KR101171307B1 - A 3D-projection optical engine using LCOS image panel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection stereo-optic optical engine, and in particular, a plurality of reflective silicon liquid crystal panels (LCOS) and a polarizing beam splitter (PBS: polarizing beam splitter) to light both polarized light. The present invention relates to a three-dimensional projection optical engine for acquiring a three-dimensional image while improving light quantity by using a light source, wherein the light source is formed of a lamp or a white light emitting diode or a red, green, and blue light emitting diode. And a second polarization beam splitter, and a plurality of color filters are disposed around the polarization beam splitter to separate red light, green light, and blue light into monochromatic light to transmit or reflect incident illumination light, thereby increasing color purity. A plurality of silicon liquid crystal panels are arranged around the polarization beam separator or the color filter to capture the left and right images transmitted or reflected. It accommodates both, and changes the polarization direction to reflect, so as not to discard the left and right polarization to use both, it is characterized in that to ensure a double light amount.

Description

A 3D-projection optical engine using LCOS image panel}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection stereo-optic optical engine, and in particular, a plurality of reflective silicon liquid crystal panels (LCOS) and a polarizing beam splitter (PBS: polarizing beam splitter) to light both polarized light. It relates to a three-dimensional projection optical engine to obtain a three-dimensional image while improving the amount of light using.

In general, a projection projection engine is employed in a projection TV or a projector to form light of an image that is ultimately projected to a viewer, and such projection optical engine receives information about an image to be formed, and then displays an internal screen such as a projection TV. It forms an image to be projected to an external screen such as a projector, and is largely formed of an illumination optical system and a projection optical system including a configuration for color separation and color synthesis.

The Spatial Light Modulator (Spatial Light Modulator) device used in such an optical engine is a kind of a transparent liquid crystal display (LCD) panel, a digital micromirror device (DMD) device, and a silicon of a reflective liquid crystal device. Liquid crystal panel (LCOS: Liquid Crystal on Silicon).

Among the optical modulation elements, the silicon liquid crystal panel (LCOS) is characterized in that the driving is simpler and cheaper than the liquid crystal display (LCD) and the digital micromirror device (DMD).

As shown in FIG. 1, a structure of an optical engine 100 using a conventional silicon liquid crystal panel (LCOS) device includes a light source 110 including a lamp for generating light; A glass rod (120) formed at the front side of the light source (110) to uniformly form a plurality of total reflections; An illumination lens 130 formed at the front side of the glass rod 120 to illuminate the uniform light that proceeds; A polarizing beam splitter formed by one side of the illumination lens 130 to reflect or transmit polarization components of incident illumination light to be separated into polarized light of green light (G), red light (R), and blue light (B). 140, ie, first, second, third and fourth polarization beam splitters 141, 142, 143, and 144; Red light (R) formed around the polarization beam separator 140 and formed as a side portion of the color filter 150, ie, the first polarization beam separator 141, to increase the purity of red light, green light, and blue light, Between the first color filter 151 for increasing the purity of the green light G, between the other side of the first polarization beam separator 141 and one side of the fourth polarization beam separator 144, and the third polarization beam A second color filter 152 and a third color filter 153 formed between one side of the separator 143 and the other side of the fourth polarization beam separator 144 to increase the purity of the transmitted red and blue light; The red light silicon liquid crystal panel 161 is formed as a side portion of the second polarization beam separator 142 and the fourth polarization beam separator 144 and forms red, green, and blue light separated by reflection or transmission as an image signal. ), A silicon composed of a green light silicon liquid crystal panel 162 and a blue light silicon liquid crystal panel 163. The liquid crystal panel 160, and; A projection lens 170 for projecting an image signal traveling through the third polarization beam splitter 143 onto the screen 180; It is made, including.

However, such an optical engine is an optical system for realizing a two-dimensional image, and when the first illumination light is incident, green light of one polarization is reflected in the first polarization beam splitter, red light and blue light of the other polarization are transmitted, and the green light is second. After the reflection in the polarization beam splitter, the green light-silicon liquid crystal panel has image information and the polarization direction is changed after reflection, and is transmitted to the screen through the projection lens through the second polarization beam separator and the third polarization beam separator.

In addition, the red and blue light transmitted by the first polarization beam splitter are separated by the fourth polarization beam splitter, and the polarization direction is changed after reflection in the red light silicon liquid crystal panel and the blue light silicon liquid crystal panel, and then passes through the fourth polarization beam separator. After the reflection in the third polarization beam splitter, it proceeds to the projection lens and the screen.

This configuration uses a polarizing beam splitter because the silicon liquid crystal panel uses polarized light and is applied to project two-dimensional images.

In addition, such an optical engine is a structure that discards one side of the polarization, so the amount of light can only be utilized by 50%, resulting in a decrease in light efficiency and a brighter image.

Accordingly, the present invention has been made to solve the above problems, it is an object of the present invention to provide a three-dimensional projection optical engine to achieve the power savings and the amount of light to secure the amount of light twice as bright.

