TW201730629A - Displaying apparatus and displaying method of aerial image - Google Patents

Abstract

A displaying apparatus (1A) according to the present invention includes a first light source (S1), a first retroreflecting part (2) provided at a position on an emission direction (E1) of a first light (L1) emitted from the first light source (S1), and a first light separating part (4) that reflects a part of the first light (L1) which passes through the first retroreflecting part (2) as a first reflected light (L2) and transmits at least a part of the first reflected light (L2).

Description

Display device and display method of aerial image

The present invention relates to a display device and a display method of an aerial image. This application claims priority based on Japanese Patent Application No. 2015-238993 filed on Dec. 7, 2015 in Japan, and Japanese Patent Application No. 2016-170376, filed on Jan. 31, 2016 in Japan. Its content.

In recent years, in the field of communication, communication, entertainment, art, medical treatment, etc., the use of the environment and/or space enables the display of aerial display technology that can be viewed in a three-dimensional space without wearing special glasses. The public is eye-catching. As described above, one of the methods of displaying an image in a three-dimensional space is known as Aerial Imaging by Retro-Reflection (AIRR) (for example, refer to Non-Patent Document 1).

The display device 101 shown in FIG. 53 is an example of a configuration of an AIRR. The display device 101 includes a light source S, a half mirror 104, and a return reflection unit 106 which are provided on the display D1 and the like. Among the light beams L1 emitted from the light source S, a part of the light ray L101 is reflected by the half mirror 104 as the reflected light L102. Reflected light L102 is incident on the complex The returning reflection portion 106 is reflected by the returning reflection portion 106 to the same direction as the incident direction, and the reflected light L103 is incident on the half mirror 104, and the half mirror 104 is transmitted, and is symmetric with respect to the plane of the display D1 with respect to the half mirror 104. The position Q1 of (plane symmetry) forms an aerial image I. The user views the aerial image I displayed in the space A (that is, the space existing to the user of the half mirror 104) from the observation direction E0 opposite to the half mirror 104 and the light source S. Here, the aerial image I that the user can observe is limited to the range in which the reset reflection portion 106 is viewed by the half mirror 104 from the viewpoint position of the user. Even if the aerial image I is formed, the user can observe only the aerial image I within the above range, that is, only the aerial image I in the region ZI shown in Fig. 53 can be observed.

Further, Patent Document 1 discloses an example of a configuration in which a display device is provided with a beam splitting device placed on a light path from an object (light source) and placed on a beam splitting. A means of re-reflection of the light path from the object that the device transmits or reflects. In the display device described in Patent Document 1, the beam splitting device is attached to the opening of the opaque surface.

(previous technical literature) (Patent Literature)

Patent Document 1: Japanese Patent Publication No. 9-506717

(Non-patent literature)

Non-Patent Document 1: H. Yamamoto, Y. Tomiyama, S. Suyama, "Floating aerial LED signage based on aerial imaging by retro-reflection (AIRR)", Optics Express, Vol. 22, No. 22, pp. 26919-26924 (2014).

However, in the display device 101 shown in Fig. 53, among the light beams L1, a part of the light beams L105 and L108 are reflected by the half mirror 104, and then reflected light rays L106 and L109 are incident on the display D1 to contribute to the aerial image I. form. In other words, in the conventional AIRR display device, since the light ray L1 does not include the light ray L105 in which the aerial image I is not formed, there is a problem that the aerial image I viewing angle θ 101 is made small.

The present invention provides a display device and a display method for an aerial image in order to solve the above problems, and is capable of observing an image (air image) formed in the air from a wider angle.

The present invention has the following means for solving the above problems.

The display device of the present invention includes: a first light source; a first return reflection portion disposed at a position on a first emission axis that displays an emission direction of the first light emitted by the first light source; and a first light divergence The portion reflects at least a portion of the first light ray emitted from the first light source into a first reflected ray, and transmits at least a portion of the first reflected ray reflected by the first reset reflecting portion.

In the display device of the present invention: the aforementioned first resetting The emitting portion may be disposed in the emission direction of the first light ray based on the first light source on the first emission axis, and may transmit the first light ray.

Further, in the display device of the present invention, the first reset reflection portion may be disposed on the opposite side of the emission direction of the first light ray based on the first light source on the first emission axis, and the first emission The position of the first light source disposed on the shaft is configured to enable the non-arranged portion of the first light source to transmit the first light and the first reflected light.

Further, in the display device of the present invention, the first return reflection portion may be disposed at a position where the first light source is disposed on the first emission axis.

Further, in the display device of the present invention, the first reflected light may be incident on the first reset reflection portion.

Further, in the display device of the present invention, the first reflected light may be incident on the first reset reflection portion, and the display device may further include: a first wavelength plate disposed on the first emission axis a first light source is disposed between the first return reflection portion; and a second wavelength plate is disposed in an emission direction of the first light ray with respect to the first return reflection portion on the first emission axis; and the first polarized light The diverging portion is disposed between the first light source and the first wave plate disposed on the first emission axis, and transmits a specific polarized light; the first wave plate and the second wave plate are incident on each of the The direction of the electric field vibration of the light imparts a phase difference of (π/2).

Further, the display device of the present invention may further include: a second reset reflection disposed at a position on the second emission axis on which the emission direction of the first reflected light reflected by the first light branching portion is displayed unit.

Further, in the display device of the present invention, the first wavelength plate may be disposed between the first light source disposed on the first emission axis and the first return reflection portion; and the second wavelength plate may be The first returning reflection portion on the first emission axis is disposed in the emission direction of the first light ray, and the first polarization branching portion is the first light source and the first surface disposed on the first emission axis Between the wave plates, and transmitting a specific polarized light; the second light source emits the second light toward the opposite side of the emission direction of the first reflected light reflected by the first light branching portion; the second returning reflection portion Is disposed at a position on the third emission axis showing the emission direction of the second light, and may reflect the first reflected light and may transmit the second light; the second light divergence portion is transmitted through the foregoing At least a portion of the second ray of the second reset reflecting portion is reflected as a second reflected ray, and at least one of the second reflected ray reflected by the second reset reflecting portion is reflected a third wavelength plate disposed between the second light source and the second return reflection portion disposed on the third emission axis; and a fourth wavelength plate being the second return on the third emission axis The reflection portion is disposed in the emission direction of the second light ray, and the second polarization branch portion is disposed between the second light source and the third wavelength plate on the third emission axis, and is transmissive to the foregoing Specific polarized light having orthogonal polarization; the first wave plate, the second wave plate, the third wave plate, and the fourth wave plate are given (π/2) toward an electric field vibration direction of light incident on each of them Phase difference.

Further, in the display device of the present invention, it is also possible to provide: The second light source emits the second light beam toward the opposite side of the emission direction of the first reflected light reflected by the first light branching portion; and the second reset reflecting portion is disposed to display the second light emitting The third direction of the output is at a position on the axis, and the first reflected light can be reflected back and transmitted and the second light can be transmitted.

Further, in the display device of the present invention, an imaging element may be disposed between the first light source and the first return reflection portion on the first emission axis.

The display method of the aerial image according to the present invention is characterized in that the first light ray is emitted from the first return reflection portion at a position on the first emission axis indicating the emission direction of the first light ray by emitting the first light ray. a step of: reflecting at least a portion of the first light ray transmitted through the first reset reflecting portion as a first reflected light by the first light branching portion toward the first complex reflecting portion; and And returning at least a portion of the first reflected ray reflected by the return reflection portion by the first light branching portion.

Furthermore, the display device of the present invention is characterized in that: the first light source; the first light branching portion is configured to reflect at least a portion of the first light ray emitted from the first light source into the first reflected light; and the first return light The reflection portion is disposed at a position on the second reflection axis that displays an emission direction of the first reflected light reflected by the first light branching portion; the first light branch portion is oriented toward the center from the outer periphery The first light branching portion is curved convexly on a side opposite to a side on which the first light source and the first returning reflecting portion are disposed.

Further, the display device of the present invention includes: a first light source; and a first wavelength plate that emits an emission direction of the first light emitted from the first light source from a side of the first light source The first returning reflection portion is disposed on the opposite side of the first wave plate facing the side of the first light source; the first reflecting plate is from the other side of the first light source The portion extends along the first exit axis; the first light branching portion is disposed between the front end portion of the first wave plate and the front end portion of the first reflecting plate; and the second reflecting plate is from the foregoing The front end portion of the first reflecting plate extends in the same direction as the extending direction of the first reflecting plate via the first light branching portion; the first wave plate is directed to the electric field vibration direction of the light incident on each of the first reflecting plates Give a phase difference of (π/2).

Further, the display device of the present invention includes: a first light source; and a first light branching portion and a second light branching portion disposed to face each other across the first light source; and an emitting portion of the first light source And a space formed between the first light branching portion and the second light branching portion, wherein the first light branching portion and the second light branching portion are configured to emit the first light from the first light source At least a portion of the light is reflected as the first reflected light, and at least a portion of the first reflected light is reflected, and the light is split in the light diverging portion of one of the first light branching portion and the second light branching portion The first returning reflection portion is provided on the opposite side of the branch portion with respect to the side.

Further, the display device of the present invention includes: a first light source; and a first liquid crystal panel disposed on the display from the first light source a position on the first emission axis of the emission direction of the first light emitted; the first polarizing plate is disposed between the first light source and the first liquid crystal panel disposed on the first emission axis; the first light diverging portion Reflecting at least a portion of the first ray emitted from the first light source into a first reflected ray, and transmitting at least a portion of the first reflected ray reflected by the first reset reflecting portion; and The return-reflecting portion is disposed at a position on the second emission axis that displays the emission direction of the first reflected light.

Further, in the display device of the present invention, the second liquid crystal panel may be disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, and the first surface on the first emission axis a second polarizing plate is disposed in front of the liquid crystal panel, and a first wave plate is disposed behind the first return reflection portion on the second emission axis, and the first wavelength plate is directed to an electric field vibration direction of the incident light. The phase difference of (π/2) is given, and the first optical branching portion is a reflective polarizing plate, and the direction of polarization of the reflective polarizing plate is formed to be flat with a direction of polarization of the first polarizing plate.

Further, in the display device of the present invention, the second liquid crystal panel may be disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, and the second liquid crystal panel may be disposed on the second emission axis A first wave plate is disposed behind the return-reflecting portion, and the first wave plate is provided with a phase difference of (π/2) toward an electric field vibration direction of the incident light, and the first light branching portion is a reflective polarizing plate. The direction of polarization of the reflective polarizing plate is formed in parallel with the direction of polarization of the first polarizing plate. The optical axis of the first wavelength plate is disposed parallel to the width direction of the first light source.

Further, in the display device of the present invention, the second liquid crystal panel may be disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, and the first liquid crystal panel may be on the first emission axis a second polarizing plate and a first wave plate are disposed in front of the first liquid crystal panel, and a second wave plate is disposed behind the first return reflecting portion on the second emission axis, and a direction of polarization of the reflective polarizing plate is disposed. The direction of the polarization of the first polarizing plate 4 is orthogonal to each other, and the optical axes of the first wave plate and the second wave plate are disposed perpendicular to the width direction of the first light source.

Further, in the display device of the present invention, the second liquid crystal panel may be disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, and the first surface on the first emission axis a first wave plate is disposed in front of the liquid crystal panel, and a second wave plate is disposed behind the first return reflection portion on the second emission axis, and a direction of polarization of the reflective polarizer is coupled to the first polarized light. The direction of the polarization of the plate 4 is orthogonal, and the optical axes of the first wave plate and the second wave plate are arranged parallel to the width direction of the first light source.

Furthermore, in the display device of the present invention, the cymbal system having a plurality of turns in a direction orthogonal to the first emission axis may be disposed in front of the first light source on the first emission axis.

Display device and aerial image display method of the present invention The light of at least a portion of the first light emitted from the first light source is reflected by the first light diverging portion into the first reflected light, and then the first light reflecting portion is directed toward the first light diverging portion. Reflecting, while transmitting the first light diverging portion, forming an aerial image. That is, since the first reflected light can also reach a position where the aerial image cannot be formed in a conventional display device, an aerial image can be formed. Therefore, according to the present invention, it is possible to provide a display device capable of observing an aerial image from a wider angle and a display method of an aerial image.

1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1K, 1M, 1N, 1P, 1P', 1Q, 1R, 1T(1), 1T(2), 1T(3), 1T(4), 1V, 1W‧‧‧ display devices

2, 2A‧‧‧ first return to the reflection department

4‧‧‧First Light Differences Department

5‧‧‧Second light divergence

6, 7‧‧‧ second return to the reflection department

21‧‧‧First Wavelength Board

22‧‧‧second wave plate

23‧‧‧ Third Wavelength Board

24‧‧‧fourth wave plate

50A‧‧‧First reflector

50B‧‧‧second reflector

A‧‧‧ space

D1‧‧‧ first display

E0‧‧‧ viewing direction

E1, E2‧‧‧ shooting direction

I‧‧‧ aerial image

J1‧‧‧first shot axis

J2‧‧‧second reflection axis

L1‧‧‧First light

L2‧‧‧First reflected light

L11, L15, L18‧‧‧ rays

L12, L13, L16, L19‧‧‧ reflected light

L21‧‧‧second light

P2, P4, P6, PS1, Q1, Q2‧‧‧ position

S1‧‧‧ first light source

S2‧‧‧second light source

Z1, Z2‧‧‧ area

θ 1A‧‧‧ angle

Fig. 1 is a schematic view showing the configuration of a display device according to a first embodiment of the present invention.

