KR101833286B1 - Augmented Reality Wearable System Using Holographic Optical Element - Google Patents

Abstract

The present invention relates to an augmented reality wearable system using a holographic optical element to secure wide field of view angle (FOV) while reducing optical elements. The present invention includes: a light source input unit which digitalizes an image signal and generates a laser light source; an optical waveguide to transmit the laser light source provided from the light source input unit without loss; first and second mirror units (mirror 1, mirror 2) to reflect and transmit the laser light source inputted through the optical waveguide; a microelectromechanical system (MEMS) which controls color and brightness transmitted at each image dot by collecting the laser light source transmitted from the first and second mirror units (mirror 1, mirror 2); and a holographic optical unit which displays image information light-collected and controlled through the MEMS while forming a projection angle in the front of the view field of a user.

Description

[0001] The present invention relates to an Augmented Reality Wearable System using holographic optical element,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an augmented reality wearable system, and more particularly to an augmented reality wearable system using a holographic optical element (HOE) capable of securing a wide viewing angle by using a hologram optical element in an imaging apparatus using a laser as a light source. Augmented reality wearable system.

Recently, development of augmented reality based devices that display real-time virtual reality data on real-life objects has been expanded due to continuous development of information communication technology.

Korean Patent Application Laid-Open No. 10-2011-0136018 is a technology related to the configuration of a conventional augmented reality apparatus.

The first factor to realize such augmented reality is the virtual image realization which is fused with the natural external environment that can face the reality. In order to do so, we recognized that it is necessary to develop a device that can be worn like a pair of glasses and can see the outside in a transparent state and display a virtual image in front of it.

This approach is often referred to as natural front-view.

In order to implement such a method, it has been found that there is a problem that the condition that the outside should be the same as or almost similar to the state in which the outside is worn and the weight should be reduced in order to reduce the burden of wearing .

Therefore, optical structure of a simple structure is essential and remains a problem to be solved.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an imaging apparatus using a laser as a light source and a hologram optical element for reducing optical elements and providing a wide field of view angle (FOV) The present invention is to provide an augmented reality wearable system using a holographic optical element.

According to a preferred embodiment of the present invention, an augmented reality wearable system using a holographic optical element includes a light source input unit for digitizing an image signal and generating a laser light source; An optical waveguide for transmitting the laser light source provided from the light source input unit without loss; First and second mirror units (Mirror 1, Mirror 2) for reflecting and transmitting a laser light source input through the optical fiber; A microelectromechanical system (MEMS) for condensing the laser light source transmitted from the first and second mirror units to adjust the color and brightness of each image dot; And a holographic optical unit for forming and projecting image information converged and adjusted through the microelectromechanical control system (MEMS) on a visual field of the user in front of a visual field of the user, the holographic optical system comprising: Wherein the holographic optical unit comprises a front perspective type headset and employs a holographic optical element so as to secure a wide viewing angle, wherein the holographic optical element is a micro electro mechanical system (MEMS) And an internal angle of 35.72 degrees so as to secure a wide viewing angle.

Here, the light source input unit includes a red laser diode 12R, a green laser diode 12G, and a blue laser diode 12B for displaying an image by color, and the image information generated and provided from each laser diode A dichroic filter 14a and 14b for selectively passing the light according to the wavelength of light and an image filter 16 for processing information of an image of the image, Fiber Optic) to output the light source of the image.

The holographic optical unit may further include holographic optical elements 50a, 50b and 50h for exposing and displaying the adjusted image information in front of the user's view.

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According to a preferred embodiment of the present invention, in a video apparatus using a laser as a light source, a hologram optical element is used to enhance a field of view angle (FOV) It is possible to provide an effect of providing a real wearable system.

FIG. 1 is a diagram illustrating a configuration of an augmented reality wearable system using a holographic optical element according to a preferred embodiment of the present invention.
FIG. 2 is a partial block diagram illustrating a light source generation process and a process of the augmented reality wearable system using the holographic optical device according to a preferred embodiment of the present invention.
FIGS. 3 to 4 are exemplary structural views illustrating the principle and operation of an optical configuration of an augmented reality wearable system using a holographic optical element according to a preferred embodiment of the present invention,
5 is a reference diagram for explaining a configuration and a working principle of a holographic optical element.

