CN1632692A - Light polarizing plate position adjusting device of liquid crystal projector - Google Patents
Light polarizing plate position adjusting device of liquid crystal projector Download PDFInfo
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- CN1632692A CN1632692A CN 200310119467 CN200310119467A CN1632692A CN 1632692 A CN1632692 A CN 1632692A CN 200310119467 CN200310119467 CN 200310119467 CN 200310119467 A CN200310119467 A CN 200310119467A CN 1632692 A CN1632692 A CN 1632692A
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Abstract
This invention relates to a bias plate position adjusting device of the LCD projector, which comprises the following elements: bias plate panel fixed on the mouth end; bias plate fixing panel of the bending part with long hole fixed in the bias plate; setup guide device set on the optics engine top part and distributed on the long hole; to adjust the bias plate position and to plug it into the fixed hole and fix it to the fixing part of the bias plate fixing panel.
Description
Technical field
The present invention relates to a kind of Polarizer position regulator that the liquid crystal projection apparatus of projects images contrast is improved in liquid crystal projection apparatus Polarizer position of adjusting.In more detail, can correctly form with vertical direction about the Polarizer that is arranged on liquid crystal projection apparatus liquid crystal layer front and back exactly, and can improve the Polarizer position regulator that incides the screen optical contrast ratio by projector.
Background technology
General liquid crystal projection apparatus is the input that receives picture signal from computing machine, video camera, digital video disc player (DVD) and video tape recorder (VTR), and this signal is projected the image machine of audiovisual various uses that big picture screen carries out the tip of various introductions or multimedia education.And projector itself is installed in the function that machine intimate is realized rear-projection TV.
To as such use and the optical system of widely used liquid crystal projection apparatus describes as follows.
Fig. 1 is the optical system key diagram of the general liquid crystal projection apparatus of expression.
With reference to Fig. 1 as seen, the optical system 100 of liquid crystal projection apparatus is made of following structure: the light source 10 that produces white light; Focusing is by the white light of light source 10 generations and the catoptron 20 that reflects to a direction; White light lighting area by catoptron 20 reflection and the area size of liquid crystal board 80a, 80b, the 80c also fly eye lens FEL (Fly Eye Lens) 30 of selective light intensity that is complementary; Controlled white light reflects in fly eye lens FEL30 catoptron 40a, 40b, 40c, 40d; The collector lens 50 that the rectilinear propagation of light is compensated; Only allow color filter 60a, the 60b that other whole light reflect by the light of certain color; Beam splitting lens 70a, 70b, 70c that the light with certain color by color filter 60a, 60b is filtered again; Carry out the liquid crystal board 80a to 80c of activate by light with certain color by beam splitting lens 70a to 70c; The image with certain color that produces in liquid crystal board 80a to 80c carries out the Amici prism 90 that combined transformation is a complete image; The image that is combined is amplified projecting mirror 95 formations such as grade that project screen in Amici prism 90.
On the other hand, also comprise attached to the 1st Polarizer 71a, 71b, the 71c of beam splitting lens 70a to 70c front portion and be arranged on liquid crystal board 80a to 80c and the 2nd Polarizer 81a, 81b, 81c between Amici prism 90.The 1st Polarizer 71a to 71c and the 2nd Polarizer 81a to 81c correctly throw or cut off for the image that forms in liquid crystal board 80a to 80c, under orthogonal situation it are fixed between the polarizing axis.
Work as above-mentioned projector is simply described as follows: after the redness that the light that shines from lamp source forms among three liquid crystal board 80a to 80c, green, blue three kinds of color images throwed, carrying out combined transformation by Amici prism 90 was complete image.And the image that is combined constitutes the image that is exaggerated by projection lens 95 on screen, and provides the big picture image that has distinctness and vividly feel to the user.
In having the liquid crystal projection apparatus of this specific character, can be referred to as the brightness and the contrast of liquid crystal projection apparatus performance index, in order to represent with state suitably, it is important that the various optical components, particularly a pair of Polarizer that constitute illuminator are kept vertical alignment (Align) beyond all else.
Particularly, be that benchmark normally is fixed on the Amici prism 90 in advance at the 2nd Polarizer 81 of after 80s formation of liquid crystal board with the direction of illumination of light, therefore, it is very important being fixed on stable position at liquid crystal board 80 anterior the 1st Polarizers 71 that form.In other words, for being orthogonal fully, the polarizing axis that makes 71 pairs the 2nd Polarizers 81 of the 1st Polarizer becomes important problem.
