CN106842568A

CN106842568A - Clairvoyant type holographic display device and head-mounted display apparatus

Info

Publication number: CN106842568A
Application number: CN201610971761.0A
Authority: CN
Inventors: 成基荣; 金允泰; 安重权; 李泓锡
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2015-10-28
Filing date: 2016-10-28
Publication date: 2017-06-13
Anticipated expiration: 2036-10-28
Also published as: KR20170049358A; CN106842568B; KR102606340B1

Abstract

The present invention provides a kind of Clairvoyant type holographic display device and head-mounted display apparatus.Clairvoyant type holographic display device includes relay optical system, and it zooms in or out and transmit the hologram produced by spatial light modulator；Noise removing filter, noise is removed from the diffraction light of the hologram transmitted via relay optical system；And optical path converter, change from relay optical system transmission it is holographic compared with diffraction light path and at least one of the path of exterior light, so as to simultaneously or selectively see hologram and outside.

Description

Clairvoyant type holographic display device and head-mounted display apparatus

Cross-Reference to Related Applications

This application claims the korean patent application No.10-2015- submitted on October 28th, 2015 to Koran Office 0150272 and on May 4th, 2016 submit to korean patent application No.10-2016-0055766 rights and interests, these application Disclosure as being incorporated herein by reference.

Technical field

This disclosure relates to a kind of holographic display device, relates more specifically to a kind of Clairvoyant type holographic display device, via this Equipment, while or selectively seeing hologram and outside.

Background technology

As many three-dimensional (3D) films are displayed, carry out to grinding on the related technology of 3D rendering display device Study carefully.For example, energetically performing grinding to the equipment by using spatial light modulator (SLM) real-time enforcement high quality hologram Study carefully.

Many researchs of the head mounted display (HMD) and Related product to implementing virtual reality (VR) are introduced in the recent period. Major company frequently occupies the venture company with VR technologies.However, be the technology based on stereoscopic vision for the conventional H MD of VR, Conflict because vision influx is adjusted, this causes visual fatigue.When spatial interaction technology is applied to, for VR conventional H MD also Cause many problems.

The content of the invention

There is provided the display device that can implement Clairvoyant type hologram three-dimensional (3D) image.

Head mounted display (HMD) is shown there is provided personal Clairvoyant type 3D.

According to the one side of the disclosure, there is provided Clairvoyant type holographic display device, including light source, there is provided light；Spatial light is adjusted Device processed, makes light that diffraction to occur, and reproduce hologram；Relay optical system, zooms in or out and transmits and produced by spatial light modulator Raw hologram；Noise removing filter, noise is removed from the diffraction light of the hologram transmitted via relay optical system；With And optical path converter, change from the path of diffraction light and the path of exterior light of the hologram of relay optical system transmission At least one, and diffraction light and exterior light are transferred to same area.

Clairvoyant type holographic display device may also include：Collimater, collimated light is converted to by the light provided by light source.

Spatial light modulator may include amplitude spatial light modulator, phase spatial light modulator or composite space light modulation Device.

Relay optical system may include the first optical element, and the hologram modulated by spatial light modulator incides the first light Learn element；And second optical element, the incidence surface of the first focus with the emission surface side near the first optical element Second focus of side.First optical element can have the first focal length, and the second optical element has different from the first focal length second Focal length.Noise removing filter may be provided at the first near focal point of the emission surface side of the first optical element.Noise remove is filtered Ripple device may include pin hole.

Clairvoyant type holographic display device may also include：Field optics element, focuses on the hologram from relay optical system transmission.

Field optics element be may be provided near image plane, and image plane is imaged on from the hologram of relay optical system transmission In.Or, field optics element may be disposed so that image plane is located at focal position and the field optics of the incidence surface side of field optics element Between the incidence surface of element, it is imaged in image plane from the hologram of relay optical system transmission.Field optics element can be arranged It is that image plane reimaging is the setting virtual image, is imaged in image plane from the hologram of relay optical system transmission.

Field optics element can neighbouring optical path converter setting.Can pass through from the size of the hologram of relay optical system transmission Change the distance between relay optical system and field optics element to adjust.