Fig. 2 is a side view showing a first example of the structure of a reset reflecting portion used in the display device according to the first embodiment of the present invention.

Fig. 3 is a side view showing a second example of the structure of the return reflection portion used in the display device according to the first embodiment of the present invention.

Fig. 4 is a schematic view showing the configuration of a display device according to a second embodiment of the present invention.

Fig. 5 is a schematic view showing the configuration of a display device according to a third embodiment of the present invention.

Fig. 6 is a schematic view showing a configuration of a modification of the display device according to the third embodiment of the present invention.

Fig. 7 is a schematic view showing the configuration of a display device according to a fourth embodiment of the present invention.

Figure 8 is a view showing the construction of a display device according to a fifth embodiment of the present invention. A rough picture.

Fig. 9 is a schematic view showing the configuration of a display device according to a sixth embodiment of the present invention.

Figure 10 is a plan view of a fourth display of the display device shown in Figure 9.

Fig. 11 is a schematic view showing the configuration of a display device according to a first modification of the sixth embodiment of the present invention.

Fig. 12 is a schematic view showing the configuration of a display device according to a second modification of the sixth embodiment of the present invention.

Figure 13 is a schematic view showing the configuration of a display device according to a seventh embodiment of the present invention.

Fig. 14 is a schematic view showing the configuration of a display device according to an eighth embodiment of the present invention.

Fig. 15 is a schematic view showing the configuration of a display device according to a ninth embodiment of the present invention.

Figure 16 is a schematic view showing the configuration of a display device according to a first modification of the ninth embodiment of the present invention.

Figure 17 is a schematic view showing the configuration of a display device according to another modification of the ninth embodiment of the present invention.

Figure 18 is a schematic view showing the configuration of a display device according to a second modification of the ninth embodiment of the present invention.

Fig. 19 is a schematic view showing the configuration of a display device according to a tenth embodiment of the present invention.

Figure 20 is a view showing a display device according to a tenth embodiment of the present invention; A schematic diagram of another configuration.

Figure 21 is a schematic view showing still another configuration of a display device according to a tenth embodiment of the present invention.

Fig. 22 is a schematic view showing another configuration of a display device according to a tenth embodiment of the present invention.

Fig. 23 is a schematic view showing still another configuration of the display device of the tenth embodiment of the present invention.

Fig. 24 is a schematic view showing the configuration of a first modification of the display device of the present invention.

Fig. 25 is a schematic view showing the configuration of a second modification of the display device of the present invention.

Fig. 26 is a schematic view showing the configuration of the display device of the present invention and showing the display device housed in the casing.

Fig. 27 is a schematic view showing an example of use of the display device of the present invention.

Fig. 28 is a schematic view showing the configuration of a third modification of the display device of the present invention.

Fig. 29 is a photograph of the aerial image displayed by the display device 1A of the first embodiment and the direct transmitted light irradiated by the light source.

Figure 30 is a photograph of an aerial image displayed by the display device 1E of Embodiment 2 and a direct transmitted light illuminated by a light source.

Fig. 31 is a photograph of the aerial image displayed by the display device 1G of the third embodiment and the direct transmitted light irradiated by the light source.

Fig. 32 is a photograph of the aerial image displayed by the display device 1G' of the third embodiment and the direct transmitted light irradiated by the light source.

Figure 33 is a photograph of an aerial image displayed by the display device 1H of Embodiment 4 and a direct transmitted light illuminated by a light source.

Fig. 34 is a photograph of the aerial image displayed by the display device 1K of the fifth embodiment and the direct transmitted light irradiated by the light source.

Fig. 35 is a photograph of an aerial image displayed by the display device 1P of the sixth embodiment.

Fig. 36 is a photograph of an aerial image displayed by the display device 1Q of the sixth embodiment.

Fig. 37 is an image of the emission of the special color display used in Example 7 and Comparative Example 1.

Fig. 38 is a photograph of an aerial image displayed by the display device CT of Comparative Example 1.

Fig. 39 is a photograph of an aerial image displayed by the display device 1T(1) of the seventh embodiment.

Fig. 40 is a photograph of an aerial image displayed by the display device 1T (2) of the seventh embodiment.

Fig. 41 is a photograph of an aerial image displayed by the display device 1T (3) of the seventh embodiment.

Fig. 42 is a photograph of an aerial image displayed by the display device 1T (4) of the seventh embodiment.

Fig. 43 is a photograph of an aerial image displayed by the display device 1T (2) of the eighth embodiment on the left side of the image direction.

Fig. 44 is a photograph of an aerial image displayed by the display device 1T (2) of the eighth embodiment on the front side facing the aerial image direction.

Fig. 45 is a photograph of an aerial image displayed by the display device 1T (2) of the eighth embodiment on the right side of the image direction.

Fig. 46 is a photograph of another aerial image displayed by the display device 1T (2) of the embodiment 8 on the left side of the aerial image direction.

Fig. 47 is a photograph of another aerial image displayed by the display device 1T (2) of the embodiment 8 in front of the direction of the aerial image.

Fig. 48 is a photograph of another aerial image displayed by the display device 1T (2) of the embodiment 8 on the right side of the image direction.

Fig. 49 is a schematic view showing the configuration of the display device of the ninth embodiment.

Fig. 50 is a photograph of an aerial image displayed before the arrangement of the wavelength plate 53 in the display device of the ninth embodiment.

Fig. 51 is a photograph of an aerial image displayed when the wavelength plate 53 is disposed in the display device of the ninth embodiment.

Fig. 52 is a view showing a projection image of a three-dimensional object using the display device of the tenth embodiment and a photograph of the obtained aerial image.

Fig. 53 is a schematic view showing the configuration of a conventional display device.

Hereinafter, embodiments of a display device and an aerial image display method according to the present invention will be described with reference to the drawings. In addition, the drawings used in the following description are schematic, and the ratios of the length, the width, and the thickness are not necessarily the same as the actual ones, and can be appropriately changed.

(First embodiment)

As shown in Fig. 1, the display device 1A of the first embodiment is provided with There are: a first light source S1, a first reset reflecting portion 2A, a first light branching portion 4, and a second returning reflecting portion 6.

The first light source S1 is, for example, an LED, but is not particularly limited. The first light source S1 of the display device 1A of the first embodiment is arranged in parallel with the plate surface of the first display D1, and is provided so as to coincide with the emission directions of the light rays. Further, the number and relative positions of the first light sources S1 are not specifically limited.

In the present invention, the first reset reflection unit 2 is disposed at a position P2 on the first emission axis J1 that displays the emission direction E1 of the first light L1 emitted from the first light source S1.

The first reset reflection unit 2A of the first embodiment is disposed in the emission direction E1 with reference to the first light source S1 on the first emission axis J1. The first reset reflection unit 2A is preferably disposed on the first emission axis J1 in the vicinity of the first display D1 (that is, the position PS1 of the first light source S1). The first reset reflection portion 2A may be in contact with the first display D1 on the side of the first light source S1 in the emission direction E1 of the first display D1.

The first reset reflection unit 2A is provided with a known complex reflection structure. The return reflection structure of the first reset reflection unit 2A includes, for example, the reset reflection structures 3A and 3B including a plurality of unit structures 10 as shown in FIGS. 2 and 3, and the unit structure 10 has at least one The above reflective surface 12.

The surface 3a (that is, the light incident surface) of the retroreflective structure 3A shown in Fig. 2 is formed flat. On the other hand, the surface 3b of the retroreflective structure 3A is adjacent to each other along the surface 3b when viewed from the side. The method forms a plurality of triangular shapes constituting the unit structure 10.

The light ray L10a incident on the surface 3a is the transmission surface 2a, and is incident on the reflection surface 12a of the unit structure 10 with the light ray L10b. The light ray L10b is reflected by the reflecting surface 12a, and proceeds toward the reflecting surface 12c of the unit structure 10 with the light ray L10c. In the retroreflective structure 3A, the internal angles of the reflecting surfaces 12a and 12c of the unit structure 10 are set to a predetermined angle (that is, approximately 90°). Therefore, the light ray L10c incident on the reflecting surface 12c is reflected by the reflecting surface 12c in the direction parallel to the light ray L10b as the light ray L10d, and is emitted from the surface 3a as the reflected light ray L10e.

Further, in Fig. 2, the refraction of the self-illumination 10a toward the light ray 10b and the refraction angle from the ray 10d to the ray 10e with the surface 3a as the boundary is omitted.

The surfaces 3a and 3b of the retroreflective structure 3B shown in Fig. 3 are formed in a semicircular shape in which a plurality of constituent unit structures 10 are formed adjacent to each other along the surfaces 3a and 3b when viewed from the side. That is, the reset reflection structure 3B has a structure in which a plurality of minute cylinders or spheres are arranged adjacent to each other in one direction.

The light ray L10a incident on the surface 3a is a transmission surface 3a which is refracted by the refraction angle of the curvature by the surface 3a, and proceeds toward the reflection surface 12a with the light ray L10b. The light ray L10b incident on the reflecting surface 12a is reflected by the reflecting surface 12a, and the reflected light ray L10d is advanced toward the surface 3a. Since the surface 3a and the reflecting surface 12a are formed in a spherical shape, the light beam L10d reflected by the reflecting surface 12a is refracted in the direction parallel to the light ray L10a by the surface 3a, and is emitted as the reflected light ray L10e from the surface 3a.

According to the first reset reflection portion 2A including the return reflection structures 3A and 3B, since the incident angle and the emission angle are equal, the light incident on the first return reflection portion 2A is not affected by the refractive index of the material of the return reflection structure 3A. And reflected in the same direction as the incident direction. The first reset reflection portion 2A is disposed such that the surface 3b side of the return reflection structure 3A or the return reflection structure 3B faces the first light source S1.

The material of the first reset reflection portion 2A is capable of transmitting the first light ray L1 as long as the first return-reflecting portion 2A can re-reflect the light incident from the side of the first light-dividing portion 4 (that is, the side opposite to the emission direction E1). It is not specifically limited. As long as the first light ray L1 is visible light, the first light ray L1 can be transmitted more efficiently inside the return reflection structures 3A and 3B, and the material of the first return reflection unit 2A is exemplified by, for example, an optical glass. Polycarbonate resin (PC), polymethyl methacrylate resin (PMMA), and the like. Further, on the surface 3b side, that is, the reflecting surfaces 12a and 12c are provided with a reflective material (not shown). In the case of the reflective material, the first light ray L1 can be transmitted in the emission direction E1, and the light (for example, the light ray L16 or the like) that is incident on the first returning reflection portion 2A in the opposite direction to the emission direction E1 can be reflected. For the substance, for example, a dielectric substance or the like is listed.

Further, as long as the light incident on the first returning reflection portion 2 can be reflected in the same direction as the incident direction, the structure and material of the first return-reflecting portion 2 are not particularly limited.

For example, in the case of the first returning reflection portion 2, it is exemplified that a full corner-cube, a cat's eye returning reflection material, and a cylindrical lens (lenticular) A combination of a lens and a reflector, a lens in which a single lens is arranged in longitudinal and lateral contact (so-called fly-eye lens, fly-eye lens) and a reflector, or a holographic image of replicated refraction performance ( Hologram), which can be configured by a spatial light modulator (SLM) and/or an Acousto-optic Modulator (AOM) and programmed with a digital hologram and phase Yoke mirror, etc. For the full-width enamel, for example, a conventional reflection type reflection sheet (for example, refer to http://www.yao-sangyo.co.jp/sign/prism_4090.html, etc.) or a crystal grade (Crystal Grade) (Registered trademark, for example, refer to http://www.carbide.co.jp/jp/viewer/file/product/4c74f1d8ac72dfc26d1e3587c0358529.pdfsurasshu4c74f1d8ac72dfc26d1e3587c0358529.pdf, etc.).

The first light diverging portion 4 reflects a portion of the first light ray L1 transmitted through the first reset reflecting portion 2A as the first reflected light ray L2 toward the second reset reflecting portion 6 and is transmitted by the second returning reflecting portion 6 At least a portion of the reflected first reflected light L2. The first light branching portion 4 is disposed at a predetermined position on the observation position side of the user from the first light source S1 and the first return reflection portion 2A. The first light branching portion 4 is, for example, a half mirror, as long as at least a portion of the first light ray L1 can be reflected as described above, and at least a portion of the first reflected light ray L2 reflected by the first returning reflecting portion 2A is transmitted. It is not specifically limited. In the above-described first light-dividing portion 4, in addition to the half mirror, for example, a plate-like member containing acrylic or glass, or the like, is formed and accommodated in the hollow portion. a hollow body of water, a plate body having a row of openings such as punched metal, and a wire grid (wire grid) film, reflective polarizing film, and others commonly referred to as beam splitters.

The second reset reflection unit 6 is disposed at a position P6 on the second emission axis J2 that displays the emission direction E2 of the first reflected light L2 reflected by the first light branching unit 4. The position P6 of the second reset reflection unit 6 is located in the emission direction E2, and is appropriately set in consideration of the position PS1 of the first display D1, the position P2 of the first reset reflection unit 2A, and the position P4 of the first light division unit 4. A position at which the first reflected light L2 is incident.