The present invention for achieving the above object is a light source, a glass rod for uniformly forming the light generated from the light source in a plurality of total reflection, an illumination lens for illuminating the uniform light passed through the glass rod, A color filter that separates light according to color, and a polarized beam splitter that transmits or reflects the transmitted or reflected color light to the polarization component and reflects and separates the S polarization, and separates the red, green, and blue light into the image signal. And a projection lens for projecting an image signal formed on the silicon liquid crystal panel to a screen, wherein the light source can implement a white light lamp or white light. And a polarizing beam splitter, wherein the two polarizing beam splitters are disposed as a first polarizing beam splitter and a second polarizing beam splitter. The first color filter and the second color filter 2 which transmit or reflect incident illumination light to one surface or a plurality of surfaces of the first polarization beam splitter and the second polarization beam splitter to separate red light, green light, and blue light into monochromatic light to increase color purity. Color filter consisting of three color filters or a second color filter, a third color filter, a fourth color filter, or a color filter consisting of four first color filters, a second color filter, a third color filter, and a fourth color filter And a plurality of silicon liquid crystal panels, or two in total, are disposed on a plurality of surfaces of the first polarization beam separator and the second polarization beam separator or the third color filter and the fourth color filter. Or it is characterized in that to accommodate both the left and right image to reflect, and to change the polarization direction to reflect and to use both without discarding the left and right polarization to ensure twice the amount of light.
A color wheel for selectively transmitting incident light is formed between the second polarization beam splitter and the first color filter or between the light source and the glass rod.
When the light source is formed of a light emitting diode, a second color filter, a third color filter, and a fourth color filter are disposed on three surfaces of the second polarization beam separator, and the plurality of first polarization beam separators may be disposed. Two green light silicon liquid crystal panels are formed on the surface, and a plurality of surfaces of the third color filter and the fourth color filter are formed on the red light silicon liquid crystal panel and the blue light silicon liquid crystal panel, respectively. .
When the light source is formed of a white light lamp, the first color filter, the second color filter, the third color filter, and the fourth color filter are disposed on four surfaces of the second polarization beam splitter, respectively, and the first polarization A dummy prism block for transmitting light incident through the first color filter is formed at one side of the beam splitter, and a plurality of mirrors for changing a path of light propagating to one side of the dummy prism block and the first polarization beam splitter. An auxiliary light lens is formed between the mirror and the mirror, and a plurality of surfaces of the first polarization beam splitter are formed of a green light silicon liquid crystal panel, respectively, and a plurality of surfaces of the third color filter and the fourth color filter are red light. It is characterized in that the silicon liquid crystal panel and the blue silicon liquid crystal panel is disposed.
The color wheel is formed of a half blue filter and the other half is formed of a red filter based on the center, or half of the green and blue transmits, and the other half of the filter is coated with green and red through the center It is characterized by consisting of any one of.
A lens for condensing the chief rays of light is formed between one side of the silicon liquid crystal panel or the polarization beam separator and the color filter.
The color filter may be formed to reflect green light and transmit red and blue light, or to reflect red and blue light and transmit green light.
The present invention also provides a light source, a glass rod for uniformly forming the light generated by the light source in a plurality of total reflections, an illumination lens for illuminating uniform light passing through the glass rod, and the illumination light is separated according to color. And a polarization beam splitter that transmits the reflected or reflected color light to the polarization component and reflects and isolates the S polarization, and separates red, green, and blue light into an image signal, In a three-dimensional projection optical engine comprising a silicon liquid crystal panel for changing the direction and a projection lens for projecting the image signal formed in the silicon liquid crystal panel on the screen, the light source is formed of a light emitting diode (LED) capable of realizing white light The polarizing beam separator and the color filter may be disposed in one or two, and the plurality of surfaces of the polarizing beam separator may be used to form the green silicon liquid crystal. The panel and the red and blue silicon liquid crystal panel are disposed separately to accommodate both the left and right images transmitted or reflected, and to change the polarization direction to reflect them so that they can be used without throwing away the left and right polarizations, thereby ensuring double the amount of light. It is characterized by.
The light emitting diodes (LED) may be disposed such that red light, green light, and blue light are simultaneously irradiated in one direction, or green light is disposed so that red light and blue light cross each other at right angles in one direction.
When the light emitting diodes (LEDs) are arranged such that red light, green light, and blue light are simultaneously irradiated in one direction, the polarizing beam splitter and the color filter are disposed to face each other, and the green light emitting diodes are red light and blue light in one direction. When the light emitting diodes are arranged to be irradiated to cross at right angles to each other in the tile direction, the polarizing beam separators are arranged in two, and the color filters are arranged in one, or the polarizing beam separators and the color filters are arranged in one each. It is characterized by.
The polarizing beam splitter is characterized in that formed in a cube or grid pattern flat.
The present invention also provides a light source, a glass rod for uniformly forming the light generated by the light source in a plurality of total reflections, an illumination lens for illuminating uniform light passing through the glass rod, and the illumination light separated according to color And a polarization beam splitter that transmits the reflected or reflected color light to the polarization component and reflects and isolates the S polarization, and separates red, green, and blue light into an image signal, In a three-dimensional projection optical engine comprising a silicon liquid crystal panel for changing the direction and a projection lens for projecting the image signal formed in the silicon liquid crystal panel on the screen, the polarizing beam separator is a first polarizing beam splitter, a second polarizing beam A first polarizer and a third polarizer beam splitter, wherein the first and second color filters are disposed in one direction before the light passes to the third polarized beam splitter based on the path of the light. Is simultaneously arranged on one side of the third polarization beam splitter, and a third color filter is formed between the first, second and third polarization beam splitters to select or reflect or transmit illumination of incident red, green, and blue light. A mirror for changing a path of light that is reflected and proceeds is formed on one side of the first polarizing beam splitter in a diagonal direction, and a plurality of green silicon liquid crystal panels are formed on a plurality of surfaces of the first polarizing beam splitter, respectively. The blue light silicon liquid crystal panel is formed on the plurality of surfaces of the two polarization beam separators, and the red light silicon liquid crystal panel is formed on the plurality of surfaces of the third polarization beam separators to accommodate both the left and right images transmitted or reflected. In addition, the polarization direction is changed to reflect the light, thereby allowing both to be used without discarding the left and right polarizations.
The third color filter may be formed of an X-cube that transmits green light and reflects red and blue light.
The light source may be formed of any one of a light emitting diode capable of implementing a white light lamp or white light.
The light source formed of the light emitting diodes is disposed to allow green light to enter the first polarization beam splitter, to allow blue light to enter the second polarization beam splitter, and to arrange red light to enter the third polarization beam splitter. It is characterized by.