Fig. 2 is illustrated in the beam splitting lens that adheres on traditional Polarizer the structure key diagram is set.
With reference to Fig. 2 as seen, beam splitting lens 70 is made of following structure: in traditional beam splitting lens 70 for only by an axial light, residue light all absorbs and the 1st Polarizer 71 that adheres to; For beam splitting lens 70 is not twisted tangling in the member 1 of light engine side,, block into the truncation surface 72 of surface level with the bottom face of beam splitting lens 70.
And, tangle member 1 and constitute: for the installation portion 2 that beam splitting lens 70 is provided with at liftoff bottom surface certain altitude is installed by following structure; At the vertical plane of installation portion 2 left and right sides, for inserting the slide wall groove 2a that beam splitting lens 70 is provided with certain depth; The 2b of the portion that tangles that the truncation surface 72 of beam splitting lens 70 is installed and is provided with.
On the other hand, the 1st Polarizer 71 is kept the polarization direction of quadrature with projection light direction and the 2nd Polarizer 81, be set to consistent with lens truncation face 72, simultaneously with it attached on the beam splitting lens 70.And why the bottom face at beam splitting lens 70 forms horizontal truncation face 72, is that polarization direction for the 1st Polarizer 71 rotates in beam splitting lens 70 or shakes under the situation, and it can not be twisted.
At this moment, in the bottom face of beam splitting lens 70 with insert the fixedly installation portion that tangles member 12 bottom surfaces of beam splitting lens 70, its reason of why being arranged to level is to catch the troublesome problem of generation when inserting the beam splitting lens 70 that is fixed in the portion of tangling 1 and moving for solution.
But, if the 1st Polarizer 71 is not parallel being attached together with the truncation surface 72 of beam splitting lens 70, then the polarization direction because of the 1st Polarizer 71 is twisted, so can not normally light be projected liquid crystal board 80, thereby the performance of machine reduces the problem that has the brightness that can not regulate light simultaneously, the problem that promptly exists contrast to degenerate.
Particularly, even if the 1st Polarizer 71 correctly is adhered together, be processed into the plane if the 2b of the portion that tangles that forms tangling in the member 1 of joining of the truncation surface 72 with beam splitting lens 70 can not be correct, the direction that then produces Polarizer is the align problem of (Align) of quadrature normally.
Summary of the invention
The present invention is for solving the problem as above-mentioned existence, having proposed is the polarization direction of center each Polarizer of setting before and after it with the liquid crystal board, all fixing, and can improve the Polarizer position regulator of the liquid crystal projection apparatus of the picture contrast that in screen, forms correctly to keep under its quadrature.
And, the present invention proposes and can observe the image that on screen, forms, and affirmation is to the Polarizer position regulator of a pair of Polarizer quadrature.
And, the Polarizer position regulator that the user adjusts the liquid crystal projection apparatus of Polarizer position has easily been proposed.
Be achieved in that in order to solve the problems of the technologies described above the present invention it is to be made of following structure: at the fixing Polarizer fixed part of Polarizer of peristome; The Polarizer fixed panel that the bend of the slotted hole that is provided with at Polarizer fixed part upper bend position is included and constitutes; The installation and guide device that is arranged on light engine top and operates with the fixed orifice that slotted hole is arranged in rows; After adjusting the Polarizer position, be inserted into the fixed orifice and the fixing fixed component of Polarizer fixed panel.
According to as above-mentioned liquid crystal projection apparatus position regulator, can not only correctly adjust bias plate position, and can keep controlled bias plate position securely.
And, projecting direction with light is the 2nd bias plate position that benchmark is arranged on the liquid crystal board rear portion, even twist into to a certain degree, because more than the 1st Polarizer position can adjust to a certain degree, therefore, can more correctly form a pair of Polarizer vertical relation each other.
Advantage of the present invention and effect are as follows: liquid crystal projection apparatus of the present invention can be realized the highest contrast, has better high-quality screen-picture thereby constitute.
And, carry out two Polarizers that the liquid crystal board front and back form in the process in operation, owing in the final process of operation, can adjust again, in manufacture process, can reach the arduous effect that alleviates the operator.
Description of drawings
Fig. 1 is the optical system key diagram of general liquid crystal projection apparatus.
