KR20130082403A - Dual display apparatus for portable device having projector - Google Patents

Dual display apparatus for portable device having projector Download PDF

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Publication number
KR20130082403A
KR20130082403A KR1020120003600A KR20120003600A KR20130082403A KR 20130082403 A KR20130082403 A KR 20130082403A KR 1020120003600 A KR1020120003600 A KR 1020120003600A KR 20120003600 A KR20120003600 A KR 20120003600A KR 20130082403 A KR20130082403 A KR 20130082403A
Authority
KR
South Korea
Prior art keywords
projector
light
dual display
portable device
variable
Prior art date
Application number
KR1020120003600A
Other languages
Korean (ko)
Inventor
김성원
계용찬
김성순
박중완
이중기
정문일
Original Assignee
삼성전자주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020120003600A priority Critical patent/KR20130082403A/en
Publication of KR20130082403A publication Critical patent/KR20130082403A/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/142—Adjusting of projection optics
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/28—Reflectors in projection beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

According to an aspect of the present invention, there is provided a dual display apparatus for a portable apparatus having a built-in projector, including a portable apparatus main body, a reflection mirror unit provided inside the portable apparatus main body and disposed in front of the projector, and the projector and the reflection. It is provided between the mirror portion, and includes a variable portion for transmitting or reflecting the light is converted in accordance with an electrical signal in order to project the light projected from the projector to the front or rear of the main body of the portable device.

Description

DUAL DISPLAY APPARATUS FOR PORTABLE DEVICE HAVING PROJECTOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual display device, and more particularly, to a dual display device of a portable device with a projector configured to transmit or reflect light according to an electrical signal instead of a mechanical device.

In general, a projector is used in various fields as an apparatus for magnifying and projecting image information. A typical projector projects image information by displaying image information on a built-in small size LCD (LCD) and transmitting a strong beam through a projection lens to irradiate a wall or the like.

In the case of a projector using a built-in LCD (LCD), because of the size of the built-in LCD (LCD), there is a disadvantage that the overall size of the projector is large.

Accordingly, in order to reduce the size of the projector, a pico projector (Pico Projector) of a method of projecting pixels of image information using a laser one by one has been proposed.

The pico projector projects image information one pixel on a wall or the like, and projects two-dimensional images in an interlaced or sequential scan manner similar to analog television images.

Since the pico projector is very small, it is mainly embedded in a portable device and a camera device.

As shown in Figs. 1 and 2, the configuration of the portable device 1 incorporating the pico projector is schematically shown, and includes a camera lens module (not shown), a pico projector 3, and an LCD. (LCD) / OLED (4).

As shown in FIGS. 1 and 2, the pico projector 3 includes a light source unit 3a for projecting light A1 forward, a projection lens 3b provided in front of the light source unit 3a, and And a planar mirror 5a and an aspheric mirror, which are disposed in front of the light source unit 3a and rotate and project the light A1 projected from the light source unit 3a forward or backward by driving the drive motor 4. It consists of the mirror part 5 which integrally formed 5b.

However, a portable device incorporating a conventional pico projector requires a mirror unit integrally formed with a planar mirror and an aspheric mirror in order to project light forward or rearward, and the mirror unit of a mechanical device (drive motor and gear unit) Since the structure is to project the light forward or backward by the rotation, there is a problem that the fast switching is difficult because the switching time is required by the mechanical device when switching the projection direction of the light forward or backward. In order to overcome this problem, when the speed of switching the mirror part is increased, it is difficult to adjust the focus of the light, thereby lowering the reliability of the product.

In addition, the mirror part has to have an aspherical mirror made of precise curvature, which makes it difficult to manufacture the aspherical mirror.

In addition, since the conventional portable device incorporating the pico projector has a structure in which the mirror unit is rotated by a mechanical device (drive motor and gear unit), a space for installing the mechanical device in the portable device is required, which is why As the size and volume are increased, deterioration factors occur in miniaturization and slimming.

The projector constituting the mechanical device has already been described in Korean Patent Registration No. 10-164655 (1998, 09, 14).

Therefore, there is a need for an apparatus that transmits or reflects light by being switched according to an electric signal rather than rotating the mirror by a mechanical device.

The present invention provides a dual display device of a portable device with a built-in projector which can switch the projection direction of light without a conventional mechanical device by configuring a variable part which is converted according to an electrical signal to transmit or reflect light. .

In addition, the present invention comprises a variable portion that is transmitted in accordance with the electrical signal to transmit or reflect the light, so that there is no mechanical movement of the mirror by the mechanical device when switching the projection direction of the light, the focusing error and switching time that can be generated by rotation The present invention provides a dual display device for a portable device with a built-in projector that prevents the increase and improves the switching time and speed of the product, thereby improving the reliability of the product.

In addition, the present invention is configured by a variable portion for transmitting or reflecting light is converted in accordance with the electrical signal instead of the existing mechanical device, eliminating the need for the conventional aspheric mirror used to reduce the manufacturing cost of the product, the installation space of the mechanical device It is to provide a dual display device of a portable device with a built-in projector that can reduce the size and make the product small.