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As described above, the present invention, in particular, has one or more polarizing beam splitters, color filters, and silicon liquid crystal panels, which have a characteristic effect of ensuring a double amount of light by using both polarizations.

1 is a view showing the configuration of a two-dimensional image projection optical engine using a conventional silicon liquid crystal panel (LCOS).
2 is a view schematically showing the configuration of a stereo projection optical engine according to the present invention.
3 is a view illustrating a state in which the color wheel shown in FIG. 2 is formed at another position.
4 is a view illustrating a state in which a lens for condensing illumination light is formed in front of each silicon liquid crystal panel of FIG. 3.
5 is a view illustrating a state in which a lens for condensing illumination light is formed between the polarization beam splitter and the color filter of FIG. 3.
6 is a view showing a state in which a light path is deformed by forming a light source as a light emitting diode (LED) as a second embodiment of a stereoscopic projection optical engine according to the present invention.
7 is a view showing a state in which a light path is deformed by forming a light source as a white light lamp as a third embodiment of a stereoscopic projection optical engine according to the present invention.
8 is a view showing a state in which a red light, green light, and blue light are emitted from one direction while forming a light source as a light emitting diode (LED) as a fourth embodiment of the stereoscopic projection optical engine according to the present invention.
9 is a fifth embodiment of a stereoscopic projection optical engine according to the present invention, in which a light source is formed of a light emitting diode (LED) and at the same time red light is emitted from one side, and green light and blue light are emitted from the other side. The figure shown.
FIG. 10 is a view illustrating a state in which a light source is formed of a light emitting diode (LED) and only one polarizing beam separator and one color filter are formed at the same time as a sixth embodiment of a stereoscopic projection optical engine according to the present invention.
11 is a view illustrating a state in which three polarization beam splitters are formed as a seventh embodiment of a stereoscopic projection optical engine according to the present invention.
FIG. 12 is a view illustrating a state in which the light source of FIG. 11 is formed of a light emitting diode as an eighth embodiment of a stereoscopic projection optical engine according to the present invention.

Hereinafter, preferred embodiments of the stereoscopic projection optical engine according to the present invention will be described in more detail with reference to the accompanying drawings.

Here, in all the drawings below, the components having the same functions are not repeated, using the same reference numerals, and the following terms are defined in consideration of functions in the present invention, which are inherently commonly used. It should be interpreted as meaning.

2 to 5, the present invention includes a light source 310, a color wheel 390, a color filter 350, a polarizing beam splitter (PBS) 340, and a silicon liquid crystal panel. (Liquid Crystal On Silicon) (360) is roughly made.

The light source 310 is formed of a lamp that generates white light, which is light in which light of each wavelength is combined in an appropriate ratio, such as sun light, or incandescent light by red light (R), green light (G), and blue light (B). Unlike conventional lighting such as fluorescent lamps, light emitting diodes (LEDs) are formed to realize high-efficiency white light that converts electrical energy into light energy.

The color wheel 390 is a luminaire, and includes a disc including a color filter for selectively passing red light R and blue light B among white light incident thereto, or half red light R, A color filter (gelatin paper) of green light (G) is disposed, and the other half is a disc on which color filter (gelatin paper) for passing green light (G) and blue light (B) is disposed, and a driving source for rotating the disc. (Not shown).

That is, the color wheel 390 is formed of a red filter so that half of the red light (R) is transmitted relative to the center of the disc, and the other half is formed of a blue filter so that the blue light (B) is transmitted, or the center of the disc Half of the green and blue filters are coated to transmit green light (G) and blue light (B), and the other half is coated with green and red filters to transmit green light (G) and red light (R). Or the like.

Here, a green filter and a blue filter are coated so that the color wheel 390 transmits green light (G) and blue light (B) half of the color wheel 390, and the other half of the green light (G) and red light (R). When the green filter and the red filter are coated to transmit, coating characteristics as shown in Table 1 and Table 2 are achieved.

Table 1 shows a coating graph of a filter coated color wheel or X-cube prism that transmits red light (R) and green light (G) and reflects blue light (B).

Table 2 shows a coating graph of a filter coated color wheel or X-cube prism that transmits green light (G) and blue light (B), and reflects red light (R).

In addition, the color wheel 390 is formed between the polarization beam splitter 340 and the color filter 350, or as shown in Figure 3 in the middle of the illumination system, that is, from the light source 310 and the light source 310 It is preferable that the light is formed between the glass rods 320 uniformly forming a plurality of total reflections.

