CN1661463A - Projection type image display capable of function of adjustig illumination and adjustring method - Google Patents
Projection type image display capable of function of adjustig illumination and adjustring method Download PDFInfo
- Publication number
- CN1661463A CN1661463A CN 200510045728 CN200510045728A CN1661463A CN 1661463 A CN1661463 A CN 1661463A CN 200510045728 CN200510045728 CN 200510045728 CN 200510045728 A CN200510045728 A CN 200510045728A CN 1661463 A CN1661463 A CN 1661463A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- stage
- illumination
- image display
- lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Projection Apparatus (AREA)
Abstract
The present invention relates to a projection image display and its regulation method. It is characterized by that at the same time of regulating quantity of light illuminated from light source by utilizing shutter is has the function of regulating luminance of the image projected on the screen also. Said invenled image display is formed from the following several portions: lamp as light source, optical element for utilizing the light illuminated from the above-mentioned lamp to output the defined image signal, optical engine placed between the above-mentioned lamp and optical element for regulating quantity of the light incident upon optical element from lamp and equipped with shutter, at least more than one optical sensor placed on the defined position of the screen for determining the luminance of projected image and shutter driving circuit for controlling shutter operation according to the luminance data transferred by optical sensor.
Description
Technical field
The present invention relates to have the projection type image display and the control method thereof of illumination regulatory function, furtherly, be particularly related to when utilizing shutter to regulate the light quantity that penetrates from light source, image illumination on the screen regulates to being incident upon, projection type image display and control method thereof with this function.
Background technology
Recently, along with the development of information industry, also more and more at the demand of the video display that can show giant-screen.Meanwhile, in the middle of the video display that can show large-scale picture, gain great popularity to use the digital optical processing grenade instrumentation of the in the majority of projection type image display, particularly LCD liquid crystal display grenade instrumentation or DLP.Such projection type image display is except being used to deliver the discussion, and as the household digital TV pick-up attacnment, its purposes is also enlarging gradually.
General projection type image display really is divided into image according to its projection way and projects two kinds of the front projection type in screen front and rear projection-types that image projects the screen back side.
Fig. 1 is the main composition skeleton diagram of the rear projection-type video display of conventional art.
With reference to Fig. 1, can see, the rear projection-type video display be by shell (100) and, the screen of shell front and, the light engine (104) of projection image and, the image (106) that casts out from above-mentioned light engine reflexes to mirror portion (106) formation on the screen.
Above-mentioned light engine (104) comprise lamp (10) and, the projection that will penetrate lamp or reflected light be exported to the optical element (50) of projection camera lens (not shown).
Optical element mainly uses liquid crystal display LCD plate and digital optical processing dmd panel (situation of DLP mode).Below, further describe the formation of above-mentioned light engine.
Fig. 2 is the main composition skeleton diagram according to the light engine of conventional art.
Fig. 2 is illustrated to be optical element, is an example of utilizing the light engine of LCD panel.Above-mentioned light engine (104) comprises: a lamp (10), two spectroscopes (12,16), three front mirrors (14,18,20), R/G/B light beam of polarized light splitter (22,24,26), R/G/B LCD panel (28,30,32) and prism.
White light from above-mentioned lamp (10) ejaculation, by above-mentioned two spectroscope after separatings, obtain once more separating by wavelength R/G/B again, incide R/G/B light beam of polarized light splitter (22 then respectively, 24,26), be divided into S-polarisation and P-polarisation at last, wherein the P-polarisation incides R/G/B LCD panel (28,30,32) afterwards, after in above-mentioned prism (34), being synthesized, by camera lens (not shown) projection image.
By foregoing as can be seen, projection type image display is to use lamp as light source, lamp then drives under the ballast resistor effect, lamp drives under the ballast resistor effect and when entering into the stabilization sub stage, to penetrate fixing light quantity, above-mentioned light quantity can not be regulated arbitrarily in product development stage and product operational phase.
On the one hand, the size of the porjection type display of making (being screen size) has nothing in common with each other, and the light quantity that penetrates from lamp is identical on the contrary, therefore projects the light quantity on the unit area of different size screen, and promptly illumination also has nothing in common with each other.
The difference of illumination between the product of Chan Shenging has hindered the appearance of optimal images therefrom.For example, the lamp of 60 inches porjection type TVs will be applicable to, use when 40 inches porjection type TV that too high because of illumination, the image that shows on the picture is clear inadequately.
And above-mentioned lamp has the length with service time, and its brightness is the feature of deepening gradually also.So long-time when using product, problems such as image brilliance instability in the display frame or variation can occur.