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

(Example)

According to a preferred embodiment of the present invention, an augmented reality wearable system using a holographic optical element includes a light source input unit for digitizing an image signal and generating a laser light source; An optical waveguide for transmitting the laser light source provided from the light source input unit without loss; First and second mirror units (Mirror 1, Mirror 2) for reflecting and transmitting a laser light source input through the optical fiber; A microelectromechanical system (MEMS) for condensing the laser light source transmitted from the first and second mirror units to adjust the color and brightness of each image dot; And a holographic optical unit for forming a projection angle and displaying the image information converged and adjusted through the microelectromechanical control system (MEMS) in front of the user's field of view, and an augmented reality wearable system using the holographic optical element As a result,
Wherein the holographic optical unit comprises a front perspective type headset and adopts a holographic optical element so as to secure a wide viewing angle (Wide FOV)
And the holographic optical element is installed to have an internal angle of 35.72 degrees with the image signal generated and provided by the micro electro mechanical system (MEMS), thereby securing a wide viewing angle.

The configuration and operation of the augmented reality wearable system using the holographic optical element according to the preferred embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG.

FIG. 1 is a block diagram illustrating a configuration of an augmented reality wearable system using a holographic optical element according to a preferred embodiment of the present invention. FIG. 2 is a schematic diagram of a holographic optical element according to a preferred embodiment of the present invention. FIG. 2 is a partial block diagram illustrating a light source generation process and a processing process of the augmented reality wearable system.

FIGS. 3 to 4 are diagrams for explaining the principle and operation of an optical configuration of an augmented reality wearable system using a holographic optical element according to a preferred embodiment of the present invention. And a reference diagram for explaining the configuration and operation principle of the device, respectively.

In order to make the augmented reality wearable for the user's convenience of use, it is necessary that the state in which the user wears glasses is almost the same as or similar to the state in which the user does not wear the glasses.

To this end, in the augmented reality wearable system 100 using the holographic optical element according to the preferred embodiment of the present invention, the holographic optical element holographic optical element 50 and the lightweight holographic optical element 50a , 50b, and 50h.

The features and the operation of each element of the augmented reality wearable system 100 using the holographic optical element according to the embodiment of the present invention will be described first.

The light source input unit 10 performs a process of digitizing an image signal viewed in front of a user and generating a laser light source. Specifically, a red laser diode, a green laser diode, and blue laser diodes 12R, 12G, and 12B are employed to display a light source of an image.

The optical fiber 20 is formed of an optical cable to transmit the laser light source provided from the light source input unit 10 without loss.

The first and second mirror units (Mirror 1 and Mirror 2) 40 are reflectors for reflecting and transmitting the laser light source input through the optical fiber 20.

The laser display system using the red laser diode, the green laser diode, and the blue laser diodes 12R, 12G, and 12B according to the present invention includes a red, green, and blue laser light source And reproduces the natural color hue. The laser light source is condensed as a point light source and transmitted through a fiber optic.

 The microelectromechanical systems (MEMS) 30 condenses a laser light source transmitted from the first and second mirror units Mirror 1 and Mirror 2, And adjust brightness.

The condensed laser light sources R, G and B are provided to the microelectromechanical systems (MEMS) 30 to be driven at a high speed in a chip element composed of two axes (X, Y) And the light collecting portion 45 is disposed at the center thereof. The light-collecting unit 45 has a size of about 1 mm or less and is made up of a mirror for processing a light source.

Image information reflected through the first and second mirror units (Mirror 1 and Mirror 2) 40 is sequentially scanned in the light condensing unit 45, and laser on / off ) To synchronize the operation and the brightness information to display the image. Such an image display device may be referred to as a projection module (PM).

The holographic optical unit 50 is an optical processing device for forming and displaying the image information condensed and adjusted through the microelectromechanical control system (MEMS) on the front of the user's view.

The holographic optical unit 50 is configured such that an image generated from the above-described projection module through the holographic optical elements 50a, 50b, and 50h formed individually is incident on a holographic optical element (HOE) using a laser interference fringe So that the image is displayed in the main focus adjusted by the predetermined magnification and the predetermined reflection angle. At this time, the user can arbitrarily adjust the enlargement ratio and the reflection angle.

When the observer (or the user) places the eye on the focus through the above-described structure and operation, the image generated from the projection module is displayed on the retina of the user 1 and directly observed with the eye .

