KR101288231B1 - Display system - Google Patents

Abstract

A display system according to the present invention comprises: a display unit; A substrate transmitting the light incident from the display unit in a captured state; A partial reflecting surface provided on the substrate to reflect the light toward the first surface side of the substrate; And a light blocking member disposed on the second surface side of the substrate opposite to the first surface to block external light passing through the first surface. The display system of the present invention is not affected by the weight that the user feels by the shading glasses during use, does not need to carry the shading member separately, the appearance is improved, and is distinguished from ordinary sunglasses when viewed from the outside. The design is beautiful enough so that it is advantageous to popularization.

display

Description

Display system

1 is a perspective view of a display system according to the present invention;

2 is a view for explaining the operation of transmitting light in the interior of the substrate in the display system according to the present invention.

3 shows a display system according to a first embodiment of the invention.

4 is a diagram illustrating the type of metal used for vacuum optical deposition.

5 is a display system according to a second embodiment of the present invention.

6 is a display system according to a third embodiment of the present invention.

Figure 7 is a cross-sectional view of the LCD module applied to the embodiment 3 of the present invention.

8 is a display system according to a fourth embodiment of the present invention.

9 is a graph showing the degree of transmission of external light by a pair of the polarizing plates.

<Explanation of symbols for the main parts of the drawings>

2: display unit 10: first reflective surface 11: partial reflective surface

20: light shielding film

US Patent No. 6,829,095

The present invention relates to a display system, and more particularly, to a head-mounted display system supported by a user's head.

The head-supported display system (hereinafter, referred to as a display system for short) is a display system used on the head or on the ear like a pair of glasses, and is a display system that allows a user to see a virtual image of an image placed in front of his or her eyes. Therefore, it is convenient because the user can view the image by hand without the user holding the display by hand.

Among such conventional display systems, while wearing in the form of glasses, the display system not only can see the image formed on the lens through the lens, but also the external image transmitted through the lens into the user's eye from the outside. There is this. Such a display system has recently been increasingly used because it is not easy for others to recognize that the user is mounting the display system and can be used by the user at a smaller size. This form is abbreviated as See-Through system.

A representative example of the seed through system is US Patent No. 6,829,095 (hereinafter referred to), which is registered in the United States by Lumus, Ltd., which is based in Israel. In the system, a plurality of reflective surfaces are formed on a substrate, and the information of the original image is partially reflected on each of the reflective surfaces, so that an image of a size that is visible to the user can be incident on the user's eye even by a thin substrate. Here's how.

Such a see-through system, as described above, the light incident on the substrate itself and incident on the user's eye and the light incident on the user's eye through the lens from the outside are incident together. Furthermore, the incident light from the outside is much stronger than the image formed on the lens. Because of this external incident light, it is practically impossible to use the display system in an outdoor environment.

In order to solve this problem, a separate light shielding glasses that block external light on the outer surface of the lens is further required. However, the use of additional shading glasses not only increases the cost of the entire display system, but also makes the display system heavier, looks worse, carry separate shading glasses, and You may have to take off or wear shading glasses.

The present invention is proposed to solve the above problems, and proposes a display system that does not affect weight, does not need to be carried separately, and improves appearance.

In addition, when viewed from the outside, it is possible to design beautifully so as to be indistinguishable from ordinary sunglasses, and propose a display system that is advantageous for popularization.

A display system of the present invention to achieve the above object, the display unit; A substrate transmitting the light incident from the display unit in a captured state; A partial reflecting surface provided on the substrate to reflect the light toward the first surface side of the substrate; And a light blocking member disposed on the second surface side of the substrate opposite to the first surface to block external light passing through the first surface.

The display system of the present invention, the display unit; A substrate transmitting the light incident from the display unit in a captured state; And a partial reflecting surface provided on the substrate to reflect the light toward the first surface side of the substrate, wherein the substrate itself has a low transmittance so that external light is blocked more than the light incident on the display unit. It is characterized by having.

The display system of the present invention, the display unit; A substrate which transmits at least a portion of the light incident from the display unit in a captured state therein; A partial reflecting surface provided on the substrate to reflect the light toward the first surface side of the substrate; And a light shielding film for controlling transmission of external light passing through the substrate, wherein the light shielding film controls transmission of external light by an electric signal or a magnetic signal applied from the outside.

 According to the present invention, the light shielding member can be used in an integrated state with the display system, the price of the display system is reduced, the weight at the time of use is reduced, the appearance is improved, and the portable is easy. Due to this advantage, there is an advantage that the popularity of the display system such as the present invention is promoted.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view of a display system according to the present invention, Figure 2 is a view for explaining the operation of the light transmission inside the substrate in the display system according to the present invention.

