KR102452391B1 - Multiple viewing angle monitor system using a transparent optical lens with recorded optical pattern - Google Patents

Abstract

Disclosed is a multi-view angle monitor system using a transparent optical lens on which an optical pattern is recorded. The system comprises: a monitor device mounted on a front surface unit of a vehicle and displaying multi-view angle videos; and a glassroof installed on a roof of the vehicle and magnifying and reflecting selected videos from among the multi-view angle videos. The multi-view angle videos displayed on the monitor device include: a first multi-view angle video having the first display direction; and a second multi-view angle video having the second display direction facing the direction in which the glassroof is installed. The system allows a user to be able to watch a video on a wide screen.

Description

MULTIPLE VIEWING ANGLE MONITOR SYSTEM USING A TRANSPARENT OPTICAL LENS WITH RECORDED OPTICAL PATTERN

The present invention relates to a multi-viewing angle monitor system using a transparent optical lens on which an optical pattern is recorded, and more particularly, to a multi-viewing-angle monitor system capable of magnified diffraction and reflection through a transparent optical lens using a monitor and a glass roof in a vehicle. it's about

Existing vehicles were mainly meant as a means of transportation, but as various sound systems and infotainment systems are installed in vehicles, they are also playing a role of providing various information and entertainment to passengers, including drivers, while moving. .

Typically, a display is installed on the front (or center fascia) of the vehicle interior for the infotainment system. In the case of providing an entertaining image while driving through such a display, the image is recognized by the driver in order to prevent an accident while driving. It is legally restricted from doing so.

For this reason, as a means of providing an image for passengers in the passenger seat or the rear seat, a separate display is provided in the rear seat or the passenger seat in many cases.

However, in this case, there is a problem in that it is difficult to install the display by applying the display size as large as possible within the limited space because the display for the rear seat passengers must be provided individually in the rear seat, and the viewable range is limited for each position of the rear seat passenger. Therefore, there is a problem that an individual display must be installed for each boarding position of the rear seat passenger.

On the other hand, the roof constituting the vehicle used to add a little sense of openness by installing a sunroof in the past. It is in a trend of dissemination.

An object of the present invention to solve the above problems is to create two multi-viewing-angle images on a monitor mounted on the front of a vehicle, and configure each of the generated multi-viewing-angle images to be viewed separately on a monitor and a glass roof. By doing so, space utilization can be maximized, and the multi-viewing angle image shown on the glass roof is enlarged and provided to rear seat passengers to provide a system that can view the image on a wide screen.

One aspect of the present invention for achieving the above object provides a multi-viewing angle monitor system capable of magnified diffraction reflection.

The system includes: a monitor device mounted on a front part of a vehicle to display images from multiple viewing angles; and a glass roof installed on the roof of the vehicle to enlarge and reflect a selected image from among the multiple viewing angle images.

The multi-viewing-angle images displayed on the monitor device may include: a first multi-viewing-angle image having a first display direction; and a second multi-viewing-angle image having a second display direction toward a direction in which the glass roof is installed.

The glass roof refracts and reflects the second multi-viewing-angle image from the second display direction to a third display direction to display the second multi-viewing-angle image in the third display direction.

The third display direction may be a direction corresponding to a direction in which passengers riding on the rear seat of the driver's seat in the vehicle look at the glass roof.

The monitor device may include: a multi-viewing-angle image generator configured to generate the first multi-viewing-angle image and the second multi-viewing-angle image; a single display panel receiving the first multi-viewing-angle image and the second multi-viewing-angle image from the multi-viewing-angle image generator and simultaneously displaying the received image; an image separation optical unit for guiding paths through which the first multi-viewing-angle image and the second multi-viewing-angle image are processed to be separated from each other; a focusing lens unit for focusing the first multi-viewing-angle image and the second multi-viewing-angle image guided by the image separation optical unit, respectively; and an image reflection unit reflecting the first multi-viewing-angle image and the second multi-viewing-angle image transmitted from the focusing lens unit in the first display direction and the second display direction, respectively.

At least a portion of the glass roof includes a refracting unit, wherein the refracting unit refracts and reflects the second multi-viewing angle image transmitted at an incident angle corresponding to the second display direction in the third display direction. Including a lens, the transparent optical lens, an optical pattern based on a holographic optical element (HOE) may be recorded in advance.

