JP2013054141A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device by which, even when the positions of observer's eyes vertically move against a light guide, the observer can visually confirm the virtual image of an observation object normally.SOLUTION: A display device 1 includes emission mechanisms 21 and 22 and a light guide 3. The emission mechanisms 21 and 22 include a first emission mechanism 21 and a second emission mechanism 22 that are vertically arranged. The first emission mechanism 21 emits image display light at least including a first part and a vertically corrected first part. Alternatively, the second emission mechanism 22 emits image display light at least including a third part and a vertically corrected third part. The light guide 3 at least either makes image display light to be a vertically corrected first part from the first emission mechanism 21 reflect once or more on a first face 33c or makes image display light to be a vertically corrected third part from the second emission mechanism 22 reflect once or more on a second face 33d. Thus the image display light is guided to observer's eyes.

Description

  The present invention relates to an information device that can be used in an environment other than a desktop, such as a wearable computer that is worn on the body via a waist belt or a jewelry, or a communication device such as a mobile phone that can be carried in a knapsack or a pocket. The present invention relates to a display device suitable for a monitor.

As display devices for information devices that are worn on the body, eyeglass-type forms are becoming mainstream. FIG. 9 is an external view showing a glasses-type display (display device) worn by an observer, FIG. 10 is an optical path diagram in the XY plane showing a schematic configuration of a conventional glasses-type display, and FIG. It is sectional drawing of the DD line shown in FIG. 10, FIG. 12 is sectional drawing of the EE line and FF line shown in FIG. FIG. 13A is a virtual image of the observation target visually recognized by the observer, and FIG. 13B is an image displayed on the transmissive liquid crystal display.
The eyeglass-type display 151 is for the right eye and defines an XYZ coordinate system having an origin at the center of the right eye E in a state of looking far away. The Y direction (forward direction) is in front of the observer, the Z direction is above the observer, and the X direction (setting direction) is to the left of the observer.

  The eyeglass-type display 151 has an appearance similar to that of eyeglasses, and guides it to the observer's eye E while internally reflecting the image display light L from the unit portion U that emits the image display light L and the unit portion U. The light guide 173 which is a board | substrate, and the flame | frame part F to which the unit part U and the light guide 173 are attached are provided (for example, refer patent document 1).

The unit unit U includes an emission mechanism 161 having a light source (not shown), a transmissive liquid crystal display (display element) 171, and an optical system 172, and an emission mechanism 161 for visually recognizing the virtual image shown in FIG. And a display control unit 174 for outputting an image signal.
The transmissive liquid crystal display 171 forms the image shown in FIG. 13B on the surface (display region) perpendicular to the emission direction based on the image signal from the display control unit 174, and the image display light L Is emitted. Note that the image shown in FIG. 13B is a horizontally inverted image of the virtual image shown in FIG. 13A because the image is horizontally reversed by the light guide 173 and the optical system 172.
The optical system 172 is an optical element that forms a virtual image of the entire display area of the transmissive liquid crystal display 171 (image shown in FIG. 13B).

The light guide 173 has a flat plate shape made of polycarbonate (refractive index ng), is formed at one end portion and is disposed in front of the emission mechanism 161, and is formed at the other end portion and in front of the observer's eye E. And the side surface group 183 formed between the total reflection surface 181 and the emission surface 182 by the interface with air. The exit surface 182 has a beam splitting function that reflects and transmits incident light.
The side group 183 has a quadrangular shape when viewed from the X direction, the first surface 183c, the second surface 183d facing the first surface 183c in the −Z direction, the third surface 183a, the third surface 183a, and the Y And a fourth surface 183b facing in the direction.

  In such a glasses-type display 151, first, the emission mechanism 161 emits image display light L, which is an image shown in FIG. 13B, in the Y direction. The total reflection surface 181 of the light guide 173 reflects the image display light L in the entire display area from the emission mechanism 161 in a substantially X direction. The third surface 183a and the fourth surface 183b guide the image display light L in the entire display area to the beam splitter surface (exit surface) 182 while alternately reflecting the image display light L a plurality of times. At this time, the first surface 183c and the second surface 183d do not reflect the image display light L even once. Finally, the beam splitter surface 182 reflects the image display light L in the entire range of the display area, thereby emitting the image display light L in the entire range of the display area to the outside of the light guide 173. As a result, the image display light L emitted from the emission mechanism 161 is guided to the observer's eye E through the light guide 173.