Here, as shown in FIG. 2, when the color wheel 390 is formed between the polarization beam separator 340 and the color filter 350, the red filter transmits half the red light R based on the center of the original plate. And the other half is formed of a blue filter to transmit blue light (B), and as shown in FIG. 3, the middle of the illumination system, that is, between the light source 310 and the glass rod 320. When formed in the green filter and the blue filter is coated so that half of the green light (G) and blue light (B) is transmitted to the center of the disc, and the other half is the green filter to transmit the green light (G) and red light (R) It is preferable to use a coated with a red filter.

That is, when the color wheel 390 is formed in the middle of the illumination system, half of the rotating disc transmits green light (G) and red light (R), and the other half is coated with a filter transmitting blue light (B) and green light (G). Should be used. In other words, the green light G should always be configured to transmit.

The color filter 350 is a filter that partially absorbs and transmits light by adding color to the glass or by coating a film in several layers. The color filter 350 is disposed around the illumination lens 330 and the polarization beam separator 340. The first color in the form of a cube having a diagonal surface for dividing the light proceeding without being polarized and proceeding without polarization into red light (R), green light (G), and blue light (B) to increase color purity and simultaneously reflect or transmit light. The filter 351 and the second color filter 352 are preferably formed.

Here, the first color filter 351 is formed to reflect green light (G) and transmit red light (R) and blue light (B), and the second color filter 352 transmits green light (G) and transmits red light. (R) and blue light (B) may be formed to reflect, or the second color filter 351 may be formed to reflect green light (G) and transmit red light (R) and blue light (B).

Alternatively, in the opposite case, the first color filter 351 is formed to transmit green light G, and to reflect red light R and blue light B, and the second color filter 352 is formed of green light G. It may be formed to transmit the red light (R) and blue light (B), or to reflect the green light (G) in the second color filter 352, and to transmit the red light (R) and blue light (B). have.

The polarizing beam splitter (PBS) 340 may be formed around the first color filter 351 and the second color filter 352, for example, in a diagonal direction. P-polarized wave and S receive illumination light separated by transmission or reflection by red light R, blue light B, and green light G by the first color filter 351 between the second color filter 352 and the second color filter 352. Two are arranged as a first polarization beam separator 341 and a second polarization beam separator 342 which are easily separated by polarized waves.

Here, the P-polarized wave is light of a component in which the electric field of the light has a direction parallel to the incident plane (the plane including the direction of the incident wave and the normal line of the interface), and the S polarized wave is light of the direction in which the electric field is perpendicular to the plane of incidence Indicates. At this time, the P-polarized wave is transmitted and the S-polarized wave is reflected at right angles.

In addition, the polarization beam splitter 340 is preferably formed in a triangular prism is combined to form a cube, or a grid pattern flat.

The silicon liquid crystal panel (LCOS) 360 is a reflective liquid crystal device as one of a spatial light modulator device, and is formed on a plurality of surfaces that form the sides of the first polarization beam separator 341, respectively. Red and blue light-emitting silicon liquid crystals are formed on the plurality of green light-silicon liquid crystal panel 362 and the plurality of surfaces forming the sides of the second polarization beam splitter 342, respectively, and are responsible for time-divisionally sharing left and right images. Panel 364.

Here, the plurality of green silicon liquid crystal panel 362 is formed so that a total of two panels for forming a green light (G) in each one panel is responsible for the left and right green image, the silicon liquid crystal panel for red, blue light The 364 is formed such that the two panels forming the red light R and the blue light B in half in one panel are time-divisionally responsible for the left and right red light R and blue light B images.

Accordingly, although the red light (R) and the blue light (B) are only half of the green light (G), the three pieces of red light (R), green light (G), and blue light (B) are combined to realize the white light. This double is needed so that a suitable arrangement can be achieved.

In addition, the plurality of green light silicon liquid crystal panel 362 and the red and blue light silicon liquid crystal panel 364 may include the green light G and the first polarization beam separator 341 and the second polarization beam separator 342. The polarized light separated by the red light R and the blue light B is rotated to form an image, that is, a video signal, and then returned to the incident direction.

The silicon liquid crystal panel 360 is characterized in that the drive of the optical modulation device is simpler and inexpensive than the transmissive LCD panel or the DMD device.

The silicon liquid crystal panel 360 is preferably formed at the side of the polarization beam separator 340 or the side of the cube-shaped color filter 350.

In addition, the present invention is to reduce the size of the projection lens, to facilitate the design and at the same time to facilitate the fabrication of the polarizing beam separator, as shown in Figure 4 and 5 or one side of the silicon liquid crystal panel 360 A lens L for condensing chief rays of light between the polarization beam separator 340 and the color filter 350 is formed. As a result, the chief rays of light do not diffuse and proceed in the optical axis direction.

That is, when the lens L for condensing is positioned in front of the silicon liquid crystal panel 360 or between the polarization beam separator 340 and the color filter 350, the polarization beam separator 340 and the color filter 350 are positioned. Since the chief ray passing through the beam proceeds in parallel with the optical axis, the angle incident on the polarization separation surface of the polarization separator 340 does not deviate significantly from 45 °, and the size of the projection lens can be reduced, thereby designing and manufacturing the optical engine. This is easy.

The installation of the lens L for condensing is equally applicable to a stereoscopic optical engine using a white light lamp as a light source, as well as a stereoscopic optical engine using a light emitting diode capable of realizing white light as a light source.