When using the multi-viewing angle monitor system capable of magnified diffraction and reflection according to the present invention as described above, two multi-viewing-angle images are generated on the monitor mounted on the front of the vehicle, and each of the generated multi-viewing-angle images is displayed on the monitor and the glass roof. By configuring it so that it can be viewed in the space, it is possible to maximize the space utilization.

In addition, by magnifying the multi-viewing angle image shown on the glass roof and providing it to the rear seat occupants, the rear seat occupants can view the image on a wide screen.

In addition, since the image provided to the rear seat occupant through the glass roof is not visible to the driver in the driver's seat, but only in the view of the rear seat occupant, there is an advantage in preventing accidents while driving and meeting legal standards.

In addition, the image provided through the monitor device on the front of the vehicle can be viewed not only by the driver but also by the passengers in the rear seat, so that the role of the existing front monitor device of the vehicle can be maintained.

1 is a conceptual diagram illustrating a multi-viewing angle monitor system capable of magnified diffraction and reflection according to an embodiment.
FIG. 2 is a conceptual diagram illustrating the system according to FIG. 1 from the perspective of a rear seat occupant.
FIG. 3 is a block diagram illustrating a configuration of a monitor device mounted on a front part of a vehicle according to FIG. 1 .
FIG. 4 is a conceptual diagram for explaining an operation of the monitor device according to FIG. 3 .
FIG. 5 is a conceptual diagram for explaining the operation of a glass roof in the system according to FIG. 1 .
FIG. 6 is a view exemplarily showing the configuration of the refractive reflector according to FIG. 5 .

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

Terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a multi-viewing angle monitor system capable of magnified diffraction and reflection according to an embodiment. FIG. 2 is a conceptual diagram illustrating the system according to FIG. 1 from the perspective of a rear seat occupant.

Referring to FIG. 1 , a multi-viewing angle monitor system 1000 capable of magnified diffraction and reflection according to an embodiment includes a monitor device 100 mounted on a front part of a vehicle to display multiple viewing angle images, and the monitor device 100 . It may include a glass roof 200 for magnifying and reflecting a selected image from among the multiple viewing angle images displayed in .

The monitor apparatus 100 uses a single display panel for a first multi-viewing-angle image IMG1 having a first display direction and a second multi-viewing-angle image IMG2 having a second display direction toward a direction in which the glaploop is located. can be displayed. The first to second display directions may refer to directions in which images are displayed.

Here, the first display direction corresponds to a direction in which passengers riding on a front seat (eg, a driver's seat or a passenger seat next to the driver's seat) in the vehicle viewed the monitor device 100 (or facing the opposite direction) direction can be. Accordingly, when passengers riding in the front of the vehicle look at the monitor device 100 , the first multi-viewing-angle image IMG1 may be viewed.

In addition, the second display direction may be a direction toward the glass roof installed on the roof in the vehicle. Accordingly, even when passengers riding in the front of the vehicle look at the monitor device 100 , the second multi-viewing-angle image IMG2 is not viewed.

The glass roof 200 may refract and reflect the second multi-viewing-angle image IMG2 to display the second multi-viewing-angle image IMG2 in the third display direction.

Here, the third display direction corresponds to the direction in which the occupants in the rear seat (for example, the rear seat may be the driver's seat or other seats except for the passenger seat next to the driver's seat) looked at the glass roof 200 in the vehicle ( Or it may be a direction opposite to the direction in which it is viewed). Accordingly, when passengers in the rear seat inside the vehicle look at the glass roof 200 , the second multi-viewing-angle image IMG2 may be viewed.

In this case, the glass roof 200 may refract and reflect the second multi-viewing angle image IMG2 by enlarging it. In order to refract and reflect the second multiple viewing angle image IMG2 to be viewed from the rear seat, a transparent optical lens 211 may be inserted or attached to the glass roof 200 , and the second multiple viewing angle image IMG2 may be inserted through the transparent optical lens 211 . The viewing angle image IMG2 may be refracted and reflected in the third display direction. The transparent optical lens 211 is a thin-film lens with high transmittance, and at the same time, an optical pattern based on a holographic optical element (HOE) may be recorded.

