CN107587318B - Laser projection display system for washing machine - Google Patents
Laser projection display system for washing machine Download PDFInfo
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- CN107587318B CN107587318B CN201610534133.6A CN201610534133A CN107587318B CN 107587318 B CN107587318 B CN 107587318B CN 201610534133 A CN201610534133 A CN 201610534133A CN 107587318 B CN107587318 B CN 107587318B
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Abstract
The invention provides a laser projection display system for a washing machine, which comprises a transparent display panel, a semi-transparent semi-reflecting mirror, a laser emission component, a polarization component and a Dammann grating, wherein the semi-transparent semi-reflecting mirror is positioned at the rear side of the transparent display panel and is arranged opposite to the transparent display panel, the laser emission component, the polarization component and the Dammann grating are arranged between the transparent display panel and the semi-transparent semi-reflecting mirror, and laser emitted by the laser emission component sequentially passes through the polarization component and the Dammann grating and then is projected to the transparent display panel through the semi-transparent semi-reflecting mirror. The laser projection display system has clear imaging, improves the display effect and improves the user experience through the brightness adjustment of the laser and the dynamic change of the pattern.
Description
Technical Field
The invention relates to the technical field of washing machine display, in particular to a laser projection display system for a washing machine.
Background
The drum washing machine is well received by the market due to the advantages of small damage to clothes, difficult winding and the like. The current drum type washing machine has the transparent window that is used for observing the clothing washing situation more, just the transparent window is opened on the door body in washing machine the place ahead more, the transparent window decides washing machine's whole outward appearance at to a great extent, more influences consumer and uses the experience.
Chinese patent CN 101694052 a discloses a drum washing machine with a light guide plate, which is easily identified in a long distance by a plurality of colors by additionally installing a light guide plate with an illumination function in front of a door body, and which displays the driving state of the washing machine according to different strokes by the light guide plate capable of displaying the plurality of colors, thereby increasing the aesthetic feeling. But the light is directly irradiated forwards, which influences the observation of the user on the state of the clothes in the washing machine; in addition, although the conventional LED light source can produce halo display effects of various colors, it is difficult to perform clear or regular pattern display.
In view of the above, there is a need for a new laser projection display system for a washing machine.
Disclosure of Invention
The invention aims to provide a laser projection display system for a washing machine, which has clear imaging, can realize dynamic change of patterns, improves the display effect and improves the user experience.
In order to achieve the above object, the present invention provides a laser projection display system for a washing machine, which includes a transparent display panel, a half mirror located at the rear side of the transparent display panel and opposite to the transparent display panel, and a laser emitting assembly, a polarizing assembly and a dammann grating arranged between the transparent display panel and the half mirror, wherein laser emitted by the laser emitting assembly passes through the polarizing assembly and the dammann grating in sequence and then is projected to the transparent display panel through the half mirror.
As a further improvement of the invention, the polarization component comprises a polarizer which is rotatably arranged around the laser emergent direction and an analyzer which is vertically arranged along the front-back direction.
As a further improvement of the present invention, the laser emitting assembly comprises at least two independent lasers, at least two of the lasers emitting laser light of different wavelengths.
As a further improvement of the present invention, the laser projection display system further includes a beam splitter group for converging the laser light emitted by at least two of the lasers into a same beam.
As a further improvement of the invention, the exit end of each laser is correspondingly provided with the polarizer, and the polarizer is arranged between the laser and the spectroscope group along the vertical laser exit direction; the analyzer is arranged between the beam splitter group and the Dammann grating.
As a further improvement of the invention, the beam splitter group comprises a plurality of prisms, the prisms are mutually glued into a whole, and the working interfaces of the prisms are coated with functional films.
As a further improvement of the present invention, the lasers are set to 3 and are used to emit red, green and blue laser light, respectively.
As a further improvement of the present invention, the laser projection display system further includes a projection lens group vertically disposed between the dammann grating and the half mirror along the front-back direction.
As a further improvement of the present invention, the projection lens group includes 6 projection objectives arranged in series.
As a further improvement of the invention, the Dammann grating is circular and can rotate around the axis of the Dammann grating to realize dynamic change of the projection pattern.
The invention has the beneficial effects that: by adopting the laser projection display system, the laser emitted by the laser emitting component realizes the change of light and shade intensity through the polarization component, and then forms a lattice pattern through the Dammann grating and is reflected to the transparent display panel by the semi-transparent semi-reflector. Compared with the prior art, the dynamic change of the patterns can be realized, the imaging is clear, the display effect is improved, and the user experience is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a laser projection display system according to the present invention;
FIG. 2 is a schematic view of a laser projection display system of the present invention;
FIG. 3 is a schematic diagram illustrating the effect of the laser projection display system according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.