In addition, since a holographic device can be disposed on one or both of the glasses for wearing these modules, a stereoscopic image processing (stereo image processing) can be performed because a binocular and a single image display device can be implemented. The effect can be realized.

The light source input unit 10 includes a red laser diode 12R, a green laser diode 12G and a blue laser diode 12B for displaying an image by color, and each of the laser diodes 12R, 12G Dichroic filters 14a and 14b for selectively passing the image information generated and provided from the light sources 12A and 12B according to the wavelength of light and an image filter for de- ) 16 for outputting a light source of the image to the optical fiber.

 In this case, the dichroic filter is an optical filter that selectively passes light according to a wavelength, and includes a high-pass filter that passes a high wavelength but reflects a low wavelength, a low-pass filter that passes a low wavelength, . In the present invention, a dichroic filter having such a function can be selectively employed as a high-pass filter and a low-pass filter.

The holographic optical unit 50 further includes holographic optical elements 50a, 50b and 50h for exposing and displaying the adjusted image information in front of the user's view.

Further, the holographic optical section is constituted by a front-view type headset, and adopts a holographic optical element so as to ensure a wide viewing angle (Wide FOV).

By adopting this element, an observer or a user places an eye of the user 1 at the focus of a predetermined object (Object), and the image generated from the projection module is displayed on the retina and directly viewed through the naked eye The same effect can be obtained.

Since the user 1 can arrange both of these projection modules on both sides of the glasses to be worn, a stereoscopic image can be expressed by a stereo image processing method .

The holographic optical elements 50a, 50b, and 50h are provided to have an internal angle of 35.72 degrees with respect to the image signal generated and provided in the micro electro mechanical system (MEMS) 30 to secure a wide viewing angle.

The operation and effects of the augmented reality wearable system using the holographic optical element according to the embodiment of the present invention will be summarized as follows.

First, a three-color laser light source of red, green, and blue is irradiated to form a dot light source. In this case, the generated point light source is digitized and formed for each dot, and each dot light source has a separate color and brightness.

The dot light source is connected to the microelectromechanical control system (MEMS) 30 through the first and second mirror units (Mirror 1 and Mirror 2) 40 and 42 of the projection module through an optical cable. To the light collecting portion 45 provided at the center of the light receiving portion.

Thereafter, the transmitted point light sources are synchronized with the image signal, and are scanned while being driven horizontally and vertically. The transmitted point light sources scan the color and brightness transmitted to each image dot, and the eye of the user 1 (Microelectromechanical systems (MEMS)) 30 in front of the microelectromechanical control system.

The displayed image is reflected and enlarged through the holographic device and is displayed on the eye retina of the user 1 in a state where the speckle is removed through the image filter De-speckle 16, ) To visualize the image.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And can be regarded as falling within the scope of the present invention.

10: Light source input part
12R, 12G, 12B: red laser diode, green laser diode, blue laser diode
14a and 14b: a dichroic filter;
16: Image filter (De-speckle)
20: Optical waveguide (Fiber Optic)
30: MEMS (Microelectromechanical Systems)
40, 42: first and second mirror parts (Mirror 1, Mirror 2)
45: Collector
50: holographic optical part
50a, 50b, 50h: a holographic optical element
100: Augmented reality wearable system using holographic optical element.

Claims (5)

delete delete delete delete A light source input unit for digitizing a video signal and generating a laser light source; An optical waveguide for transmitting the laser light source provided from the light source input unit without loss; First and second mirror units (Mirror 1, Mirror 2) for reflecting and transmitting a laser light source input through the optical fiber; A microelectromechanical system (MEMS) for condensing the laser light source transmitted from the first and second mirror units to adjust the color and brightness of each image dot; And a holographic optical unit for forming a projection angle and displaying the image information converged and adjusted through the microelectromechanical control system (MEMS) in front of the user's field of view, and an augmented reality wearable system using the holographic optical element As a result,
Wherein the holographic optical unit comprises a front perspective type headset and adopts a holographic optical element so as to ensure a wide viewing angle (Wide FOV)
Wherein the holographic optical element is installed to have an internal angle of 35.72 degrees with an image signal generated and provided in the microelectromechanical control system (MEMS) to secure a wide viewing angle. system.

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