Special table 2003-536102 gazette

  However, in such a glasses-type display 151, the first surface 183c and the second surface 183d must guide the image display light L from the total reflection surface 181 to the beam splitter surface 182 without reflecting the image display light L once. Therefore, there is a problem that the distance between the first surface 183c and the second surface 183d cannot be reduced, and the light guide 173 and the optical system 172 are enlarged and heavy.

  In order to solve this problem, the present applicant has conceived and applied for a display device capable of reducing the size and weight of the light guide and the optical system. 14 is an optical path diagram in the XY plane showing a schematic configuration of the eyeglass-type display, FIG. 15 is a sectional view taken along line GG shown in FIG. 14, and FIG. 16 is a line HH shown in FIG. It is sectional drawing of an II line. FIG. 17A is a virtual image of the observation target visually recognized by the observer, and FIG. 17B is an image displayed on the transmissive liquid crystal display. In addition, the same code | symbol is attached | subjected about the thing similar to the spectacles type display 151 mentioned above.

The light guide 3 has a flat plate shape made of polycarbonate (refractive index ng), is formed at one end portion and is disposed in front of the emission mechanism 121, and is formed at the other end portion in front of the observer's eye E. And a side group 33 formed between the total reflection surface 31 and the emission surface 32 by an interface with air. The exit surface 32 has a beam splitting function that reflects and transmits incident light.
The side group 33 has a quadrangular shape when viewed from the X direction, the first surface 33c, the second surface 33d facing the first surface 33c in the -Z direction, the third surface 33a, the third surface 33a, and the Y surface. And a fourth surface 33b facing in the direction. At this time, the distance between the first surface 33c and the second surface 33d in the light guide 3 is smaller than the distance between the first surface 183c and the second surface 183d in the light guide 173.

  The transmissive liquid crystal display 111 forms the image shown in FIG. 17B on the surface (display area) perpendicular to the emission direction based on the image signal from the display control unit 104, and the image display light L Is emitted. In the image shown in FIG. 17B, the virtual image shown in FIG. 17A is divided into a first part A, a second part B, and a third part C from the top in this order, and the third part is turned upside down ( The third portion C ′ that has been vertically corrected), the second portion B, and the first portion A ′ that has been vertically inverted (vertically corrected) are arranged in this order from the top and horizontally reversed.

  According to such a glasses-type display 101, first, the emission mechanism 121 emits the image display light L that becomes the image shown in FIG. 17B in the Y direction. The total reflection surface 31 of the light guide 3 reflects the image display light L in the entire range A ′, B, C ′ of the display area from the emission mechanism 121 in the substantially X direction. The third surface 33a and the fourth surface 33b guide the image display light L in the entire range A ′, B, C ′ of the display region to the beam splitter surface (exit surface) 32 while alternately reflecting the image display light L a plurality of times. . At this time, the image display light L of the display area C ′ that is the third part that is vertically inverted by the first surface 33c is reflected once, and the image display of the display area A ′ that is the first part that is vertically inverted by the second surface 33d. The light L is reflected once and guided to the beam splitter surface 32 without being reflected once by the first surface 33c and the second surface 33d without reflecting the image display light L in the display area B which is the second portion. Finally, the beam splitter surface 32 is a display area composed of a first portion A ′ that is inverted upside down reflected by the second surface 33d, a second portion B that is reflected upside down, and a third portion C ′ that is inverted upside down reflected by the first surface 33c. By reflecting the image display light L, the image display light L in the display area composed of the first part A, the second part B, and the third part C is emitted outside the light guide 3. Accordingly, the image display light L emitted from the emission mechanism 121 is guided to the observer's eye E via the light guide 3.