Fig. 1 is a schematic diagram of the overall structure of the laser projection display system according to the present invention. The laser projection display system comprises a transparent display panel 1, a semi-transparent semi-reflecting mirror 2 which is positioned at the rear side of the transparent display panel 1 and is opposite to the transparent display panel 1, and a laser emission assembly, a polarization assembly and a Dammann grating 3 which are arranged between the transparent display panel 1 and the semi-transparent semi-reflecting mirror 2, wherein laser emitted by the laser emission assembly sequentially passes through the polarization assembly and the Dammann grating 3 and then is projected to the transparent display panel 1 through the semi-transparent semi-reflecting mirror 2. The Dammann grating 3 is circular and can rotate around the axis to realize dynamic change of the projection pattern.
In order to obtain a more colorful display effect, the laser emitting assembly comprises at least two independent lasers, and the at least two lasers emit laser with different wavelengths. Correspondingly, the laser projection display system further comprises a beam splitter group 6 for converging the laser light emitted by at least two of the lasers into a same beam. The beam splitter group 6 comprises a plurality of prisms which are mutually glued into a whole, and the working interfaces of the prisms are coated with functional films.
In the present embodiment, the laser emitting component includes a first laser 41 emitting 635nm red light, a second laser 42 emitting 532nm green light, and a third laser 43 emitting 405nm blue light, which are independent of each other. The polarization component comprises a first polarizer 51, a second polarizer 52 and a third polarizer 53 which are respectively arranged at the emitting ends of the first laser 41, the second laser 42 and the third laser 43. The first polarizer 51, the second polarizer 52 and the third polarizer 53 are rotatably disposed between the first laser 41, the second laser 42 and the third laser 43 and the beam splitter group 6 respectively along a direction perpendicular to the emitting direction of the laser light emitted by the first laser 41, the second laser 42 and the third laser 43. The polarization component is further provided with a stepping motor for driving the first polarizer 51, the second polarizer 52 and the third polarizer 53 to rotate respectively, and an analyzer 54 vertically arranged between the Dammann grating 3 and the beam splitter group 6 along the front-back direction. The first polarizer 51, the second polarizer 52 and the third polarizer 53 are matched with the analyzer 54 to realize continuous modulation of the light intensity of the laser with various colors and change the display color and brightness of the laser.
The first laser 41 and the third laser 43 are arranged in parallel in front and at the back, and the laser emitted by the first laser 41 and the laser emitted by the third laser vertically enter the spectroscope assembly 6 downwards; the second laser 42 is disposed below the spectroscope assembly 6. The beam splitting mirror group comprises a 45-degree right-angle prism and two beam splitting cubic prisms, and the working interface of the 45-degree right-angle prism is coated with an enhanced aluminum reflector film so as to reflect the red light emitted by the first laser 41 backwards; the working interface of one of the light-splitting cubic prisms is coated with a light-splitting film which is high in transmittance and high in reflection at 635nm and 532 nm; and a working interface of the other light-splitting cubic prism is coated with a long-wave-pass filter film, so that the light-splitting cubic prism has high reflection on 405nm blue light and high transmission on 532nm green light and 635nm red light. The 45-degree right-angle prism and the light splitting cubic prism are glued and combined into a whole by using photosensitive adhesive so as to converge the lasers emitted by the 3 lasers with different colors to the same light path.
The dammann grating 3 is arranged at the position 50mm away from the rear side of the emergent plane where the transparent display panel 1 is arranged, and the parameters of the dammann grating 3 formulated in the embodiment are as shown in the following table:
the laser beam emitted backward from the analyzer 54 is split by the dammann grating 3 into array sub-beams, and the divergence angle of the array gaussian beam diffracted by the dammann grating 3 needs to be compressed because the divergence angle is large. In this embodiment, the laser projection display system further includes a projection lens group 7 vertically disposed between the dammann grating 3 and the half mirror 2 along the front-back direction. The projection mirror group 7 is used for clearly projecting the diffraction pattern formed by the dammann grating 3 onto the transparent display panel 1 through the half mirror 2, i.e. accurately imaging the diffraction object plane of the dammann grating 3 onto the front cover of the washing machine. The projection lens group 7 comprises 6 projection objective lenses which are sequentially arranged in front and back.
In summary, with the laser projection display system of the present invention, the laser emitted by the laser emitting component realizes the light intensity change through the polarization component, and then forms the lattice pattern through the dammann grating 3, and then is reflected by the half mirror 2 to the transparent display panel 1. Compared with the prior art, the dynamic change of the patterns can be realized, the imaging is clear, the display effect is improved, and the user experience is improved.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. A laser projection display system for a washing machine, characterized by: the laser projection display system comprises a transparent display panel, a semi-transparent semi-reflecting mirror which is positioned at the rear side of the transparent display panel and is arranged opposite to the transparent display panel, and a laser emission assembly, a polarization assembly and a Dammann grating which are arranged between the transparent display panel and the semi-transparent semi-reflecting mirror, wherein laser emitted by the laser emission assembly passes through the polarization assembly and the Dammann grating in sequence and then is projected to the transparent display panel through the semi-transparent semi-reflecting mirror; the laser emission assembly comprises at least two independent lasers, at least two lasers emit lasers with different wavelengths, the polarization assembly comprises a polarizer and a polarization analyzer, the polarizer is rotatably arranged around the laser emission direction, the polarization analyzer is vertically arranged along the front and back directions, the laser projection display system further comprises a beam splitting mirror group used for collecting the lasers emitted by the at least two lasers into a same beam, the exit end of each laser is correspondingly provided with the polarizer, the polarizer is arranged between the laser and the beam splitting mirror group along the vertical laser emission direction, and the polarization analyzer is arranged between the beam splitting mirror group and the Dammann grating.