Fig. 2 is that the beam splitting lens attached to traditional Polarizer is provided with the structure key diagram.
Fig. 3 is the decomposition view of bias plate position adjusting gear of the present invention.
Fig. 4 is a bias plate position adjusting gear view of the present invention.
Fig. 5 and Fig. 6 are bias plate position adjusting gear action diagram of the present invention.
Among the figure, 110. guide piece portions; 115. light engine top; 116. installation and guide device; 117. fixed orifice 118. direction protrusions; 120. light engine side; 121. downside patchhole; 122. following lateral guide; 130. Polarizer fixed panel; 131. Polarizer fixed part 132. peristomes; 33. front projection; 134. back side protrusions; 135. bend; 136. slotted hole; 137. position guide piece; 140. fixed component; 150. lens; 151. Polarizer.
Embodiment
Followingly with reference to figure the present invention is constituted example and describe.Only be that the same example that proposes as the present invention is unrestricted, according to the appending of the inscape of other examples in addition of the present invention, delete, change etc. can propose easily.
Fig. 3 is the decomposition view of expression bias plate position adjusting gear of the present invention.
With reference to Fig. 3 as seen, bias plate position adjusting gear of the present invention is to be made of following structure: the direction of illumination at light can be adjusted at the 1st Polarizer position that liquid crystal board the place ahead is provided with; And main composition of the present invention is to support the Polarizer fixed panel of Polarizer and set is constituted in the guide piece portion that light engine is provided with for the Polarizer fixed panel.
Detailed says, Polarizer fixed panel 130 is to be made of following structure: the lens 150 of attaching polarized planel 151; The fixing Polarizer fixed part 131 of said lens 150; Big about Polarizer fixed part 131 central parts by the peristome 132 that is used to install lens 150 of opening; Be arranged on the many fronts projection 133 and the back side protrusions 134 that form around peristome 132 frames; The slotted hole 136 that forms in the extension site of the bend 135 of Polarizer fixed part 131 upside bendings; The position guide piece 137 that is provided with again at the rear of slotted hole 136 etc.And, also comprise being inserted into slotted hole 136 fixed component 140 inner and that be provided with for fixing Polarizer fixed panel 130.Particularly, the bend 135 that slotted hole 136 and position guide piece 137 be set is the slow up and down regulation curvature that is bent to form.
Detailed says, guide piece portion 110 is made of following structure: the installation and guide device 116 that 115 protuberances form on light engine top; On installation and guide device 116 tops greatly about the fixed orifice 117 of forward formation; Also comprise the direction protrusion 118 that is arranged on fixed orifice 117 rear portions and insertion position guide piece 137.And, in light engine side 120, before and after making the both sides, lower end of Polarizer fixed panel 130, can not move, only in the certain limit of the left and right sides, move and be provided with lateral guide 122 and downside patchhole 121 down.On the other hand, light engine top 115 can be regarded as the upside lid that covers light emitting source top.
In more detail, lens 150 are not the beam splitting lenses of illuminator employing but adopt the other Polarizer that is attached with transparent panel 151.Though just do not squeeze the use beam splitting lens, preferably for the reliability of optical axis with easily manufacturedly should use other lens.And, for the Polarizer 151 character reasons that absorb heat preferably also should be used other lens.
And front projection 133 is provided with 1 as the front piece that is used for supporting lens 150 at upside, is provided with 2 at downside.And back side protrusions 134 respectively is provided with two at upside and downside, and two sides respectively are provided with one.Not only can not fall any more before and after it as the above-mentioned peristome 132 that can make lens 150 that is provided with, and can be fixed.
And lens 150 are in front behind projection 133 and back side protrusions 134 fixed positions, and front projection 133 at least therein or back side protrusions 134 are injected viscoses and fixed, and therefore, the lens 150 that are fixed can not shake.The projection of injecting viscose is preferably selected the front projection 133 of upside setting.
On the other hand, because the both sides, lower end of Polarizer fixed part 131 are inserted into downside patchhole 121 simultaneously, therefore, do not influence Polarizer fixed panel 130 move left and right in certain angle (20 degree scope).
And, insert heads at least than the big fixed component 140 of slotted hole 136 width diameters in slotted hole 136 inside.