However, since the eyeglass-type display 101 is designed such that the position of the observer's eye E does not move much in the vertical direction with respect to the light guide 3, the position of the observer's eye E is the light guide 3. On the other hand, when moving in the upward or downward direction, images that are different display region portions may appear to overlap depending on the position of the eye E of the observer. For example, a part of the third portion C ′ that is reflected once by the first surface 33c and led to the beam splitter surface 32 is not reflected once by the first surface 33c and the second surface 33d, and the beam splitter surface 32 is reflected. It was sometimes led to. Further, a part of the second portion B that is desired to be guided to the beam splitter surface 32 without being reflected once by the first surface 33c and the second surface 33d is reflected once by the first surface 33c, and then the beam splitter surface 32. It was sometimes led to.
Here, FIG. 18 is an optical path diagram when the position of the eye E of the observer moves slightly downward with respect to the light guide 3, and FIG. 19A is a virtual image of the observation target visually recognized by the observer. FIG. 19B shows an image displayed on the transmissive liquid crystal display. The portion that is desired to be guided to the beam splitter surface 32 without being reflected once by the first surface 33c and the second surface 33d is the second portion B, but the portion B is 1 by the first surface 33c and the second surface 33d. The light is guided to the beam splitter surface 32 without being repeatedly reflected. That is, there is a difference between the second part B and the part B.
FIG. 20 is an optical path diagram when the position of the eye E of the observer moves downward with respect to the light guide 3, and FIG. 21A is a virtual image of the observation target visually recognized by the observer. FIG. 21B shows an image displayed on the transmissive liquid crystal display. The portion that is desired to be guided to the beam splitter surface 32 without being reflected once by the first surface 33c and the second surface 33d is the second portion B, but the portion B is 1 by the first surface 33c and the second surface 33d. The light is guided to the beam splitter surface 32 without being repeatedly reflected. That is, there is a difference between the second part B and the part B.
Therefore, the present applicant examined a method by which the observer can normally visually recognize the virtual image to be observed even if the position of the observer's eye E moves in the vertical direction with respect to the light guide. When the one divided into the first part A, the second part B, and the third part C is displayed on one transmissive liquid crystal display 111, the position of the eye E of the observer is relative to the light guide 3. When moving upward or downward, the second part B and the part B are displaced. Therefore, instead of the single transmissive liquid crystal display 111, the first emission mechanism and the second emission mechanism arranged in the vertical direction are used. Then, the upper and middle images (first portion A and second portion B) are displayed on the first emission mechanism, and the lower and middle images (second portion B and third portion) are displayed on the second emission mechanism. C) is to be displayed. In other words, it has been found that the second part B common to the first emission mechanism and the second emission mechanism is displayed so that there is no problem even if it is shifted.

  That is, the display device of the present invention includes an emission mechanism that emits image display light of a display region that includes a first portion, a second portion, and a third portion that are divided in the vertical direction, a first surface, and the first surface. And a second surface opposed in the up-down direction, a third surface, and a fourth surface opposed to the third surface in the front-rear direction, and the third surface and the fourth surface display an image from the emission mechanism A light guide that guides light to an observer's eye while reflecting light in a vertical direction and a setting direction perpendicular to the front-rear direction, wherein the emission mechanism includes a first emission mechanism and a first light guide arranged in the vertical direction The first emission mechanism emits image display light of a display area composed of the first part, the second part, and the first part corrected up and down, or the second emission mechanism , The image of the display area consisting of the third part, the second part, and the third part corrected vertically The light guide emits display light, and the light guide reflects the image display light which is the first portion corrected from the first emission mechanism on the first surface one or more times, or the second surface emits the second light on the second surface. At least one of reflecting the image display light, which is the third part corrected vertically from the mechanism, is performed at least one time, and the image display light is guided to the eyes of the observer.