2. The laser projection display system of claim 1, wherein: the light splitting mirror group comprises a plurality of prisms, the prisms are mutually glued to form a whole, and the working interfaces of the prisms are coated with functional films.
3. The laser projection display system of claim 1, wherein: the lasers are set to be 3 and used for emitting red, green and blue laser light respectively.
4. The laser projection display system of claim 1, wherein: the laser projection display system also comprises a projection mirror group vertically arranged between the Dammann grating and the semi-transparent semi-reflective mirror along the front-back direction.
5. The laser projection display system of claim 4, wherein: the projection lens group comprises 6 projection objective lenses which are sequentially arranged in front and back.
6. The laser projection display system of claim 1, wherein: the Dammann grating is circular and can rotate around the axis of the Dammann grating to realize dynamic change of the projection pattern.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610534133.6A CN107587318B (en) | 2016-07-07 | 2016-07-07 | Laser projection display system for washing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610534133.6A CN107587318B (en) | 2016-07-07 | 2016-07-07 | Laser projection display system for washing machine |
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| CN107587318A CN107587318A (en) | 2018-01-16 |
| CN107587318B true CN107587318B (en) | 2020-02-21 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408930B (en) * | 2018-02-02 | 2020-09-15 | 中山市柠檬环境科技有限公司 | Laser projection display water purifier |
| CN108249606A (en) * | 2018-03-02 | 2018-07-06 | 中山市柠檬环境科技有限公司 | Laser projection shows twin-lock water not pressure-bearing water purifier |
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| JPH09196620A (en) * | 1996-01-12 | 1997-07-31 | Yaskawa Electric Corp | Reflection type optical displacement detector |
| CN1979332A (en) * | 2005-12-06 | 2007-06-13 | 三星电子株式会社 | Projection system and method for reducing optical noise in projection system |
| CN101454716A (en) * | 2006-05-26 | 2009-06-10 | 索尼株式会社 | Reflection type liquid crystal projector and image reproducing apparatus |
| CN102036042A (en) * | 2009-09-28 | 2011-04-27 | 南阳首控光电有限公司 | Laser television |
| CN102096293A (en) * | 2011-01-30 | 2011-06-15 | 河南科技大学 | Optical engine for three-piece liquid crystal on silicon (LCOS) laser projection display |
| US8723934B2 (en) * | 2011-06-27 | 2014-05-13 | General Electric Company | Projected user interface onto the surface of an appliance |
| CN103852897A (en) * | 2014-03-20 | 2014-06-11 | 浙江晶景光电有限公司 | Micro optical engine system based on reuse of polarized light |
| CN103955064A (en) * | 2014-04-17 | 2014-07-30 | 长沙中科院文化创意与科技产业研究院 | Device and method for projecting multi-light-spot image |
-
2016
- 2016-07-07 CN CN201610534133.6A patent/CN107587318B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09196620A (en) * | 1996-01-12 | 1997-07-31 | Yaskawa Electric Corp | Reflection type optical displacement detector |
| CN1979332A (en) * | 2005-12-06 | 2007-06-13 | 三星电子株式会社 | Projection system and method for reducing optical noise in projection system |
| CN101454716A (en) * | 2006-05-26 | 2009-06-10 | 索尼株式会社 | Reflection type liquid crystal projector and image reproducing apparatus |
| CN102036042A (en) * | 2009-09-28 | 2011-04-27 | 南阳首控光电有限公司 | Laser television |
| CN102096293A (en) * | 2011-01-30 | 2011-06-15 | 河南科技大学 | Optical engine for three-piece liquid crystal on silicon (LCOS) laser projection display |
| US8723934B2 (en) * | 2011-06-27 | 2014-05-13 | General Electric Company | Projected user interface onto the surface of an appliance |
| CN103852897A (en) * | 2014-03-20 | 2014-06-11 | 浙江晶景光电有限公司 | Micro optical engine system based on reuse of polarized light |
| CN103955064A (en) * | 2014-04-17 | 2014-07-30 | 长沙中科院文化创意与科技产业研究院 | Device and method for projecting multi-light-spot image |
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| CN107587318A (en) | 2018-01-16 |
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Effective date of registration: 20201109 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIGAO DESIGN & MANUFACTURING Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIGAO DESIGN & MANUFACTURING Co.,Ltd. |