In addition, the transparent optical lens 211 is configured to focus at a focal length set to enlarge the refracted and reflected second multi-viewing-angle image IMG2 according to a preset magnification ratio, thereby enlarging the second multi-viewing-angle image IMG2. It can be displayed in the third display direction.

For example, referring to FIG. 2 , when occupants in the rear seat inside the vehicle look at the glass roof 200 , the second multi-viewing-angle image IMG2 enlarged in the third display direction may be viewed.

On the other hand, when passengers riding in the rear seat turn their heads to face the front of the inside of the vehicle, the first multi-viewing-angle image IMG1 having the first display direction can also be viewed.

On the other hand, in the case of passengers riding in the driver's seat or the passenger seat inside the vehicle, since it is impossible to observe the glass roof 200 in the direction corresponding to the third display direction due to the seat position, the passengers riding in the driver's seat or the passenger seat 2 Multi-viewing angle image (IMG2) cannot be viewed.

In the head-up display (HUD) method using the existing PGU (Picture Generation Unit), the larger the volume, the larger the image formed. Therefore, there is a problem that the volume of the PGU must be large, and it is difficult to express a large screen because the volume of the PGU cannot be increased beyond the limit within a limited space.

However, since the glass roof 200 according to the present invention uses the transparent optical lens 211 to reflect and enlarge the second multi-viewing angle image IMG2 of a sufficiently large screen even if the volume of the monitor device 100 is small. has the advantage of being able to provide

FIG. 3 is a block diagram illustrating a configuration of a monitor device mounted on a front part of a vehicle according to FIG. 1 . FIG. 4 is a conceptual diagram for explaining an operation of the monitor device according to FIG. 3 .

3 and 4 , the monitor apparatus 100 generates a two-dimensional (2D) multi-viewing angle image IMG1 and a two-dimensional (2D) multi-viewing angle image IMG2 for generating a multi-viewing angle. The first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 are provided from the image generator 110 and the multi-viewing-angle image generator 110 , and the first multi-viewing-angle image IMG1 and the second multi-viewing angle are provided. A single display panel 120 that simultaneously displays an image IMG2, and image separation optics for guiding a path through which the first multi-viewing-angle image IMG1 progresses and a path along which the second multi-viewing-angle image IMG2 progresses are separated from each other The unit 130, the focusing lens unit 140 for focusing the first multi-viewing angle image IMG1 and the second multi-viewing angle image IMG2 guided by the image separation optical unit 130, respectively, and the focusing lens unit ( 140) may include an image reflection unit 150 for reflecting the first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 in different directions (the first display direction and the second display direction). have.

Specifically, the multi-viewing-angle image generator 110 may acquire a first image to be provided to occupants in the front of the vehicle and a second image to be provided to occupants in the rear seat of the vehicle. For example, the first image may be a navigation image that can be viewed by a driver or passenger seated in the front of the vehicle or an image displaying vehicle information. The second image may be an entertainment image that can be viewed by occupants in the rear seat of the vehicle.

In this case, the first image to the second image may be read by the multi-viewing-angle image generator 110 after being stored in a separate storage device or input to the multi-viewing-angle image generator 110 through a separate input means, In addition, it may be provided to the multi-viewing angle image generator 110 in various implementation methods.

The multi-viewing-angle image generator 110 generates a first multi-viewing-angle image IMG1 by applying a first phase profile that determines a moving direction of the first image to the first image, and determines a moving direction of the second image A second multi-viewing angle image IMG2 may be generated by applying the second phase profile to the second image.

For example, the multi-viewing-angle image generator 110 generates a first multi-viewing-angle image IMG1 by convolutioning a first phase profile with a first image, and convolutions a second phase profile with the second image to obtain a second A multi-viewing-angle image IMG1 may be generated.

The first phase profile or the second phase profile may be data forming a prism pattern having a periodic sinusoidal wave shape. Light can be refracted in a certain direction by the prism pattern, and the refracted angle is determined by the period of the prism pattern.

That is, the first phase profile or the second phase profile may be data indicating that the first image and the second image may proceed in different directions by changing angles at which the first image and the second image are refracted, respectively.

The multi-viewing-angle image generator 110 may transmit the first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 to the display panel 120 . For example, the multi-viewing-angle image generator 110 may set each of the pixel values constituting the first multi-viewing-angle image IMG1 to positions corresponding to each of the pixel values constituting the second multi-viewing-angle image IMG2. The summed image data may be transmitted to the display panel 120 .

The display panel 120 is configured as a single array of a plurality of pixels, and simultaneously displays the first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 using the configured single array. can be displayed

The image separation optical unit 130 advances the first multi-viewing-angle image IMG1 displayed by the display panel 120 in a first direction, and converts the second multi-viewing-angle image IMG2 to a second direction different from the first direction. direction, the first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 may be separated from each other. For example, the image splitting optical unit 130 may be a beam splitter that splits incident light into two beams.

That is, since the first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 advance in the first direction and the second direction, respectively, the first multi-viewing angle image passing through the second image separation optical unit 130 . The image IMG1 and the second multi-viewing angle image IMG2 may reach different positions of the focusing lens unit 140 .

For example, an arrow shown as a dotted line in FIG. 4 shows a direction in which the first multi-viewing angle image IMG1 is transmitted (or progressed), and an arrow shown as a solid line in FIG. 4 is a second multi-viewing-angle image ( The direction in which IMG2) is transmitted (or progressed) is shown.

Referring to FIG. 4 , the first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 displayed simultaneously by each of the pixels constituting the array of the display panel 120 have different first directions and second direction to reach the focusing lens 140 .

The focusing lens 140 may focus lights displaying the first multi-viewing-angle image IMG1 to a first position, and may focus lights displaying the second multi-viewing-angle image IMG2 to a second position. For example, the focusing lens 140 may be a Fourier lens.

The image reflection unit 150 may include a first reflection unit 150 installed at a first position and a second reflection unit 150b installed at a second position.

That is, the first reflection unit 150a and the first reflection unit 150a display the first multi-viewing angle image IMG1 focused to the first position in a first display direction corresponding to the front portion of the monitor apparatus 100 . It may be a mirror having an angle of inclination that reflects it. The second reflector 150b may be a mirror having an inclination angle for reflecting the second multi-viewing-angle image IMG2 focused to the second position in the second display direction corresponding to the direction in which the glass roof 200 is located.

Accordingly, the second multi-viewing-angle image IMG2 reflected by the second reflector 150b is transmitted to the glass roof 200 and the first multi-viewing-angle image IMG1 reflected by the first reflector 150a. is transmitted to the front part of the monitor device 100 and can be viewed by a passenger (a driver or a passenger in a passenger seat) seated in the front of the monitor device 100 .

Meanwhile, although not shown in the drawings, the monitor apparatus 100 may further include a light source unit for incident coherent illumination light onto the display panel 120 . The light source unit may change the coherent illumination light into parallel light, and the changed parallel light may be incident on the display panel 120 through the image separation optical unit 130 .

The display panel 120 may simultaneously display the first multi-viewing-angle image IMG1 and the second multi-viewing-angle image IMG2 by reflecting and modulating the coherent illumination light incident by the light source unit.

For example, the display panel 120 may be a reflective spatial light modulator that displays an image by reflecting illumination light, a transmissive spatial light modulator that displays an image by transmitting illumination light, etc. More specifically, for example, a semiconductor modulator , a liquid crystal device (LCD), a digital micromirror device (DMD), a liquid crystal on silicon (LCoS), a light emitting diode (LED), and the like.

Meanwhile, the image separation optical unit 130 , the focusing lens unit 140 , and the image reflection unit 150 described with reference to FIGS. 3 to 4 may be various types of viewing angle adjusting devices (light fields) or viewing angles by those of ordinary skill in the art. It may be implemented by being deformed by the control film, and this modified embodiment may also be interpreted as being included in one embodiment.

FIG. 5 is a conceptual diagram for explaining the operation of a glass roof in the system according to FIG. 1 . FIG. 6 is a view exemplarily showing the configuration of the refractive reflector according to FIG. 5 .

As described with reference to FIG. 4 , the second multi-viewing angle image IMG2 may be transmitted to the glass roof 200 .

More specifically, referring to FIG. 5 , the second multi-viewing angle image IMG2 may be transmitted to the refractive reflector 210 configured in at least a part of the glass roof 200 .

The refracting unit 210 may include a transparent optical lens 211 that refracts and reflects the second multi-viewing angle image IMG2 transmitted at a specified incident angle in a direction corresponding to the third display direction. The transparent optical lens 211 is an optical pattern based on a holographic optical element (HOE) or, more specifically, an optical pattern based on a reflective holographic optical element (HOE) in which the directions of the object beam and the reference beam are incident on the medium opposite to each other. A pattern can be recorded.

