacer unit, An adjusting knob configured to adjust a distance between the base supporter and the optical engine supporter; A fixture coupled to the adjustment knob to fix the adjustment interval; A case for supporting the rotating shaft of the adjusting knob; A variable spacer adapted to mate with guide pins formed around the case; A spacer housing forming an inner space such that the variable spacer is slid up and down according to the rotation of the adjustment knob to which the variable spacer is screwed; And a separate fastening member configured to couple to the bottom of the base supporter through a through hole formed in a circumference of the spacer housing and the case. The method of claim 3, wherein The adjustment knob is a tilt adjustment structure of the DLP optical engine, characterized in that the knob portion, the screw portion to be formed over a predetermined length below the null portion, and the rotating shaft formed on the end of the screw portion. The method of claim 3, wherein The fixture has a rectangular columnar shape, the tilt adjustment structure of the DLP optical engine, characterized in that to form a tap hole for mating with the screw portion of the adjustment knob in the central axis. The method of claim 3, wherein The case has a shaft fixing portion for inserting and fixing the rotating shaft of the adjustment knob in the center, a plurality of guide protrusions are formed in the circumference, after the variable spacer is assembled, it is configured to be able to move only in the vertical direction without rotation Tilt adjustment structure of DLP optical engine. The method of claim 3, wherein The variable spacer is a tilt adjustment structure of the DLP optical engine, characterized in that three through holes are formed in the flange portion, the tab hole is formed to be coupled to the screw portion of the adjustment knob inside. The method of claim 3, wherein The spacer housing has a hollow portion formed therein so that the variable spacer can be slid up and down by screwing with the adjusting knob, and forms a slide hole at the top of the hollow portion to allow the protrusion of the variable spacer to slide, and a circumferential flange A tilt adjustment structure of a DLP optical engine, characterized in that a plurality of fastening member through-holes are formed thereon.