In addition, since the three-dimensional projection optical engine having such a configuration uses both polarizations as compared to the two-dimensional projection optical engine that conventionally discards one polarization, it is possible to secure brighter image quality by ensuring twice the light quantity.

The operation state of the present invention having the above-described structure will now be described.

First, the three-dimensional projection optical engine 300 according to the present invention is incident to the glass rod 320 formed of a rectangular glass rod cross-section in front of the illumination light (light) generated by the light source 310 is a plurality of It becomes total light and changes to uniform light.

The uniform light passing through the glass rod 320 is incident to the illumination lens 330 formed of a plurality of lenses, refracted, and then diffused.

The light illuminated by the illumination lens 330 is incident on the first color filter 351 while reflecting green light (G) and transmitting red light (R) and blue light (B), and green, red, and blue light are colored. To be separated.

The green light G reflected by the first color filter 351 is incident to the first polarization beam splitter 341, and the transmitted red light R and blue light B pass through the color wheel 390 and then receive red light ( R) and blue light (B) are selectively passed time-divisionally and incident on the second polarization beam splitter 342.

Subsequently, the green light G, which has traveled to the first polarization beam splitter 341, is reflected or transmitted and is incident on the plurality of green light silicon liquid crystal panel 362, and the red light that has traveled to the second polarization beam separator 342. (R) and blue light (B) are reflected or transmitted, and are incident on the plurality of red and blue silicon liquid crystal panels 364.

The two different polarizations proceeded as described above are rotated by different polarization directions in the pixels of the green silicon liquid crystal panel 361 and the red and blue silicon liquid crystal panel 362 to form an image signal. The degree of rotation at this time becomes image information.

That is, in the case of each silicon liquid crystal panel of the present invention, the light intensity of the red light R, the green light G, and the blue light B becomes image information.

The rotated polarized light is reflected back along the optical path and passed through the second color filter 352 through reflection or transmission, and then is projected onto the screen 380 through the projection lens 370 to form a large image. do.

At this time, the progressing light is reflected or transmitted through the silicon liquid crystal panel 360 without being discarded, so that both polarizations are propagated to the polarization beam separator 340, so that the amount of light twice as bright can be obtained. Light quantity is improved.

On the other hand, Figure 6 is a view showing a second embodiment of the present invention, which is a light emitting diode in which the red light (R), green light (G), blue light (B) is combined with the light source 310 instead of a white light lamp to implement a white light By forming with (LED), the structure of the light engine is made compact.

That is, a light emitting diode light source 310 for generating and emitting red light R and blue light B is disposed on one side of the second polarization beam separator 342 instead of the white light lamp, and the light emitting diode light saying 310 is disposed. The second, third, and fourth color filters 352, 353, and 354 each have three ones on the other three directions (three surfaces) of the second polarization beam splitter 342 except for the one side. The light emitting diode light source 310 which generates and emits green light G is disposed on one side of the first polarization beam splitter 341.

In addition, two green light silicon liquid crystal panels 362 are formed on the other side of the first polarization beam separator 341, and the third color filter 353 and the fourth color filter 354 are formed on the other side. As a part, four red silicon liquid crystal panels 361 and two blue light silicon liquid crystal panels 363 are formed. The projection optical engine of such a configuration can be manufactured more simply and compactly.

7 is a view showing a third embodiment according to the present invention, in which the light source 310 is formed of a white light lamp.

Four first, second, third, and fourth color filters 351, 352, 353, and 354 are disposed on all four sides of the second polarization beam splitter 342, respectively. One side of the polarization beam splitter 341 is formed with a dummy prism block 345 for transmitting illumination light incident or reflected through the first color filter 351, the dummy prism block 345 and the first On one side of the polarizing beam splitter 341, a plurality of mirrors M for changing the path of the traveling light are formed.

In addition, an illumination auxiliary lens 346 is formed between the mirror M and the mirror M, and two green light silicon liquid crystals are formed on a plurality of surfaces of the other side of the first polarization beam separator 341. A panel 362 is formed, and the plurality of surfaces that are side portions of the second color filter 352, the third color filter 353, and the red light silicon liquid crystal panel 361 and the blue light silicon liquid crystal panel ( 363) are formed of two of two each.

As such, when the silicon liquid crystal panel 360 is disposed and used, more light and high resolution images can be obtained. In this case, however, it is preferable that a dummy prism block 345 is formed in the green light path to match the optical distance from the projection lens 370 to each of the silicon liquid crystal panels 361, 362, and 363.

In addition, since the green illumination light path is longer than other light paths, an illumination auxiliary lens (lighting relay optical system) 346 is additionally formed in the green light path for efficient illumination.

8 is a fourth embodiment according to the present invention, which is formed of the first polarization beam separator 340 and the second polarization beam separator 342, and the first polarization beam separator ( 341 and the first color filter 351 between the first polarization beam splitter 341 and the second polarization beam splitter 342 facing each other, for example, in a diagonal direction. A second color filter 352 is formed, and a plurality of surfaces of the first polarization beam separator 341 are formed with green silicon liquid crystal panel 362, respectively, and a plurality of second polarization beam separators 342. As surfaces, red and blue silicon liquid crystal panels 364 were formed, respectively.

In addition, the light source 310 is formed of a light emitting diode (LED) capable of realizing white light by combining red light (R), green light (G), and blue light (B) instead of a white light lamp. The color wheel 390 formed between the two polarization beam separators 342 is not formed.