The second reset reflection unit 6 is provided with a conventional reset reflection structure. In other words, the structure and material of the second reset reflecting portion 6 are the same as those of the first reset reflecting portion 2, as long as the light incident on the second returning reflecting portion 6 can be incident on and incident. Reflectors in the same direction are not specifically limited. However, the second reflected light reflecting portion 6 does not need to transmit the first reflected light ray L2. Therefore, for example, in the case of the reset reflection structures 3A and 3B, the reflective material is disposed on the surface 3b side, that is, the reflective material disposed on the reflective surfaces 12a and 12c. In addition to the above-described dielectric substance and the like, for example, aluminum, gold, silver, or the like is exemplified.

In the display device 1A of the first embodiment, among the first light beams L1 emitted from the first light source S1, a part of the light ray L11 is reflected by the first light branching portion 4 into the reflected light ray L12 (first reflected light ray L2). The reflected light beam L12 is incident on the second return-reflecting portion 6, and is reflected by the second reset reflecting portion 6 in the same direction as the incident direction, and the reflected light L13 is incident on the first light branching portion 4, and the first light branching portion is transmitted. 4, in the plane relative to the first light branching portion 4 (ie, the reflecting surface) is the first light The position Q1 of the source S1 symmetry forms an aerial image I.

In addition, among the first light rays L1, the light ray L15 is reflected by the first light branching portion 4, and is incident on the first returning reflection portion 2A by the reflected light ray L16 (first reflected light ray L2), by the first returning reflection portion 2A. And reflecting in the same direction as the incident direction, transmitting the first light branching portion 4, and forming an aerial image I at a position Q1 which is symmetrical with respect to the first light source S1 with respect to the plate surface (that is, the reflecting surface) of the first light branching portion 4. .

Further, for example, the light ray L18 (first ray L1) emitted from the first light source S1 disposed at one end of the first display D1 is reflected by the first light branching portion 4, and then reflected light L19 (first The reflected light ray L2) is incident on the first return-reflecting portion 2A, is reflected by the first return-reflecting portion 2A in the same direction as the incident direction, and transmits the first light-dividing portion 4 on the surface of the first light-dividing portion 4 (ie, the reflecting surface) forms an aerial image I at a position Q2 that is symmetrical with the first light source S1.

According to the display device 1A of the first embodiment described above, the user displays in addition to a certain area Z1 in the space A (that is, a space existing to the user of the first light branching portion 4). The aerial image I can also be observed in the area Z2 of the device that cannot be observed. Therefore, the user can observe the aerial image I displayed on the region Z1 and the region Z2 from the observation direction E0 on the opposite side to the first light source S1 with respect to the first light branching portion 4. Thereby, the angle θ 1A that the aerial image I can view can be enlarged in the display device 1A. Further, as can be seen from Fig. 1, the substantially entire entirety of the first light ray L1 emitted from the first light source S1 can be contributed to the formation of the image I regardless of the position of the first light source S1 in the first display D1. Able to seek The brightness of the air like I is improved.

(Second embodiment)

Hereinafter, a display device 1B according to a second embodiment of the present invention will be described. In the components of the display device 1B of the second embodiment shown in FIG. 4, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in FIG. 4, the display device 1B includes a first light source S1, a first reset reflecting portion 2A, and a first light branching portion 4 disposed so as to face the first reset reflecting portion 2A. The wave plate 21, the second wave plate 22, and the first polarization branching portion 25.

Further, in the display device 1B, the first reflected light ray L2 is incident on the first return reflection portion 2A.

The arrangement of the first reset reflection portion 2A is such that the user can make the aerial image I formed by the first reset reflection portion 2A and the first light source S1 (that is, directly transmitted light) as one body, Not specifically limited. Specifically, it is assumed that the distance between the position of the eye portion of the user and the aerial image I (that is, the observation distance) is V, and when the interval between the position PS1 of the light source S1 and the position P2 of the first reset reflection portion 2A is T, Then T < (V / 50) is better.

The first wave plate 21 is disposed between the first light source S1 and the first return reflection portion 2 on the first emission axis J1. The second wave plate 22 is disposed on the first returning reflection portion on the first emission axis J1. The direction E1 of the light L1 is emitted.

The first wave plate 21 and the second wave plate 22 are configured to impart a phase difference of (π/2) toward the direction of electric field vibration of each incident light, that is, a so-called λ/4 wavelength plate.

The first polarization branching portion 25 is disposed between the first light source S1 on the first emission axis J1 and the first wave plate 21. Therefore, in the display device 1B, the first display D1 including the first light source S, the first polarization branching portion 25, the first wave plate 21, and the first reset reflection portion 2A are arranged along the emission direction E1 of the first light ray L1. The second wave plate 22 and the first light branching portion 4 are disposed to face each other. The first display D1, the first polarization branching portion 25, the first wave plate 21, the first return reflection portion 2A, and the second wave plate 22 are preferably very close to each other, and may be integrated with each other. Chemical.

The first polarization branching portion 25 is configured to be capable of transmitting P-polarized light and capable of reflecting S-polarized light, and is, for example, a reflective polarization beam splitter.

In the display device 1B of the second embodiment, among the first light beams L1 emitted from the first light source S, only the first light ray L1 that is P-polarized is transmitted through the first polarization branching portion 25 and emitted along the emission direction E1. The first wave plate 21, the first returning reflection portion 2, and the second wave plate 22 are sequentially transmitted to form the S-polarized first light ray L1 and emitted. A portion of the first light ray L1 of the S-polarized light emitted from the second wave plate 22 is reflected by the first light branching portion 4 into the first reflected light ray L2. The S-polarized first reflected light ray L2 is transmitted through the second wave plate 22 and is incident on the first return-reflecting portion 2A, and is reversed in the same direction as the incident direction by the first return-reflecting portion 2A. The second light-wavelength plate 22 is transmitted again, and the reflected light ray L3 of the P-polarized light is incident on the first light-dividing portion 4. Then, the reflected light L3 of the P-polarized light is transmitted through the first light branching portion 4, and the air image I is formed at a position Q1 which is symmetrical with respect to the first light source S1 with respect to the plate surface (that is, the reflecting surface) of the first light branching portion 4. .

According to the display device 1B of the second embodiment described above, the user can observe the aerial image I from the observation direction E0 on the opposite side to the first light source S1 with respect to the first light branching portion 4. As a result, in the display device 1B of the second embodiment, the angle θ 1B viewed by the aerial image I covers the entire area of the first light source S1 disposed on the first display D1, and the angle θ 1B can be enlarged. Further, as can be seen from Fig. 4, substantially the entire first light ray L1 of the P-polarized light emitted from the first light source S1 can be contributed to the aerial image, regardless of the position of the first light source S1 in the first display D1. The formation of I.

Further, according to the display device 1B of the second embodiment, the first resetting portion 2 is provided to the first light source S1 and the first display D1 so as to face the emission direction E1 of the first light ray L1, and the first light branching portion 4 is used. The reflective polarizing film, the polarizing plate, or the half mirror is provided with a polarizing film or the like, so that the direct light is blocked by the first light branching portion 4, so that the user does not see the first light source S and the first display D1 (also That is, direct transmission of light). Therefore, the deterioration of the visibility of the aerial image I formed by the mixing of the aerial image I and the first light source S1 can be prevented.

Further, according to the display device 1B of the second embodiment, the second return-reflecting portion 6 can be omitted, and the first light source S1 and the first polarization branching portion 25 can be arranged along the emission direction E1 of the first light ray L1. The one-wavelength plate 21, the first return-reflecting portion 2A, the second-wavelength plate 22, and the first light-dividing portion 4 can reduce the size and space of the entire device.

(Third embodiment)

Hereinafter, a display device 1C according to a third embodiment of the present invention will be described. In the components of the display device 1C of the third embodiment shown in FIG. 5, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in FIG. 5, the display device 1C includes a first light source S1, a first reset reflection unit 2A, a first light branching unit 4, a first wave plate 21, a second wave plate 22, and a first polarization branching portion. 25. The second light source S2, the second reset reflecting portion 7, the second light branching portion 5, the third wave plate 23, the fourth wave plate 24, and the second polarization branching portion 26.

Similarly to the first light source S1, the second light source S2 is, for example, an LED, but is not particularly limited.

Further, the second light source S2 of the display device 1C of the third embodiment is arranged in parallel with the plate surface of the second display D2, and is arranged to be aligned with the direction in which the light is emitted. In addition, the number of the second light sources S2 is not specifically limited. However, the second light source S2 is disposed such that the second light ray L21 can be emitted in a direction E3 (hereinafter, an emission direction E3) opposite to the emission direction E2 of the first reflected light ray L2.

The second reset reflection unit 7 is disposed at a position P7 on the third emission axis J3 that displays the emission direction E3 of the second light ray L21, and is configured. The first reflected light L2 is reflected and reversibly reflected, and at least a portion of the second light L21 is transmitted. The structure and material of the second reset reflection unit 7 are the same as those of the first reset reflection unit 2 described above.

The second light branching portion 5 transmits a portion of the second light ray L21 transmitted through the second reset reflecting portion 7 and reflects at least a portion of the second light ray L21 transmitted through the second returning reflecting portion 7 to the second reflection. Light L22.

The third wave plate 23 is disposed between the second light source S2 and the second return reflection portion 7 on the third emission axis J3. The fourth wave plate 24 is disposed at a position in the emission direction E3 of the second light ray L21 with reference to the second return reflection portion 7 on the third emission axis J3.

Similarly to the first wave plate 21 and the second wave plate 22, the third wave plate 23 and the fourth wave plate 24 are configured to give a phase difference of (π/2) toward the direction of electric field vibration of each incident light. This is called the λ/4 wavelength plate.

The second polarization branching portion 26 is disposed between the second light source S2 on the third emission axis J3 and the third wave plate 23. Therefore, in the display device 1C, the second display D2 including the second light source S2, the second polarization branching portion 26, the third wavelength plate 23, and the second are appropriately disposed so as to follow the emission direction E3 of the second light ray L21. The reflection portion 7, the fourth wave plate 24, and the second light branch portion 5 are reset. In the above, the second display D2, the second polarization branching portion 26, the third wave plate 23, the second return reflection portion 7, and the fourth wave plate 24 are preferably very close to each other, and may be in contact with each other. Integration.

The second polarization branching portion 26 is configured to be capable of reflecting P-polarized light and capable of transmitting S-polarized light, and is, for example, a reflective polarization beam splitter.

Referring to Fig. 5, the display device 1C of the third embodiment includes the first display D1 including the first light source S1, the first polarization branching portion 25, and the first wavelength plate 21 in the display device 1B of the second embodiment. The relative positions of the first reset mirror portion 2A and the second wave plate 22 and the first light branching portion 4 are the first display D1 and the first reset reflecting portion 2A in the display device 1A of the first embodiment. The relative position of the first light branching portion 4 is the same, and the same configuration is arranged for the above-described configuration.

In the display device 1C of the third embodiment, among the first light beams L1 emitted from the first light source S1, only the first light ray L1 that is P-polarized is transmitted through the first polarization branching portion 25 and emitted along the emission direction E1. The first wave plate 21, the first returning reflection portion 2, and the second wave plate 22 are sequentially transmitted to form the S-polarized first light ray L1 and emitted. A portion of the first light ray L1 of the S-polarized light emitted from the second wave plate 22 is reflected by the first light branching portion 4 into the first reflected light ray L2. The S-polarized first reflected light L2 is transmitted through the second wave plate 22, is incident on the second return-reflecting portion 6, and is reflected by the second return-reflecting portion 6 in the same direction as the incident direction, and is transmitted through the second wave plate 22 again. The reflected light L3 of the P-polarized light is incident on the first light branching portion 4. Then, the P-polarized reflected light L3 is transmitted through the first light branching portion 4, and the air image I1 is formed at a position Q1 which is symmetrical with respect to the first light source S1 with respect to the plate surface (that is, the reflecting surface) of the first light branching portion 4. .

On the other hand, among the second light beams L21 emitted from the second light source S2, only the second light ray L21 of the S-polarized light is transmitted through the second polarization branching portion 26 and emitted along the emission direction E3, and the third wavelength plate is sequentially transmitted. 23. The second reset reflecting portion 7 and the fourth wave plate 24 form a P-polarized first light ray L21 and emit the light.

A portion of the first light ray L1 of the P-polarized light emitted from the fourth wave plate 24 is reflected by the second light branching portion 5 as the first reflected light ray L2. The P-polarized first reflected light L2 is transmitted through the fourth wave plate 24, is incident on the second return-reflecting portion 7, and is reflected by the second return-reflecting portion 7 in the same direction as the incident direction, and transmits the fourth wave plate 24 again. The reflected light ray L3 that is S-polarized is incident on the second light branching portion 5. Then, the S-polarized first reflected light L3 is transmitted through the second light branching portion 5, and is formed in the air at a position Q10 which is symmetrical with respect to the second light source S2 with respect to the plate surface (that is, the reflecting surface) of the second light branching portion 5. Like I2.

According to the display device 1C of the third embodiment described above, the user can observe the aerial image I1 (for example, the character image "A") from the observation direction E0 on the opposite side to the first light source S1 with respect to the first light branching portion 4. . On the other hand, the user can observe the aerial image I2 (for example, the character image "B") from the observation direction E10 on the opposite side to the second light source S2 from the second light branching portion 5. As described above, according to the display device 1C of the third embodiment, it is possible to achieve multiview of the aerial images I1 and I2.