Optical path converter may include beam splitter, and it includes first surface, second surface, the 3rd surface and is arranged on inside Beam separating film, first surface, incidence of external light to second are incided from the diffraction light of the hologram of relay optical system transmission Surface, the 3rd surface is relative with second surface, the diffraction light of the hologram that the reflection of beam separating film is transmitted via first surface At least a portion makes at least a portion for the exterior light transmitted via second surface be transmitted through the 3rd surface to the 3rd surface, Field optics element includes the object lens that the first surface of neighbouring optical path converter is set.

Optical path converter may include beam splitter, and it includes first surface, second surface, the 3rd surface, the 4th surface and sets Beam separating film internally is put, first surface, exterior light are incided from the diffraction light of the hologram of relay optical system transmission Second surface is incided, the 3rd surface is relative with second surface, and the 4th surface is relative with first surface, beam separating film reflection warp At least a portion of the diffraction light of the hologram transmitted by first surface is to the 4th surface, then secondary reflection is via the 4th surface transmission Hologram diffraction light at least a portion to the 3rd surface, and make at least one of exterior light transmitted via second surface Divide and be transmitted through the 3rd surface, field optics element includes the recessed speculum that the 4th surface of neighbouring optical path converter is set.

Optical path converter may include partial mirror, field optics element be located at relay optical system and optical path converter it Between, neighbouring optical path converter.

Optical path converter may include beam splitter, and it includes first surface, second surface, the 3rd surface and is arranged on inside Beam separating film, first surface, incidence of external light to second are incided from the diffraction light of the hologram of relay optical system transmission Surface, the 3rd surface is relative with second surface, the diffraction light of the hologram that the reflection of beam separating film is transmitted via first surface At least a portion for the exterior light transmitted via second surface is transmitted through the 3rd surface by least a portion to the 3rd surface, Wherein, beam separating film has recessed curved surface shape relative to first surface, is passed from relay optical system with reflecting and focusing on Defeated hologram is to the 3rd surface.

Beam separating film can be polarization-selective reflection film.

Optical path converter may be disposed to beam separating film and be arranged near image plane, from the holography of relay optical system transmission Scheme in the image plane of imaging.

Clairvoyant type holographic display device may also include light beam selectivity optical element, and its focusing diffraction light simultaneously makes exterior light saturating Penetrate and pass through.Light beam selectivity optical element can be the cemented lens with isotropic lens and anisotropy lens, wherein, Cemented lens has just (+) value relative to the refractive index of diffraction light, and cemented lens is zero relative to total refractive index of exterior light.Light Beam selectivity optical element may include the first and second transparent base layers relative to each other and be placed in the first and second transparent bases Liquid crystal layer between bottom, and controlled by with the electrode being arranged at least one surface of the first and second transparent base layers Liquid crystal layer and optionally have polarization characteristic.Light beam selectivity optical element may include that relative to each other first and second are transparent Basalis and the liquid crystal layer being placed between the first and second transparent base layers, and be by saturating with being arranged on first and second On at least one surface of bright basalis liquid crystal control electrode layer and optionally with refractive index active liquid crystal lens.

Optical path converter may include the active reflector of the transmission amount for adjusting exterior light.Active reflector may include that liquid crystal is filtered One of ripple device and electrochromic device.

Optical path converter can be arranged near the pupil of user.

Clairvoyant type holographic display device may be mounted in the head installation housing being worn on observer's head, for a left side At least one in eye and right eye.

According to another aspect of the present disclosure, there is provided the wear-type of display hologram shows (HMD) equipment, including left eye is saturating Depending on type holographic display device；Right-eye perspective type holographic display device；And connection left-eye perspective type holographic display device and right eye The framework of Clairvoyant type holographic display device, wherein, left-eye perspective type holographic display device and right-eye perspective type holographic display device Include：Light source, there is provided light；Spatial light modulator, makes optical diffraction, and reproduce hologram；Relay optical system, zooms in or out And transmit the hologram produced by spatial light modulator；Noise removing filter, from the holography transmitted via relay optical system Noise is removed in the diffraction light of figure；And optical path converter, change the diffraction light of the hologram transmitted from relay optical system At least one of path of path and exterior light, and by diffraction light and outside optical transport to same area.

When HMD device is worn in user's head, the optical path converter of left-eye perspective type holographic display device can be neighbouring User's left eye is set, and the optical path converter of right-eye perspective type holographic display device can be set with proximal subscribers right eye.