Summary of the invention
The objective of the invention is to develop for the variety of issue that solves above-mentioned conventional art, its purpose is to provide projection type image display and control method thereof.Promptly be not limited to the size of product, can both regulate the image illumination that projects on the screen.
And another object of the present invention is, projection type image display and control method thereof are provided.That is, be not limited to the length of service time, can both regulate from lamp and incide light quantity on the optical element.
The objective of the invention is to be achieved through the following technical solutions:
Projection type image display with illumination regulative mechanism, promptly as the lamp of light source and, the light that utilizes above-mentioned lamp to penetrate export institute's fixing signal optical element and, be configured between above-mentioned lamp and the optical element, be used for regulating from lamp incide the light quantity on the optical element the light engine with shutter and, be configured in and be used for measuring projection image illumination on the position of screen regulation, at least more than one optical sensor and, control the driving circuit of shutter action based on the illumination data that sends from above-mentioned optical sensor and form.
Above-mentioned projection type image display has the characteristics of rear projection-type video display.
Above-mentioned optical sensor is configured in fore shell costa colpi inboard.
Shutter is made of following components and characteristics, have gear-like the 1st rotation section and, rotation in response to above-mentioned the 1st rotation section, make variable areaization, and cut off by lamp penetrate light the light obstruct section and, after matching with the gear of the 1st rotation section with gear shape, the 2nd rotation section of rotating continuously and, be connected the 2nd rotation section central shaft, provide the power part of power to constitute to it.
Above-mentioned optical element comprises, LCD panel or digital optical processing plate.
Projection type image display control method with illumination regulative mechanism, the adjusting projection type image display is incident upon the image illumination method on the screen, constitute by following several stages: (a) according to set from the command signal of outside input shutter adjust mode stage and, (b) with the whole white pattern project on the above-mentioned screen stage and, (c) be installed on the screen institute allocation, at least more than one optical sensor, the stage that illumination is measured and, (d) measured value of more above-mentioned illumination and set standard value stage and, when (e) the said determination value is consistent with above-mentioned standard value, stop this step stage and, when (f) said determination value and above-mentioned standard value are inconsistent, utilize shutter regulate from lamp incide the light quantity of optical element stage (g) and, above-mentioned (c) stage to (f) stage is carried out stage formation repeatedly.
Above-mentioned (b) stage comprised with the next stage: whether passed through after alarm lamp drives certain hour stage and, through behind the certain hour, project stage on the above-mentioned screen with the whole white pattern.
Advantage of the present invention and effect are:
Based on the present invention, can regulate the light quantity that incides optical element from lamp, thereby make the image brightness value that projects on the screen, be adjusted to the brightness value that embodies optimal images.
Thereupon, when the size of product is different, the image brightness value that is incident upon on the screen can be regulated equally, thereby best image can be shown.
Also have, in the present invention, lamp can utilize shutter to be added to the light quantity that is mapped to optical element when after a while its brightness of use begins deepening, reaches the effect that stable maintenance is incident upon the optimal images brightness value on the screen.
Description of drawings
Fig. 1 is the main composition skeleton diagram of the rear projection-type video display of conventional art;
Fig. 2 is the main composition skeleton diagram of the light engine of conventional art;
Fig. 3 is in the representative instance of the present invention, the structure skeleton diagram of rear projection-type video display;
Fig. 4 is in the representative instance of the present invention, the front skeleton diagram of fast door structure;
Fig. 5 is in the representative instance of the present invention, the plane skeleton diagram of fast door structure;
Fig. 6 is in the representative instance of the present invention, is incident upon the flow process skeleton diagram of the screen adjusted illumination sequence of operation of projection type image display.
＜
The explanation of accompanying drawing major part symbol
10: lamp 50: optical element
100: shell 102: screen
104: light engine 106: mirror portion
200: shutter 220: optical sensor
Embodiment
Describe representative instance of the present invention in detail with reference to accompanying drawing 3 to 6 here.
Fig. 3 is in the representative instance of the present invention, the formation skeleton diagram of back side projection video display.
In inscape same section shown in Figure 1, used unified reference number, in this no longer repeat specification.
With reference to Fig. 3 as can be seen, the light engine of above-mentioned rear projection-type video display (104) comprises the shutter (200) that appends configuration between lamp (10) and the optical element (50).Shutter is by fast gate drive circuit (210) control, and fast gate drive circuit (210) is controlled above-mentioned shutter operation by the illumination data that the optical sensor more than at least 1 (220) that is configured on the above-mentioned screen institute allocation is sent.
Optical sensor (220) will be the light quantity of having measured on the screen unit area of being incident upon, and promptly the illumination data value sends fast gate drive circuit (210) to.And optical sensor (220) is preferably disposed on fore shell costa colpi (not shown) inboard of photo frame shape of projection type image display front.