Installation and guide device 116 is arranged to its top slow distortion and is had certain curvature, and contacts with the crooked position formation face of Polarizer fixed panel 130, and therefore, Polarizer fixed panel 130 can be followed installation and guide device 116 and be carried out move left and right sleekly.And; in fixed orifice 117, insert fixed component 140 and fix its position; insert fixed component 140 afterwards for fixed component 140 is supported securely; not only connect the top of installation and guide device 116; and formed certain boss, thereby whole protection outside of inserting fixed components 140 by the downside that connected.
And for direction protrusion 118, its width is arranged to consistent or smaller with the width of position guide piece 137, and that length is arranged to is more slightly longer than width, and therefore, direction protrusion 118 can move sleekly in position guide piece 137 inside.
Polarizer position regulator forming process to the projector that constitutes as above-mentioned explanation is described as follows.
The Polarizer fixed panel 130 of fixed lens 150 is installed in guide piece portion 110; Detailed saying is exactly to its process, and in Polarizer fixed panel 130 processes were installed, direction protrusion 118 was inserted into position guide piece 137; Fixed orifice 117 and slotted hole 136 are arranged in delegation, and will insert fixed component 140 in fixed orifice 117 that is arranged in rows and slotted hole 136.And both sides, the lower end set of Polarizer fixed part 131 is at downside patchhole 121.
Make 130 set of Polarizer fixed panel in guide piece portion 110 by this action, thereby form the Polarizer position fixing apparatus.
Fig. 4 is fixed on the key diagram of the Polarizer fixed panel 130 of guide piece portion 110 settings for expression.
Polarizer fixed panel 130 is arranged on after the guide piece portion 110, for adjusting the angle of Polarizer, makes projector carry out work at certain hour when observing picture.
Fig. 5 and Fig. 6 are expression bias plate position adjusting gear action diagram of the present invention.
The figure that Fig. 5 counterclockwise tilts for expression the 1st Polarizer, this situation is to rotate in a counter-clockwise direction inclination because the 2nd Polarizer that forms at the rear of liquid crystal board forms direction, tilts with counter clockwise direction again so be arranged on the 1st Polarizer in liquid crystal board the place ahead.Thus, the polarizing axis of Polarizer correctly forms vertical relation.
Fig. 6 is for representing the 1st Polarizer with the counter clockwise direction angled view, and this situation is because the 1st Polarizer that forms at the liquid crystal board rear forms direction, forms with inclination counterclockwise again.
On the other hand, why the 1st Polarizer tilts in a clockwise direction or counterclockwise, be because installation and guide device 116 not only has the bending that forms with regulation curvature up and down, and the bend 135 that forms slotted hole 136 also has the bending that forms with regulation curvature, so, can adjust its curvature and improve user job efficient.
As above-mentioned the 1st Polarizer 151 position adjustment work is that projector is following in working order, adjusts its position when watching the image that projects on the screen; And the light that sees through liquid crystal board with black state as benchmark, at the contrast maximum rating, promptly with the darkest state with the 1st Polarizer 151 in the direction of the clock or rotation counterclockwise fixing.
If demonstrate brighter black in the process of the 1st Polarizer 151 rotations, then this polarizing axis that the 1st Polarizer 151 and the 2nd Polarizer are described is not completed into quadrature; In this case, the 1st Polarizer 151 is rotated in the process, rotates the 1st Polarizer 151 to the polarizing axis direction that correctly forms quadrature and find out quadrature.
On the other hand, the guide piece 122 of downside is rotated in the adjustment process in a clockwise direction or counterclockwise at the 1st Polarizer 151, lens 150 are arranged to can not move to its place ahead or rear, therefore can not disarray before and after the 1st Polarizer 151 ordered states.And direction protrusion 118 and position guide piece 137 is owing to be arranged to 130 of Polarizer fixed panels in move left and right under the state that fixed component 140 leaves, and therefore, the user promotes its convenience in adjusting the bias plate position process.
And, match after the 1st Polarizer 151 angles, fixed component 140 is inserted into the position that fixed orifice 117 fixes Polarizer fixed panel 130.Detailed says, fixed component 140 bodies are inserted into fixed orifice 117 inside; And catoptron portion is hung in the upper side of slotted hole 136, by the very firm fixedly Polarizer fixed panel 130 of fixed component 140.
And, if be completed into the angular setting of the 1st Polarizer 151, then fixed component 140 is inserted fixing after, connect the position in drawing of fixed component 140 and inject viscose to form adhesion fixing, and the position of Polarizer 151 is not twisted by the faint vibration that continues to increase.