In order to solve the above problems, the present invention is a dual display device of a portable device with a built-in projector,

A portable device body;

A reflection mirror unit provided inside the main body of the portable device and disposed in front of the projector; And

A variable portion provided between the projector and the reflective mirror portion and switched in accordance with an electrical signal to project the light projected from the projector to the front or the rear of the main body of the portable device, thereby transmitting or reflecting the light. do.

As described above, according to the dual display apparatus of the portable apparatus in which the projector according to the present invention is incorporated,

It is possible to change the projection direction of the light without the existing mechanical device by configuring a variable part that is transmitted according to the electrical signal to transmit or reflect the light, and there is no mechanical movement of the mirror by the mechanical device when switching the projection direction of the light. This can improve the reliability of the product by avoiding possible focusing errors and increased turnaround time, as well as improve the turnaround time and speed of the product.

In addition, since the existing aspheric mirrors are not used, the manufacturing cost and manufacturing cost of the product are reduced, and there is no effect of the installation space of the mechanical device, thereby minimizing and slimming the product.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a state in which light is projected forward by a mirror part of a conventional portable device incorporating a pico projector.
Fig. 2 is a view showing a state in which light is projected rearward by a mirror part of the configuration of a portable apparatus incorporating a conventional pico projector.
3 is a view showing a state in which light is projected forward by the variable part of the configuration of a dual display device of a portable device with a built-in projector according to an embodiment of the present invention.
4 is a view showing a state in which light is projected backward by a variable part of the configuration of a dual display device of a portable device with a built-in projector according to an embodiment of the present invention.
5 is a perspective view showing an operating state of a dual display device of a portable device with a built-in projector according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, a detailed description of the configuration is omitted in order to avoid obscuring the gist of the present invention.

3 and 4 are views illustrating the configuration and operation of the dual display apparatus 10 of the portable apparatus in which the projector is built according to the present invention.

First, the configuration of the dual display apparatus 10 will be described with reference to FIGS. 3 and 4. The dual display apparatus 10 includes a portable apparatus main body 20, a reflection mirror unit 30, and a variable unit 40. The portable device main body 20 is configured to include the projector 11 having the projection lens 11a in front, the reflection mirror portion 30 and the variable portion 40. The reflective mirror 30 is disposed in front of the projector 11 and the portable device to transmit the light A1 of the projector 11 forward through the variable portion 40 described later. It is provided inside the main body 20. The variable part 40 is converted into a transmissive or reflective type according to an electric signal in order to project the light A1 projected from the projector 11 to the front or the rear of the main body 20 of the portable device. It is provided between the projector 11 and the reflection mirror unit 30 so as to transmit or reflect (A1).

3 and 4, the variable part 40 will be described in more detail. The variable part 40 is converted into a transmissive type by receiving an electric signal when the light A1 is projected forward. The light A1 is transmitted and projected forward through the reflective mirror 30. In addition, the variable part 40 receives an electric signal when projecting the light A1 backward and converts it into a reflection type, and reflects the light A1 through the variable part 40 converted to a reflection type. It is intended to project backwards as well as to.

In addition, the variable part 40 includes a control part 50 for applying a signal to convert the light A1 into a transmission type or a reflection type when projecting the light A1 forward or backward.

As described above with reference to FIG. 4, the variable part 40 is preferably made of a transparent color when converted to a transmissive type. The variable portion 40 is preferably made of a reflective color when switching to the reflective type. The reflective color is preferably one of white, white and metallic colors, and the reflective color may be other reflective colors other than white, white and metallic colors.

 In addition, as shown in FIG. 5, the variable part 40 may project the light A1 to the front or the rear, and to project the light A1 to the bottom or the upper surface of the main body 20 of the portable device. The variable part 40 (shown in FIG. 3) can be projected to a place other than the floor or the top surface of the portable device main body 20 (eg, a ceiling of a building).

The variable part 40 is preferably made of a switchable mirror, and the variable part 40 may be a device other than a switchable mirror. (Eg, a color conversion liquid crystal display and an active part). Mirror, etc.)

On the other hand, the dual display device 10 according to an embodiment of the present invention can be applied to a portable device in which the projector 11 is built as a representative application example. However, the dual display apparatus 10 is not necessarily limited to a portable device in which the projector 11 is embedded, and may be applied to various types of terminals in which the projector 11 is embedded.

Examples of various types of terminals in which a projector is built according to an exemplary embodiment of the present invention include all camera devices and mobile communication terminals operating based on communication protocols corresponding to various communication systems. In addition, all information and communication devices such as MP3 players, portable multimedia players (PMPs), navigation, game consoles, notebooks, billboards, TVs, digital broadcasting players, personal digital assistants (PDAs), and smart phones And an application device therefor.