In the arrangement in which the polarization directions of the transmitted light in the first light branching portion 4 and the second light branching portion 5 are orthogonal to each other, the first light branching portion 4 passes through the first light branching portion 4 from behind the air image I1 from the observation direction E0. Observing the second light source S2 and the second display D2 (that is, directly transmitting light), the first light source S1 and the first display are observed from the observation direction E10 through the second light branching portion 5 and behind the aerial image I2. D1 (ie, direct transmitted light). That is, Multi-viewpointing of two layers of direct transmitted light formed by the aerial image and the background.

On the other hand, when it is arranged such that the polarization directions of the transmitted light in the first light branching portion 4 and the second light branching portion 5 are parallel, for example, in the second light branching portion 5, only the P-polarized component is transmitted, Correspondingly, in the case where the second polarization branching portion 26 is also configured to transmit only the P-polarized component, the first light source S1 and the first display D1 (that is, directly transmitted light) and the second light source S2 and the second display D2 (ie, directly transmitted light) is not observed, and only the aerial image I1 is observed in the observation direction E1. Thereby, it is created that only the multi-viewpoint of the aerial image I10 is observed in the observation direction E10.

Although FIG. 5 shows multi-viewing in two directions, the display device 1B is provided in an opposite direction in each viewing direction, so that multi-viewing in three or more directions can be realized.

The angles at which the aerial images I1 and I2 are viewed form an entire area including the first light source S1 disposed on the first display D1 and the entire area of the second light source S2 disposed on the second display D2, and can be further enlarged. In addition, the first light of the P-polarized light emitted from the first light source S1 may be made in a manner independent of the position of the first light source S1 in the first display D1 or the position of the second light source S2 in the second display D2. L1 and substantially the entire second light ray L21 of the S-polarized light emitted from the second light source S2 contribute to the formation of the aerial images I1 and I2.

Further, according to the display device 1C of the third embodiment, the first light splitting portion 4 and the second light branching portion 5 are provided with a polarizing film, a polarizing plate, or a half mirror, and a polarizing film or the like is used to provide the first light. Disagree The portion 4 and the second light branching portion 5 block the direct transmitted light, so that the user does not see the first light source S and the first display D1 (that is, directly transmits light). Therefore, the deterioration of the visibility of the aerial image I formed by the mixing of the aerial image I and the first light source S1 or the second light source S2 can be prevented.

As shown in FIG. 6, the display device 1D according to a modification of the display device 1C according to the third embodiment includes the first light source S1, the first reset reflection unit 2, and the first light included in the display device 1C. The structure of the branching portion 4, the first wave plate 21, and the second wave plate 22, and the first polarization branching portion 25, the second light source S2, the second reset reflecting portion 7, the third wave plate 23, and the fourth wave plate 24 The configuration of the second polarization branching portion 26 is close to each other. Therefore, the second light branching portion 5 is omitted in the display device 1D.

According to the display device 1D according to the modification of the third embodiment, the angle viewed by the aerial image I is formed to cover the entire area of the first light source S1 disposed on the first display D1 and the second light source S2 disposed on the second display D2. It can be expanded. Further, the first polarization branching portion 25 is provided to transmit the direct light of the first display D1 to the first light branching portion 4, whereby the user is in a certain direction from the opposite side of the first light branching portion 4 to the second light source S2. E0 can view the background formed by direct light (for example, the text like "U") behind the air like I3 (for example, the text like "O"). As described above, according to the display device 1D according to the modification of the third embodiment, the aerial image I and the direct image can be layered.

(Fourth embodiment)

Hereinafter, the display device 1E according to the fourth embodiment of the present invention is added. To illustrate. In the components of the display device 1E of the fourth embodiment shown in FIG. 7, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in FIG. 7, the display device 1E includes a first light source S1, a first reset reflection unit 2, a first light branching unit 4, a second light source S2, and a second return reflection unit 7. In the configuration of the display device 1A, the display device 1E is provided with the second reset reflection portion 7 at the position of the second return reflection portion 6, and the second display D2 at the emission direction E2 of the second reflected light L2.

In the display device 1E of the fourth embodiment, a part of the first light ray L1 emitted from the first light source S1 is reflected by the first light branching portion 4 as the first reflected light ray L2. The first reflected light L2 is incident on the second return-reflecting portion 6, and is reflected by the second return-reflecting portion 6 in the same direction as the incident direction, and the reflected light L3 is incident on the first light-dividing portion 4, and is transmitted first. The light branching portion 4 forms an aerial image I1 at a position Q1 that is symmetrical with respect to the first light source S1 with respect to the plate surface (that is, the reflecting surface) of the first light branching portion 4.

A portion of the second light ray L21 emitted from the second light source S2 is also reflected by the first light branching portion 4 as the first reflected light ray L2. The first reflected light L2 is incident on the second return-reflecting portion 6, and is reflected by the second return-reflecting portion 6 in the same direction as the incident direction, and the reflected light L3 is incident on the first light-dividing portion 4. Further, the first reflected light ray L2 is transmitted through the first light branching portion 4 at a plate surface (ie, a reflecting surface) with respect to the first light branching portion 4. An aerial image I2 is formed for a position Q10 that is symmetrical with the second light source S2.

According to the display device 1E of the fourth embodiment described above, the user can view the aerial image I1 and the second light source S2 of the display D2 from a certain direction E0 opposite to the first light source portion S1 and the first light source S1 (also That is, both light is transmitted directly). On the other hand, the user can view both the aerial image I2 and the first light source S1 of the display D1 (that is, directly transmitted light) from the observation direction E10 opposite to the second light branching portion 5 and the second light source S2. As described above, according to the display device 1C of the third embodiment, it is possible to multi-view the combined aerial image I and the displays D1 and D2 (that is, the light sources S1 and S2).

The aerial images I1 and I2 viewing angles θ 1E each cover an entire area of the first light sources S1 and S2 disposed on the first displays D1 and D2, and are enlarged. In addition, the first light L1 emitted from the first light source S1 can be made independent of the position of the first light source S1 in the first display D1 or the position of the second light source S2 in the second display D2. The substantially entire entirety of the second light ray L21 emitted by the two light sources S2 contributes to the formation of the aerial images I1, I2.

(Fifth Embodiment)

Hereinafter, a display device 1F according to a fifth embodiment of the present invention will be described. In the components of the display device 1F of the fifth embodiment shown in FIG. 8, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in Fig. 8, the display device 1F is provided with: The light source S1, the first return reflection portion 2B, the first light branching portion 4, and the second return reflection portion 6.

In the display device 1F, the first reset reflection unit 2B is disposed in the emission direction with reference to the first light source S1 on the first emission axis J1 in the emission direction E1 of the first light ray L1 emitted from the first light source S1. The opposite side of E1.

The second return reflection portion 6 is disposed to connect the outer peripheral edge portion of the first return reflection portion 2B and the outer peripheral edge portion of the first light branch portion 4 .

However, the first reset reflection portion 2B does not need to transmit the first light L1 or the first reflected light L2. Therefore, for example, in the case of the reset reflection structures 3A and 3B, the surface is disposed on the surface 3b side (that is, the reflection surfaces 12a and 12c). The reflective material includes, for example, aluminum, gold, silver, and the like in addition to the above-described dielectric substance. In other words, the first reset reflection unit 2B and the second return reflection unit 6 may have the same complex reflection structure.

In the above arrangement, the first light source S1 is disposed in the space X surrounded by the first return-reflecting portion 2B, the first light branching portion 4, and the second return-reflecting portion 6.

In the position PS1 of the third display D3 having the first light source S1, that is, the first light source S1, the non-arranged portion NS of the first light source S1 is capable of transmitting the first light and the first reflected light L2. As for the third display D3 described above, for example, a transparent display or a see-through display is exemplified, and specifically, for example, a transparent pixel liquid crystal display having no color filter, in organic EL A part is made transparent so that the non-arranged portion NS can penetrate the viewer or be opened to each other in a stripe shape A panel made up of a plurality of LEDs arranged in a space (so-called ribbon LED (RIBBON LED), etc.).

In the display device 1F of the fifth embodiment, a part of the first light ray L1 emitted from the first light source S1 is reflected by the first light branching portion 4 as the first reflected light ray L2. The first reflected light ray L2 is incident on the first return-reflecting portion 2B, is reflected by the first return-reflecting portion 2B in the same direction as the incident direction, and partially transmits the non-arranged portion NS of the third display D3, and is incident to The first light branching portion 4 is transmitted through the first light branching portion 4, and the air image I is formed at a position Q1 which is symmetrical with respect to the first light source S1 with respect to the plate surface (i.e., the reflecting surface) of the first light branching portion 4.

In addition, among the first light beams L1, the first light ray L18 incident on the first light branching portion 4 at a relatively small incident angle is reflected by the first light branching portion 4 to reflect the light ray L28 (the first reflected light ray L2) Incident to the second reset reflecting portion 6 and reflecting in the same direction as the incident direction by the second reset reflecting portion 6, transmitting the first light branching portion 4 to the surface of the first light branching portion 4 (that is, The reflecting surface) forms an aerial image I at a position Q1 that is symmetrical with the first light source S1.

According to the display device 1F of the fifth embodiment described above, the user can observe the aerial image I from the first light branching portion 4 in a certain direction E0 opposite to the first light source S1. The angle viewed by the aerial image I in the display device 1F covers substantially the entire surface of the first light branching portion 4, so that the display device and the like can be enlarged. Further, referring to Fig. 8, it can be seen that the substantially entire light ray L1 emitted from the first light source S1 can be made independent of the position of the first light source S1 in the first display D1. Contributing to the formation of the aerial image I, it is possible to improve the brightness of the aerial image I.

(Sixth embodiment)

Hereinafter, a display device 1G according to a sixth embodiment of the present invention will be described. In the components of the display device 1G of the sixth embodiment shown in FIG. 9, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in FIG. 9, the display device 1G includes a fourth display D4 including a first light source S1 and a first reset reflecting portion 2C, a first light branching portion 4, and a second reset reflecting portion 6.

Further, in the display device 1G, the first reflected light ray L2 is incident on the first return reflection portion 2C.

In the display device 1G, the fourth display D4 is disposed on the surface 35a of the substrate 35, and the first light source S1 is disposed to be spaced apart from each other, and between the first light sources S (i.e., the first light source S1) The non-arrangement unit NS) is provided with a first reset reflection unit 2C. According to the configuration described above, the first reset reflection unit 2C is disposed at a position P2 on the first emission axis J1 that displays the first light source S1 and the emission direction E1 of the first light ray L1 emitted from the first light source S1. That is, as shown in Fig. 10, among the same positions PS1 and P2, the plurality of light sources S1 and the first complex reflection unit 2C are arranged in a space division manner.

In addition, the first reset reflection portion 2C does not need to make the first light L1 or the first Since the reflected light L2 is transmitted, for example, in the case of the reset reflection structures 3A and 3B, in the case of the reflective material provided on the surface 3b side (that is, the reflective surfaces 12a and 12c), in addition to the above-described dielectric substance, etc., For example, aluminum, gold, silver, and the like are listed.

As shown in FIG. 9, in the display device 1G of the sixth embodiment, a part of the first light ray L1 emitted from the first light source S1 is reflected by the first light branching portion 4 as the first reflected light ray L2. The first reflected light ray L2 incident on the first reset reflection portion 2C is reflected by the first reset reflection portion 2C in the same direction as the incident direction, and is transmitted through the first light branch portion 4 with respect to the first light branch portion 4 The board surface (i.e., the reflecting surface) forms an aerial image I at a position Q1 that is symmetrical with the first light source S1.

In addition, among the first light beams L1, the first light ray L18 incident on the first light branching portion 4 at a relatively small incident angle is reflected by the first light branching portion 4 to reflect the light ray L28 (the first reflected light ray L2) Incident to the second reset reflecting portion 6 and reflecting in the same direction as the incident direction by the second reset reflecting portion 6, transmitting the first light branching portion 4 to the surface of the first light branching portion 4 (that is, The reflecting surface) forms an aerial image I at a position Q1 that is symmetrical with the first light source S1.

According to the display device 1G of the sixth embodiment described above, the user can observe the aerial image I from a certain direction E0 on the opposite side of the first light branching portion 4 from the first light source S1. The angle at which the aerial image I can be viewed in the display device 1G covers substantially the entire surface of the first light-dividing portion 4, so that the display device and the like can be expanded. In addition, referring to FIG. 9, it is known that the position of the first light source S1 in the fourth display D4 is not related. In this manner, substantially the entire first light ray L1 emitted from the first light source S1 can be contributed to the formation of the aerial image I, so that the brightness of the aerial image I can be improved.

As shown in FIG. 11, the display device 1H according to the first modification of the display device 1G of the sixth embodiment is provided with the first light branching unit 4 disposed relative to the fourth display D4 (that is, the first The surfaces of the light source S1 and the first return reflection portion 2C) are inclined at approximately 45 degrees.

According to the display device 1H according to the first modification of the sixth embodiment, the same operational effects as those of the display device 1G of the sixth embodiment can be obtained, and the direction can be substantially orthogonal to the surface of the fourth display D4. Form an aerial image I.

Further, the angle between the first light branching portion 4 and the fourth display D4 is not limited to substantially 45°, and can be set to an arbitrary angle, and the aerial image I is formed at a position corresponding to the angle.