Polarizer position regulator as above-mentioned explanation makes redgreenblue in each self-forming of liquid crystal board the place ahead, and contrast of all kinds is configured to state suitably.
And the angle of the 2nd Polarizer that is provided with at the liquid crystal board rear is set to different with user view, therefore, even if to a certain degree rotation is arranged, also needn't the teardown of engine; And constitute suitable high-quality screen by the Polarizer position regulator of the present invention that is adjusted at the formation of liquid crystal board the place ahead.
Claims (8)
1, the Polarizer position regulator of liquid crystal projection apparatus is characterized in that it is to be made of following structure: at peristome fixedly the Polarizer fixed part, the Polarizer fixed panel that is included and constitute at the bend of the slotted hole of the crooked position setting on Polarizer fixed part top of Polarizer; The installation and guide device that is arranged on light engine top and operates with the fixed orifice that slotted hole is arranged in rows; After adjusting bias plate position, be inserted into the fixed orifice and the fixing fixed component of Polarizer fixed panel.
2, the Polarizer position regulator of liquid crystal projection apparatus according to claim 1 is characterized in that installation and guide device and bend are to twist formation up and down with the curvature of regulation.
3, the Polarizer position regulator of liquid crystal projection apparatus according to claim 1 is characterized in that Polarizer is to fix its position by peristome outside projection, and at least more than one projection is injected viscose fixedly secures.
4, the Polarizer position regulator of liquid crystal projection apparatus according to claim 1 is characterized in that installation and guide device forms from light engine top protuberance.
5, the Polarizer position regulator of liquid crystal projection apparatus according to claim 1 is characterized in that swelling on the top of installation and guide device the direction protrusion that forms again; Be the insertion that is arranged in rows with direction protrusion, the position guide piece that in bend, forms again.
6, the Polarizer position regulator of liquid crystal projection apparatus according to claim 1 is characterized in that the position guide piece of the length that forms in bend; Form and consistent with the width of position guide piece or reduce at the top of installation and guide device protuberance, and the bigger direction protrusion of length and width.
7, the Polarizer position regulator of liquid crystal projection apparatus according to claim 1, it is characterized in that drawing of fixed component connect the position be adjust inject after the bias plate position viscose securely viscose glue fix.
8, the Polarizer position regulator of liquid crystal projection apparatus is characterized in that it comprises following part: at peristome fixedly the Polarizer fixed part, the Polarizer fixed panel that is included and constitute at the bend of the formation position guide piece of the crooked position setting on Polarizer fixed part top of Polarizer; Be arranged on the top of light engine and be arranged in rows and form the installation and guide device of direction protrusion with the position guide piece; Move with the contacted bend of installation and guide device and adjust the stationary installation of fixing its position after the angle of Polarizer fixed panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310119467 CN1632692A (en) | 2003-12-25 | 2003-12-25 | Light polarizing plate position adjusting device of liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310119467 CN1632692A (en) | 2003-12-25 | 2003-12-25 | Light polarizing plate position adjusting device of liquid crystal projector |
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| Publication Number | Publication Date |
|---|---|
| CN1632692A true CN1632692A (en) | 2005-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310119467 Pending CN1632692A (en) | 2003-12-25 | 2003-12-25 | Light polarizing plate position adjusting device of liquid crystal projector |
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| CN (1) | CN1632692A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352608C (en) * | 2005-11-03 | 2007-12-05 | 友达光电股份有限公司 | Apparatus for removing polarized plate and its holding device |
| CN110471247A (en) * | 2018-05-09 | 2019-11-19 | 深圳光峰科技股份有限公司 | The projection arrangement of reflective mirror regulating mechanism and the application regulating mechanism |
-
2003
- 2003-12-25 CN CN 200310119467 patent/CN1632692A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352608C (en) * | 2005-11-03 | 2007-12-05 | 友达光电股份有限公司 | Apparatus for removing polarized plate and its holding device |
| CN110471247A (en) * | 2018-05-09 | 2019-11-19 | 深圳光峰科技股份有限公司 | The projection arrangement of reflective mirror regulating mechanism and the application regulating mechanism |
| CN110471247B (en) * | 2018-05-09 | 2021-04-30 | 深圳光峰科技股份有限公司 | Reflector adjusting mechanism and projection device applying same |
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