The optical path converter of left-eye perspective type holographic display device and the light path converting of right-eye perspective type holographic display device The distance between device can be adjusted.

Brief description of the drawings

With reference to accompanying drawing, from the description below of embodiment, these and/or other side are apparent from and are more readily understood, attached In figure：

Fig. 1 is the schematic diagram of the example of the Clairvoyant type holographic display device being had on by user according to embodiment；

Fig. 2 is the schematic diagram of the optical system of the Clairvoyant type holographic display device of Fig. 1；

Fig. 3 is the figure of the example of the layout of object lens；

Fig. 4 is the figure of another example of the layout of object lens；

Fig. 5 is the figure of the operation of the layout of the object lens for describing Fig. 4；

Fig. 6 is the schematic diagram of the optical system of the Clairvoyant type holographic display device according to another embodiment；

Fig. 7 is the schematic diagram of the optical system of the Clairvoyant type holographic display device according to another embodiment；

Fig. 8 is the schematic diagram of the optical system of the Clairvoyant type holographic display device according to another embodiment；

Fig. 9 is the schematic diagram of the optical system of the Clairvoyant type holographic display device according to another embodiment；

Figure 10 is the figure of the operation of the Clairvoyant type holographic display device for describing Fig. 9；

Figure 11 is the schematic diagram of the optical system of the Clairvoyant type holographic display device according to another embodiment；

Figure 12 is the schematic diagram of the optical system of the Clairvoyant type holographic display device according to another embodiment；

Figure 13 is the schematic diagram of the optical system of the Clairvoyant type holographic display device according to another embodiment；

Figure 14 be Figure 13 Clairvoyant type holographic display device in use light beam selectivity optical element example figure；

Figure 15 A to 15C be Figure 13 Clairvoyant type holographic display device in use light beam selectivity optical element example Figure；

Figure 16 is that (Clairvoyant type is holographic aobvious for head mounted display (HMD) equipment for being had on by user according to another embodiment Show equipment) example schematic plan view；And

Figure 17 is the schematic diagram of the optical system of the equipment of the HMD of Figure 16.

Specific embodiment

Hereinafter, refer to the attached drawing, describes Clairvoyant type holographic display device in detail.Identical reference refers to identical Element, in the accompanying drawings, explains to understand and being easy to, and exaggerates the size of element.

Fig. 1 is the example of the Clairvoyant type holographic display device 100 being had on by user (observer) 10 according to embodiment Schematic diagram.Fig. 2 is the schematic diagram of the relay optical system 140 of the Clairvoyant type holographic display device 100 of Fig. 1.

Referring to Fig. 1, the Clairvoyant type holographic display device 100 according to embodiment can be wearable device, such as be worn over use The glasses of the head of family 10.For example, Clairvoyant type holographic display device 100 can have the shape of one-eyed glasses, via the one-eyed glasses, Two the one of eyes 11 (such as left eye 11L shown in Fig. 1) of user 10 see hologram and outside.As another example, thoroughly Can have depending on type holographic display device 100 and be attached to one of the eyepiece (eye lens) of glasses (such as left eye 11L shown in Fig. 1) Shape.

Clairvoyant type holographic display device 100 may include housing 190, the optical system in housing 190 and control light The control unit 900 of system.Control unit 900 may be provided at the outside or inside of housing 190.

Referring to Fig. 2, the Clairvoyant type holographic display device 100 of the present embodiment may include to provide the light source cell 110 of light, be formed The spatial light modulator 120 of hologram, the relaying light for zooming in or out and transmitting the hologram produced by spatial light modulator 120 System 140 and optical path converter 180, optical path converter change the diffraction of the hologram from the transmission of relay optical system 140 At least one of the path of light and the path of exterior light Lo, and the diffraction light of hologram and exterior light Lo are transmitted to same zone Domain.Clairvoyant type holographic display device 100 may also include noise removing filter 150, and it is from being transmitted by relay optical system 140 Noise is removed in the diffraction light of hologram.Clairvoyant type holographic display device 100 may also include object lens 170, and it is collimated from relaying light The hologram of the transmission of system 140.Clairvoyant type holographic display device 100 may also include control unit 900, and its control spatial light is adjusted Device processed 120 is producing hologram.