Here, the “setting direction” is an arbitrary direction predetermined by a designer or the like, and is, for example, the left side of the observer or the right side of the observer. Further, the present invention includes a case where the vertical direction is used horizontally so as to coincide with the horizontal direction.
“Up / down correction” is determined by the reflection direction and the number of reflections on the first and second surfaces before being guided to the observer's eyes, and the image to be displayed on a display element such as a display is turned upside down. It means doing.

The display device of the present invention has a first emission mechanism and a second emission mechanism arranged in the vertical direction. For example, the first emission mechanism emits image display light including a first part, a second part, and a first part that has been vertically corrected. The second emission mechanism emits image display light including the second part and the third part. As a result, when the position of the eye E of the observer is above the origin with respect to the light guide, the image display light that is a part of the first part that is vertically corrected and reflected by the first surface is guided to the eye of the observer. The image display light consisting of a part of the first part and the second part that are not reflected by the first surface and the second surface, and the second part and the third part from the second emission mechanism is applied to the observer's eyes. Led. Thereby, an observer visually recognizes an image composed of the first part, the second part, and the third part.
Further, when the position of the eye E of the observer is below the origin with respect to the light guide, the first part and the second part that are not reflected by the first surface and the second surface, and the second part from the second emission mechanism. The image display light composed of the part and the third part is guided to the eyes of the observer. Thereby, an observer visually recognizes an image composed of the first part, the second part, and the third part.

  As described above, according to the display device of the present invention, even when the position of the observer's eye E moves with respect to the light guide, the observer can normally visually recognize the virtual image of the observation target.

(Means and effects for solving other problems)
Further, in the above invention, the first emission mechanism includes a first display element that forms an image of a display area including the first part, the second part, and the first part corrected vertically, and emits image display light. A first optical system that reflects or transmits the image display light and guides the image display light to the light guide, and the second emission mechanism includes a display area composed of a third part, a second part, and a third part that have been vertically corrected. A second display element that emits image display light and a second optical system that reflects or transmits the image display light and guides it to the light guide.

And in said invention, said 1st radiation | emission mechanism and said 2nd radiation | emission mechanism consist of said 1st part, 2nd part, 1st part corrected up and down, 3rd part corrected up and down, 2nd part, and 3rd part. The display area is formed by forming an image of the display area and emitting image display light, and reflecting or transmitting the image display light of the display area including the first portion, the second portion, and the first portion corrected vertically A first optical system that guides the light to the guide; and a second optical system that reflects or transmits image display light in a display area including the third part, the second part, and the third part that are vertically corrected and guides the light to the light guide. You may do it.
Further, in the above invention, the light guide may have a flat plate shape, and the first surface, the second surface, the third surface, and the fourth surface may be formed by an interface with air.

The optical path figure in XY plane which shows schematic structure of the spectacles type display which is one Embodiment of this invention. Sectional drawing of the AA line shown in FIG. Sectional drawing of the BB line and CC line shown in FIG. A virtual image of an observation object visually recognized by an observer and an image displayed on a transmissive liquid crystal display. The optical path figure of the spectacles type display which is one Embodiment of this invention. A virtual image of an observation object visually recognized by an observer and an image displayed on a transmissive liquid crystal display. The optical path figure of the spectacles type display which is one Embodiment of this invention. A virtual image of an observation object visually recognized by an observer and an image displayed on a transmissive liquid crystal display. The external view which shows the spectacles type display with which an observer is mounted | worn. The optical path figure in XY plane which shows schematic structure of the conventional spectacles type display. Sectional drawing of the DD line shown in FIG. Sectional drawing of the EE line and FF line shown in FIG. A virtual image of an observation object visually recognized by an observer and an image displayed on a transmissive liquid crystal display. The optical path figure in XY plane which shows schematic structure of a spectacles type display. Sectional drawing of the GG line shown in FIG. Sectional drawing of the HH line | wire and II line | wire shown in FIG. A virtual image of an observation object visually recognized by an observer and an image displayed on a transmissive liquid crystal display. The optical path figure of the spectacles type display shown in FIG. A virtual image of an observation object visually recognized by an observer and an image displayed on a transmissive liquid crystal display. The optical path figure of the spectacles type display shown in FIG. A virtual image of an observation object visually recognized by an observer and an image displayed on a transmissive liquid crystal display.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments described below, and it goes without saying that various aspects are included without departing from the spirit of the present invention.