Specifically, referring to FIG. 6 , the transparent optical lens 211 may be inserted between the first glass 212 and the second glass 213 constituting the glass roof 200 .

At this time, the optical pattern recorded on the transparent optical lens 211 emits the diffracted light DR obtained by refracting and reflecting the first incident light IR1 incident at a predetermined angle of incidence at a specified reflection angle, and is other than the predetermined angle of incidence. Second incident lights IR2 incident at different angles may pass through as they are.

Here, the angle of incidence may be an angle corresponding to the second display direction in which the second multi-viewing angle image IMG2 is reflected by the second reflector 150b, and the angle of reflection may be an angle corresponding to the occupant in the rear seat of the vehicle. It may be an angle corresponding to (or the same as) the direction in which the 210 is viewed.

Accordingly, the optical pattern may be recorded (or recorded) on the transparent optical lens 211 in advance so that only the incident light incident at the aforementioned predetermined angle of incidence can be reflected at the specified reflection angle. Here, the meaning of being recorded (or recorded) means that an interference fringe obtained by meeting two lights using a laser on the recording medium (or the transparent optical lens 211) is generated, and the diffraction characteristics of light are determined by the generated interference fringe. It changes.

The transparent optical lens 211 may be a Fresnel lens that receives the diffracted light DR emitted by the pre-recorded optical pattern and focuses the diffracted light DR at a focal length according to a predetermined magnification ratio.

Since the Fresnel lens focuses the diffracted light DR at a focal length according to a predetermined magnification ratio, the second multi-viewing-angle image IMG2 refracted and reflected by the optical pattern may be enlarged.

That is, the transparent optical lens 211 refracts and reflects the second multi-viewing angle image IMG2 displayed in the second display direction in the second display direction in the third display direction by the pre-recorded optical pattern, and Fresnel By moving the focusing position of the second multi-viewing-angle image (IMG2) that is refracted and reflected by the characteristic as a lens according to the magnification ratio to form an image, the rear seat passenger can view the enlarged multi-viewing-angle image (IMG2). .

For example, referring to FIGS. 5 and 6 , when a passenger in the rear seat of the vehicle looks at the refractive reflector 210, the glass roof ( 200), the diffracted lights DR constituting the second multi-viewing-angle image IMG2 may be focused, and the passenger in the rear seat may view the second multi-viewing-angle image IMG2 in an enlarged form. .

Meanwhile, in FIG. 6 , the transparent optical lens 211 is illustrated as being inserted between the first glass 212 and the second glass 213 , but this is exemplary and a part of the first glass 212 or It may be implemented as a part of the second glass 213 or may be implemented in a form that is bonded to one side of a single glass constituting the glass roof 200 .

The methods according to the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer readable medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software.

Examples of computer-readable media may include hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions may include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as at least one software module to perform the operations of the present invention, and vice versa.

In addition, the above-described method or apparatus may be implemented by combining all or part of its configuration or function, or may be implemented separately.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it can be done.

100: monitor device
110: multi-viewing angle image generator
120: display panel
130: image separation optical unit
140: focusing lens unit
150: image reflection unit
200: glass roof
210: refractive reflector

Claims (1)

A multi-viewing angle monitor system using a transparent optical lens in which an optical pattern is recorded,
a monitor device mounted on the front part of the vehicle to display images from multiple viewing angles; and
and a glass roof installed on the roof of the vehicle to enlarge and reflect the selected image from among the multiple viewing angle images,
The multiple viewing angle images displayed on the monitor device are,
a first multi-viewing angle image having a first display direction; and
and a second multi-viewing angle image having a second display direction toward the direction in which the glass roof is installed,
At least a portion of the glass roof includes a transparent optical lens in which an optical pattern based on a holographic optical element (HOE) is recorded in advance,
The optical pattern emits diffracted light by refracting and reflecting the first incident light incident at a predetermined angle of incidence at the specified reflection angle, and passes the second incident light incident at an angle other than the incident angle as it is,
The angle of incidence is an angle corresponding to the second display direction, and the angle of reflection is an angle corresponding to a direction in which a rear seat passenger looks at the glass roof.

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