1 and 2, the display system of the present invention is provided with a frame 1 provided in the form of glasses and a substrate 3 made of a transparent material mounted on the frame 1. The substrate 3 is provided with respective reflection areas for allowing an image to be incident on each of both eyes of the user, the reflection areas being shown by the left reflection area 5 and the right reflection area 4. Of course, although not described in detail, the reflection areas 4 and 5 are areas for allowing the image reflected by the partial reflection surface 11 provided inside the transparent substrate 3 to be incident on the eyes of the user. Between each of the reflection areas is provided a transmission area 6 for transmitting and transmitting from the right reflection area 4 to the left reflection area 5.

In addition, a display unit 2 is disposed on either side of the substrate 3 to allow incident light 25 containing image information to enter the substrate, so that image information that should be projected by the user's eyes is of course emitted. .

The operation of the display system by such a configuration will be described.

First, incident light 25 emitted from the display unit 2 is incident on the substrate 3, is reflected by the first reflecting surface 10, and is transmitted through the trapped state inside the substrate 3. . A part of the transmitted light is partially reflected by the partial reflection surface 11 provided in the right reflection area 4 and is incident on the user's right eye as the first partial reflection light 22. The light transmitted without being reflected by the right reflective region 4 is incident to the left reflective region 5 through the transmissive region 6 as the transmitted light 24 and then the light of the left reflective region 5. Partially reflected by the partial reflecting surface 11 and incident on the left eye of the user as the second partial reflected light 23, the user perceives the image with both eyes.

In the reflection areas 4 and 5, the technology of reflecting light toward the user's eye and toward the user's eye in front of the substrate in more detail is regarded as applying the specific method provided in Reference 1 above. The description of 1 of the cited reference can be used. Reference numeral 7 is a hinge, which is a portion for allowing the leg portion of the frame 1 to rotate.

On the other hand, since the display system is a see-through system, the light incident on the user's eye is not only the light of the true image reflected by the partial reflecting surface 11, but also the external light passing through the substrate 3. Therefore, if the external light is too intense, it is not preferable because it interferes with recognizing the image.

Under such a background, at least when the display system of the present invention is used as a system for viewing an image, it is necessary to block the external light so that the brightness of the external light is weaker than that of the true image. Furthermore, it should not be necessary for the user to wear a separate shading glasses as in the prior art so that the user can use them conveniently.

Hereinafter, various forms of the light blocking member proposed in the present invention are proposed.

&Lt; Embodiment 1 >

3 shows a display system according to the first embodiment.

Referring to FIG. 3, a light shielding film 20 is adhered to the entire surface of the substrate 3. The external light is shielded to a certain degree by the light blocking film 20 and is incident to the eyes of the user. Thus, not only the true image projected from the display unit 2 and formed on the reflective areas 4 and 5 can be seen, but also external light can be incidentally projected to a certain degree so that it can be used as a see-through display system.

As a method of forming the light shielding film 20, a method of coating a light shielding film of a flexible material, a method of applying a dye coating to the substrate 3, a method of bonding a light shielding frame of a solid material, and optical vacuum deposition The deposition method in a manner may be used.

In detail, the method of coating the light shielding film is to provide a light shielding film 20 by sticking or adhering or directly attaching a light transmitting film having a gray or black color to the entire surface of the substrate 3. In this way, a part of the external light is shielded by the light blocking film to reduce the intensity of the external light incident on the user's eye, and the intensity of the light of the actual image reflected by the partial reflecting surface 11 is relatively stronger than the external light. can do. The thickness of the light shielding film 20 by such a light shielding film is about 0.1 to 0.9 mm, and is light and easy to use because the thickness is thin.

In addition, a method of applying a dye coating on the entire surface of the substrate 3 is to add a dye or pigment having a gray or black color to a transparent resin such as enamel, and to paint the resin on the entire surface of the substrate 3. When the painted dye is hardened it becomes a light shielding film 20 is convenient. However, the method of applying the dye paint should be made uniform in the thickness of the formed light shielding film 20, so that the external light is equally refracted on the entire surface of the substrate.

In addition, the method of attaching the light shielding frame made of a solid material to the substrate 3 is a method of attaching the light shielding frame, which is provided beforehand to the substrate 3, firmly and flatly by means of adhesion or adhesion. In this case, the material of the light blocking frame may be polycarbonate. Such a method may have an advantage of blocking the uneven refraction of the external light source due to its high flatness. In this case, the thickness of the light shielding film reaches 0.3 to 3.0 mm.

In addition, a light shielding film may be formed on the entire surface of the substrate 3 by vacuum deposition. In the evaporation plating method, a metal to be coated on the substrate 3 in a high vacuum state is evaporated, and the evaporation plating is induced to induce the evaporated metal to an appropriate position of the object to be deposited to form a light shielding film on the deposited material. to be. Here, the type of metal for providing the light shielding film is shown in FIG. 4.