  FIG. 1 is an optical path diagram in the XY plane showing a schematic configuration of a glasses-type display (display device) according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA shown in FIG. FIG. 3 is a cross-sectional view taken along line BB and line CC shown in FIG. 4A is a virtual image of the observation target visually recognized by the observer, and FIG. 4B is an image displayed on the first transmissive liquid crystal display (first display element). (C) is an image displayed on the second transmissive liquid crystal display (second display element). In addition, the same code | symbol is attached | subjected about the thing similar to the spectacles type display 101 mentioned above.

The eyeglass-type display 1 has an appearance similar to that of eyeglasses, and guides it to an observer's eye E while internally reflecting the image display light L from the unit portion U that emits the image display light L and the unit portion U. The light guide 3 which is a board | substrate, and the flame | frame part F to which the unit part U and the light guide 3 are attached are provided.
The unit unit U includes the first emission mechanism 21, the second emission mechanism 22 disposed below the first emission mechanism 21, and the first emission mechanism 21 and the first emission mechanism 21 in order to visually recognize the virtual image illustrated in FIG. And a display control unit 4 that outputs an image signal to the dual emission mechanism 22.

The first emission mechanism 21 includes a first light source (not shown), a first transmissive liquid crystal display (first display element) 211, and a first optical system 212.
Based on the image signal from the display control unit 4, the first transmissive liquid crystal display 211 displays an image (shown in FIG. 4A) on a surface (display area) perpendicular to the emission direction. The first part A and the second part B) of the virtual image shown are formed, and the image display light L is emitted. Note that the image shown in FIG. 4B is obtained by dividing the virtual image shown in FIG. 4A into a first part A, a second part B, and a third part C in this order from the top. The part B and the first part A ′ obtained by flipping the first part upside down (upward and downward correction) are arranged in this order from the top and reversed left and right.
The first optical system 212 is an optical element that transmits the image display light L in the entire range of the display area of the first transmissive liquid crystal display 211 (image shown in FIG. 4B).

The second emission mechanism 22 includes a second light source (not shown), a second transmissive liquid crystal display (second display element) 221 and a second optical system 222.
Based on the image signal from the display control unit 4, the second transmissive liquid crystal display 221 has an image shown in FIG. 4C (shown in FIG. 4A) on a surface (display area) perpendicular to the emission direction. The second part B and the third part C) of the virtual image shown are formed, and the image display light L is emitted. The image shown in FIG. 4C is obtained by dividing the virtual image shown in FIG. 4A into a first part A, a second part B, and a third part C in this order from above, and the third part is turned upside down ( The third part C ′, the second part B, and the third part C that have been vertically corrected) are arranged in this order from the top and reversed left and right.
The second optical system 222 is an optical element that transmits the image display light L in the entire range of the display area of the second transmissive liquid crystal display 221 (image shown in FIG. 4C).

The display control unit 4 performs control so that an image signal is output to the first transmissive liquid crystal display 211 and the second transmissive liquid crystal display 221 in order to make the virtual image visible. Specifically, in the first transmission type liquid crystal display 211, the image corresponding to the first part A and the second part B is inverted only in the X direction that is not reflected by the first surface 33c and the second surface 33d. Image signals corresponding to the first part A and the second part B are output, and the image signal corresponding to the first part A ′ inverted in the Z direction and inverted in the X direction to be reflected once by the first surface 33c. Is output. Further, the second transmissive liquid crystal display 221 has a second image that is inverted only in the X direction that is not reflected by the first surface 33c and the second surface 33d as images corresponding to the second portion B and the third portion C. The image signal corresponding to the part B and the third part C is output, and the image signal corresponding to the third part C ′ inverted in the Z direction and inverted in the X direction to be reflected once by the second surface 33d. Is output. As a result, the observer can visually recognize a virtual image of the observation target as shown in FIG.
Depending on the reflection direction and the number of reflections of light rays in the light guide 3 and the first optical system 212 or the second optical system 222, the entire X direction may be reversed, or the entire Z direction (vertical direction) may be reversed. There is also.