Light source cell 110 may include light source 111.Light source 111 may include laser diode (LD), with to spatial light modulator 120 provide the light with high spatial coherence.However, if there is certain space degree of coherence by the light that light source 111 is provided, by In light by the abundant diffraction of spatial light modulator 120 and modulation, light source 111 may include light emitting diode (LED).Light source 111 can The array of red, green and blue-light source is configured to, as described later, implementation color hologram is driven with by the RGB time-divisions.Example Such as, light source 111 may include the array of multiple lasers or LED.Except LASER Light Source or LED, light source 111 may include any other Light source, as long as launching the light with spatial coherence.

Light source cell 110 can illuminate collimation directional light.For example, during collimation lens 112 can also be provided at light source cell 110, It is directional light with by the light launched from light source 111 collimation.

Spatial light modulator 120 can be modulated at it according to the holographic data provided by control unit 900 and form complete on surface Breath pattern.The light for inciding spatial light modulator 120 can be changed into diffraction light, and diffraction light is modulated to holographic ripple by hologram pattern Preceding image.As described later, the diffraction light on spatial light device 120 with the image of holographic wavefront is caused via relay optical System 140 and object lens 170 see hologram by diffraction interference in peep hole (VW).

Spatial light modulator 120 may include amplitude spatial light modulator, and it only performs Modulation and Amplitude Modulation, so as to prevent resolution ratio Deteriorate, and when 2D images are formed, suppress the deterioration of 2D images.For example, spatial light modulator 120 may include that numeral is micro- anti- Penetrate lens device (DMD), liquid crystal over silicon (LCoS) or semiconductor light modulator.The composite space light of both phase modulation and amplitude is adjusted The phase spatial light modulator of device processed or phase modulation also acts as spatial light modulator 120.

The optical branching device 130 of branch's incident light and launching light may be located between light source 111 and spatial light modulator 120. In this respect, incident light and launching light can refer respectively to incide the light of spatial light modulator 120 and from spatial light modulator The light for sending.Optical branching device 130 can allow the light from the incidence of light source 111 to pass through and advance to spatial light modulator 120, and can To be directed towards the beam splitter that relay optical system 140 reflects the light reflected from spatial light modulator 120.As another example, light Splitter 130 can be partial mirror (half mirror).

The light illuminated by light source cell 110 can be polarization.Light source 111 can polarized light-emitting, or light source 110 can wrap Polarization filter is included to polarize the light launched from light source 111.In this case, optical branching device 130 can be polarization beam apparatus.It is all As the polarization conversion member of 1/4 polarization plates can also be provided between optical branching device 130 and spatial light modulator 120, with distinguish from The polarization of light of the optical branching device 130 to the polarization of the light of spatial light modulator 120 and from the reflection of spatial light modulator 120, from And more effectively branch's incident light and launching light.

Reflecting member 113 may be located between light source 111 and optical branching device 130.Reflecting member 113 can be total reflection rib Mirror or pure speculum (mere mirror).Reflecting member 113 can be set for optical component (such as light source 111 etc.) in housing Appropriate layout in 190 confined space.

Relay optical system 140 can be the 4f optical systems of modification, and it zooms in or out and transmits by space light modulation The image of the holographic wavefront that device 120 is produced.For example, relay optical system 140 may include first relaying with the first focal length f1 Lens 141 and the second relay lens 143 with the second focal length f2.First relay lens 141 can be arranged to space light modulation The modulation surface of device 120 is positioned at the position of the first focal length f1 of the incidence surface side of the first relay lens 141 or the position Near putting.The second focal length f2 that second relay lens 143 can be arranged to its incidence surface side is positioned at the first relay lens 141 Emission surface side the first focal length f1 position at or the position near.According to the optical layout of relay optical system 140, The image of the holographic wavefront produced on the modulation surface of spatial light modulator 120 can be imaged on the second relay lens 143 At second focal length f2 of emission surface side.The image of the holographic wavefront being imaged by relay optical system 140 is referred into below The SLM (the 172 of Fig. 3) of picture.