As shown in Fig. 12, the display device 1K according to the second modification of the display device 1G of the sixth embodiment includes a polarizing plate 40 in addition to the configuration of the display device 1H. However, the first reset reflection portion 2C maintains a spatially divided relationship with the first light source S1 in the horizontal direction, and is disposed at a position in the emission direction E1 of the first light ray L1 with reference to the first light source S1 on the first emission axis J1. P2.

The polarizing plate 40 is disposed between the first light source S1 and the first reset reflecting portion 2C on the first emission axis J1.

In the display device 1K according to the second modification of the sixth embodiment, among the first light beams L1 emitted from the first light source S1, Only the predetermined polarized light is transmitted through the polarizing plate 40, and the first light ray L1 transmitted through the polarizing plate 40 is reflected by the first light diverging portion 4 into the first reflected light ray L2. The first reflected light ray L2 incident on the first return-reflecting portion 2C is reflected by the first return-reflecting portion 2C in the same direction as the incident direction, and is transmitted through the first light-dividing portion 4 in relation to the first light-dividing portion The board surface 4 (i.e., the reflecting surface) is an air image I at a position Q1 that is symmetrical with the first light source S1.

According to the display device 1K according to the second modification of the sixth embodiment, the same operational effects as those of the display device 1H according to the first modification of the sixth embodiment can be obtained. Further, according to the display device 1K according to the second modification of the sixth embodiment, the polarizing plate 40 is provided, and the first light branching portion 4 is provided with a reflective polarizing film, a polarizing plate, or a polarizing film for the half mirror. The first light branching portion 4 blocks the direct transmitted light, so that the user does not see the first light source S1 (that is, directly transmits light) and the fourth display D4. Therefore, the deterioration of the visibility of the aerial image I formed by the mixing of the aerial image I and the first light source S1 can be prevented.

Further, in the display device 1G of the sixth embodiment shown in FIG. 9, the first reset reflection portion 2C is also disposed in the emission direction E1 of the first light ray L1 with respect to the first light source S1 on the first emission axis J1. At the position P2, when the polarizing plate 40 is disposed between the first light source S1 and the first reset reflecting portion 2C on the first emission axis J1, the direct transmitted light is blocked as described above, and only the aerial image I is observed.

(Seventh embodiment)

Hereinafter, the display device 1V of the seventh embodiment of the present invention is applied To illustrate. In the components of the display device 1V of the seventh embodiment shown in FIG. 13 , the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in FIG. 13, the display device 1V includes a first display D1 including a first light source S1, a first light branching portion 4, and a first reset reflecting portion 2A.

In the display device 1V, the first reset reflection portion 2A is disposed at a position on the second reflection axis J2 that displays the emission direction E2 of the first reflected light L2.

Further, the first light-dividing portion 4 is curved convexly on the side opposite to the side on which the first light source S1 and the first return-reflecting portion 2A are disposed so as to face the center of the outer peripheral edge.

According to the display device 1V of the seventh embodiment described above, similarly to the display device 1A of the first embodiment, the user can be in the space A (that is, the space existing to the user of the first light branching portion 4). Inside the observation of the air like I. Further, according to the display device 1V of the seventh embodiment, the second reset reflecting portion 6 can be avoided, and the configuration of the device can be simplified as compared with the display device 1A of the first embodiment. Further, in the display device 1V of the seventh embodiment, it is easy to arrange the aerial image I at a substantially right angle with respect to a tangent to the vertex of the curved first light branching portion 4. Thereby, the first light source S1 and the first reset reflection portion 2A are excluded from the observation direction E0, and when the aerial image I is viewed from the observation direction E0, the virtual image of the first light source S1 and/or the first light source S1 is not viewed. , and the air image I can be easily recognized.

Further, a transparent return-reflecting element is disposed on the first light source S1, thereby expanding the field of view of the aerial image I.

(Eighth embodiment)

Hereinafter, a display device 1W according to an eighth embodiment of the present invention will be described. In the components of the display device 1W of the eighth embodiment shown in FIG. 14, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in FIG. 14, the display device 1W includes a first display D1 including a first light source S1, a first wave plate 21, a first return reflection portion 2A, a first reflection plate 50A, and a first light division portion. 4. The second reflector 50B.

In the display device 1W, the first wave plate 21 is from the side end portion (the side portion of the first light source) e1 of the first display D1, along the first emission axis showing the emission direction E1 of the first light ray L1. Extends with J1. The first reset reflection portion 2A is provided along the first wave plate 21 on the opposite side of the first wave plate 21 from the side facing the first display D1. The first reflecting plate 50A extends from the side end portion (the other side portion of the first light source) e2 of the first display D1 along the first emission axis J1.

The first reflecting plate 50A is, for example, a conventional total reflection lens or the like, but is not particularly limited as long as it can reflect the first light ray L1. The first light branching portion 4 is disposed to connect between the front end portion e3 of the first wave plate 21 and the front end portion e4 of the first reflecting plate 50A.

The second reflecting plate 50B extends from the front end portion e4 of the first reflecting plate 50A in the same direction as the extending direction of the first reflecting plate 50A via the first light branching portion 4, and is flush with the first reflecting plate 50A. Further, the second reflecting plate 50B reflects at least a part of the first reflected light ray L2 reflected by the first reset reflecting portion 2A, and transmits the portion outside. The second reflecting plate 50B is, for example, a conventional half mirror or the like, but is not particularly limited as long as it can reflect the first reflected light L2. Further, the second reflection plate 50B may be a total reflection lens that totally reflects the first reflected light ray L2 reflected by the first reset reflection portion 2A. Further, the second reflecting plate 50B only needs to reflect at least a part of the light of the first reflected light L2, and may be a transparent plate (a table mat made of glass or the like). For example, when a table mat is used as the second reflecting plate 50B, the air image I is seen to be floated while viewing a wood grain like a table.

In the display device 1W of the eighth embodiment described above, among the first light beams L1 emitted from the respective first light sources S1 in the first display D1, the first reflecting plate 50A is directed to the first reflecting plate 50A, and the first reflecting plate 50A is used. The reflection is further reflected toward the first wave plate 21 by the first light branching portion 4 composed of a reflective polarizing plate or the like. One of the P-polarized light or the S-polarized light of the first light ray L1 is transmitted through the first wave plate 21, and is reflected back into the first reflected light ray L2 by the first return-reflecting portion 2A and transmitted through the first light-dividing portion 4. The first reflected light L2 transmitted through the first light diverging portion 4 is reflected by the second reflecting plate 50B as a reset reflected light (reflected light) L13, and the first reflected light L2 directly irradiated from the first return reflecting portion 2A. Together form an aerial image I. Further, as shown in FIG. 14, the first reflecting plate 50A is interposed, Each of the 50B produces a virtual image of the first display D1 on the opposite side of the first display D1.

Therefore, according to the display device 1W of the eighth embodiment, similarly to the display device 1A of the first embodiment, the user can be in the space A (that is, the space existing to the user with respect to the first light branching portion 4). Inside the observation of the air like I. For example, if the first reflecting plate 50A and the second reflecting plate 50B are provided on a platform such as a desk, an aerial image I that rises substantially perpendicularly from the aforementioned platform can be obtained, making it easy to observe the aerial image I. Further, a half mirror is used for the second reflecting plate 50B, and a transparent platform is used, and the virtual image is observed while viewing the aerial image I.

(ninth embodiment)

Hereinafter, a display device 1P according to a ninth embodiment of the present invention will be described. In the components of the display device 1P of the ninth embodiment shown in FIG. 15, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are denoted by the same reference numerals. Symbols, and the description thereof is omitted.

As shown in Fig. 15, the display device 1P includes a first light source S1, a first light branching portion 4A, a second light branching portion 4B, and a first returning reflection portion 2A.

In the display device 1P, the first light branching portion 4A and the second light branching portion 4B are disposed to face each other across the first light source S1. In other words, the first light source S1 is disposed between the first light branching portion 4A and the second light branching portion 4B that are disposed opposite to each other. The first light source S1 is emitted The portion (not shown) faces a space formed between the first light branching portion 4A and the second light branching portion 4B. The first light branching portion 4A and the second light branching portion 4B reflect at least a portion of the first light ray L1 as the first reflected light ray L2 and reflect at least a portion of the first reflected light ray L2. The first return-reflecting portion 2A is provided on the surface opposite to the surface (side) of the first light-dividing portion 4A in the second light-dividing portion (one light-dividing portion) 4B.

In the display device 1P of the ninth embodiment, the first light ray L1 emitted from the first light source S1 passes through a space formed between the first light branching portion 4A and the second light branching portion 4B, and is irradiated. The light diverging portion 4A or the second light diverging portion 4B is transmitted. When the first light ray L1 is irradiated to the first returning reflection portion 2A, the return light ray 13 is returned to the first light source S1 side in the direction along the surface of the second light branching portion 4B. Thereby, a plurality of aerial images I are formed in a direction substantially perpendicular to the surface of the first light branching portion 4A at a position facing the first light source S1 via the first light branching portion 4A.

Further, a virtual image is formed on the imaginary line L113 extending toward the side of the first return reflection portion 2A by the light ray L111 reflected by the second light branching portion 4B. That is, a plurality of virtual images are formed at positions facing the first light source S1 across the second light branching portion 4B.

Therefore, according to the display device 1P of the ninth embodiment, similarly to the display device 1A of the first embodiment, the user can be in the space A (that is, with respect to the first light branching portion 4 and the first light source S1). The side is the space on the opposite side.) A plurality of aerial images I are observed. Thereby, a plurality of segments of the aerial image I can be easily formed using the display device 1P, so that the display device 1P The range of applications can be expanded.

Further, the first return-reflecting portion 2A is a transparent return-reflecting element, and a transparent return-reflecting element (not shown) is provided on the opposite side of the first light-dividing portion 4A from the first light source S1, thereby forming a self-returnable reflective element (not shown). Observe the air image I in all directions.

Fig. 16 is a view showing a display device 1Q according to a first modification of the display device 1P of the ninth embodiment. The display device 1Q is a display device 1P in which a second light source S2 is disposed in a space formed between the first light branching portion 4A and the second light branching portion 4B with a space apart from the first light source S1. The emitting portion (not shown) of the second light source S2 faces the space formed between the first light branching portion 4A and the second light branching portion 4B, and is oriented opposite to the direction in which the emitting portion of the second light source S2 faces. The direction. In other words, the display device 1Q is connected to the first light source S1 side of the display device 1P in a state where the display device 1P is inverted about the direction orthogonal to the surfaces of the first light branching portion 4A and the second light branching portion 4B.

According to the display device 1Q of the first modification of the display device 1P of the ninth embodiment, the first light source S1 and the second light source S2 are used, and the aerial image I is generated by each light source, and the number of the aerial images I can be easily increased. If the virtual image of each light source is utilized, the number of aerial images I can be further increased.

Further, in the display device 1P, although the first reset reflection portion 2A and the second light branch portion 4B are connected, as in the display device 1P' shown in Fig. 17, the first reset reflection portion 2A may be paired with the second light. The branching portion 4B is disposed at a predetermined interval. Thus, the display device 1P will have a composition The degree of freedom in the configuration of the elements. Further, in the display device 1P, both sides of one transparent acrylic plate or transparent glass plate may be used as the first light branching portion 4A and the second light branching portion 4B. For example, if an LED is placed on the door frame of the glazing and the reflexed film curtain is hung on the glazing, the multiplexed aerial image I can be viewed from the outside. Further, on the side of the first light branching portion 4A, another returning reflection portion is disposed in a position where the observation of the aerial image I is not hindered, whereby the light beam L111 also forms the aerial image I.

Fig. 18 shows a display device 1R according to a second modification of the display device 1P of the ninth embodiment. In the display device 1R, the surface of the first light branching portion 4A of the display device 1N is inclined with respect to the direction along the surface of the second light branching portion 4B. In the configuration example shown in Fig. 18, the first light branching portion 4A is separated from the second light branching portion 4B so as to move from the left side to the right side of the paper surface.

According to the display device 1R of the second modification of the display device 1P of the ninth embodiment, the plurality of real images and virtual images of the first light source S1 are formed on the respective surfaces of the first light branching portion 4A and the second light branching portion 4B. The imaginary intersection of the extension line crossing is centered on the imaginary circumference. The display device 1R is an example. However, by adjusting the relative arrangement and angle of the first light branching portion 4A and the second light branching portion 4B as described above, the position of the aerial image I can be easily changed, that is, the first change can be easily performed. The position formed by the plurality of real images and virtual images of the light source S1. Further, the display device 1P of the ninth embodiment may be provided with an adjustment unit that can adjust the arrangement or angle of the first light branching portion 4A and the second light branching portion 4B.

In addition, although not shown, the display device 1P and The display device 1Q, 1P', and 1R according to the modification can form a plurality of aerial images I by using a light source (for example, a point light source, an LED, or the like) that can emit a spot-shaped first light L1, and thus can be applied. As a kaleidoscope. In the past, in order to realize a kaleidoscope for a plurality of people, it is necessary to enlarge the kaleidoscope body to a size that allows a plurality of people to simultaneously peep. However, by using the display device 1P or the like and arranging the aerial image I as a pattern viewed by the kaleidoscope, the kaleidoscope pattern is formed in the air, that is, the kaleidoscope pattern can be simultaneously observed from a wide range regardless of the arrangement of the plurality of persons and the individual.

(Tenth embodiment)

Hereinafter, a display device 1T according to a tenth embodiment of the present invention will be described. In addition, among the components of the display device 1T of the tenth embodiment shown in FIG. 20 to FIG. 23, the same components as those of the display device 1A of the first embodiment shown in FIG. 1 and the like are used. , the same symbols are denoted, and the description thereof is omitted.