Usually, overleaf in the projection type image display, what are a little bit smaller to look image that image that the hearer sees comes out than actual displayed, and this is to cause because be configured in the image that the fore shell costa colpi of screen front hides external angle.Thereupon, optical sensor the position preferably is set, should be that image can throw into, but look the fore shell costa colpi inboard that the hearer but can't see.
Fig. 4 is in the representative instance of the present invention, illustrates the front skeleton diagram of fast door structure, and Fig. 5 is the plane skeleton diagram of above-mentioned fast door structure.
With reference to Fig. 4 and Fig. 5 being constructed as follows of shutter (200) is described; Have gear-like the 1st rotation section (206) and, to respond the rotation of above-mentioned the 1st rotation section, make variable areaization, and cut off from lamp penetrate light light obstruct section (208) and, the 2nd rotation section formation that matches and rotate continuously with the gear of the 1st rotation section with gear shape.In the inboard space that forms of above-mentioned smooth obstruct section is exactly the portion that passes through (209) of light.
And the central shaft of above-mentioned second rotation section (202) is connected in motor, and its power passed on axle (203) to be communicated to second rotation section (202) by power when motor rotated, and at this moment second rotation section (202) begin to rotate.Also rotated thereupon first rotation section when rotated second rotation section, thereby reach the variable areaization of light obstruct section (208).Thus to regulating by the light quantity of shutter the light quantity that penetrates from lamp.
On the one hand, above-mentioned power part (204) is by fast gate drive circuit (210) control, and above-mentioned shutter drive division (210) is regulated the work of above-mentioned engine by the illumination data in response to optical sensor (220) incident.
Shown in Figure 6 is in the representative instance of the present invention, regulates the illumination sequence of operation flow process skeleton diagram that is incident upon on the projection type image display screen.
With reference to Fig. 6 as can be seen, the porjection type display is under the state of (opening) ON, and the user could operate by telepilot, sets the adjustment modes (stage 10) of shutter, then to the lamp of light engine, whether passed through 10 minutes (stage 12) after the driving and judged.This is because lamp that projection type image display possessed, usually after driving through 5 to 6 minutes just can be stable the reason of ejaculation light.In addition, should particularly point out, need not take this as the standard nothing but an example in so-called 10 minutes.
If also not through 10 minutes, (in the stage 12 " not being ") will be presented at (stage 14) after the screen to the board of informing of " please resetting after a while " so, stop this step.
Simultaneously, after driving, lamp, will be incident upon (stage 16) on the screen with the whole white pattern through 10 minutes the time ("Yes" in the stage 12).Then, dispose at least more than one optical sensor on the screen, this optical sensor is measured the image illumination (stage 18) that is incident upon on the screen.Then, above-mentioned optical sensor measured value is sent in the fast gate drive circuit (stage 20).At last, judge whether consistent (stage 22) of said determination value and set standard value.Above-mentioned set standard value refers to various products, the brightness value that needs when showing optimal images.Also have, when judging that unanimity whether, need not leave no choice but reach consistent, the difference of said determination value and set standard value should be thought in certain error allowed band the time consistent.
If, when said determination value and above-mentioned set standard value are inconsistent (stage 22),, from the light that lamp penetrates, the light quantity by shutter is regulated by driving shutter.At this moment,, should operate shutter so the light quantity by shutter is diminished, if the said determination value is then carried out inverse operation than under the little situation of above-mentioned set standard value if the said determination value is bigger than above-mentioned set standard value.
Then, get back to the stage 18, aforesaid repeatedly a series of stages.
Simultaneously, when stages 22 measured value is consistent with set standard value,, should stop the operation of all shutter adjustment modes according to the present invention.
Claims (7)
1. the projection type image display that has the illumination regulative mechanism, it is characterized in that: promptly as the lamp of light source and, the light that utilizes above-mentioned lamp to penetrate export institute's fixing signal optical element and, be configured between above-mentioned lamp and the optical element, be used for regulating from lamp incide the light quantity on the optical element the light engine with shutter and, be configured in and be used for measuring projection image illumination on the position of screen regulation, at least more than one optical sensor and, control the driving circuit of shutter action based on the illumination data that sends from above-mentioned optical sensor and form.
2. the projection type image display with illumination regulative mechanism as claimed in claim 1 is characterized in that: above-mentioned projection type image display has the feature of rear projection-type video display.
3. the projection type image display with illumination regulative mechanism as claimed in claim 2 is characterized in that: above-mentioned optical sensor is configured in fore shell costa colpi inboard.