First focal length f1 can be different from the second focal length f2.For example, the second focal length f2 can be more than the first focal length f1, so that Relay optical system 140 can zoom into the SLM 172 of picture.Or, the first focal length f1 can be more than the second focal length f2, so that in The SLM 172 of picture can be dwindled into after optical system 140.As described later, due to be imaged SLM 172 size and visual angle (VA) proportional, VA can be changed by zooming in or out the SLM 172 of imaging.

Noise removing filter 150 may be provided at the first focal length f1 and of the emission surface side of the first relay lens 141 At the position that second focal length f2 of the incidence surface side of two relay lens 143 overlaps each other or near the position.Noise remove Wave filter 150 can be such as pin hole.Noise removing filter 150 can be placed on the first relaying of relay optical system 140 At first focal length f1 of lens 141, and the light in addition to expecting order of diffraction light can be stopped, so as to remove due to space light modulation The noise that the dot structure of device 120 causes, such as diffraction pattern or multiple diffraction.

As described above, the image of the holographic wavefront formed on the modulation surface of spatial light modulator 120 can be by relaying Optical system 140 forms the SLM 172 of imaging.Object lens 170 can in the SLM 172 of the front focal imaging of pupil 13 of user 10, Peep hole is formed with the front of pupil 13 in user 10.Peep hole can be understood as the space that user 10 sees hologram.After a while The layout of object lens 170 is described with reference to Fig. 3.

Optical path converter 180 can be beam splitter, the diffraction light that its reflection is transmitted from relay optical system 140, and allow Exterior light Lo is transmitted through.Optical path converter 180 can be configured to incide and be transmitted through the light of the first incidence surface 180a Beam reflects from the beam separating film 181 inside optical path converter 180, and is transmitted into emitting surface 180c, incides and saturating Penetrate and beam separating film 181 is transmitted through by the light beam of the second incidence surface 180b, and be transmitted into emitting surface 180c.

As an example, beam separating film 181 can be partial mirror.In this case, illuminated by light source cell 110 Light need not be confined to polarised light.

Used as another example, when the light illuminated by light source cell 110 can be polarized, the beam separation of optical path converter 180 is thin Film 181 can be polarization-selective reflection film.If the polarization direction for inciding the light beam of the first incidence surface 180a is One polarization direction, the then polarization direction for being orthogonal to the first polarization direction is the second polarization direction, and beam separating film 181 can have inclined Shake selectivity, light (referring hereinafter to the light of the first polarization direction) reflection with the first polarization direction, with the second polarization Light (referring hereinafter to the light of the second polarization direction) transmission in direction.Because exterior light Lo has the first polarized component and second Both polarized components, if so beam separating film 181 is only contained in from the second incidence surface 180b with polarization selectivity The second polarized component in incident exterior light Lo can pass through beam separating film 181, reach the pupil 13 of eyes of user 11.

First incidence surface 180a of optical path converter 180 can neighbouring object lens 170.The transmitting table of optical path converter 180 Face 180c can proximal subscribers eyes 11 pupil 13.

Optical path converter 180 can be change from relay optical system 140 transmission hologram diffraction light path with At least one of and the path of exterior light Lo, and diffraction light and exterior light Lo are transferred to same area (that is, eyes of user 11 Pupil 13) optical component example.

As described above, the Clairvoyant type holographic display device 100 according to embodiment can be worn over wearing for the head of user 10 Equipment is worn, thus, housing 190 there can be the shape of one-eyed glasses (it is the close installation part from the eyes of user 10 to ear) Shape, or can have the shape for being attached to one of the lens of glasses.

For example, housing 190 may include the first housing parts 190A, the bending section 190B and neighbouring eyes 11 of neighbouring ear The second housing parts 190C.First housing parts 190A, bending section 190B and the second housing parts 190C may be integrally formed, But it is not limited to this.First housing parts 190A can have such as light source cell 110, spatial light modulator 120, optical branching device 130th, relay optical system 140 and noise removing filter 150.Second housing parts 190C can have such as object lens 170 and light Road converter 180.Bending section 190B can have the reflecting member 160 that light path is bent according to the shape of housing 190, such as be all-trans Penetrate prism or pure speculum.The focal length of the relay optical system 140 of size or optical system according to housing 190, relay optical Second relay lens 143 or noise removing filter 150 of system 140 may be provided in the second housing parts 190C.Second shell Body portion 190C may include the first window 191 and the second window 192, and the first window is arranged at the position of eyes 11 of user oriented 10, When Clairvoyant type holographic display device 100 is worn on the head of user 10, the second window 192 is arranged on and the counterpart of the first window 191 Singapore.First window and the second window 191 and 192 may include glass or transparent plastic material or can be the second housing parts The open section of 190C.Optical path converter 180 can be set to the second incidence surface 180b near the second window 192.According to upper Layout is stated, exterior light Lo can incide optical path converter 180 via the second window 192, and can be via optical path converter 180 and first Window 191 reaches the eyes 11 of user 10.In other words, user 10 can be via the first window 191, the window 192 of optical path converter 180 and second See outside.According to above-mentioned layout, optical path converter 180 can the eyes 11 of proximal subscribers 10 set.

