CN108267909B - Micro array flash lamp of light-emitting diode - Google Patents
Micro array flash lamp of light-emitting diode Download PDFInfo
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- CN108267909B CN108267909B CN201611264396.6A CN201611264396A CN108267909B CN 108267909 B CN108267909 B CN 108267909B CN 201611264396 A CN201611264396 A CN 201611264396A CN 108267909 B CN108267909 B CN 108267909B
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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
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
Abstract
The invention discloses a micro-array flash lamp of a light-emitting diode, which is applied to a mobile phone to generate an adjustable illumination light source or project an image. The micro light emitting diode array module is arranged in the mobile phone shell and used for generating a patterned image light source. The light mixing optical module and the optical module are detachably arranged on the outer surface of the shell of the mobile phone and are used for receiving the image light source emitted by the micro light-emitting diode array module and respectively irradiating the image light source or projecting the image light source into an image. The invention utilizes the light emitting diode array chip to combine with the external light mixing optical module to generate the flash lamp capable of adjusting the light type and the color, and the light mixing optical module is replaced by the optical module to project the image light source into an image, so that the mobile phone has the projection function.
Description
Technical Field
The present invention relates to a flash lamp, and more particularly, to a light emitting diode micro array flash lamp applied to a smart phone and using a micro light emitting diode array module.
Background
With the change of life style, the situation of using a mobile phone as a shooting and recording device is more and more popular, and due to the convenient carrying characteristic of the mobile phone, people can record scenery, portrait and seen scenes anytime and anywhere. However, with the increase of popularity, the requirements of various situation performance characteristics according to each shooting environment and the display requirements are also increased.
Although various kinds of situation expressions can be realized by using subsequent cropping software to modify the images or films to be shot, the method of obtaining the pictures to be expressed in the post-production mode often needs to be adjusted by human details one by one, which is a great challenge to the consumption of time and energy. Meanwhile, because the image is presented by an unnatural image, the inconsistent appearance of the image is easy to generate. Moreover, it is a considerable effort and expense to match the corresponding software development and maintenance.
Therefore, if the light source of the fill-in light can be directly used as a method for improving the shooting and the subsequent imaging, the post-processing procedure can be omitted. The LED light supplement lamp of the existing smart phone is a single light source, and cannot adjust warm color light or cold color light according to the requirements of a shooting environment, so that the condition that manual modification is required to be performed through image modification software in the follow-up process is caused. Although some existing smart phones have developed a modulation function of a bi-color light source to complement color temperature for the fill-in light, under the circumstance that a special light source is required, for example: the self-timer apple light or the deep green light for making the fear effect, and even more, the strong and weak light sources at different positions are matched for further highlighting the theme, or the double halo effect required by a special situation can not be easily realized.
On the other hand, the smart phone is becoming popular as a digital medium for audio-visual entertainment and office discussions, however, because the smart phone is small in size, if a user wants to view the smart phone by many people, the user simply passes through the display screen of the smart phone, which is insufficient, and therefore a projection technology is required to generate a larger image presentation.
The existing projector module utilizes elements such as a backlight plate, an optical filter and the like to generate a required image, and if the same technology is used on a mobile phone to enable the mobile phone to directly project, the heat dissipation problem is highlighted due to the small volume of the mobile phone, and the power required by the general projector module is too large for the mobile phone, so that the projection function on the mobile phone is not convenient to realize.
Therefore, there are many defects in the prior art, and the prior art is not a good design, so it is desired to improve the prior art. In view of the above, the present invention provides a light emitting diode micro-array flash lamp for a mobile phone to satisfy the requirement of a flash lamp with light color and light shape adjustment, and a projection image can be directly generated by the self-luminous property of the light emitting diode micro-array element and the externally-mounted optical module.
Disclosure of Invention
One embodiment of the present invention provides a light emitting diode micro-array flash lamp. According to an embodiment of the present invention, the led micro-array flash lamp of the present invention is applied to a mobile phone to illuminate a multi-spot array light mixing source, and includes a micro-led array module and a light mixing optical module. The micro light emitting diode array module is arranged in the shell of the mobile phone and used for generating a patterned image light source. The light mixing optical module is detachably arranged on the outer surface of the shell of the mobile phone and used for receiving the image light source and then irradiating the multi-point array light mixing light source. The thickness of the micro light-emitting diode array module is smaller than the average thickness of the mobile phone, and the multi-point array light mixing light source can be used as a photographic light source and an illumination light source of the mobile phone.