In this state, the operation process of the dual display apparatus will be described in more detail with reference to FIGS. 3 to 5 described above. First, a projector having a projection lens 11a in the portable apparatus main body 20 will be described. 11) is provided, the front of the projector 11 is provided with a variable portion 40, the front of the variable portion 40 is provided with a reflective mirror portion 30.

Here, when the user projects the light A1 of the projector 11 to the front, as shown in FIGS. 3 and 5 mentioned above, the variable portion 40 to the front or rear of the light A1. Since the control unit 50 is configured to apply an electric signal to switch between the transmission type and the reflection type during projection, the controller 50 converts the variable part 40 to the transmission type according to the electric signal. The variable portion 40 is made of a transparent color when switching to the transmissive type.

In this state, the projector 11 projects the light A1 to the variable part 40, and the variable part 40 converted to the transmission type transmits the light A1. The transmitted light A1 is projected to the front of the portable device main body 20 through the reflective mirror 30.

In this case, when the user projects the light A1 of the projector 11 backward, as described above with reference to FIGS. 4 and 5, the controller 50 reflects the variable part 40 according to an electric signal. Switch to type The variable part 40 is formed of the aforementioned reflective color when converted to the reflective type.

In this state, the projector 11 projects the light A1 to the variable part 40, and the variable part 40 converted to the reflective type causes the light A1 to emit the light A1. ) To the rear.

In this case, the variable unit 40 converted to the reflective type may not only project the rear of the portable apparatus main body 20 but also project the bottom and the upper surface of the portable apparatus main body 20.

As described above, the variable part 40 is configured to be directly switchable to a transmissive or reflective type according to an electrical signal of the controller 500 without a mechanical device (not shown), so that the front or rear side of the light A1 can be In addition to improving the projection direction speed, it is also possible to shorten the time, and also, by the mechanical device (not shown), to prevent the focusing error of the light A1 generated during the rotation of the existing mirror unit and the increase in the switching time. It can improve the reliability of the product.

Furthermore, by configuring the variable part 40 which is directly converted into a transmissive type or a reflective type according to an electric signal instead of an existing mechanical device (not shown) in the portable device main body 20, an installation space of the existing mechanical device is required. Since the product can be miniaturized and slimmed, and there is no need to manufacture an existing aspheric mirror, the number of parts and manufacturing cost of the product can be reduced.

The dual display device of the portable device in which the projector of the present invention as described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes can be made to the portable device in which the various types of projectors are built. The possibility will be apparent to those of ordinary skill in the art.

Projector: 11 Mobile Unit Body: 20
Reflective mirror section: 30 Variable section: 40

Claims (10)

In a dual display device of a portable device with a built-in projector,
A portable device body;
A reflection mirror unit provided inside the main body of the portable device and disposed in front of the projector; And
A variable part provided between the projector and the reflection mirror part, the variable part being converted according to an electric signal to project the light projected from the projector to the front or the rear of the main body of the portable device, and transmitting or reflecting the light. Dual display device of a portable device with a built-in projector, characterized in that.
The dual display apparatus of claim 1, wherein the reflective mirror projects the light transmitted through the variable part to the front.
The method of claim 1, wherein the variable part is applied to an electric signal when projecting the light forward to switch to the transmission type to transmit the light and projected forward through the reflective mirror,
When the projection of the light in the rear, the electric signal is applied to convert the variable portion into a reflective type, and reflects the light through the variable portion converted to the reflective type and the projector is characterized in that the projected to the rear Dual display device for mobile devices.
The dual display apparatus of claim 1, wherein the variable unit includes a control unit which applies a signal to convert the light into a transmission type or a reflection type when the light is projected forward or backward. .
The dual display apparatus of claim 4, wherein the variable part is made of transparent color when the variable part is converted into a transmissive type.
The dual display apparatus of claim 4, wherein the variable part is formed of a reflective color when the variable part is converted into a reflective type.
The dual display apparatus of claim 6, wherein the reflective color is any one of white, gray, and metallic colors.
The dual display apparatus of claim 1, wherein the variable part projects the light to the front or the rear and projects the light to the bottom or the top of the main body of the portable device.
The dual display apparatus of claim 1, wherein the variable unit comprises a switchable mirror.
In a dual display device of a portable device with a built-in projector,
A portable device body;
And a variable unit which transmits or reflects the light projected from the projector by being switched in accordance with an electric signal.




KR1020120003600A 2012-01-11 2012-01-11 Dual display apparatus for portable device having projector KR20130082403A (en)

Priority Applications (1)

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KR1020120003600A KR20130082403A (en) 2012-01-11 2012-01-11 Dual display apparatus for portable device having projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120003600A KR20130082403A (en) 2012-01-11 2012-01-11 Dual display apparatus for portable device having projector

Publications (1)

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KR20130082403A true KR20130082403A (en) 2013-07-19

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KR1020120003600A KR20130082403A (en) 2012-01-11 2012-01-11 Dual display apparatus for portable device having projector

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KR (1) KR20130082403A (en)

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