The layout of object lens 170 is described below.

Fig. 3 is the figure of the example of the layout of object lens 170.For convenience of description, Fig. 3 is shown not by the optical path converter of Fig. 2 The diffraction light of 180 bending of beam separating film 181.Referring to Fig. 3, object lens 170 may be provided at the position of the SLM 172 of imaging or Near the person position.If the light modulation surface of spatial light modulator 120 is arranged on the incidence surface side of the first relay lens 141 The first focal length f1 position at or the position near, because the SLM 172 being imaged is formed in the transmitting of the second relay lens 143 At second focal length f2 of face side or near the position, so object lens 170 may be provided at the emitting surface of the second relay lens 143 At second focal length f2 of side or near the position.

Fig. 4 is the figure of another example of the layout of object lens 170.For convenience of description, Fig. 4 is also illustrated not by the light path of Fig. 2 The diffraction light of the bending of beam separating film 181 of converter 180.Referring to Fig. 4, the SLM 172 that object lens 170 can be set to imaging is placed Between front focus (object focus) Fo and the incidence surface of object lens 170 of object lens 170.

With reference now to Fig. 2, the operation of Clairvoyant type holographic display device 100 is described.Control unit 900 can produce holographic data, And provide holographic data signal to spatial light modulator 120.Holographic data signal can be Computer-generated Hologram (CGH) letter Number, it is calculated to reproducing target hologram in space.Color hologram can be driven to implement by the RGB time-divisions.For example, control Unit processed 900 can one after the other drive the red, green of light source cell 110, blue-light source, and transmission corresponds to red, green and indigo plant The holographic data signal of color hologram, and red, green and blue hologram are one after the other shown, thus can show color hologram Figure.

Spatial light modulator 120 can be according to the holographic data signal provided by control unit 900 in spatial light modulator 120 Surface on form hologram pattern.The principle that spatial light modulator 120 forms hologram pattern can show with such as display panel The principle of image is the same.For example, hologram pattern can be displayed in spatial light modulator 120, as including with the holography to be reproduced Scheme the interference figure of related information.Then, light can be changed into diffraction by the hologram pattern formed from spatial light modulator 120 Light, diffraction light is modulated to have holographic wavefront on the modulation surface of spatial light modulator 120.

The diffraction light produced by spatial light modulator 120 can form the SLM 172 of imaging by relay optical system 140.

Spatial light modulator 120 is it is so structured that the array of multiple pixels, thus, the array of multiple pixels serves as pixel Battle array.Thus, incident light not only can by the hologram pattern that is formed by spatial light modulator 120 and diffraction and interference, but also Can by be configured to the pixel-matrix of the scarlet array of spatial light modulator 120 and diffraction and interference.A part for incident light Not by the hologram pattern diffraction of spatial light modulator 120, but can pass through spatial light modulator 120.As a result, multiple lattice points can It is apparent in pupil plane, hologram is focused to spot in pupil plane, VW is placed in pupil plane.Multiple lattice points can fill Work as picture noise, picture noise deteriorates multiple holograms, and cause to be not easy to appreciate hologram.Noise removing filter 150 At first focal length f1 of the first relay lens 141 that can be placed in relay optical system 140, and can stop except expecting the order of diffraction Light outside light, so as to remove due to the noise that spatial light modulator 120 causes, such as diffraction pattern or multiple diffraction.