The light-emitting diode micro array flash lamp also comprises an optical module, when the light-mixing optical module is disassembled on the outer surface of the shell of the mobile phone, the optical module is detachably arranged on the outer surface of the shell of the mobile phone and is used for receiving the image light source emitted by the micro light-emitting diode array module and projecting the image light source into an image.
The micro light-emitting diode array module comprises a light-emitting diode array chip of a plurality of micro light-emitting diode elements, and the micro light-emitting diode array module generates an image light source through the micro light-emitting diode elements.
The micro light emitting diode array module further comprises a micro lens corresponding to each micro light emitting diode element, and the micro light emitting diode elements generate image light sources through the micro lenses.
Furthermore, each of the micro light emitting diode elements belongs to one of a red light emitting diode, a green light emitting diode and a blue light emitting diode.
Furthermore, at least one red light emitting diode, at least one green light emitting diode and at least one blue light emitting diode in the micro light emitting diode element form a pixel group, and light emitted by the micro light emitting diode element in the pixel group is mixed to generate a pixel in the patterned image light source.
In addition, the micro light-emitting diode array module further comprises a substrate, and the micro light-emitting diode element is manufactured by directly attaching an epitaxial structure on the substrate.
The substrate is a complementary metal oxide semiconductor integrated circuit (CMOS IC).
In one embodiment, the thickness of the micro led array module is not greater than 1 mm.
The optical module adjusts the focal length position, size and display shape of the image to perform projection.
In summary, the micro led array flash lamp of the present invention generates a flash lamp light source with adjustable light color and light type by the micro led array module installed in the casing of the mobile phone and the externally-mounted light-mixing optical module, and further generates a projection image by replacing the light-mixing optical module with the detachable optical module. Compared with the prior art, the light-emitting diode micro array flash lamp provided by the invention directly emits the required image light source by using the light-emitting diode array chip, and generates the flash lamp light source capable of adjusting light color and light type by matching the light-mixing optical module, thereby reducing the thickness and the volume required by embedding in a mobile phone. In addition, the light mixing optical module can be replaced by the optical module to project the patterned light source into a viewable image, so that the mobile phone with the projection function is upgraded.
The advantages and spirit of the present invention can be further understood by the following detailed description of the invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a light emitting diode micro array flash lamp according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a conventional mobile phone with a two-color flash light source.
Fig. 3 is a schematic diagram of an embodiment of a micro led array module according to the present invention.
Fig. 4 is a schematic diagram of a conventional mobile phone with a projection function.
FIG. 5 is a schematic diagram of an optical module for use with a micro-array flash of LEDs according to an embodiment of the invention
Description of reference numerals:
1: micro array flash lamp of light-emitting diode
12: micro light emitting diode array module
122: micro light-emitting diode element
124: substrate
126: micro-array lens
128: flat cable
14: optical module
16: light mixing optical module
22: mobile phone casing
221: light outlet
3: mobile phone with projection function
31: flash lamp
32: camera with a camera module
33: projection light outlet
4: mobile phone with double-color flash lamp light source
41: flash lamp
42: camera with a camera module
Detailed Description
Referring to fig. 1, fig. 1 is a schematic diagram of a light emitting diode micro array flash lamp 1 according to an embodiment of the invention. According to an embodiment of the present invention, the led micro-array flash 1 of the present invention can be applied to a mobile phone to illuminate a multi-spot array light mixing source, which includes a micro-led array module 12 and a light mixing optical module 16. The micro led array module 12 is disposed in the housing 22 of the mobile phone for generating a patterned image light source. The light mixing optical module 16 is detachably disposed on an outer surface of the housing 22 of the mobile phone for receiving the image light source and then irradiating the multi-point array light mixing source. The thickness of the micro light emitting diode array module 12 is smaller than the average thickness of the mobile phone, and the multi-point array light mixing light source can be used as a camera light source and an illumination light source of the mobile phone.
In practical application, the multi-point array light mixing source can be regulated and controlled by a control module of the mobile phone to be used as a flash lamp of the mobile phone, and further can be used as an illumination light source of the mobile phone.
