KR20100097445A - Apparatus for controlling brighting lamp of prpjector - Google Patents
Apparatus for controlling brighting lamp of prpjector Download PDFInfo
- Publication number
- KR20100097445A KR20100097445A KR1020090016385A KR20090016385A KR20100097445A KR 20100097445 A KR20100097445 A KR 20100097445A KR 1020090016385 A KR1020090016385 A KR 1020090016385A KR 20090016385 A KR20090016385 A KR 20090016385A KR 20100097445 A KR20100097445 A KR 20100097445A
- Authority
- KR
- South Korea
- Prior art keywords
- distance
- illuminance
- lamp
- beam amount
- screen
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/317—Convergence or focusing systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
Abstract
Description
The present invention relates to a projector lamp brightness adjusting device, and more particularly, to a projector lamp brightness adjusting device to adjust the brightness of the projector lamp according to the ambient illumination of the projector and the irradiation distance with the screen.
In general, a projector is a device that receives signals from various video devices such as a TV, a VCR, a DVD player, a PC, a camcorder, and displays an enlarged image on a screen through a lens. The ability to automatically display optimal screens simply by plugging them in is now widely used for corporate presentations and home theaters.
In order to secure a projection distance, projectors that are widely used now implement a magnified image on a screen by irradiating a beam while being installed at a position far from the screen, and the beam irradiated from the projector is to be constantly irradiated. For example, when the irradiation distance between the projector and the screen is far or near, the image is blurred on the screen or irradiated beyond the size of the screen, making it difficult to display a clear screen.
Therefore, the user adjusts the lens to match the irradiation distance between the projector and the screen, and adjusts the screen size, focuses, and the like.
In recent years, with the development of technology, projectors have been miniaturized to be easy to carry and use, so that they can be used easily regardless of place while carrying around, but all projectors use a light source device regardless of size. In order to implement, it is necessary to secure the irradiation distance, to install at a predetermined distance from the screen, and to secure appropriate illuminance.
When the presentation is made, however, the projector is placed in various environments. At this time, the projector irradiates a fixed beam amount irrespective of the surrounding environment. For example, the illumination of the surrounding environment is larger than the beam amount irradiated from the lamp of the projector. In the case of light, the screen is relatively dark due to the contrast difference, so that the image is not easily blurred. On the other hand, when the surrounding environment is dark, the illuminance is less than the fixed beam amount of the lamp of the projector, and thus the beam amount of the lamp is excessively irradiated. It is a case.
In addition, when the projector is installed at a close irradiation distance to the screen when the light is relatively bright with respect to the beam amount irradiated at a predetermined irradiation distance by the fixed beam amount irradiated from the lamp of the projector when irradiating excessive light Will occur.
In this case, there is no problem in the case of medium and large projectors, but in the case of a portable small projector using a battery, the battery consumption is unnecessarily increased, thereby shortening the use time and further reducing the lamp life. .
An object of the present invention is to adjust the brightness of the lamp to be irradiated according to the environment in which the projector is installed.
In order to achieve the above object, the present invention provides an optical engine for optically expanding and irradiating an input signal, a lamp driver for supplying a driving current to the optical engine, and a signal input to the light engine and the lamp driver. In the projector composed of a control unit for controlling,
The control unit detects the beam amount according to the illuminance and distance detected by the illuminance sensing unit for detecting the illuminance of the surrounding environment and the distance with the screen, and compares the detected beam amount with the currently irradiated beam amount It is characterized by adjusting the brightness.
The control unit lowers the beam amount when the beam amount irradiated is larger than the beam amount according to the illumination intensity of the surrounding environment or the distance to the screen. do.
The illuminance detection unit is composed of an illuminance sensor.
The distance detecting unit is configured of either an ultrasonic wave or an infrared sensor.
The distance sensing unit is provided with a lens focusing wheel for adjusting the focus of the beam irradiated to the screen and a wheel sensing unit for sensing the distance with a variable resistance value associated with the focusing displacement of the lens focusing wheel.
Therefore, according to the present invention, the projector irradiates the beam amount fixed to the screen irrespective of the surrounding environment and detects the beam amount according to the illuminance of the installation environment and the distance to the screen, and according to the present beam amount is larger and smaller than the detected beam amount By controlling the brightness of the lamp to be irradiated by controlling the drive current to a small large, it is possible to reduce the unnecessary drive current of the lamp, and to provide the effect of extending the life of the lamp out.
1 is an overall block diagram of the projector lamp brightness adjustment device of the present invention, FIG. 2 is another embodiment of the projector lamp brightness adjustment device of the present invention, and FIG. 3 is a flowchart of the projector lamp brightness adjustment device of the present invention.
The present invention consists of a
The
The
The
The
The
As shown in FIG. 2, the
The
The
According to the present invention constituted as described above, when power is applied from the
At this time, the beam amount irradiated on the screen is fixed, so the image irradiated on the screen appears blurry or very bright depending on the illuminance of the place where the project is installed and the distance to the screen.