When the light shielding film is provided by the vacuum deposition method as described above, there is an advantage that a sufficient external light shielding effect can be obtained with a thin thickness of about 0.1 μm to 0.9 μm. In addition, since the shielded external light is reflected without being absorbed by the light shielding film, the other person recognizes it as sunglasses, so that the image of the product is further improved.

As such, the method of coating the light shielding film 20 on the entire surface of the substrate has the advantage of obtaining a substantial external light shielding effect while having almost no weight, but has a disadvantage of requiring a separate coating process. The color of the light shielding film 20 is preferably black or gray in order to allow external light transmission to be uniform for a wavelength band of various colors.

&Lt; Embodiment 2 >

A second embodiment of the present invention proposes a method for overcoming the disadvantage that a process of coating a light shielding film later is added.

5 shows a display system according to a second embodiment of the invention.

Referring to FIG. 5, the light transmittance of the substrate 30 is controlled. In detail, when the material of the substrate 30 is a resin, when manufacturing the substrate 30 using the liquid resin, a pigment may be added to prepare a substrate having a corresponding color, and after the resin is prepared, a diffusion agent may be used. The substrate 30 may be manufactured by absorbing it. When the material of the substrate is glass, a color may be realized by adding various inorganic substances having a specific color in manufacturing the glass. In this case, the transmittance of the substrate 30 is lowered and external light is blocked to a certain degree.

At this time, the color of the substrate 30 is preferably gray or transparent black. When external light is blocked by the substrate in this manner, the image reflected by the partial reflecting surface 11 is also shielded to a certain degree. However, since more shielding against external light occurs, what the user actually feels only recognizes the shielding effect of the external light. To this end, the transmittance of the substrate 30 is preferably at least half.

Since the light shielding members of the first and second embodiments as proposed are integrally provided on the substrate, the user does not need to carry it separately, and is provided in the same form as the substrate, so that the appearance is improved and the weight is almost zero. It is easy to use. However, there is a disadvantage in that the user cannot adjust the shielding degree of external light.

Third Embodiment

In a third embodiment of the present invention, a method for allowing a user to selectively adjust a degree of shielding of external light is provided.

6 is a perspective view of a display system according to a third embodiment of the present invention.

Referring to FIG. 6, other portions are the same as those of the first embodiment, and an LCD module 40 is added to an outer surface of the substrate 3, and an electric wire 41 for applying external power to the LCD module 40. ) Is connected.

7 is a cross-sectional view of the LCD module, wherein the LCD module 41 is provided with a first electrode 42 and a second electrode 44 with a liquid crystal layer 43 interposed therebetween. In addition, a polarizer 45 is further provided on an outer surface of the first electrode 42.

Therefore, when using a display system, power is supplied to the wires 41 so that power is applied to the electrodes 42 and 44. In this case, an electric field is generated between the electrodes 42 and 44, and the liquid crystal inside the liquid crystal side 43 is aligned in a direction in which light is blocked by the electric field, so that external light is emitted from the LCD module 41. Will not pass).

This embodiment has the advantage of adjusting the shading degree of light. That is, the degree of alignment of the liquid crystal is controlled by the power supplied to the electrodes 42 and 44 to control the degree of light transmission.

In this case, the user may allow external light to be shielded by the LCD module 41 when using the display system, and allow external light to pass through when the display system is not used. In addition, since the shielding degree of the external light can be continuously adjusted, when the external illumination is high, the external light may be shielded a lot, and when the external illumination is low, the external light may be shielded small. Then, the user can further increase the utilization of the see-through method. In other words, it is possible to obtain an appropriate combination of the intensity of the external light and the light of the image in accordance with the state of the external light. Of course, the transmittance of the external light can also be adjusted according to the user's preference.

Meanwhile, the LCD module 41 may be linked with the display system so that the operation of the LCD module 41 may be automatically started when the display system starts to operate. In this case, the convenience of the user may be improved.

The LCD module 41 is merely an example in which external light is blocked by an external power source, or the amount of light incident or projected is adjusted. For example, a dipole material having a polarity, such as a liquid crystal, is provided on the substrate 3 and the substrate 3 of external light is applied by the alignment of the dipole material by applying an electrical signal or a magnetic signal to the dipole material. Any manner of blocking transmission can be applied to this embodiment. In this case, an operation of the display system may be started and an electric signal or a magnetic signal may be applied to the dipole material, thereby allowing the user to conveniently use the display system. Of course, in this case, the degree of transmission of external light may be quantitatively adjusted by adjusting the intensity of an electrical signal or a magnetic signal.

The third embodiment has a disadvantage in that an external power source must be applied despite this advantage.

<Fourth Embodiment>

The fourth embodiment of the present invention proposes a display system in which the projection degree of external light is conveniently adjusted without an external power source being applied, thereby making it easy to view an image.

8 is a perspective view of a display system according to a fourth embodiment of the present invention.