4. the projection type image display with illumination regulative mechanism as claimed in claim 1, it is characterized in that: shutter is made of following components, have gear-like the 1st rotation section and, rotation in response to above-mentioned the 1st rotation section makes variable areaization, and cut off by lamp penetrate light the light obstruct section and, after matching with the gear of the 1st rotation section with gear shape, the 2nd rotation section of rotating continuously and, be connected the 2nd rotation section central shaft, provide the power part of power to constitute to it.
As claim 1 to the described projection type image display of claim 4 with illumination regulative mechanism, it is characterized in that: above-mentioned optical element comprises, LCD panel or digital optical processing plate.
6. the projection type image display control method that has the illumination regulative mechanism, it is characterized in that: the adjusting projection type image display is incident upon the image illumination method on the screen, constitute by following several stages: (a) according to set from the command signal of outside input shutter adjust mode stage and, (b) with the whole white pattern project on the above-mentioned screen stage and, (c) be installed on the screen institute allocation, at least more than one optical sensor, the stage that illumination is measured and, (d) measured value of more above-mentioned illumination and set standard value stage and, when (e) the said determination value is consistent with above-mentioned standard value, stop this step stage and, when (f) said determination value and above-mentioned standard value are inconsistent, utilize shutter regulate from lamp incide the light quantity of optical element stage (g) and, above-mentioned (c) stage to (f) stage is carried out stage formation repeatedly.
7. the projection type image display control method with illumination regulative mechanism as claimed in claim 6, it is characterized in that: above-mentioned (b) stage comprised with the next stage: whether passed through after alarm lamp drives certain hour stage and, through behind the certain hour, project stage on the above-mentioned screen with the whole white pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510045728 CN1661463A (en) | 2005-01-24 | 2005-01-24 | Projection type image display capable of function of adjustig illumination and adjustring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510045728 CN1661463A (en) | 2005-01-24 | 2005-01-24 | Projection type image display capable of function of adjustig illumination and adjustring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1661463A true CN1661463A (en) | 2005-08-31 |
Family
ID=35010846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510045728 Pending CN1661463A (en) | 2005-01-24 | 2005-01-24 | Projection type image display capable of function of adjustig illumination and adjustring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1661463A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654721A (en) * | 2011-03-01 | 2012-09-05 | 三菱电机株式会社 | Projection display device |
| CN109283192A (en) * | 2018-11-20 | 2019-01-29 | 苏州精濑光电有限公司 | Illumination auto-correction method, apparatus and system |
-
2005
- 2005-01-24 CN CN 200510045728 patent/CN1661463A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654721A (en) * | 2011-03-01 | 2012-09-05 | 三菱电机株式会社 | Projection display device |
| CN102654721B (en) * | 2011-03-01 | 2014-11-19 | 三菱电机株式会社 | Projection display device |
| CN109283192A (en) * | 2018-11-20 | 2019-01-29 | 苏州精濑光电有限公司 | Illumination auto-correction method, apparatus and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104298055B (en) | Scialyscope | |
| CN1723415A (en) | Projection display | |
| CN1779503A (en) | Optical engine, a projection apparatus having the same, and a method for controlling optical engine of projection apparatus | |
| CN1794084A (en) | Projection video display device | |
| CN1641470A (en) | Projector | |
| CN1890965A (en) | Display device and display method | |
| CN1453605A (en) | Optical system and display using the same optical system | |
| JP2005003744A (en) | Projection type picture display device | |
| CN1619356A (en) | Projection-type image display apparatus | |
| CN1856735A (en) | Lighting device, image display unit and projector | |
| US6712473B2 (en) | Mirror array device and projection type display apparatus using the same | |
| CN1719301A (en) | Device and method for adjusting color wheel index | |
| JP4679947B2 (en) | projector | |
| US7825362B2 (en) | Projection device having a lens adjusting unit adjusting a focus of an adjustable collimator according to the distance between a light source and the adjustable collimator | |
| CN1617043A (en) | Projector | |
| CN1661463A (en) | Projection type image display capable of function of adjustig illumination and adjustring method | |
| US6650460B2 (en) | Projection type display apparatus | |
| CN1932581A (en) | Optical projecting system utilizing integrated colour wave filter on silicon plate liquid crystal microdisplay LCOS | |
| JP2003186111A (en) | Illuminator, projector and driving method therefor | |
| CN1173326C (en) | Image display and color signal adjuster for use therefor | |
| JPH05224155A (en) | Projection type liquid crystal display device | |
| CN1595288A (en) | Image projection apparatus | |
| CN1893599A (en) | Projection capable of regulating contrast | |
| CN101377612B (en) | Projector and contrast regulating device thereof | |
| CN1490641A (en) | Rolling projective system and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |