CN113126396A - Projection device - Google Patents
Projection device Download PDFInfo
- Publication number
- CN113126396A CN113126396A CN201911406339.0A CN201911406339A CN113126396A CN 113126396 A CN113126396 A CN 113126396A CN 201911406339 A CN201911406339 A CN 201911406339A CN 113126396 A CN113126396 A CN 113126396A
- Authority
- CN
- China
- Prior art keywords
- temperature
- lens
- heating mechanism
- heating
- time period
- 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
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention provides a projection device, which comprises a lens and a heating mechanism, wherein the lens is arranged on the projection device, the heating mechanism is attached to the lens, the heating mechanism heats the lens, and after the projection device is started up and if the heating mechanism works, after a first time period, the heating mechanism enables the temperature of the lens to be quickly from the initial temperature to a first set temperature. After the projection device is started, if the heating mechanism does not work, the temperature of the lens rises from the initial temperature to a second temperature after a second time period, and the second temperature is equal to or close to a first set temperature; the first time period is smaller than the second time period, and the heating mechanism enables the lens to be quickly heated to the first set temperature, so that the lens of the projection device can be quickly heated to the set temperature after the projection device is started, the problem that the lens is thermally drifted due to the fact that the temperature of the lens of the projection device changes along with time after the projection device is started is solved, the imaging quality is improved, imaging stability is improved, and the watching effect of a user is good.
Description
Technical Field
The present disclosure relates to projection apparatuses, and particularly to a projection apparatus with a reduced image quality.
Background
At present, a lens in a projection device is frequently out of focus, that is, after the projection device is started and used for more than ten minutes, image characters are increasingly blurred, and the image characters can be watched only by repeatedly focusing.
The lens is composed of a lens and a lens barrel.
The lens can be made of optical glass or resin, and resin is mostly selected as the material of the lens due to the low price of the resin, but the resin has the following disadvantages: the heat resistance is low, and deformation is easy to generate, so that the focus is changed, and the picture becomes unclear, namely, thermal drift.
The lens barrel is also one of the reasons for influencing the image quality, the lens barrel wraps the lens, and the deformation resistance of the lens barrel also influences the position of the lens, thereby influencing the image quality. The material can be divided into metal and plastics, and the metal lens cone is heated evenly and the heat conductivity is good, and deformation is less, otherwise the plastic lens cone deformation is great, and different regions can produce the deformation of equidimension not to produce out of focus phenomenon.
Most of lenses are slightly displaced due to expansion with heat and contraction with cold, and the focal point of the lens can move, so that the original clear picture becomes blurred due to poor focusing.
At present, a heating device for heating a lens of a projection device only solves the problem of uneven temperature distribution of the lens caused by imaging, and fails to solve the problem of expansion with heat and contraction with cold of the lens caused by temperature change after the projection device is started.
Therefore, there is a need to design a new type of projection apparatus to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a projection device, which can solve the problem of lens thermal drift caused by the temperature change with time after the projection device is started, improve the imaging quality and stabilize the imaging so as to ensure that the user has good viewing effect.
In order to achieve the above object, the present invention provides a projection apparatus, comprising: the lens is arranged on the projection device; the heating mechanism is arranged on the lens and heats the lens; after the projection device is started, if the heating mechanism works, the heating mechanism heats the lens to enable the temperature of the lens to rise from the initial temperature to a first set temperature after a first time period; after the projection device is started, if the heating mechanism does not work, the temperature of the lens rises from the initial temperature to a second temperature after a second time period, and the second temperature is equal to the first set temperature; the first time period is less than the second time period.
Preferably, the device further comprises a second set temperature, a temperature sensing mechanism and a control mechanism, wherein the temperature sensing mechanism senses the temperature of the lens, the control mechanism is coupled to the temperature sensing mechanism and the heating mechanism respectively, the temperature of the lens is increased from the initial temperature to a first temperature after the first time period, when the temperature sensing mechanism senses that the first temperature is equal to the first set temperature, the control mechanism controls the heating mechanism to stop heating, and after a third time period, the temperature of the lens is reduced from the first temperature to a third temperature, when the temperature sensing mechanism senses that the third temperature is less than or equal to a second set temperature, the control mechanism controls the heating mechanism to heat the lens, and after a fourth time period, the temperature of the lens is increased from the third temperature to a fourth temperature.
Preferably, when the temperature sensing mechanism senses that the fourth temperature is equal to the first set temperature, the control mechanism controls the heating mechanism to stop heating the heating mechanism, after a fifth time period, the temperature of the lens is decreased from the fourth temperature to a fifth temperature, when the temperature sensing mechanism senses that the fifth temperature is less than or equal to the second set temperature, the control mechanism controls the heating mechanism to heat the lens, and after a sixth time period, the temperature of the lens is increased from the fifth temperature to the first set temperature.
Preferably, the heating mechanism is attached to the lens to support the lens.
Preferably, the projection apparatus further includes a supporting platform, the projection apparatus is disposed on the supporting platform, the projection apparatus further includes a top surface and a bottom surface, the bottom surface is opposite to the top surface, the bottom surface is close to the supporting platform, the top surface is far away from the supporting platform, the heating mechanism is disposed on the bottom surface, and the heating mechanism is attached to the lens to support the lens.
Preferably, the lens includes a lens barrel, and the heating mechanism is attached to the lens barrel to heat the lens barrel, so as to raise the temperature of the lens.
Preferably, the lens barrel further comprises a lens, the lens barrel has a first end and a second end, the first end is opposite to the second end, the lens is disposed at the first end, a distance between the heating mechanism and the first end is a first distance, a distance between the heating mechanism and the second end is a second distance, and the first distance is smaller than or equal to the second distance.
Preferably, the lens barrel has an outer side surface, the heating mechanism has a supporting surface, the supporting surface is matched with the outer side surface to make the supporting surface attached to the outer side surface, so that the supporting surface of the heating mechanism heats the outer side surface of the lens barrel to raise the temperature of the lens.
Preferably, the lens barrel has a first axial direction, the outer side surface surrounds the first axial direction, the supporting surface of the heating mechanism has a first length along a direction perpendicular to the first axial direction, the outer side surface of the lens barrel has a first circumference along a direction perpendicular to the first axial direction, and the first length is smaller than the first circumference.
Preferably, the heating mechanism includes a first heating plate and a second heating plate, and the first heating plate and the second heating plate are symmetrically attached to the outer side surface of the lens barrel.
Compared with the prior art, the projection device provided by the embodiment of the invention comprises a projection device body, a lens and a heating mechanism, wherein the lens is arranged on the projection device body, the heating mechanism is arranged on the lens, and the heating mechanism heats the lens; under the condition that the projection device is provided with the heating mechanism, after the projection device is started, the heating mechanism heats the lens, the temperature of the lens is increased to a first set temperature from an initial temperature after a first time period, and the first time period is smaller than a second time period, so that the lens is quickly heated to the set temperature.
Drawings
FIG. 1 is a schematic side view of an interior of a projection apparatus according to an embodiment of the invention;
FIG. 2 is a schematic temperature curve of a lens according to an embodiment of the invention;
fig. 3 is a schematic perspective view of a lens according to an embodiment of the invention;
FIG. 4 is a schematic front view of a lens barrel according to an embodiment of the invention;
fig. 5 is a schematic bottom view of a lens barrel according to an embodiment of the invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic side view of an interior of a projection apparatus according to an embodiment of the invention, and fig. 2 is a schematic temperature curve diagram of a lens according to an embodiment of the invention. In the projection apparatus 100 according to the embodiment of the present invention, the projection apparatus 100 includes a lens 1 and a heating mechanism 2, the lens 1 is disposed in the projection apparatus 100, the heating mechanism 2 is disposed in the lens 1, and the heating mechanism 2 heats the lens 1, wherein after the projection apparatus 100 is turned on, if the heating mechanism 2 works, the heating mechanism 2 heats the lens 1 to raise the temperature of the lens 1 from an initial temperature a0 to a first set temperature D1 after a first time period T1; after the projection apparatus 100 is turned on, if the heating mechanism 2 does not operate, the temperature of the lens 1 is increased from the initial temperature a0 to the second temperature a2 after the second time period T2, the second temperature a2 is equal to the first set temperature D1, and the first time period T1 is less than the second time period T2, so that the projection apparatus can be rapidly heated to the set temperature after the projection apparatus is turned on, the problem that the thermal drift of the lens 1 is caused by the change of the temperature of the projection apparatus 100 with time after the projection apparatus is turned on is solved, the imaging quality is improved, the imaging stability is improved, and the user viewing effect is good.
Next, the structure and positional relationship of the projection apparatus 100, the lens 1, and the heating mechanism 2 will be specifically described.
Referring to fig. 1, the projection apparatus 100 is disposed on the supporting platform 3, and the projection apparatus 100 includes a bottom surface 1001 and a top surface 1002, where the bottom surface 1001 is opposite to the top surface 1002, the bottom surface 1001 is close to the supporting platform 3, and the top surface 1002 is close to the supporting platform 3.
Referring to fig. 3, fig. 3 is a schematic perspective view of a lens barrel according to an embodiment of the invention. The lens 1 includes a lens barrel 11, the lens barrel 11 has a first axial direction 111 and an outer side surface 112, the outer side surface 112 surrounds the first axial direction 111, and the outer side surface 112 has a first circumference C1 along a direction perpendicular to the first axial direction 111. The lens barrel 11 further has a first end 113 and a second end 114, the first end 113 is opposite to the second end 114, and a connection direction of the first end 113 and the second end 114 is parallel or approximately parallel to the first axis 111. In the embodiment of the invention, the projection apparatus 100 generates heat when it is turned on, and the lens barrel 11 deforms due to heat absorption. Referring to fig. 3, the lens barrel 1 further includes a lens 12, and the lens 12 is disposed at the first end 113 of the lens barrel 11. In the embodiment of the invention, the projection apparatus 100 generates heat when it is turned on, and the lens 12 deforms due to heat absorption. Under the condition that the heating mechanism does not work, when the projection device 100 is started up for three minutes, the temperature of the lens 1 reaches about 35 ℃; when the projection apparatus 100 is turned on for thirty to sixty minutes, the temperature of the lens 1 reaches about 65 ℃.
Referring to fig. 3, the heating mechanism 2 has a third surface 21, the third surface 21 faces the lens barrel 11, and the third surface 21 has a first length L1 in a direction perpendicular to the first axial direction 111. The heating mechanism 2 is attached to the lens 1 so that the heating mechanism 2 heats the lens 1. The heating mechanism 2 is disposed on the bottom surface 1001, the heating mechanism 2 is disposed between the bottom surface 1001 and the lens barrel 11, and the heating mechanism 2 supports the lens barrel 11 to support the lens 1. The third surface 21 of the heating mechanism 2 is fitted to the outer surface 112 of the lens barrel 11 so that the third surface 21 is attached to the outer surface 112.
In the embodiment, the heating mechanism 2 includes a first heating plate 22 and a second heating plate 23, and the first heating plate 22 and the second heating plate 23 are symmetrically attached to the outer side surface 112 of the lens barrel 11. In practical implementation, the first heating plate 22 and the second heating plate 23 are arc-shaped metal plates, so that the temperature of the lens 1 can be rapidly raised to the first set temperature.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a front view of a lens barrel according to an embodiment of the invention. A first length L1 of the bottom surface 21 of the heating mechanism 2 in the direction perpendicular to the first axial direction 111, a first circumference C1 of the outer side surface 112 of the lens barrel 11 in the direction perpendicular to the first axial direction 111, and a first length L1 smaller than the first circumference C1. In specific implementation, the heating mechanism 2 surrounds the lens barrel 11 with the first axial direction 111 as an axis, and the heating mechanism 2 does not close and wrap the lens barrel 11, so that the material cost can be saved, and the effect of heating the lens 1 can be achieved.
Referring to fig. 5, fig. 5 is a schematic view illustrating a bottom view of a lens barrel according to an embodiment of the invention. The heating mechanism 2 is disposed at a first position B1 of the lens barrel 11, a distance between the first position B1 and the lens 12 is a first distance S1, a distance between the first position B1 and the second end 14 is a second distance S2, and the first distance S1 is less than or equal to the second distance S2. The heating mechanism 2 is close to the lens 12, and can effectively and efficiently heat the lens 1 quickly to raise the temperature of the lens 1 to the first set temperature.
Referring to fig. 3, the projection apparatus 100 further includes a temperature sensing mechanism 4 and a control mechanism 5, the temperature sensing mechanism 4 senses the temperature of the lens 1, and the control mechanism 5 is coupled to the temperature sensing mechanism 4 and the heating mechanism 2, respectively. The projection device 100 further comprises a second set temperature D2. Referring also to fig. 2, the heating mechanism 2 heats the lens 1, and after a first time period T1 elapses, the heating mechanism 2 raises the temperature of the lens 1 from the initial temperature a0 to the first temperature a 1. When the temperature sensing mechanism 4 senses that the first temperature a1 is equal to the first set temperature D1, the control mechanism 5 controls the heating mechanism 2 to stop heating the heating mechanism 2, after a second time period T2 elapses, the temperature of the lens 1 decreases from the first temperature a1 to the third temperature A3, when the temperature sensing mechanism 4 senses that the third temperature A3 is less than or equal to the second set temperature D2, the control mechanism 5 controls the heating mechanism 2 to heat the lens 1, and after a fourth time period T4 elapses, the temperature of the lens 1 increases from the third temperature A3 to the fourth temperature a 4. In specific implementation, the heating mechanism 2 heats the lens 1, and after three minutes, the heating mechanism 2 raises the temperature of the lens 1 from room temperature to 65 ℃; when the temperature sensing mechanism 4 senses that the temperature of the lens 1 at this time is 65 ℃, the control mechanism 5 controls the heating mechanism 2 to stop heating the heating mechanism 2; after a period of time, the temperature of the lens 1 is reduced to 60 ℃, the temperature sensing mechanism 4 senses the temperature of the lens 1 to be 60 ℃, the control mechanism 5 controls the heating mechanism 2 to enable the heating mechanism 2 to start heating, after a few minutes, the temperature of the lens 1 is from 60 ℃ to 65 ℃, and the heating mechanism 2 enables the temperature of the lens 1 to be maintained between 60 ℃ and 65 ℃ under the cooperation of the temperature sensing mechanism 4 and the control mechanism 5, so that the lens 1 is kept in a nearly constant temperature state, and the problem of thermal expansion and cold contraction caused by large temperature change of the lens 1 is solved. The specific temperature in this embodiment is for convenience of description and is not limited thereto.
In the embodiment of the invention, the heating mechanism 2 heats the lens 1, and after the first time period T1 elapses, the heating mechanism 2 raises the temperature of the lens 1 from the initial temperature a0 to the first temperature a 1. When the temperature sensing mechanism 4 senses that the first temperature a1 is equal to the first set temperature D1, the control mechanism 5 controls the heating mechanism 2 to stop heating the heating mechanism 2, after a third time period T3 elapses, the temperature of the lens 1 decreases from the first temperature a1 to the third temperature A3, when the temperature sensing mechanism 4 senses that the third temperature A3 is less than or equal to the second set temperature D2, the control mechanism 5 controls the heating mechanism 2 to heat the lens 1, and after a fourth time period T4 elapses, the temperature of the lens 1 increases from the third temperature A3 to the fourth temperature a 4. When the temperature sensing mechanism 4 senses that the fourth temperature a4 is equal to the first set temperature D1, the control mechanism 5 controls the heating mechanism 2 to stop heating the heating mechanism 2, after a fifth time period T5 elapses, the temperature of the lens 1 decreases from the fourth temperature a4 to the fifth temperature a5, when the temperature sensing mechanism 4 senses that the fifth temperature a5 is less than or equal to the second set temperature D2, the control mechanism 5 controls the heating mechanism 2 to heat the lens 1, and after a sixth time period T6 elapses, the temperature of the lens 1 increases from the fifth temperature a5 to the first set temperature D1. In specific implementation, the heating mechanism 2 heats the lens 1, and after three minutes, the heating mechanism 2 raises the temperature of the lens 1 from room temperature to 65 ℃; when the temperature sensing mechanism 4 senses that the temperature of the lens 1 at this time is 65 ℃, the control mechanism 5 controls the heating mechanism 2 to stop heating the heating mechanism 2; after a period of time, the temperature of the lens 1 is reduced to 60 ℃, the temperature sensing mechanism 4 senses the temperature of the lens 1 to be 60 ℃, the control mechanism 5 controls the heating mechanism 2 to enable the heating mechanism 2 to start heating, after a few minutes, the temperature of the lens 1 is from 60 ℃ to 65 ℃, the temperature sensing mechanism 4 senses that the temperature of the lens 1 is 65 ℃, and the control mechanism 5 controls the heating mechanism 2 to enable the heating mechanism 2 to stop heating; after a period of time, the temperature of the lens 1 starts to decrease from 65 ℃, and when the temperature sensing mechanism 4 senses that the temperature of the lens 1 at the moment is decreased to 60 ℃, the control mechanism 4 controls the heating mechanism 2 to enable the heating mechanism 2 to start heating the lens 1; after a few minutes, the temperature of the lens 1 is from 60 ℃ to 65 ℃, the heating mechanism 2 maintains the temperature of the lens 1 between 60 ℃ and 65 ℃ under the cooperation of the temperature sensing mechanism 4 and the control mechanism 5, so that the lens 1 is kept in a nearly constant temperature state, and the problem of thermal expansion and cold contraction caused by large-scale temperature change of the lens 1 is solved. The specific temperature in this embodiment is for convenience of description and is not limited thereto.
Referring to fig. 2, when the projection apparatus 100 is turned on, if the heating mechanism 2 is not operated, the temperature of the lens 1 is increased from the initial temperature a0 to a second temperature a2 after a second time period T2, wherein the second temperature a2 is equal to or close to the first set temperature D1; if the heating mechanism 2 works, the temperature of the lens 1 is rapidly increased from the initial temperature A0 to the first set temperature D1 after the first time period T1; the first period T1 is much smaller than the second period T6. In a specific implementation, when the projection apparatus 100 is turned on, and the heating mechanism 2 is not operated, the temperature of the lens 1 is raised from room temperature to about 35 ℃ after three minutes, and the temperature of the lens 1 is stabilized at about 65 ℃ after thirty minutes to sixty minutes. If the heating mechanism 2 heats the lens 1 while the heating mechanism 2 is operating, the temperature of the lens 1 is raised from room temperature to 65 ℃ over three minutes, thereby rapidly raising the temperature of the lens 1 to the first set temperature. The specific time and temperature in this embodiment are for convenience of description and are not limited thereto.
In summary, the projection apparatus provided by the present invention includes a lens and a heating mechanism, the lens is disposed on the projection apparatus, the heating mechanism is attached to the lens, the heating mechanism heats the lens, and after a first time period, the heating mechanism heats the lens from an initial temperature to a first set temperature. When the projection device is started, if the heating mechanism does not work, the temperature of the lens is from the initial temperature to a first set temperature after a second time period; if the heating mechanism works, the temperature of the lens is from the initial temperature to the first temperature after a first time period; the first time period is smaller than the second time period, so that the lens is quickly heated to the first set temperature from the initial temperature, the problem that the lens is quickly heated to the set temperature after the projection device is started can be solved, the problem that the lens is thermally drifted due to the fact that the temperature of the projection device changes along with time after the projection device is started is solved, the imaging quality is improved, imaging stability is improved, and the watching effect of a user is good.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention. The scale in the schematic drawings does not represent the scale of actual components for the sake of clarity in describing the required components.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (10)
1. A projection device, comprising:
the lens is arranged on the projection device; and
the heating mechanism is arranged on the lens and heats the lens;
after the projection device is started, if the heating mechanism works, the heating mechanism heats the lens to enable the temperature of the lens to rise from the initial temperature to a first set temperature after a first time period; after the projection device is started, if the heating mechanism does not work, the temperature of the lens rises from the initial temperature to a second temperature after a second time period, and the second temperature is equal to the first set temperature; the first time period is less than the second time period.
2. The projection apparatus according to claim 1, further comprising a second set temperature, a temperature sensing mechanism and a control mechanism, the temperature sensing mechanism senses the temperature of the lens, the control mechanism is respectively coupled with the temperature sensing mechanism and the heating mechanism, the temperature of the lens is increased from the initial temperature to a first temperature after the first time period, when the temperature sensing mechanism senses that the first temperature is equal to the first set temperature, the control mechanism controls the heating mechanism to stop heating, and after a third time period, the temperature of the lens is reduced from the first temperature to a third temperature, when the temperature sensing mechanism senses that the third temperature is less than or equal to a second set temperature, the control mechanism controls the heating mechanism to heat the lens, and after a fourth time period, the temperature of the lens is increased from the third temperature to a fourth temperature.
3. The projection apparatus according to claim 2, wherein the control mechanism controls the heating mechanism to stop heating when the temperature sensing mechanism senses that the fourth temperature is equal to the first predetermined temperature, the temperature of the lens decreases from the fourth temperature to a fifth temperature after a fifth time period, the control mechanism controls the heating mechanism to heat the lens when the temperature sensing mechanism senses that the fifth temperature is less than or equal to a second predetermined temperature, and the temperature of the lens increases from the fifth temperature to the first predetermined temperature after a sixth time period.
4. The projection apparatus as claimed in claim 1, wherein the heating mechanism is attached to the lens to support the lens.
5. The projection apparatus according to claim 4, further comprising a support platform, wherein the projection apparatus is disposed on the support platform, the projection apparatus further comprises a top surface and a bottom surface, the bottom surface is opposite to the top surface, the bottom surface is close to the support platform, the top surface is far away from the support platform, the heating mechanism is disposed on the bottom surface, and the heating mechanism is attached to the lens to support the lens.
6. The projection apparatus according to claim 1, wherein the lens barrel includes a heating mechanism attached to the lens barrel for heating the lens barrel by the heating mechanism to raise a temperature of the lens barrel.
7. The projection apparatus according to claim 6, further comprising a lens, wherein the lens barrel has a first end and a second end, the first end is opposite to the second end, the lens is disposed at the first end, a distance between the heating mechanism and the first end is a first distance, a distance between the heating mechanism and the second end is a second distance, and the first distance is smaller than or equal to the second distance.
8. The projection apparatus according to claim 6, wherein the lens barrel has an outer side surface, the heating mechanism has a supporting surface, the supporting surface is engaged with the outer side surface to attach the supporting surface to the outer side surface, and the supporting surface of the heating mechanism heats the outer side surface of the lens barrel to raise the temperature of the lens.
9. The projection apparatus according to claim 8, wherein the barrel has a first axial direction, the outer side surface surrounds the first axial direction, the supporting surface of the heating mechanism has a first length in a direction perpendicular to the first axial direction, the outer side surface of the barrel has a first circumference in a direction perpendicular to the first axial direction, and the first length is smaller than the first circumference.
10. The projection apparatus according to claim 8, wherein the heating mechanism includes a first heating plate and a second heating plate, and the first heating plate and the second heating plate are symmetrically attached to the outer side of the lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406339.0A CN113126396A (en) | 2019-12-31 | 2019-12-31 | Projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406339.0A CN113126396A (en) | 2019-12-31 | 2019-12-31 | Projection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113126396A true CN113126396A (en) | 2021-07-16 |
Family
ID=76768700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911406339.0A Pending CN113126396A (en) | 2019-12-31 | 2019-12-31 | Projection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113126396A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114143522A (en) * | 2021-11-30 | 2022-03-04 | 歌尔光学科技有限公司 | Temperature control method and device of projection equipment and projection equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5419757A (en) * | 1977-07-14 | 1979-02-14 | Olympus Optical Co Ltd | Lens prevented from being out of focus due to temperature change |
| TW200819903A (en) * | 2006-10-27 | 2008-05-01 | Hon Hai Prec Ind Co Ltd | Lens module |
| CN201947476U (en) * | 2010-11-11 | 2011-08-24 | 天津惠蓬船舶建造有限公司 | Pre-welding heating device for semicircular board of leg main chord pipe |
| US20140092483A1 (en) * | 2012-09-28 | 2014-04-03 | Coretronic Corporation | Projecing lens and optical engine |
| CN203763379U (en) * | 2014-02-21 | 2014-08-13 | 山东省文登整骨医院 | Orthopedic dressing change device |
| CN104267564A (en) * | 2014-09-22 | 2015-01-07 | 苏州佳世达光电有限公司 | Lens module and projection device |
| CN205123866U (en) * | 2015-11-24 | 2016-03-30 | 浙江大华技术股份有限公司 | Supervisory equipment's camera lens and supervisory equipment |
| CN106534631A (en) * | 2016-10-25 | 2017-03-22 | 合肥美的电冰箱有限公司 | Anti-condensation camera and refrigerator |
| CN208956178U (en) * | 2018-12-05 | 2019-06-07 | 信利光电股份有限公司 | A kind of camera lens |
| CN209198841U (en) * | 2019-01-10 | 2019-08-02 | 杭州海康威视数字技术股份有限公司 | A kind of monitoring device |
| CN209215846U (en) * | 2019-01-16 | 2019-08-06 | 中强光电股份有限公司 | Projector |
| CN110119012A (en) * | 2018-02-05 | 2019-08-13 | 深圳光峰科技股份有限公司 | Solar heat protection projection arrangement out of focus |
| CN110244502A (en) * | 2018-03-08 | 2019-09-17 | 光宝电子(广州)有限公司 | The image pick-up device of heating device and the application heating device |
-
2019
- 2019-12-31 CN CN201911406339.0A patent/CN113126396A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5419757A (en) * | 1977-07-14 | 1979-02-14 | Olympus Optical Co Ltd | Lens prevented from being out of focus due to temperature change |
| TW200819903A (en) * | 2006-10-27 | 2008-05-01 | Hon Hai Prec Ind Co Ltd | Lens module |
| CN201947476U (en) * | 2010-11-11 | 2011-08-24 | 天津惠蓬船舶建造有限公司 | Pre-welding heating device for semicircular board of leg main chord pipe |
| US20140092483A1 (en) * | 2012-09-28 | 2014-04-03 | Coretronic Corporation | Projecing lens and optical engine |
| CN203763379U (en) * | 2014-02-21 | 2014-08-13 | 山东省文登整骨医院 | Orthopedic dressing change device |
| CN104267564A (en) * | 2014-09-22 | 2015-01-07 | 苏州佳世达光电有限公司 | Lens module and projection device |
| CN205123866U (en) * | 2015-11-24 | 2016-03-30 | 浙江大华技术股份有限公司 | Supervisory equipment's camera lens and supervisory equipment |
| CN106534631A (en) * | 2016-10-25 | 2017-03-22 | 合肥美的电冰箱有限公司 | Anti-condensation camera and refrigerator |
| CN110119012A (en) * | 2018-02-05 | 2019-08-13 | 深圳光峰科技股份有限公司 | Solar heat protection projection arrangement out of focus |
| CN110244502A (en) * | 2018-03-08 | 2019-09-17 | 光宝电子(广州)有限公司 | The image pick-up device of heating device and the application heating device |
| CN208956178U (en) * | 2018-12-05 | 2019-06-07 | 信利光电股份有限公司 | A kind of camera lens |
| CN209198841U (en) * | 2019-01-10 | 2019-08-02 | 杭州海康威视数字技术股份有限公司 | A kind of monitoring device |
| CN209215846U (en) * | 2019-01-16 | 2019-08-06 | 中强光电股份有限公司 | Projector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114143522A (en) * | 2021-11-30 | 2022-03-04 | 歌尔光学科技有限公司 | Temperature control method and device of projection equipment and projection equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9028073B2 (en) | Projection apparatus | |
| US8000027B2 (en) | Drive device, lens barrel, image pickup apparatus, lens drive method and method of producing shape memory alloy | |
| JP2009258760A (en) | Camera lens-positioning device using shape memory alloy and camera using the same | |
| TWI229757B (en) | Lens assembly having automatic thermal focus adjustment | |
| CN112505876B (en) | Lens, image capturing device and electronic equipment | |
| US9131137B2 (en) | Lens module and speaker module | |
| CN101169505A (en) | Lens module | |
| CN106199900B (en) | A kind of combination mirror holder with hot focusing function | |
| CN104006357A (en) | Backlight module, liquid crystal display device and OLED display device | |
| CN113126396A (en) | Projection device | |
| JP2011170161A (en) | Lens device | |
| CN104006358A (en) | Curvature-adjustable backboard and application thereof | |
| TW405053B (en) | Optical apparatus having temperature compensating function | |
| JP2006048013A (en) | Projector optical device | |
| US20200004104A1 (en) | Liquid lens | |
| JP2011209394A (en) | Projector and focus adjustment method | |
| CN114355562B (en) | Zoom projection lens and electronic equipment | |
| TW440709B (en) | Mechanically simplified, high resolution, optical focusing and steering apparatus | |
| CN103592813A (en) | Large-screen back-projection straight-projection type ultrashort-distance imaging display device | |
| JP2014112156A (en) | Lens unit, and imaging device | |
| JP2006330321A (en) | Lens system and optical device | |
| CN106946441B (en) | A kind of optical aspherical surface glass compression molding device | |
| TWI287642B (en) | Flexible zooming lens | |
| CN219657992U (en) | High Wen Duijiao device of camera lens | |
| JPH0534815A (en) | Projector device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210716 |