According to such a glasses-type display 1, first, the first emission mechanism 21 emits the image display light L, which is the image shown in FIG. 4B, in the Y direction, and the second emission mechanism 22 The image display light L that is the image shown in 4 (c) is emitted in the Y direction. The total reflection surface 31 of the light guide 3 reflects the image display light L in the entire display area from the first emission mechanism 21 in a substantially X direction. The third surface 33a and the fourth surface 33b guide the image display light L in the entire display area from the first emission mechanism 21 to the beam splitter surface 32 while alternately reflecting the image display light L a plurality of times. At this time, the image display light L in the display area A ′ which is the first part upside down on the first surface 33c is reflected once, and the first part A and the second part B are reflected by the first surface 33c and the second surface 33d. The image display light L in the display area is guided to the beam splitter surface 32 without being reflected once.
The total reflection surface 31 of the light guide 3 reflects the image display light L in the entire display area from the second emission mechanism 22 in the substantially X direction. The third surface 33a and the fourth surface 33b guide the image display light L in the entire display area from the second emission mechanism 22 to the beam splitter surface 32 while alternately reflecting the image display light L a plurality of times. At this time, the image display light L in the display area that becomes the third portion C ′ that is vertically inverted by the second surface 33d is reflected once, and the second portion B and the third portion are reflected by the first surface 33c and the second surface 33d. The image display light L in the display area C is guided to the beam splitter surface 32 without being reflected once.

Finally, the beam splitter surface 32 has a display area composed of a first part A, a second part B, a vertically corrected first part A ′, a vertically corrected third part C ′, a second part B, and a third part C. By reflecting the image display light L, the first part A, the second part B, the first part A ′ corrected up and down, the third part C ′ corrected up and down, the second part B and the third part outside the light guide 3. The image display light L in the display area including the portion C is emitted.
Here, when the observer's eye E exists in the vicinity of the origin with respect to the light guide 3, a part of the first part A ′ corrected vertically and a part of the first part A and a part of the second part B. The image display light L in the display area composed of the portion B, a portion of the second portion B and a portion of the third portion C, and a portion of the third portion C ′ that has been vertically corrected is a light guide. 3 to the observer's eye E. 2 is an optical path diagram on the XY plane of the eyeglass-type display shown in FIG. 1 when the position of the eye E of the observer is near the origin with respect to the light guide 3, and FIG. 4 (b) is an image displayed on the first transmissive liquid crystal display, and FIG. 4 (c) is an image displayed on the second transmissive liquid crystal display. is there.
Further, when the observer's eye E is slightly below the origin with respect to the light guide 3, a part of the first part A ′ corrected vertically, a part of the first part A, and a part of the second part B The image display light L in the display area consisting of the part B, part of the second part B and part of the third part C, and part of the third part C ′ corrected vertically is It is guided to the observer's eye E through the guide 3. 5 is an optical path diagram of the eyeglass-type display shown in FIG. 1 when the position of the observer's eye E moves slightly downward with respect to the light guide 3, and FIG. 6 (a) is visually recognized by the observer. 6B is an image displayed on the first transmissive liquid crystal display, and FIG. 6C is an image displayed on the second transmissive liquid crystal display.
Furthermore, when the observer's eye E exists below the origin with respect to the light guide 3, a part B of the first part A and the second part B, a part of the second part B, and a third part C The image display light L in the display area consisting of a part C of the above and a part D of the third part C ′ corrected vertically is guided to the observer's eye E through the light guide 3. 7 is an optical path diagram of the eyeglass-type display shown in FIG. 1 when the position of the eye E of the observer moves downward with respect to the light guide 3, and FIG. 8A is visually recognized by the observer. FIG. 8B is an image displayed on the first transmissive liquid crystal display, and FIG. 8C is an image displayed on the second transmissive liquid crystal display.
When the observer's eye E exists above the origin with respect to the light guide 3, the image display light in the display area composed of the first part A ′, the second part B, and the third part C corrected vertically. L is guided to the observer's eye E through the light guide 3.