In the present embodiment, the light emitting diodes (LED) are formed such that red light (R), green light (G), and blue light (B) are simultaneously irradiated in one direction.

As a result, the structure can be simplified, and an improved amount of light can be ensured.

9 is a view showing a fifth embodiment of the present invention, in which two polarizing beam splitters 340 are formed, namely, a first polarized beam splitter 341 and a second polarized beam splitter 342. Only one color filter 350 is formed between one side of the first polarization beam separator 341 and the second polarization beam separator 342, and a plurality of surfaces of the first polarization beam separator 341 are used for green light. The silicon liquid crystal panel 362 was formed, respectively, and the silicon liquid crystal panel 364 for red and blue light was formed in the several surface of the 2nd polarization beam separator 342, respectively.

In addition, the light source 310 is formed of a light emitting diode (LED) capable of realizing white light by combining red light (R), green light (G), and blue light (B).

Accordingly, the green light (G) light emitting diode (LED) is disposed so that the green light (G) is incident to the first polarization beam splitter (341), and the red light (R) and the blue light (B) light emitting diode (LED) are the first light. By arranging the red light (R) and the blue light (B) to be incident to the two polarization beam splitter 342, a simple structure that does not form a color filter and a color wheel is achieved.

Here, the light emitting diode (LED) light source 310 is formed so that the green light (G) in one side direction, the red light (R) and the blue light (B) cross and irradiate at right angles to each other in the tile side direction.

FIG. 10 is a view showing a sixth embodiment of the present invention, which forms one polarizing beam separator 340 to form a grid-like flat plate shape, and a plurality of polarizing beam separators 340 are provided at one side of the polarizing beam separator 340. The green light silicon liquid crystal panel 362 was formed, and a plurality of red and blue light silicon liquid crystal panel 364 was formed at the other end side.

In addition, one color filter 350 is formed on one side of the middle portion of the polarization beam separator 340, and the green light emitting diode (LED) is formed to be irradiated from one side direction, and the red light (R). And blue light (B) light emitting diodes (LEDs) are formed so as to cross each other so as to be irradiated in a tile side direction perpendicular to the green light (G) light emitting diodes (LEDs).

This structure is a modified structure of FIG. 9 to form a simpler and more compact structure by forming only one wire grid PBS without using a plurality of polarizing beam splitters.

In all of these embodiments, the left and right images transmitting or reflecting the silicon liquid crystal panel are accommodated and reflected by changing the polarization direction so that both of them can be used without discarding the left and right polarizations, thereby ensuring a double light amount.

In this way, the light source 310 is formed of a light emitting diode (LED) which can realize a white light by combining the red light (R), green light (G), blue light (B), red light (R), green light (G), blue light ( When B) is formed to be irradiated at the same time in one direction, the polarization beam splitter 340 and the color filter 350 are arranged in two opposite to each other, and the green light G is red light R and blue light in one direction. When (B) is formed to cross and irradiate at right angles to each other in the tile-side direction, the polarization beam separator 340 is disposed in two, and the color filter 350 is disposed in one, or the polarization beam separator ( The 340 and the color filter 350 may be arranged in one each.

In addition, the polarization beam splitter 340 may be formed in a cube shape or a grid pattern plate type as necessary.

This is to reduce the number of the polarizing beam separator 340 or to form a grid pattern flat plate, thereby improving the amount of light and weight can be reduced. Therefore, the structure of the stereoscopic optical engine 300 can be simplified and the weight can be reduced, thereby achieving a compact size.

11 is a view showing a seventh embodiment according to the present invention, in which the polarization beam separator 340 includes a first polarization beam separator 341, a second polarization beam separator 342, and a third polarization beam separator ( 343, and light is first and second color filters 351 and 352 disposed on one surface of the third polarization beam splitter 343 at the same time based on the path of the light. A third color that selects, reflects or transmits the illumination of the red light R, the green light G, and the blue light B that are incident between the 1,2,3 polarization beam splitters 341, 342, and 343. A filter 353 is formed, and a mirror M is formed on one side of the first polarization beam splitter 341 to change a path of reflected light and travel, and the first polarization beam splitter 341 and the second The plurality of surfaces, which are the side portions of the polarization beam separator 342 and the third polarization beam separator 343, include a red light silicon liquid crystal panel 361, a green light silicon liquid crystal panel 362, and a blue light silicon liquid crystal. Board 363 is formed of six dogs each two by two.

Accordingly, the first color filter 351 reflects the blue light B to proceed to the mirror M, and transmits the red light R and the green light G to enter the second color filter 352. The blue light B reflected on the mirror M is transmitted or reflected by the second polarization beam separator 342 and the blue liquid crystal panel 363 to the third color filter 353. After the reflection, the light is projected onto the screen 380 through the projection lens 370, and the red light R that passes through the second color filter 352 passes through the third polarization beam separator 343 and the red light silicon. After being transmitted or reflected from the liquid crystal panel 361, the liquid crystal panel 361 proceeds to the third color filter 353, and then is reflected and projected onto the screen 380 through the projection lens 370, and then proceeds to the second color filler 352. The green light G is reflected and transmitted or reflected from the first polarization beam separator 341 and the green light silicon liquid crystal panel 362, so that the third curl After passing through the filter 353, the light is transmitted and projected to the screen 380 through the projection lens 370.