Referring to FIG. 8, the first polarizing plate 51 is primarily placed on the front surface of the substrate 3. In addition, a second polarizing plate 55 is placed in front of the first polarizing plate 51.

The second polarizer 55 is supported in a rotatable manner. Specifically, a case 52 having an empty internal space is placed in an aspect fixed to the substrate 3, and a groove 54 is formed at an edge of the case 52, so that the outside of the groove 54 is formed. The furnace has a handle 53 connected to the second polarizer 55.

The user adjusts the alignment direction of the first polarizing plate 51 and the second polarizing plate 55 while holding the handle 53 and rotating the second polarizing plate 55 along the direction in which the groove 54 is formed. Here, as the alignment direction of the pair of polarizing plates 51 and 55 is adjusted, it is natural that the degree of blocking of external light is adjusted. As a result, when it is desired to completely block external light, the axes of the polarizing plates 51 and 55 may be crossed by 90 degrees, and when only a predetermined degree of external light is blocked, the axes of the polarizing plates may be parallel to each other. Of course, since the degree of blocking of external light is continuously adjusted by adjusting the axis of the polarizing plate, the user has an advantage of precisely adjusting the degree of blocking or projection of external light desired by the user.

FIG. 9 graphically shows that the degree of transmission of external light is controlled by the pair of polarizing plates. For example, when the axis of the polarizing plate is 45 degrees it can be seen that the transmittance of the external light is reduced to 50% compared to when parallel.

Through the above description it can be seen that the technical idea that the present invention seeks to conveniently block the external light without the need to carry a separate external light shielding structure. Various modifications can be made within this range. For example, in the embodiment of the present invention, it is described that the external light is blocked by the light shielding film as a whole, but is not limited thereto. For example, a light shielding film may be formed only at the positions where the reflective areas 4 and 5 are placed so that external light is blocked. However, it is naturally predictable that the light shielding film is formed on the substrate as a whole, thereby improving the design and reducing the manufacturing cost when viewed from the outside.

The present invention may further have other possible embodiments included within the scope of the same idea, and any one embodiment included in the configuration of the present invention may be easily added to another embodiment by adding, changing, deleting, and adding components. It may be changed, but it will also be included in the spirit of the present invention. In addition, although the configuration of one embodiment is included in the configuration of another embodiment and another embodiment can be easily proposed, this will also be included in the spirit of the present invention.

According to the present invention, there is an advantage that the user does not need to carry the light blocking member separately without being influenced by the weight that the user feels weighted by the light shielding glasses while using the display system, and the appearance is improved. In addition, when viewed from the outside, it is possible to design beautifully so as to be indistinguishable from ordinary sunglasses, which is advantageous to popularization.

Claims (11)

A display unit; A substrate transmitting the light incident from the display unit in a captured state; A partial reflecting surface provided on the substrate to reflect the light toward the first surface side of the substrate; And A light blocking member disposed on a second surface side of the substrate opposite to the first surface to block external light passing through the first surface, Wherein: A left reflection area and a right reflection area for allowing an image to be incident on each of both eyes of a user, And a transmission area for transmitting an image from one of the right reflection area or the left reflection area to another. The method of claim 1, And the light blocking member is a light blocking film in contact with the second surface. The method of claim 2, The light shielding film is a light shielding film. The method of claim 2, The light shielding film is formed by being solidified after the dye coating is applied. The method of claim 2, The light shielding film is a rigid frame made of polycarbonate. The method of claim 2, The light shielding film is a metal film formed by vacuum deposition. The method of claim 1, And the light blocking member is an LCD module placed on the second surface. The method of claim 7, wherein And the LCD module automatically starts operation when the display unit is operated. The method of claim 1, The light blocking member is a display system, wherein at least one polarizer is two polarizers that are rotatably mounted with respect to the other polarizer. A display unit; A substrate transmitting the light incident from the display unit in a captured state; A partial reflecting surface provided on the substrate to reflect the light toward the first surface side of the substrate, Wherein: A left reflection area and a right reflection area for allowing an image to be incident on each of both eyes of a user, A transmissive region for transmitting an image from one of the right reflective region or the left reflective region to another and transmitting the image; And has a low transmittance by itself so that external light is blocked more than the light incident on the display unit. A display unit; A substrate which transmits at least a portion of the light incident from the display unit in a captured state therein; A partial reflecting surface provided on the substrate to reflect the light toward the first surface side of the substrate; And It includes a light shielding film for controlling the transmission of external light passing through the substrate, Wherein: A left reflection area and a right reflection area for allowing an image to be incident on each of both eyes of a user, A transmissive region for transmitting an image from one of the right reflective region or the left reflective region to another and transmitting the image; The light blocking film is a display system for controlling the transmission of external light by an electrical signal or a magnetic signal applied from the outside.

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