The micro led array module 12 includes a plurality of led array chips of micro led elements 122, and the micro led elements 122 generate a patterned image light source.
In practical applications, the micro led array module 12 can generate an image light source without using any filtering or shading element, so that the thickness of the micro led array module 12 can be reduced.
Each of the micro led elements 122 is one of a red led, a green led and a blue led. In practical applications, the color of the light emitted from each of the micro led elements 122 can also be other basic primary colors capable of mixing the required visible light.
In practical applications, the micro led device 122 of one color may be used with corresponding fluorescent powder to obtain a light source of another color, such as: the white light source is obtained by using the blue light emitting diode and the yellow fluorescent powder.
Furthermore, at least one red led, at least one green led, and at least one blue led in the micro led elements 122 form a pixel group, and light emitted from the micro led elements 122 in the pixel group can be mixed to generate a pixel in the patterned image light source. In practical applications, the micro led elements 122 of the micro led array module 12 can be divided into a plurality of pixel groups according to the grouping principle, and the pixel groups correspond to each pixel of the image light source, so that each pixel group can directly generate each pixel of the image light source without a backlight plate, a filter or other elements, thereby reducing the usage amount of the elements and further reducing the usage volume of the micro led array module 12 in the mobile phone.
On the other hand, the micro led array module 12 directly emits three colors of light through the micro led elements 122, so that the colors are purer and the response time of the pixels is shortened.
Referring to fig. 2, fig. 2 is a schematic diagram of a conventional mobile phone 4 with a two-color flash light source. In order to overcome the color temperature light source required by different photographing environments, the conventional mobile phone 4 with a two-color flash light source is configured with two flash lights 41 with different color temperatures to realize a color temperature modulation function. Although the modulation of the cold and warm light colors can be generated by this method, the color variability is limited because the adjustment is only performed by the light sources of two colors. Compared with the prior art, the light emitting diode micro array flash lamp 1 of the present invention can modulate the light source required for shooting by the modulation method of the three color lights, such as: the color temperature of the white light can be freely modulated to obtain warm white light or cold white light, or the color of the white light can be modulated to generate apple light suitable for face photographing, dark green light suitable for a dark situation, yellow green light suitable for vegetable and fruit photographing, and the like.
Furthermore, since the micro led array module 12 is composed of a plurality of pixel groups, the generated light source can be an intense light source for emphasizing a specific position of the main body, a double-light halo light source like car lights, or a gradient composite light source such as white top and red bottom, which cannot be easily realized in the existing smart phone with only two-color point light sources.
Referring to fig. 3, fig. 3 is a schematic diagram of an embodiment of a micro led array module 12 according to the present invention. The micro led array module 12 further includes a substrate 124, and the micro led elements 122 are formed by directly attaching an epitaxial structure to the substrate 124 and then fabricating the epitaxial structure to form a led array chip. The substrate 124 may be a complementary metal oxide semiconductor integrated circuit (CMOS IC) and the flex cable 128 of the substrate 124 may be embedded in a corresponding control socket to reduce assembly complexity. Meanwhile, a micro-array lens 126 may be further provided, and the optical properties of the micro-led elements 122 are adjusted by matching the position of each micro-led element 122, so that the collimation of the light emitted by each micro-led element 122 can be improved by the micro-array lens 126, thereby generating a clearer image light source. The micro-array lens 126 can be directly formed on the corresponding micro-led device 122 by a simple process, thereby reducing the number of process steps and the thickness of the micro-array lens 126 and improving the matching accuracy of each micro-led device 122 with respect to the micro-array lens 126. Finally, the image light source with collimation is converted into a multi-point array light mixing source with soft light effect by the light mixing optical module 16.
Because of the form of the light emitting diode array chip, the volume of the micro light emitting diode array module 12 can be made smaller, and because the epitaxial structure of the micro light emitting diode element 122 is directly formed by an epitaxial process, the processes required by the process can be reduced, the arrangement accuracy of the micro light emitting diode element 122 can be improved, and the selection conditions of the mutual distance and the arrangement form of the micro light emitting diode element 122 are more abundant.
In addition, since the micro led epitaxial structure is directly bonded to the substrate 124 by using an epitaxial process to manufacture the micro led element 122, the thermal resistance of the whole micro led array module 12 can be effectively reduced, so as to increase the heat dissipation and heat dissipation capability of the micro led element 122.
