CN1740903A - Projector lens cap - Google Patents
Projector lens cap Download PDFInfo
- Publication number
- CN1740903A CN1740903A CN200510047238.0A CN200510047238A CN1740903A CN 1740903 A CN1740903 A CN 1740903A CN 200510047238 A CN200510047238 A CN 200510047238A CN 1740903 A CN1740903 A CN 1740903A
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- lens
- mentioned
- lens cap
- projector
- projection camera
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Abstract
The present invention relates to a component of projector, in the concrete, it is a lens cover for opening and closing said projection lens. It is characterized by that the face opposite to the projection lens is equipped with a reflecting plate. Said invention also provides the concrete structure of said reflecting plate. Said reflecting plate mainly is used for preventing thermal deformation of lens cover and prolonging service life of lens cover.
Description
Technical field
The present invention relates to a kind of projector components, is exactly the lens cap of open and close projection camera lens specifically.
Background technology
Recently, the display device of big picture, high image quality is becoming new focus, and up to now, the most representative product of this big picture display device surely belongs to projection TV and projector.
At this wherein, LCD (liquid crystal display) projector and DLP (digital processing) projector are arranged in the above-mentioned projector.Above-mentioned projector enlarges the images such as screen that project outer setting by the first image of projecting mirror and shows on the auxilliary material.
On the one hand,, will influence overall performance if small damage takes place in the material aspect of above-mentioned projection camera lens, thus to note preventing bump and absorption foreign matter, so when not using, cover keeping with lens cap.
Below just be elaborated as follows with reference to 1 pair of projector of accompanying drawing based on conventional art.
As shown in Figure 1, outward appearance based on the common LCD projector (1) of conventional art is logical specific sheath cover (10), inside at above-mentioned sheath cover (10) is equipped with a plurality of optical accessories, and also having the engine module (figure is not being shown) of show image, the image that has demonstrated from above-mentioned engine module projects the outside by projection camera lens (20) expansion.
At this moment, the place ahead of above-mentioned projection camera lens (20) has the lens cap (30) of control projection camera lens (20) switch, during use, opens lens cap (30) projection image; When not using,, close lens cap (30), take care of after covering projection camera lens (20) in order to protect projection camera lens (20).
But, exist following problem points based on the above-mentioned projector of conventional art.
Above-mentioned lens cap (30) adopts plastic material to be made into, and the light prolonged exposure by projection camera lens (20) projection will wear out, discard.
Promptly, projector (1) is in the process of using, in order to carry out other explanations or other operations, under the state that is driving above-mentioned projector (1), when closing projection camera lens (20), because from throwing the above-mentioned lens cap of light prolonged exposure (30) that camera lens (20) projects, the temperature of above-mentioned lens cap (30) will rise with above-mentioned lens cap (30), and then thermal deformation will take place, or even lens cap (30) is aging, discarded.
Summary of the invention
The object of the present invention is to provide a kind of lens cap with projector of following function.That is, prevent the lens cap thermal deformation, increase the service life.
The objective of the invention is to be achieved through the following technical solutions:
Lens cover of projector comprises as the lower part: be installed in the inner optical lens of sheath cover, with the projection camera lens that the image that above-mentioned optical lens projected throws to the outside, the lens cap of the above-mentioned projection camera lens of open and close; In addition, also has reflecting plate on the opposite of above-mentioned projection camera lens.
Said reflection plate is that zone line forms the even number curved surface to the inner surface of lens cap.
The material of said reflection plate is a metallic aluminium.
The vertical plane of the inner surface of above-mentioned lens cap or zone line surface to the inside form the even number curved surface.
Said reflection plate is made up of metal tape.
The material of above-mentioned metal tape is a metallic aluminium.
Advantage of the present invention and effect are:
1. can effectively prevent the thermal deformation of the lens cap that light caused that goes out by the projecting mirror hair, thereby prolong the serviceable life of lens cap to greatest extent.
2. when using lens cap to close the projection camera lens, the light that can stop above-mentioned projection camera lens to be sent fully exposes lens cap.
Description of drawings
Fig. 1 is the outward appearance axonometric drawing that has common LCD projector now;
Fig. 2 is based on the axonometric drawing of an embodiment of lens cap of the present invention;
Fig. 3 is the user mode sectional drawing of Fig. 1 lens cap;
Fig. 4 is based on the sectional drawing of another embodiment of lens cap of the present invention.
The components and parts title explanation of accompanying drawing major part:
20: projection lens 130,230: lens cap
130a, 230a: the medial surface 133a of lens cap: reflecting plate
133a: the one side 233 of the reflecting plate on projection camera lens opposite: metal tape
233a: the one side of projection camera lens opposite metal tape
Embodiment
Embodiments of the invention are elaborated as follows referring now to accompanying drawing.
With reference to Fig. 2 and Fig. 3, the embodiment with lens cap is described in detail as follows to projector of the present invention.
Lens cap (130) based on projector of the present invention (100) is the same with traditional equipment, is positioned at the front of projection camera lens (20), opens during use, by projection camera lens (20), to outside image output; When not using,, close lens cap, take care of after covering projection camera lens (20) in order to protect above-mentioned projection camera lens (20).
But, also have reflecting plate (133) in a side inside (130a) relative with above-mentioned projection camera lens (20) based on the lens cap (130) of projector of the present invention (100).
Here, the side inside (133a) that said reflection plate (133) is corresponding with above-mentioned projection camera lens (20) has the even number curve form towards medial surface (130a) direction of said reflection plate (133), and its material is a metallic aluminium.
Lens cap (130) based on projector of the present invention (100) also is attached with reflecting plate (133) in a side inside (130a) relative with above-mentioned projection camera lens (20), thereby can prevent that lens cap (130) from producing thermal deformation under the irradiation of the light that above-mentioned projection camera lens (20) sends.
Promptly, in the process that projector (100) uses, owing to carried out other explanations or other operations, cause with above-mentioned lens cap (30) and close the projection camera lens when (20), owing to project from projection camera lens (20), be radiated at the light of above-mentioned lens cap (30), reflect, rise so can control the temperature of above-mentioned lens cap (30) to greatest extent by reflecting plate (133).
Therefore, will stop the temperature of above-mentioned lens cap (30) to rise, prevent the thermal deformation of lens cap (30), the damage of lens cap (30) is prevented trouble before it happens, prolong the serviceable life of lens cap (30) to greatest extent.
In addition, Fig. 4 is based on the sectional drawing of another embodiment of lens cap of the present invention.Above-mentioned lens cap (230) side (230a) within it forms the even number curved surface inwards, is attached with the metal tape (233) of aluminium material in above-mentioned medial surface (230a).
At this moment, because the extremely thin cause of above-mentioned metal tape (233), when attached to the even number medial surface (230a) of above-mentioned lens cap (230), the one side (233a) corresponding with above-mentioned projection camera lens (20: please refer to Fig. 2) will form the even number curved surface naturally.
When above-mentioned situation occurring, promptly identical with the said lens cap (130: please refer to Fig. 3) with reflecting plate (133: please refer to Fig. 3) in front, under the state of projector work, owing to carried out other explanations or other operations, cause with above-mentioned lens cap (230) and close the projection camera lens when (20: please refer to Fig. 2), owing to reflect by above-mentioned metal tape (233) from above-mentioned projection camera lens (20) projection bright dipping, rise so can control the temperature of above-mentioned lens cap (230) to greatest extent.
Therefore, will stop the temperature of above-mentioned lens cap (230) to rise, prevent the thermal deformation of lens cap (230), the damage of lens cap (230) is prevented trouble before it happens, prolong the serviceable life of lens cap (230) to greatest extent.
In addition, in aforesaid enforcement example of the present invention, the medial surface (130a, 230a) of above-mentioned lens cap (130,230) forms the even number curve form, this point has been illustrated, but in addition, medial surface has also formed the curved surface of projection to the projection lens direction, at above-mentioned inner surface, certainly use said reflection plate and metal tape.
Claims (6)
1. lens cover of projector is characterized in that comprising as the lower part: be installed in the inner optical lens of sheath cover, with the projection camera lens that the image that above-mentioned optical lens projected throws to the outside, the lens cap of the above-mentioned projection camera lens of open and close; In addition, also has reflecting plate on the opposite of above-mentioned projection camera lens.
2. lens cover of projector according to claim 1 is characterized in that: said reflection plate is that zone line forms the even number curved surface to the inner surface of lens cap.
3. lens cover of projector according to claim 1 is characterized in that: the material of said reflection plate is a metallic aluminium.
4. lens cover of projector according to claim 1 is characterized in that: the vertical plane of the inner surface of above-mentioned lens cap or zone line surface to the inside form the even number curved surface.
5. lens cover of projector according to claim 1, it is characterized in that: said reflection plate is made up of metal tape.
6. the lens cap of projector according to claim 5, it is characterized in that: the material of above-mentioned metal tape is a metallic aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510047238.0A CN1740903A (en) | 2005-09-20 | 2005-09-20 | Projector lens cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510047238.0A CN1740903A (en) | 2005-09-20 | 2005-09-20 | Projector lens cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1740903A true CN1740903A (en) | 2006-03-01 |
Family
ID=36093328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510047238.0A Pending CN1740903A (en) | 2005-09-20 | 2005-09-20 | Projector lens cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1740903A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162987A (en) * | 2011-04-26 | 2011-08-24 | 苏州佳世达光电有限公司 | Lens cover and projector |
| CN102221770A (en) * | 2011-05-25 | 2011-10-19 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN102287695A (en) * | 2011-07-25 | 2011-12-21 | 苏州晶雷光电照明科技有限公司 | Light-emitting diode (LED) projection lamp with lamp body protective structure |
| TWI422953B (en) * | 2011-04-19 | 2014-01-11 | Qisda Corp | Lens cap |
-
2005
- 2005-09-20 CN CN200510047238.0A patent/CN1740903A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI422953B (en) * | 2011-04-19 | 2014-01-11 | Qisda Corp | Lens cap |
| CN102162987A (en) * | 2011-04-26 | 2011-08-24 | 苏州佳世达光电有限公司 | Lens cover and projector |
| CN102162987B (en) * | 2011-04-26 | 2012-07-04 | 苏州佳世达光电有限公司 | Lens cover and projector |
| CN102221770A (en) * | 2011-05-25 | 2011-10-19 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN102221770B (en) * | 2011-05-25 | 2013-06-26 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN102287695A (en) * | 2011-07-25 | 2011-12-21 | 苏州晶雷光电照明科技有限公司 | Light-emitting diode (LED) projection lamp with lamp body protective structure |
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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 |