  As described above, according to the glasses-type display 1, even when the position of the observer's eye E moves in the vertical direction with respect to the light guide 3, the observer can normally visually recognize the virtual image to be observed.

(Other embodiments)
The above-described glasses-type display is mounted on the body of an observer's head and arms, a helmet or glasses worn on the body via a headset, a belt, a band, a clip, or the like, or a mobile phone or a wristwatch. It may be attached to various portable devices such as or may be used while being held in the hand. Moreover, it is not limited to a form such as a head-mounted display attached to the observer, but may be a form such as a head-up display installed in front of the observer.

Further, as the display element, a self-luminous display that directly emits image display light may be used, or it may be composed of a reflective display and an element for illuminating the reflective display. Good.
Further, the image display light may be guided to both eyes of the observer, the beam splitter surface may be constituted by a total reflection mirror, and the emission surface and the total reflection surface may be constituted by a hologram surface. The exit surface may be constituted by a plurality of exit surfaces.

Further, the first surface and the second surface may reflect the image display light of a part of the display area once, may reflect the image display light of a part of the display area twice, A part of the image display light may be reflected three times or more.
In the eyeglass-type display 1 described above, the first emission mechanism 21 includes the first transmissive liquid crystal display 211 and the second emission mechanism 22 includes the second transmissive liquid crystal display 221. The emission mechanism and the second emission mechanism may have a common display element.
Examples of the material for forming the light guide include polycarbonate, polymethacrylic acid (PMMA), cycloolefin, and glass material.

  The present invention can be used for information equipment and the like used in an environment other than the desktop.

1. Glasses type display (display device)
3 light guide 21 first emission mechanism 22 second emission mechanism 4 display control unit 33a third surface 33b fourth surface 33c first surface 33d second surface L image display light E observer's eye U unit unit

Claims (4)

An emission mechanism that emits image display light in a display area composed of a first part, a second part, and a third part divided in the vertical direction;
A first surface; a second surface facing the first surface in the up-down direction; a third surface; and a fourth surface facing the third surface in the front-rear direction. A display device including a light guide that reflects image display light from the emission mechanism on the surface in a vertical direction and a setting direction perpendicular to the front-rear direction and guides the light to an observer's eyes,
The emission mechanism has a first emission mechanism and a second emission mechanism arranged in the vertical direction,
The first emission mechanism emits image display light of a display area composed of the first part, the second part, and the first part corrected up and down, or the second emission mechanism includes the third part corrected up and down The image display light of the display area consisting of the second part and the third part is emitted
The light guide reflects the image display light which is the first portion corrected from the first emission mechanism on the first surface one or more times, or the vertical correction from the second emission mechanism on the second surface is corrected. A display device characterized in that the image display light serving as the third part is reflected at least one time or more to guide the image display light to the eyes of an observer. The first emission mechanism forms an image of a display area including the first part, the second part, and the first part corrected up and down, and reflects the image display light. Or a first optical system that transmits and guides to the light guide,
The second emission mechanism forms an image of a display area composed of a third part, a second part, and a third part that have been vertically corrected, and emits image display light; and the image display light The display device according to claim 1, further comprising a second optical system that reflects or transmits the light to the light guide.   The first emission mechanism and the second emission mechanism form an image of a display area including the first part, the second part, the first part corrected up and down, the third part corrected up and down, the second part, and the third part. And a first optical system that reflects or transmits image display light in a display region that includes the display element that emits image display light and the first portion, the second portion, and the first portion that has been vertically corrected, and guides the light to the light guide. And a second optical system that reflects or transmits image display light in a display area composed of the third part, the second part, and the third part that have been vertically corrected and guides them to the light guide. The display device according to 1. The light guide has a flat plate shape,
The display device according to claim 1, wherein the first surface, the second surface, the third surface, and the fourth surface are formed by an interface with air.

Images