On the other hand, since the micro led device 122 is fixed on the substrate 124 without using tack welding, the life of the micro led device 122 is not reduced or the micro led device is not failed due to the tack welding process.
In summary, the thickness of the micro led array module 12 used can be no greater than the average thickness of the housing 22 of the handset (e.g., no greater than 1 mm) to be functionally desirable. Therefore, the housing 22 of the mobile phone does not need to be modified to accommodate the led array module 12, so as to cause the projection of the housing, and the waste of the volume in the mobile phone housing 22 can be avoided.
Referring to fig. 1 and 5, fig. 5 is a schematic diagram illustrating an optical module 14 of a light emitting diode micro array flash 1 according to an embodiment of the invention. The led micro array flash 1 further comprises an optical module 14, and when the light mixing optical module 16 is detached from the outer surface of the casing 22 of the mobile phone, the optical module 14 is detachably disposed on the outer surface of the casing 22 of the mobile phone for receiving the image light source emitted by the micro led array module 12 and projecting the image light source into an image. In practical applications, the optical module 14 can be mounted on the mobile phone housing 22 by a mounting method.
In practical applications, the outer surface of the housing 22 of the mobile phone has corresponding grooves, so that the optical module 14 and the light mixing optical module 16 can be fixed on the mobile phone housing 22 by sliding into the grooves, thereby reducing the difficulty of replacement and improving the position accuracy of the optical module 14 and the light mixing optical module 16 relative to the micro led array module 12.
In addition, the housing 22 of the mobile phone has a light outlet 221, and the micro led array module 12 is disposed in the mobile phone at a position corresponding to the light outlet 221, so that the generated image light source can pass through the light outlet 221 to the optical module 14 or the light mixing optical module 16.
Referring to fig. 4, fig. 4 is a schematic diagram of a conventional mobile phone 3 with a projection function. Since the existing projection module cannot be too thin, the projection light outlet 33 of the existing mobile phone 3 with projection function cannot be located on the same side of the camera 32, which would require an additional flash 31 to make up for the requirement of taking a picture. As known from another prior art, taiwan patent I327018, if the projection light outlet 33 and the camera 32 are located on the same side for use, the thickness of the mobile phone is sufficient to accommodate various optical lenses, light sources and filters, and the mobile phone cannot be made thinner.
Compared with the prior art, the thickness of the micro light-emitting diode array module 12 of the light-emitting diode micro array flash lamp 1 is smaller than the average thickness of the mobile phone, and the optical module 14 and the light mixing optical module 16 can be detached when not in use, so that the mobile phone can keep the appearance of the original design at ordinary times, and the mobile phone does not feel obtrusive in visual perception and structural shape.
When the optical module 14 projects the image light source into an image, the focal length, size and display shape of the image can be adjusted to perform projection. In one embodiment, the optical module 14 can be divided into a plurality of different types of optical modules 14 according to the focusing distance, and the micro led array module 12 can be matched in an optional manner, for example, the optical module 14 can be divided into a short focusing module with a distance of about 15 cm and a long focusing module with a distance of about 2 m, so as to match different usage environments. In another embodiment, an auto-focusing device may be built in the optical module 14 to perform an optimal focal length adjustment for the projected image, so that only one optical module 14 is needed to achieve the projection function under different environments. In practical applications, the optical module 14 may further include functions of image brightness modulation and color shift adjustment, so as to project a clearer projection image on different background screens.
In summary, the micro led array flash lamp of the present invention generates the flash lamp light source with adjustable light color and light type by the micro led array module installed in the casing of the mobile phone and the externally-mounted light mixing optical module, and can further generate the projection image by replacing the light mixing optical module with the detachable optical module. Compared with the prior art, the light-emitting diode micro array flash lamp provided by the invention directly emits the required image light source by using the light-emitting diode array chip, and generates the flash lamp light source capable of adjusting light color and light type by matching the light-mixing optical module, thereby reducing the thickness and the volume required by embedding in a mobile phone. In addition, the light mixing optical module can be replaced by the optical module to project the patterned light source into a viewable image, so that the mobile phone with the projection function is upgraded.