In this configuration, that is, the polarization beam separator 340 for each wavelength of the red light R, the green light G, and the blue light B is formed, and the first, second, and third polarization beam separators 341, 342, X which transmits the red light (R), the green light (G), and the blue light (B) passing through the (343) through the third color filter 353, and transmits the green light (G) and reflects the red light (R) and the blue light (B). As the cube is formed as a cube, the wavelength range of the polarization beam separator 340 is narrow, thus making it easy to manufacture.

Accordingly, the left and right images incident to the silicon liquid crystal panel 360 are accommodated, and the polarization directions are changed to reflect the light, thereby ensuring that the light quantity is twice as bright as the left and right polarizations.

FIG. 12 is a view showing an eighth embodiment according to the present invention, which is a modified configuration of FIG. 11, wherein the light source 310 is combined with red light (R), green light (G), and blue light (B) instead of a white light lamp. By forming a light emitting diode (LED) that can implement white light, the structure of the light engine is compact.

That is, a light emitting diode light source 310 for illuminating green light G is disposed on one side of the first polarization beam splitter 341, and blue light B on one side of the second polarization beam splitter 342. A light emitting diode light source 310 for illuminating is disposed, and a light emitting diode light source 310 for illuminating red light R is disposed on one side of the third polarization beam splitter 343.

Accordingly, the blue light B emitted from the light emitting diode light source 310 illuminating the blue light B is transmitted or reflected by the second polarization beam splitter 342 and the blue light silicon liquid crystal panel 363, and thus the first light is emitted from the light emitting diode light source 310. After proceeding to the three-color filter 353 is reflected and projected to the screen 380 through the projection lens 370, the red light (R) emitted from the light emitting diode light source 310 for illuminating the red light (R) is Transmitted or reflected by the three-polarization beam splitter 343 and the red light-silicon liquid crystal panel 361, the light flows through the third color filter 353, and is then reflected and projected onto the screen 380 through the projection lens 370. The green light G emitted from the light emitting diode light source 310 illuminating the green light G is transmitted or reflected by the first polarization beam separator 341 and the green light-silicon liquid crystal panel 362 so as to transmit the third color filter. After proceeding to 353, the light is transmitted and projected onto the screen 380 through the projection lens 370.

Therefore, in a simpler configuration, the left and right images incident on the silicon liquid crystal panel 360 are accommodated, and the polarization direction is changed to reflect the light so that the amount of light is twice as bright as the left and right polarizations are used.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. And will be apparent to those skilled in the art to which the invention pertains.

310: light source 320: glass rod
330: Illumination lens
340: Polarizing Beam Splitter (PBS)
341: first polarizing beam separator 342: second polarizing beam separator
343: third polarization beam separator 350: color filter
351: first color filter 352: second color filter
353: third color filter 354: fourth color filter
360: Liquid Crystal on Silicon (LCOS)
361: red light silicon liquid crystal panel 362: green light silicon liquid crystal panel
363: Blue light silicon liquid crystal panel 364: Red and blue light silicon liquid crystal panel
370: Projection Lens 380: Screen
390: color wheel M: mirror
L: Lens

Claims (16)