Therefore, as shown in FIG. 3, the
Therefore, it is determined whether the amount of beams detected in the memory according to the detected illuminance and the distance to the screen matches the amount of beams currently irradiated (step 22). If the detected beam amount is consistent with the amount of beams currently irradiated, The
However, if the detected beam amount does not match the beam amount currently irradiated, it is determined whether the beam amount currently irradiated is greater than the detected beam amount, that is, whether it is bright (step 24). In this case, the beam amount currently irradiated than the detected beam amount is determined. If large, that is, bright, the
On the other hand, if the beam amount currently irradiated is not larger than the detected beam amount, i.e., it is not bright, the
1 is an overall block diagram of the projector lamp brightness adjustment device of the present invention
Figure 2 is another embodiment of the projector lamp brightness adjustment device of the present invention
Figure 3 is a flow chart of the projector lamp brightness adjustment device of the present invention
* Description of the symbols for the main parts of the drawings *
11; A
13;
132; A
15;
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090016385A KR20100097445A (en) | 2009-02-26 | 2009-02-26 | Apparatus for controlling brighting lamp of prpjector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090016385A KR20100097445A (en) | 2009-02-26 | 2009-02-26 | Apparatus for controlling brighting lamp of prpjector |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20100097445A true KR20100097445A (en) | 2010-09-03 |
Family
ID=43004659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020090016385A KR20100097445A (en) | 2009-02-26 | 2009-02-26 | Apparatus for controlling brighting lamp of prpjector |
Country Status (1)
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KR (1) | KR20100097445A (en) |
Cited By (10)
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---|---|---|---|---|
US20130275370A1 (en) * | 2012-04-16 | 2013-10-17 | Eugenio Minvielle | Label Content Update System for Nutritional Substances |
US9877504B2 (en) | 2012-04-16 | 2018-01-30 | Iceberg Luxembourg S.A.R.L. | Conditioning system for nutritional substances |
US9892657B2 (en) | 2012-04-16 | 2018-02-13 | Iceberg Luxembourg S.A.R.L. | Conditioner with sensors for nutritional substances |
US9902511B2 (en) | 2012-04-16 | 2018-02-27 | Iceberg Luxembourg S.A.R.L. | Transformation system for optimization of nutritional substances at consumption |
CN108761980A (en) * | 2018-04-19 | 2018-11-06 | 苏州佳世达光电有限公司 | A kind of projection arrangement |
CN108957927A (en) * | 2018-07-19 | 2018-12-07 | 苏州博学智能科技有限公司 | A kind of office projection instrument |
US10209691B2 (en) | 2012-04-16 | 2019-02-19 | Iceberg Luxembourg S.A.R.L. | Instructions for conditioning nutritional substances |
US10207859B2 (en) | 2012-04-16 | 2019-02-19 | Iceberg Luxembourg S.A.R.L. | Nutritional substance label system for adaptive conditioning |
US10215744B2 (en) | 2012-04-16 | 2019-02-26 | Iceberg Luxembourg S.A.R.L. | Dynamic recipe control |
KR20200113127A (en) | 2019-03-22 | 2020-10-06 | 주식회사 케이홀로그램 | Image processing system using projector |
-
2009
- 2009-02-26 KR KR1020090016385A patent/KR20100097445A/en not_active Application Discontinuation
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130275370A1 (en) * | 2012-04-16 | 2013-10-17 | Eugenio Minvielle | Label Content Update System for Nutritional Substances |
US9877504B2 (en) | 2012-04-16 | 2018-01-30 | Iceberg Luxembourg S.A.R.L. | Conditioning system for nutritional substances |
US9892657B2 (en) | 2012-04-16 | 2018-02-13 | Iceberg Luxembourg S.A.R.L. | Conditioner with sensors for nutritional substances |
US9902511B2 (en) | 2012-04-16 | 2018-02-27 | Iceberg Luxembourg S.A.R.L. | Transformation system for optimization of nutritional substances at consumption |
US10209691B2 (en) | 2012-04-16 | 2019-02-19 | Iceberg Luxembourg S.A.R.L. | Instructions for conditioning nutritional substances |
US10207859B2 (en) | 2012-04-16 | 2019-02-19 | Iceberg Luxembourg S.A.R.L. | Nutritional substance label system for adaptive conditioning |
US10215744B2 (en) | 2012-04-16 | 2019-02-26 | Iceberg Luxembourg S.A.R.L. | Dynamic recipe control |
US10332421B2 (en) | 2012-04-16 | 2019-06-25 | Iceberg Luxembourg S.A.R.L. | Conditioner with sensors for nutritional substances |
US10847054B2 (en) | 2012-04-16 | 2020-11-24 | Iceberg Luxembourg S.A.R.L. | Conditioner with sensors for nutritional substances |
CN108761980A (en) * | 2018-04-19 | 2018-11-06 | 苏州佳世达光电有限公司 | A kind of projection arrangement |
CN108957927A (en) * | 2018-07-19 | 2018-12-07 | 苏州博学智能科技有限公司 | A kind of office projection instrument |
KR20200113127A (en) | 2019-03-22 | 2020-10-06 | 주식회사 케이홀로그램 | Image processing system using projector |
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