The above detailed description of the preferred embodiments is intended to more clearly illustrate the features and spirit of the present invention, and is not intended to limit the invention. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the embodiments of the invention claimed herein. Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (9)
1. A kind of micro-array flash lamp of light-emitting diode, apply to a mobile phone in order to shine out a multi-spot array mixed light source, it includes:
a micro light emitting diode array module arranged in a shell of the mobile phone and used for generating a patterned image light source with a plurality of pixels; and
the light mixing optical module is detachably arranged on the outer surface of the shell of the mobile phone and is used for receiving the image light source and then irradiating the multi-point array light mixing light source;
the thickness of the micro light-emitting diode array module is smaller than the average thickness of the mobile phone, and the multi-point array light mixing light source can be used as an imaging light source and an illumination light source of the mobile phone;
when the light mixing optical module is disassembled from the outer surface of the shell of the mobile phone, the optical module is detachably arranged on the outer surface of the shell of the mobile phone and is used for receiving the image light source emitted by the micro light emitting diode array module and projecting the image light source into an image.
2. The led micro array flash of claim 1, wherein the micro led array module comprises an led array chip having a plurality of micro led elements, the micro led array module generating the image light source through the micro led elements.
3. The LED micro-array flash of claim 2, wherein the micro-LED array module comprises a micro-array lens corresponding to each micro-LED element, the micro-LED elements generating the image light source through the micro-array lens.
4. The LED micro-array flash of claim 2, wherein each of the micro-LED elements belongs to one of a red LED, a green LED and a blue LED.
5. The LED micro-array flash of claim 4, wherein at least one red LED, at least one green LED, and at least one blue LED of the micro LED elements form a pixel group, and light emitted by the micro LED elements in the pixel group is mixed to generate a pixel in the patterned image light source.
6. The light emitting diode micro-array flash of claim 2, wherein the micro light emitting diode array module further comprises a substrate, the micro light emitting diode element being fabricated by an epitaxial structure directly attached to the substrate.
7. The light emitting diode micro array flash of claim 6, wherein the substrate is a CMOS integrated circuit.
8. The light emitting diode micro-array flash of claim 1, wherein the micro light emitting diode array module has a thickness of no more than 1 mm.
9. The led microarray flash of claim 1, wherein the optical module adjusts the focus position, size and display shape of the image for projection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611264396.6A CN108267909B (en) | 2016-12-30 | 2016-12-30 | Micro array flash lamp of light-emitting diode |
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| CN201611264396.6A CN108267909B (en) | 2016-12-30 | 2016-12-30 | Micro array flash lamp of light-emitting diode |
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| CN108267909B true CN108267909B (en) | 2021-06-01 |
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| US11954573B2 (en) | 2018-09-06 | 2024-04-09 | Black Sesame Technologies Inc. | Convolutional neural network using adaptive 3D array |
| US11622066B2 (en) * | 2020-10-23 | 2023-04-04 | Black Sesame Technologies Inc. | Flash array for portable camera system |
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| JP2005184369A (en) * | 2003-12-18 | 2005-07-07 | Nec Access Technica Ltd | Mobile phone terminal and contents display method and program thereof |
| CN103181154A (en) * | 2010-10-29 | 2013-06-26 | 加利福尼亚大学董事会 | Cellscope apparatus and methods for imaging |
| CN204613561U (en) * | 2015-05-15 | 2015-09-02 | 精元电脑股份有限公司 | To mix colours the light-emitting diode flash device of coordinate |
| CN105404084A (en) * | 2015-11-20 | 2016-03-16 | 惠州Tcl移动通信有限公司 | Projection system and projection apparatus based on mobile terminal flash lamp |
| CN105987313A (en) * | 2015-03-04 | 2016-10-05 | 光宝新加坡有限公司 | Surface packaging type Fresnel LED micro flash lamp structure |
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| JP2005184369A (en) * | 2003-12-18 | 2005-07-07 | Nec Access Technica Ltd | Mobile phone terminal and contents display method and program thereof |
| CN103181154A (en) * | 2010-10-29 | 2013-06-26 | 加利福尼亚大学董事会 | Cellscope apparatus and methods for imaging |
| CN105987313A (en) * | 2015-03-04 | 2016-10-05 | 光宝新加坡有限公司 | Surface packaging type Fresnel LED micro flash lamp structure |
| CN204613561U (en) * | 2015-05-15 | 2015-09-02 | 精元电脑股份有限公司 | To mix colours the light-emitting diode flash device of coordinate |
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