Fig. 19 shows a conventional display device CT.

The display device 1T of the tenth embodiment includes a backlight 55 having a plurality of first light sources S1, a first liquid crystal panel 51, a first polarizing plate 40A, a first light branching portion 4, and a first returning reflection portion 2A.

In the display device 1T, the backlight 55 illuminates the first liquid crystal panel 51 and the second liquid crystal panel 52 from the rear of the first emission axis J1 in which the first light L1 is emitted in the emission direction E1. In the backlight 55, the first light source S1 is disposed such that the emitting portion faces the first polarizing plate 40A side. However, the number of liquid crystal panels stacked along the first exit axis J1 is not limited to two, or three the above. Further, a phase difference film may be included between the liquid crystal panels stacked along the first emission axis J1.

The first liquid crystal panel 51 is disposed at a position on the first emission axis J1. The first polarizing plate 40A is disposed between the first display D1 and the first liquid crystal panel 51 on the first emission axis J1.

The first light branching portion 4 reflects at least a portion of the first light ray L1 as the first reflected light ray L2, and transmits at least a portion of the reflected reflected light ray L13 that is reflected back by the first reset reflecting portion 2A. The first reset reflection portion 2A is disposed at a position on the second emission axis J2 that indicates the emission direction E2 of the first reflected light L2.

As shown in FIG. 19, in the conventional display device CT, in addition to the above configuration, a second liquid crystal panel is disposed between the first polarizing plate 40A on the first emission axis J1 and the first liquid crystal panel 51. 52. The second polarizing plate 40B is disposed in front of the first liquid crystal panel 51 on the first emission axis J1. The second liquid crystal panel 52 is a so-called rear liquid crystal panel. In the display device CT, the first polarizing plate 21 and the second polarizing plate 22 are disposed on the backlight 55 side with respect to the first light branching portion 4. That is, the backlight 55, the first polarizing plate 21, the first liquid crystal panel 51, the second liquid crystal panel 52, and the second polarizing plate 22 constitute a multilayer liquid crystal (or a laminated liquid crystal). The first light branching portion 4 can use a half mirror.

In the display device CT, among the first light beams L1 emitted from the first light source S through the backlight 55 in the first display D1, one of the P polarized light or the S polarized light is transmitted through the first polarizing plate 40A, and the first liquid crystal is applied to the first liquid crystal. The panel 51 and the second liquid crystal panel 52 are illuminated. Transmissive second polarizer 40B, and the first light ray L1 emitted from the first liquid crystal panel 51 is reflected by the first light branching portion 4 as the first reflected light ray L2. The first reflected light ray L2 is reflected back into the reflected light ray L13 by the first return-reflecting portion 2A, and is transmitted through the first light-dividing portion 4, and the aerial image I is formed via the first light-dividing portion 4.

As shown in FIG. 20, in the display device 1TA of the tenth embodiment, the first wave plate 21 is disposed behind the first return reflection portion 2A on the second emission axis J2. The first wave plate 21 is a so-called λ/4 wavelength plate, and the first light branching portion 4 is a reflection type polarizing plate. The direction in which the reflective polarizing plate of the first light branching portion 4 is formed is set to be parallel to the direction of the first polarizing plate 40A. That is, the first light diverging portion 4 and the first polarizing plate 40B are arranged to form parallel polarized light (or parallel Nicols). With such a configuration, the first light ray L1 emitted from the second polarizing plate 40B is formed to have a relationship of crossed polarization with respect to the first light branching portion 4, and the first light branching portion 4 is hardly transmitted. The first light branching portion 4 is reflected as the first reflected light ray L2. After passing through the first wave plate 21 and entering the first returning reflection portion 2A, the reflected reflected light L13 reflected by the first reset reflecting portion 2A forms a parallel polarized light relationship with respect to the first light branching portion 4, and The first light diverging portion 4 is transmitted, and an aerial image I is formed.

As shown in Fig. 21, in the display device 1TB according to another example of the tenth embodiment, in the configuration of the display device 1TA described above, the second polarizing plate 40B is eliminated, and the optical axis of the first wave plate 21 is made opposite to The width direction of the backlight 55 including the first light source S1 is parallel, that is, the phase The polarization direction of the first polarizing plate 40A is arranged in a direction of 45 degrees. Therefore, in the display device 1TB, the first light branching portion 4 and the first polarizing plate 40A are arranged to form parallel polarized light (or parallel Nicols polarized light) with each other. The first light ray L1 emitted from the first liquid crystal panel 51 maintains a parallel polarization relationship with respect to the first light branching portion 4. The first reflected light ray L2 reflected by the first light branching portion 4 passes through the first wave plate 21 and is incident on the first returning reflection portion 2A. Thereafter, the reflected reflected light L13 reflected by the first reset reflecting portion 2A forms a relationship of parallel parallel polarization with respect to the first light branching portion 4, and transmits the first light branching portion 4 to form the aerial image I.

As shown in Fig. 22, in the display device 1TC according to another example of the tenth embodiment, in the configuration of the display device 1TA described above, the first wavelength is disposed in front of the second polarizing plate 40B on the first emission axis J1. Board 21. Further, a second wave plate 22 is disposed behind the first return reflection portion 2A on the second emission axis J2. In the configuration example of Fig. 22, the first wave plate 21 is disposed in the vicinity of the surface of the second polarizing plate 40B on the first light branching portion 4 side, and the second wave plate 22 is disposed in the first light branching portion 4 In the vicinity of the surface of the first returning reflection portion 2A side. Further, the direction of the reflective polarizing plate forming the first light branching portion 4 is orthogonal to the direction of the first polarizing plate 40A. That is, the first light branching portion 4 and the first polarizing plate 40A are arranged to form a relationship of orthogonal polarization (or vertical Nicol polarization). That is, the optical axes of the first wave plate 21 and the second wave plate 22 are arranged at 45 degrees with respect to the polarization direction of the second polarizing plate 40B.

Therefore, in the display device 1TC, from the first liquid crystal panel The first light ray L1 emitted from 51 passes through the second polarizing plate 40B, the first wave plate 21, and the second wave plate 22, respectively, and forms a relationship of orthogonal polarization to the first light branching portion 4. The first reflected light ray L2 reflected by the first light branching portion 4 passes through the second wave plate 22 and is incident on the first returning reflection portion 2A. Thereafter, the reflected reflected light L13 reflected by the first reset reflecting portion 2A passes through the second wave plate 22 again, forming a relationship of parallel polarization to the first light branching portion 4, and transmitting the first light branching portion 4 to form The air is like I.

As shown in Fig. 23, a display device 1TD according to another example of the tenth embodiment, in the configuration of the display device 1TC described above, the second polarizing plate 40B is eliminated, and the first liquid crystal panel on the first emission axis J1 A first wave plate 21 is disposed in front of the 51. Further, the direction of the reflective polarizing plate forming the first light branching portion 4 is orthogonal to the direction of the first polarizing plate 40A, and the first light branching portion 4 and the first polarizing plate 40A are arranged to form orthogonal polarized light ( Or the relationship of vertical Nicols polarized light).

On the other hand, the first wave plate 21 and the second wave plate 22 are disposed such that the optical axes of the first wave plate 21 and the second wave plate 22 are 45 degrees with respect to the optical axis of the first liquid crystal panel 51.

Therefore, in the display device 1TD, the first light ray L1 emitted from the first liquid crystal panel 51 passes through the first wave plate 21 and the second wave plate 22, respectively, and forms a parallel polarization relationship with the first light branching portion 4. The first reflected light ray L2 reflected by the first light branching portion 4 passes through the second wave plate 22 and is incident on the first returning reflection portion 2A. Thereafter, the reflected reflected light L13 reflected by the first reset reflecting portion 2A passes through the second wave plate 22 again to form a parallel polarized light to the first light branching portion 4. And transmitting the first light diverging portion 4 to form an aerial image I.

According to the display devices 1TA, 1TB, 1TC, and 1TD of the tenth embodiment described above, the user can use the space A (that is, with respect to the first light branching unit 4, similarly to the display device 1A of the first embodiment). Observe the aerial image I in the space where the person exists. Further, in a general liquid crystal display, a polarizing plate is also disposed on the user side, and a part of the light is absorbed in the polarizing plate. In particular, according to the display devices 1TB and 1TD of the tenth embodiment, it is possible to eliminate the configuration of the polarizing plate disposed on the user side (that is, the second polarizing plate 40B) in a general liquid crystal display.

Thereby, the attenuation of the light absorbed by the polarizing plate is not formed, so that the brightness of the aerial image I is increased. Therefore, the user can easily recognize the aerial image I, and can realize a safe aerial display for protecting the eyes of the user or Multi-layer display.

Further, the first light branching portion 4 side in the laminated structure including the first light source S1 (for example, the surface of the second polarizing plate 40B on the first light branching portion 4 side in the display device 1TA) is provided. The transparent return-reflecting element (omitted from the drawing) forms an aerial image I that can be viewed from a wide range.

As described above, the display method of the aerial image to which the present invention is applied includes: the first light ray L1 is emitted from the first light source S, and the first light ray L1 is caused by the first return reflection portion 2 at the position on the first emission axis J1. a step of transmitting; reflecting at least a portion of the first light ray L1 transmitted through the first reset reflecting portion 2 by the first light branching portion 4 toward the first returning reflecting portion 2 as the first reflected light ray L2; At least a portion of the first reflected ray L2 reflected by the first return-reflecting portion 2 A step of transmitting the light diverging portion 4.

According to the above-described display method of the aerial image, the aerial image I can be observed from a wider angle.

The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the specific embodiments, and various modifications and changes can be made within the scope of the invention as described in the claims. .

For example, the configuration of the display device 1B shown in Fig. 4 can be changed as shown in Fig. 24. That is, the first polarization branching portion 25 of the display device 1B is omitted, and the fifth display D5 may be employed instead of the first display D1. As the first light branching portion 4, for example, a reflective polarizing film or the like can be used.

The in-plane of the fifth display D5 is divided into an S-wave light-emitting portion SS1 that emits the S-wave polarized first light ray L1, and a P-wave light-emitting portion SP1 that emits the P-wave polarized first light ray L1. The S-wave light-emitting portion SS1 can be, for example, a combination of an LED light source and a polarizing plate capable of emitting S-polarized light, but is not particularly limited. Further, the P-wave light-emitting portion SP1 can be, for example, a combination of an LED light source and a polarizing plate capable of emitting P-polarized light, but is not particularly limited. Further, in the fifth display D5, it is possible to adjust the polarized light (S wave or P wave) emitted from each of the specific regions in the plane of the fifth display D5 by a control unit (not shown).

According to the display device 1M described above, each of the specific regions in the plane of the fifth display D5 is adjusted to polarize the first light L1 by S waves or P waves. As shown in FIG. 24, the user can view the S wave. An aerial image I formed by polarized light or an aerial image I formed by P-wave polarized light, and viewed in the first A direct image formed by P-wave polarized light or S-wave polarized light on the five display D5. The aerial image and the direct image are separated for each pixel, and in the state where a single display D5 is used, the two-layer image can be independently displayed. Therefore, the display device 1M can be applied to a DFD (Depth-fused 3D) display which is at a position corresponding to the luminance ratio of each of the S-wave light-emitting portion SS1 and the P-wave light-emitting portion SP1. A technology that can sense depth of field.

Further, in the modification of the display device 1M, the display device 1N shown in Fig. 25 is cited. In the configuration of the display device 1N, the first wave plate 21 and the second wave plate 22 are omitted, and the fifth display D5 (first light source S1) and the first return reflection portion 2A on the first emission axis J1 are omitted. A 3D film 44 is disposed between them to replace it. As for the 3D film 44, for example, a parallax barrier, a parallax barrier, or a cylindrical mirror is exemplified.

According to the display device 1N described above, each of the specific regions in the plane of the fifth display D5 is adjusted to adjust the polarization of the first light L1 by S waves or P waves. As shown in FIG. 25, the user can view the right eye by The aerial image I formed by one of the S-wave polarized light and the P-wave polarized light, and the aerial image I formed by the other of the S-wave polarized light and the P-wave polarized light is viewed by the left eye. Therefore, the display device 1N can be applied to a DFD display in which the depth of field can be perceived at a position corresponding to the luminance ratio of each of the S-wave light-emitting portion SS1 and the P-wave light-emitting portion SP1.

Further, in the display device of the present invention, an imaging element may be disposed between the first light source S1 on the first emission axis J1 and the first return reflection portion 2. For imaging elements, for example, cylindrical mirrors or flies Eye lens, etc. As the display including the first light source S1 and/or the second light source S2, a three-dimensional display can also be used.

Further, the display device of the present invention may be housed in a casing or the like. Fig. 26 is a view showing a configuration in which a part of the configuration of the display device 1B of the present invention is housed in the casing 30. Specifically, inside the casing 30, the first light source S1, the first display D1, the first reset reflecting portion 2, and the first wave plate 21 of the display device 1B are housed. The first wave plate 21 is provided on the upper surface side of the first return reflection portion 2 in abutting manner. A reflective polarizing plate (or a reflective polarizer or the like) is provided on the top surface of the casing 30 as the first light branching portion 4.

One of the P-polarized light or the S-polarized light of the first light ray L1 emitted from the first light source S1 is reflected by the first light branching portion 4, transmitted through the first wave plate 21, and returned by the first return-reflecting portion 2 Reflected, and transmitted through the first wavelength plate 21 again. At this time, the polarization of the first light ray L1 is changed, and the other of the P-polarized light or the S-polarized light is incident on the first light-dividing portion 4 and transmitted to form the aerial image I. Therefore, the user can observe the aerial image I from a certain direction E0. The display device can be carried as described above, and the user can view the aerial image I by flexibly corresponding to the location and/or setting conditions.

Further, in the display device of the present invention, the cymbal may be disposed in front of the first light source S1 on the first emission axis J1 and/or the display including the light source described above. Here, the ruthenium (not shown) refers to a ruthenium structure in which a plurality of cross-sectional triangles are arranged in a predetermined direction in a portion (substrate) of the base. In the case of the crucible structure, for example, a cross-sectional right-angled triangle in which the right-angled portion is in contact with the substrate side is cited, and the long side is brought into contact with the substrate. Those who have a right-angled triangle and an isosceles triangle are not limited as long as they can function as a function of 稜鏡. The plurality of turns may be arranged in a direction orthogonal to the first emission axis J1, and the slice as described above may be provided on the first light source S1, the second light source S2, the display, or the like.

The cymbal is disposed in front of the first light source S1 on the first emission axis J1 or the display including the light source described above, and the first light ray L1 is refracted in a predetermined direction by the surface of the cymbal. Therefore, the angle of the surface of the crucible structure from which the substrate protrudes is appropriately set, whereby the light is concentrated at the formation position of the aerial image I, and the brightness of the aerial image I can be increased, compared to the case where the crucible is not provided. In addition, the edge portion of the air image I is considered to be blurred by the influence of scattering or diffraction of light. However, by using the cymbal, the edge of the aerial image I can also be sharpened.

Further, in the front side of the first light source S1 on the first emission axis J1 or the display including the light source, a layer of a plurality of layers or a layer having the same distance between the layers or a layer different from each other may be provided. Thereby, the refractive direction of the first light ray L1 can be set in detail.

Further, in the display device of the present invention, for example, as shown in Fig. 27, the casing 30 of the display device shown in Fig. 26 can be omitted. In this configuration, if the finger of the aerial image I (the finger f in Fig. 24) is present, the display device of the present invention can be utilized as a contact determining device that detects a large amount of scattered light. Conventionally, when the scattered light is to be detected, the camera CC is placed at a position indicated by a broken line in FIG. 27 to perform imaging. However, the camera CC is disposed at a position indicated by a solid line in the same figure, so that it can be sensitively detected and determined. Some objects are in contact with the air like I.

Further, in the display device of the present invention, a display for displaying a plurality of light sources on the surface is exemplified as an example, but the light source of the display device of the present invention is not limited to being arranged on the display. For example, in the display device 1A shown in Fig. 1, the position of the first display D1 for display is placed, and as shown in Fig. 28, the three-dimensional object SO1 is placed, and the three-dimensional object SO1 is irradiated from a projector SP or the like. The light L28 emitted from the light source can direct the reflected light from the surface of the three-dimensional object SO1 (that is, the uneven surface M1) toward the first light branching portion 4. Further, the first wave plate 21 is disposed on the first light branching portion 4 side of the first reset reflecting portion 2.

Fig. 28 illustrates the travel of the light in the display device 1Y by taking two positions S1' of the uneven surface M1 of the three-dimensional object SO1 as an example, but in the display device 1Y, an infinite number of points are formed and arranged along the uneven surface M1. In the same state of the light source, the reflected light from the uneven surface M1 acts as the first light ray L1. Among the first light beams L1, a part of the light ray L11 is reflected by the first light branching portion 4 as the reflected light ray L12, and is incident on the first returning reflection portion 2, and is in the same direction as the incident direction by the second returning reflection portion 6. The first light branching portion 4 is reflected and transmitted, and the air image I is formed at a position Q1 which is symmetrical with respect to the reflection position of the light beam L28 of the uneven surface M1 with respect to the plate surface of the first light branching portion 4 (that is, the reflecting surface).

In the display device 1Y, the unevenness of the aerial image I (actual image) is reversed with respect to the unevenness of the three-dimensional object SO1 when viewed from the front side (the side opposite to the emission direction E1), but it is correct for the user. The unevenness is recognized, that is, the unevenness of the three-dimensional object SO1 when viewed from the front side is correctly recognized. Such an optical illusion is called a Hollow face optical illusion. According to the display The apparatus 1Y can form an aerial image in which the unevenness viewed from the front side of the three-dimensional object having a complicated shape that cannot be realized under the operation of origami or paper is reversed. As an example of the three-dimensional object SO1, a fluffy toy, a skeleton model, a game machine controller, and the like are listed, but are not specifically limited. Further, by using a three-dimensional object having a complicated shape and a three-dimensional object having a large difference in height, the user is surely illusory, and is stable and easily "correctly" recognized in the same manner as the unevenness viewed from the front side of the three-dimensional object. The aerial image I after the inversion of the three-dimensional object. As a result of observing the experiment, it is understood that not only the correct unevenness can be recognized, but also the illusion that the aerial image I moves in response to the user's motion can be recognized even if the aerial image I is stationary. This effect is useful for displays that display a line-of-sight aerial image for a non-specific majority user in a place signage or remote meeting or the like.

In the display device 1Y configured as described above, the shape of the three-dimensional object SO1 is measured in advance, and a three-dimensional image sensor is disposed in the vicinity of the projector SP, and the concave-convex surface M1 from the three-dimensional object SO1 is artificially configured. The reflected light rays are directed toward the first light branching portion 4, and an aerial image I can also be formed.

[Examples]

Hereinafter, an embodiment performed to confirm the effects of the display device according to each embodiment of the present invention will be described. Further, the present invention is not limited by the following examples.

(Example 1)

In order to constitute the display device 1A shown in Fig. 1, the first light source S1 is Use LEDs that emit visible light. Further, a special display in which a plurality of first light sources S1 are arranged on the surface of the first display D1 is prepared. The first return reflection portion 2 is a return reflection sheet (product name: micro-reflection strip 6160R, manufacturer: 3M) having a unit structure 10 of about 180 μm and made of a transparent plastic. The first light branching portion 4 uses a half mirror.

In the display device 1A constructed, when the character "A" is displayed on the first display D1, as shown in Fig. 29, the first light source S1 and the aerial image I in which the character "A" is observed are confirmed.

(Example 2)

In order to constitute the display device 1E shown in Fig. 7, two first displays D1 similar to those in the first embodiment are used. The second reset reflection unit 6 uses the same return reflection sheet as the first return reflection unit 2.

In the constructed display device 1E, when the character such as "A" is displayed on the first display D1 and the character such as "B" is displayed on the first display D1, as shown in Fig. 30, the observation direction E0 is confirmed. When viewing, the aerial image I of the character "A" and the "B" formed by the second light source S2 of the second display D2 are viewed, and when viewed from the observation direction E10, the aerial image of the character "B" is observed. I and "B" formed by the first light source S1 of the first display D1.

(Example 3)

In order to constitute the display device 1G shown in FIG. 9, the first light source S1 uses an LED that emits visible light in the same manner as in the first embodiment. First complex reflection In the part 2C, a returning reflection sheet (product name: phase difference film return reflection sheet QR-1; manufacturer: SN Partners Co., Ltd.) having a corner cube type having a complex reflection structure 3A was used. The first light branching portion 4 is used for a transparent acrylic plate to which a reflective polarizing film (product name: SHM-2, manufacturer: SN Partners) is attached.

In the constructed display device 1G, when the character "T" is displayed on the fourth display D4, as shown in Fig. 31, the first light source S1 and the aerial image I in which the character "T" is observed are confirmed.

In addition, a return-reflecting sheet (product name: ultra-high-brightness reflective sheet 7610; manufacturer: 3M) having a bead-shaped return-reflecting structure 3B is used instead of the return-reflecting sheet having the return-reflecting structure 3A to constitute a display. Device 1G'.

In the constructed display device 1G', when the character "A" is displayed on the fourth display D4, as shown in Fig. 32, the first light source S1 and the aerial image I in which the character "A" is observed are confirmed.

(Example 4)

In the display device 1G of the third embodiment, the first light branching portion 4 is disposed so as to be inclined by 45 degrees with respect to the surface of the fourth display D4 (that is, the first light source S1 and the first reset reflecting portion 2C). Thus, the display device 1H shown in Fig. 11 is constructed.

In the constructed display device 1H, when the character "T" is displayed on the fourth display D4, as shown in Fig. 33, the first light source S1 and the aerial image I in which the character "T" is observed are confirmed.

(Example 5)

In the display device 1H of the fourth embodiment, the first reset reflecting portion 2C is moved toward the position P2 of the first light ray L1 in the emission direction E1 with reference to the first light source S on the first emission axis J1, and is first. The polarizing plate 40 is disposed between the first light source S1 on the emission axis J1 and the first reset reflecting portion 2C, thereby constituting the display device 1H shown in FIG. The polarizing plate 40 is a polarizing film (product name: polarizing film HN42; manufacturer: Polaroid).

In the display device 1H, when the character "T" is displayed on the fourth display D4, as shown in FIG. 34, it is confirmed that the "T" is blocked by the first light branching portion 4 and the polarizing plate 40. The first light source S1 of the character (i.e., directly transmitted light), and thus only the aerial image I of the character "T" is observed.

(Example 6)

In order to constitute the display device 1P shown in Fig. 15, the first light source S1 uses an LED that emits visible light in the same manner as in the first embodiment. Three LED strips are disposed such that the LEDs are spaced apart from each other in the width direction, and a plurality of LED strips are disposed at predetermined intervals in the longitudinal direction. In the first return-reflecting portion 2C, a double-return type reflecting sheet (product name: Nikkalite Crystal Grade (CRG), manufacturer: NIPPON CARBIDE Industries Co., Ltd.) having a complex reflection structure 3A is used. The first light-dividing portion 4 is used for a transparent acrylic plate to which a reflective polarizing film (product name: SHM-2, manufacturer: SN Partners, Inc.) is attached.

The constructed display device 1P, as shown in Fig. 35, confirms observation The aerial image I and the virtual image formed by the plurality of illumination points corresponding to the LEDs arranged in the LED strip.

Further, in order to form the display device 1Q including the first light source S1 and the second light source S2 as shown in Fig. 16, an LED strip in which LEDs are disposed on both sides is used. The two-sided LED strip as described above corresponds to the arrangement in which the first light source S1 and the second light source S2 shown in Fig. 16 are separated by the thickness of the substrate. The light source was placed on both sides of the belt as described above, and as shown in Fig. 36, it was confirmed that the aerial image I and the virtual image were observed from both sides of the LED strip.

(Comparative Example 1, Example 7)

In order to form the display devices 1TA, 1TB, 1TC, and 1TD shown in FIGS. 20 to 23, a special color display (first liquid crystal display 51 and second display) provided with a plurality of LEDs emitting visible light is prepared as the first light source S1. 52). Specifically, as the backlight 55, the first liquid crystal display 51, and the second display 52, a high-precision high-brightness LED panel (a pitch of 4 mm, a surface mount package type, a product name: P4-LED panel, a distributor: WAN Color) is used. And a polysilicon TFT liquid crystal panel (product name: LTM10C348S, manufacturer: Toshiba Corporation) was decomposed. The first return reflection portion 2A is a return reflection sheet (product name: Nikkalite Crystal Grade (CRG); manufacturer: NIPPON CARBIDE Industries Co., Ltd.) having a unit structure 10 of about 180 μm and made of a transparent plastic. The first light diverging portion 4 is a semi-mirror (reflectance ‧ transmittance of about 50%) or a reflective polarizing film (product name: SHM-2, manufacturer: SN Partners, Inc.). The first polarizing plate 40A and the second polarizing plate 40B are polarizing plates taken out by decomposing the polycrystalline TFT liquid crystal panel described above or a polarizing plate commercially available as a single product (product name: HN42; manufacturer: Polaroid). A commercially available λ/4 wavelength plate is used for the first wave plate 21 and the second wave plate 22.

The display device CT shown in FIG. 19 and the display device 1T shown in FIGS. 20 to 23 are respectively constructed by using the above-described respective constituent elements, and are formed by the color image shown in FIG. 37 displayed on the special color display. Each of the aerial images I is used in a photographic camera (product name: D5500; manufacturer: Nikon Co., Ltd.) with lens (product name: FS DX NIKKOR 18-140mm, f/3.5-5.6G ED VR; manufacturer: Nikon Co., Ltd.) ) to take pictures. The F value of the photographic camera is set to 4.8, and the shutter speed at the time of shooting is set to 1/10 (ISO: 400).

In addition, both the 37th and 42nd drawings are displayed by converting gray information into grayscale images of gray scales.

The display device CT constructed as a comparative example uses a half mirror as the first light branching portion 4, and as shown in Fig. 38, an aerial image I corresponding to the image of the special color display is photographed.

The display device 1TA constructed as an embodiment uses a reflective polarizing plate instead of a half mirror as the first light branching portion 4, and is configured as described above, so that as shown in FIG. 39, the image is compared. The aerial image I shown in Fig. 38 also has a bright aerial image I.

Further, in the constructed display device 1TB, the first polarizing plate 40A is attached with a reflective polarizing film on a transparent acrylic plate (product) Name: SHM-2, manufacturer: SN Partners, Inc.), and does not use the second polarizing plate 40B, thereby suppressing the loss of the first light L1, and as shown in Fig. 40, the photograph is shown in Fig. 39. Also clear air like I.

Further, in the constructed display device 1TC, as shown in Fig. 41, an aerial image I of the same size as that of the display device 1TA shown in Fig. 39 is photographed.

Further, in the constructed display device 1TD, the above-described reflective polarizing film is used for the first polarizing plate 40A, and the first wave plate 21 and the second wave plate 22 are used without using the second polarizing plate 40B, thereby As shown in Fig. 42, the aerial image I which is brighter and slightly lower than the aerial image I of the display device 1TC shown in Fig. 41 is photographed.

(Example 8)

In the display device 1TB constructed in the seventh embodiment, an image of a character of "F" formed by a single color is displayed on the first liquid crystal panel 51, and a monochrome image is formed on the second liquid crystal panel 52. The air image I at the time of the image of the character "B". The F value of the photographic camera was changed to 3.5, and the shutter speed at the time of shooting was maintained at 1/10 (ISO: 400).

The aerial image I formed in the 43rd, 44th, and 45th drawings is confirmed as a result of photographing in the left direction, the front direction, and the right direction of the air image I direction. The aerial image I taken from the front direction is the brightest and clearest. However, when shooting from the positive direction and the right direction, it is confirmed that the air image I can be clearly read by the characters "F" and "B". Observing the parallax corresponding to the interval of the second layer from the left and right, confirming that the air with depth of field is formed Like I.

In the above-described configuration, instead of the characters of "F" and "B", a strip-shaped monochrome dot pattern (drawing surface) that continuously changes in density in the left-right direction in the direction of the air image I is displayed, and is photographed. The air formed is like I. It is confirmed that each of the aerial images I shown in Fig. 46, Fig. 47, and Fig. 48 is formed. Further, it was observed that the monochrome dot pattern has a depth of field in the oblique direction.

(Example 9)

In the display device 1TD constructed in the seventh embodiment, as shown in FIG. 49, the wavelength plate 53 can be disposed between the first liquid crystal panel 51 and the second liquid crystal panel 52 on the first emission axis J1. A tone correction test was performed. The wavelength plate 53, a so-called λ/2 wavelength plate, gives a phase difference of π toward the direction of the electric field vibration of the incident light.

In Fig. 50, it is shown that the aerial image I in the display device 1TD is photographed before the configuration of the wavelength plate 53. On the other hand, in FIG. 51, the wavelength plate 53 is disposed between the first liquid crystal panel 51 and the second liquid crystal panel 52 on the first emission axis J1 such that the optical axis of the wavelength plate 53 is along with respect to the backlight 55. The aerial image I captured when the wavelength plate 53 is arranged such that the width direction forms a direction of 45 degrees. As is apparent from Fig. 51, when the wavelength plate 53 is disposed, the coloring phenomenon due to the wavelength dispersion is eliminated, and the color of the portion where the red aerial image I was formed before the arrangement of the wavelength plate 53 disappears. That is, although both Fig. 49 and Fig. 50 are displayed in grayscale images, the "stained portion" shown in Fig. 51 is the same as the first The "colored portion" shown in Fig. 50 is also darkened, and the above-described coloring phenomenon can be confirmed.

(Embodiment 10)

In order to form the display device shown in FIG. 28, the three-dimensional object A shown in the "projection image" of Fig. 52 is individually placed on the three-dimensional object SO1 at the position corresponding to the installation position of the first display in the display device 1A. : The skeleton of the dinosaur, the three-dimensional object B: paper cup, three-dimensional object C: the bear toy, the three-dimensional object D: the game controller, and the general projector (product name: PT-DX820JW, manufacturer: Panasonic Corporation) Each of the three-dimensional objects S01 is irradiated with light. The first reset reflection unit 2 is a 复-type return-reflecting sheet (product name: Nikkalite Crystal Grade (CRG), manufacturer: NIPPON CARBIDE Industries, Ltd.). The first light-dividing portion 4 is formed by using a transparent acrylic-attached reflective polarizing film (product name: SHM-2, manufacturer: SN Partners).

According to the constructed display device 1Y, as shown in the "air image" of Fig. 52, when the three-dimensional object A: the skeleton of the dinosaur and the three-dimensional object B: the paper cup are arranged, it is confirmed that the aerial image corresponding to each solid is observed. I.

As is apparent from the above-described embodiments, according to the display device to which the present invention is applied, the aerial image I can be observed from a wider angle, and the effects of various configurations can be obtained.

1A‧‧‧ display device

2, 2A‧‧‧ first return to the reflection department

4‧‧‧First Light Differences Department

6‧‧‧Second Rehabilitation

A‧‧‧ space

D1‧‧‧ first display

E0‧‧‧ viewing direction

E1, E2‧‧‧ shooting direction

I‧‧‧ aerial image

J1‧‧‧first shot axis

J2‧‧‧second reflection axis

L1‧‧‧First light

L2‧‧‧First reflected light

L11, L15, L18‧‧‧ rays

L12, L13, L16‧‧‧ reflected light

P2, P4, P6, PS1, Q1, Q2‧‧‧ position

S1‧‧‧ first light source

Z1, Z2‧‧‧ area

θ 1A‧‧‧ angle

Claims (20)

A display device includes: a first light source; a first return reflection portion disposed at a position on a first emission axis that displays an emission direction of the first light emitted from the first light source; and a first light divergence The portion reflects at least a portion of the first light ray emitted from the first light source into a first reflected ray, and transmits at least a portion of the first reflected ray reflected by the first reset reflecting portion. The display device according to claim 1, wherein the first reset reflection portion is disposed in an emission direction of the first light ray with respect to the first light source on the first emission axis, and is transmissive The aforementioned first light. The display device according to claim 1, wherein the first reset reflection portion is disposed on a side opposite to an emission direction of the first light ray with respect to the first light source on the first emission axis. The first light source is disposed on the first emission axis at a position such that the non-arranged portion of the first light source transmits the first light and the first reflected light. The display device according to claim 1, wherein the first reset reflection portion is disposed at a position where the first light source is disposed on the first emission axis. The display device according to any one of claims 1 to 4, wherein the first reflected light is incident on the first return reflection portion. The display device according to claim 5, wherein the first reflected light is incident on the first reset reflection portion, and the display device further includes: a first wavelength plate disposed in the first emission a second wave plate disposed between the first light source and the first return reflection portion on the shaft; and the second wave plate disposed in the emission direction of the first light beam with respect to the first return reflection portion on the first emission axis; And the first polarization branching portion is disposed between the first light source and the first wavelength plate disposed on the first emission axis, and is capable of transmitting a specific polarization; the first wavelength plate and the second wavelength plate are The direction of the electric field vibration of the light incident on each of them gives a phase difference of (π/2). The display device according to any one of claims 1 to 5, further comprising: a second return-reflecting portion disposed to display the first reflected light reflected by the first light branching portion The position on the second exit axis of the exit direction. The display device according to claim 1, further comprising: a first wavelength plate, which is disposed on the first emission axis a first light source is disposed between the first return-reflecting portion; and a second wavelength plate is disposed in the emission direction of the first light ray based on the first return-reflecting portion on the first emission axis; the first polarized light is divergent a portion disposed between the first light source and the first wavelength plate on the first emission axis and capable of transmitting a specific polarization; and the second light source is reflected by the first light branching portion a second light beam is emitted from a side opposite to the direction in which the first reflected light is emitted; the second returning reflection portion is disposed at a position on the third emission axis that displays an emission direction of the second light, and can reflect the first reflected light repeatedly And transmitting the second light; the second light branching portion reflects at least a portion of the second light ray transmitted through the second reset reflecting portion into a second reflected light, and the second returning reflecting portion is configured by the second returning reflecting portion Transmitting at least a portion of the second reflected light reflected by the reflected reflection; the third wavelength plate is disposed by the second light source and the second reset reflecting portion disposed on the third emission axis The fourth wavelength plate is disposed in the emission direction of the second light ray on the basis of the second return reflection portion on the third emission axis, and the second polarization branch portion is disposed on the third emission axis Between the foregoing second light source and the aforementioned third wavelength plate, and transmissive The specific polarization orthogonal to the polarized light; the first wavelength plate, the second wavelength plate, the third wavelength plate, and the fourth wavelength plate are given to the electric field vibration direction of the light incident on each of (π/2) The phase difference. The display device according to claim 1, further comprising: a second light source that emits the second light toward the opposite side of the emission direction of the first reflected light reflected by the first light branching portion; And the second returning reflection portion is disposed at a position on the third emission axis that displays the emission direction of the second light, and can reflect the first reflected light and can transmit the second light. The display device according to claim 2, wherein the imaging element is disposed between the first light source and the first return reflection portion on the first emission axis. A method for displaying an aerial image, comprising: emitting a first light from a first light source, and causing the first light to be reflected by the first returning reflection in a position on a first emission axis that displays an emission direction of the first light a step of transmitting; reflecting at least a portion of the first ray transmitted through the first reset reflecting portion as a first reflected ray by the first light branching portion toward the first complex reflecting portion; and The step of transmitting at least a portion of the first reflected ray reflected by the first returning reflection portion from the first light branching portion. A display device includes: a first light source; a first light branching portion that reflects at least a portion of the first light ray emitted from the first light source as a first reflected light; and a first return-reflecting portion a position on the second reflection axis that displays an emission direction of the first reflected light reflected by the first light branching portion; the first light branching portion is oriented from the outer periphery toward the center The first light branching portion is curved convexly toward the side opposite to the side on which the first light source and the first returning reflecting portion are disposed. A display device includes: a first light source; a first wavelength plate, the first emission from a side of one of the first light sources along a direction of emission of a first light emitted from the first light source Extending from the axis; the first return-reflecting portion is disposed on the opposite side of the first wave plate toward the side of the first light source; the first reflecting plate is along the other side of the first light source Extending from the first exit axis; the first light branching portion is disposed between the front end portion of the first wave plate and the front end portion of the first reflecting plate; and the second reflecting plate is from the first reflecting plate The front end portion extends in the same direction as the extending direction of the first reflecting plate via the first light branching portion; The first wave plate is given a phase difference of (π/2) toward the direction of the electric field vibration of the light incident on each of them. A display device includes: a first light source; and a first light branching portion and a second light branching portion disposed to face each other across the first light source; and the first light source emitting portion is formed to face In the space between the first light branching portion and the second light branching portion, the first light branching portion and the second light branching portion are at least a part of the first light ray emitted from the first light source Reflecting into the first reflected light and reflecting at least a portion of the first reflected light, and opposing the light branching portion of the other of the first light branching portion and the second light branching portion The first returning reflection portion is provided on the opposite side of the side. A display device includes: a first light source; a first liquid crystal panel disposed at a position on a first emission axis that displays an emission direction of the first light emitted from the first light source; and a first polarizing plate Between the first light source disposed on the first emission axis and the first liquid crystal panel; the first light branching portion reflects at least a portion of the first light emitted from the first light source into a first reflected light And causing the first reflected light to be reflected back by the first reset reflecting portion At least a portion of the line is transmissive; and the first return-reflecting portion is disposed at a position on the second emission axis that displays an emission direction of the first reflected light. The display device according to claim 15, wherein a second liquid crystal panel is disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, on the first emission axis a second polarizing plate is disposed in front of the first liquid crystal panel, and a first wave plate is disposed behind the first return reflection portion on the second emission axis, and the first wavelength plate is an electric field toward the incident light. The vibration direction is given a phase difference of (π/2), and the first light branching portion is a reflective polarizing plate, and the direction of polarization of the reflective polarizing plate is parallel to a direction of polarization of the first polarizing plate. The display device according to claim 15, wherein the second liquid crystal panel is disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, and the second liquid emitting panel is on the second emission axis A first wave plate is disposed behind the first return-reflecting portion, and the first wave plate is provided with a phase difference of (π/2) toward an electric field vibration direction of the incident light, and the first light branching portion is a reflective polarizing plate. The direction of polarization of the reflective polarizing plate is formed in accordance with the foregoing The direction of polarization of a polarizing plate is parallel, and the optical axis of the first wave plate is arranged parallel to the width direction of the first light source. The display device according to claim 15, wherein the second liquid crystal panel is disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, and the aforementioned first emission axis a second polarizing plate and a first wave plate are disposed in front of the first liquid crystal panel, and a second wave plate is disposed behind the first return reflecting portion on the second emission axis, and a direction of polarization of the reflective polarizing plate is disposed. The direction of the polarization of the first polarizing plate is orthogonal to each other, and the optical axes of the first wave plate and the second wave plate are disposed perpendicular to the width direction of the first light source. The display device according to claim 15, wherein the second liquid crystal panel is disposed between the first polarizing plate and the first liquid crystal panel on the first emission axis, and the aforementioned first emission axis a first wave plate is disposed in front of the first liquid crystal panel, and a second wave plate is disposed behind the first return reflection portion on the second emission axis, and a direction of polarization of the reflective polarizer is the first The direction of the polarized light of the polarizing plate is orthogonal, and the optical axis of the first wave plate and the second wave plate are coupled The direction is parallel to the width direction of the first light source. The display device according to any one of claims 1 to 10, wherein a plurality of edges are formed in a direction orthogonal to the first exit axis. The cymbal of the mirror is disposed in front of the first light source on the first emission axis.