A light source, a glass rod for uniformly forming the light generated from the light source in a plurality of total reflections, an illumination lens for illuminating uniform light passing through the glass rod, a color filter for separating the illuminated light according to color; Polarized beam splitter that transmits the reflected or reflected color light to the polarization component and reflects and separates the S polarization, and silicon that separates the red, green, and blue light into an image signal, and changes the direction of polarization. In a stereo optical engine comprising a liquid crystal panel and a projection lens for projecting the image signal formed in the silicon liquid crystal panel on the screen,
The light source is formed of a white light lamp or a light emitting diode capable of realizing white light, and two polarizing beam splitters are disposed as a first polarizing beam separator and a second polarizing beam separator, and the first polarizing beam separator and the second polarizing beam One or a plurality of surfaces of the separator transmits or reflects incident illumination light to separate red light, green light, and blue light into monochromatic light to increase color purity, and thus, a color filter or a second color filter including two first color filters and a second color filter; A color filter comprising three third color filters and four fourth color filters, or a color filter consisting of four first color filters, a second color filter, a third color filter, and four fourth color filters, is disposed. And four or six silicon liquid crystal panels, each of which is disposed on a plurality of surfaces of the second polarization beam separator or the third color filter and the fourth color filter, and transmits or reflects the left and right images. To accommodate all, it reflects changes the polarization direction of the stereoscopic projection optical engine using the EL panel, characterized in that the course image ever securing two times amount of light by light ever used for both the left and right polarization is discarded. The stereoscopic projection optical system using an elcos image panel according to claim 1, wherein a color wheel for selectively transmitting incident light is formed between the second polarization beam splitter and the first color filter or between the light source and the glass rod. engine. delete The method of claim 1, wherein when the light source is formed of a light emitting diode, a second color filter, a third color filter and a fourth color filter are disposed on three surfaces of the second polarization beam splitter, respectively, Two green light silicon liquid crystal panels are formed on a plurality of surfaces of the beam separator, and a red light silicon liquid crystal panel and a blue light silicon liquid crystal panel are respectively formed on the plurality of surfaces of the third and fourth color filters. Three-dimensional projection optical engine using the Elcos image panel, characterized in that. The method of claim 1, wherein when the light source is formed of a white light lamp, the first color filter, the second color filter, the third color filter, the fourth color filter are disposed on four sides of the second polarization beam splitter, respectively. A dummy prism block for transmitting light incident through the first color filter is formed at one side of the first polarization beam splitter, and a path of light traveling toward the one side of the dummy prism block and the first polarization beam splitter. An illumination auxiliary lens is formed between the plurality of mirrors for changing and the mirrors, and a green silicon liquid crystal panel is formed on a plurality of surfaces of the first polarization beam separator, respectively, and a plurality of third color filters and fourth color filters. In terms of the three-dimensional projection optical engine using the Elcos image panel, characterized in that the red light silicon liquid crystal panel and the blue light silicon liquid crystal panel is disposed. 3. The color wheel of claim 2, wherein the color wheel is formed of a half blue filter and a half of a red filter based on the center, or half of green and blue transmits, and the other half of green and red transmits. Three-dimensional projection optical engine using the Elcos image panel, characterized in that made of any one of the filter coating. The stereoscopic projection optical engine using the Elcos image panel according to claim 1, wherein a lens for condensing the chief rays of light is formed between one side of the silicon liquid crystal panel or the polarization beam separator and the color filter. The stereoscopic projection optical engine of claim 1, wherein the color filter is formed to reflect green light and to transmit red and blue light, or to reflect red and blue light and to transmit green light. A light source, a glass rod for uniformly forming the light generated from the light source in a plurality of total reflections, an illumination lens for illuminating uniform light passing through the glass rod, a color filter for separating the illuminated light according to color; Polarized beam splitter that transmits the reflected or reflected color light to the polarization component and reflects and separates the S polarization, and silicon that separates the red, green, and blue light into an image signal, and changes the direction of polarization. In a three-dimensional projection optical engine comprising a liquid crystal panel and a projection lens for projecting the image signal formed in the silicon liquid crystal panel on the screen,
The light source is formed of a light emitting diode (LED) capable of realizing white light, and the polarizing beam separator and the color filter are arranged in one or two, the plurality of surfaces of the polarizing beam separator and the green silicon liquid crystal panel and And red and blue silicon liquid crystal panels are arranged respectively, and accommodates both the left and right images transmitted or reflected, and changes the polarization direction to reflect them so that they can be used both without discarding the left and right polarizations so as to secure double the amount of light. 3D projection optical engine using Elcos image panel. The method of claim 9, wherein the light emitting diodes (LEDs) are arranged so that red light, green light, and blue light are simultaneously irradiated in one direction, or green light is arranged so that red light and blue light are crossed at right angles to each other in a tile direction. A three-dimensional projection optical engine using an Elcos image panel, characterized in that. The light emitting diodes (LED) of claim 9 or 10, when the red light, the green light, and the blue light are arranged to be irradiated simultaneously in one direction, the polarizing beam splitter and the color filter are disposed to face each other, and the green light emitting diodes When the red light and blue light emitting diodes in one direction are arranged to cross and irradiate at right angles to each other in the tile direction, the polarizing beam separators are arranged in two, and the color filters are arranged in one, or the polarizing beam separators A three-dimensional projection optical engine using the Elcos image panel, characterized in that the color filter is arranged in each one. 12. The stereoscopic projection optical engine of claim 11, wherein the polarizing beam separator is formed in a cube shape or a grid pattern flat plate shape. A light source, a glass rod for uniformly forming the light generated from the light source in a plurality of total reflections, an illumination lens for illuminating uniform light passing through the glass rod, a color filter for separating the illuminated light according to color; Polarized beam splitter that transmits the reflected or reflected color light to the polarization component and reflects and separates the S polarization, and silicon that separates the red, green, and blue light into an image signal, and changes the direction of polarization. In a three-dimensional projection optical engine comprising a liquid crystal panel and a projection lens for projecting the image signal formed in the silicon liquid crystal panel on the screen,
The polarizing beam splitter is formed of a first polarizing beam splitter, a second polarizing beam splitter, and a third polarizing beam splitter, and has a first direction in one direction before light travels to the third polarizing beam splitter based on a traveling path of light. And a third color filter disposed simultaneously on one side of the third polarization beam splitter, wherein the first, second and third polarization beam splitters select and reflect or transmit illumination of red light, green light and blue light incident therebetween. Is formed, and a mirror for changing the path of the reflected light is formed on one side of the first polarizing beam splitter in a diagonal direction, and a plurality of surfaces of the first polarizing beam splitter are formed of a green light-emitting silicon liquid crystal panel. Blue light silicon liquid crystal panels are formed on the plurality of surfaces of the second polarization beam separator, respectively, and red light silicon liquid crystal panels are formed on the plurality of surfaces of the third polarization beam separator. A three-dimensional projection optical engine using the Elcos image panel, characterized in that it accommodates both the left and right reflected images, and changes the polarization direction and reflects them so that they can be used without discarding the left and right polarizations. The stereoscopic projection optical engine of claim 13, wherein the third color filter comprises an X-cube that transmits green light and reflects red and blue light. The stereoscopic optical engine of claim 13, wherein the light source is formed of any one of a white light lamp and a light emitting diode capable of implementing white light. The light source of claim 15, wherein the light source formed of the light emitting diode is disposed to allow green light to enter the first polarization beam splitter, and to allow blue light to enter the second polarization beam splitter, and the third polarization beam splitter includes: A three-dimensional projection optical engine using an Elcos image panel, characterized in that the red light is arranged to be incident.

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