The SLM 172 that object lens 170 can be collimated into picture forms VW with the front of pupil 13 in the eyes 11 of user 10.That is, in After optical system 140 formed holographic wavefront (SLM 172 being imaged) can diffraction and interference in VW, thus, object lens 170 So that seeing 3D holograms.

Meanwhile, as described above, the beam separating film 181 of the optical path converter 180 of Fig. 2 can allow the exterior light Lo of Fig. 2 saturating Cross, hologram thus can be not only seen in VW but also the scene outside second window 192 of Fig. 2 is can also be seen that.

As shown in figure 3, being arranged at the position of the SLM 172 of imaging when object lens 170 or when near the position, Yong Hujing The image seen by object lens 170 can be the SLM 172 of imaging.That is, when reproduce hologram when, user 10 can with imaging SLM 172 (VW) in the viewing location of d appreciates hologram.In this respect, can according to imaging SLM 172 size S and The SLM 172 and VW of imaging apart from d come control reproduce hologram VA or visual field (FOV).That is, if the SLM of imaging 172 size S increases, then the VA of FOV can increase, if the size S of the SLM 172 of imaging reduces, the VA of FOV can reduce. The size S of the SLM 172 of imaging can according to the magnifying power of the size of spatial light modulator 120 and relay optical system 140 come It is determined that.Meanwhile, if the SLM's 172 and VW of imaging reduces apart from d, VA or FOV can increase.The SLM 172 and VW of imaging Can be determined according to the F values F/# of object lens 170 apart from d.As described above, object lens 170 and optical path converter 180 be arranged to with The pupil 13 at family 10 is contacted, and thus, the SLM 172 and VW of imaging can reduce apart from d, and correspondingly, VA or FOV can increase.

As shown in figure 4, the SLM 172 of imaging can be placed in front focus (object focus) Fo and object lens 170 of object lens 170 Between incidence surface.Fig. 5 is the figure of the operation of the layout of the object lens 170 for describing Fig. 4.When the SLM 172 of imaging is placed on object lens When between 170 front focus (object focus) Fo and the incidence surface of object lens 170, as shown in figure 5, seen via object lens 170 Image can be the SLM 173 by the setting virtual image of object lens 170.In this respect, erect the SLM's 173 of virtual image Size S ' can meet equation below lens relative to the size S of the SLM 172 of imaging,

[equation 1]

Wherein, negative sign-expression virtual image, a is expressed as the distance between SLM 172 and object lens 170 of picture, and b represents that setting is empty Intend the distance between SLM 173 and object lens 170 of imaging, f3 represents the front focal length of object lens 170.

User 10 can appreciate hologram with the SLM 173 for erectting virtual image in the observation position (VW) of d '. This respect, can be according to the size S ' of the SLM 173 for erectting virtual image and the distance of the SLM 173 and VW that erect virtual image The VA or FOV of the hologram that d ' controls reproduce.If that is, erect virtual image SLM 173 size S ' increase, VA or FOV increases, if the size S ' for erectting the SLM 173 of virtual image reduces, VA or FOV reduces.Erect the SLM of virtual image 173 size S ' can determine according to the position relationship between the SLM 172 of imaging and object lens 170, such as the institute of equation 1 above Show.In more detail, when the front focus Fo of object lens 170 is positioned closer to the SLM 172 of imaging, the SLM of virtual image is erect 173 size S ' is greatly increased, and thus, VA or FOV can be greatly increased.

The immersion holographic display device for implementing hologram by using composite space optical modulator is known as being applied to often The holographic display device of HMD is advised, however, composite space optical modulator can need labyrinth, causes resolution ratio to deteriorate, and work as table Cause 2D deterioration of image quality during up to 2D images.Ultrahigh resolution composite space optical modulator is necessary to minimize high order diffraction Influence, FOV can be limited by the size of composite space optical modulator.Thus, relative to equal resolution, with ultrahigh resolution The composite space optical modulator of pixel can have narrow FOV.

Meanwhile, the Clairvoyant type holographic display device 100 of the present embodiment not only can be according to the size of spatial light modulator 120 And can also be according to the construction of optical system (for example, the F values F/# or object lens of the magnifying power of relay optical system 140, object lens 170 170 position etc.) determine imaging SLM 172 size S or erect virtual image SLM 173 size S ', it is thus, holographic The VA or FOV of figure are not limited by the size of spatial light modulator 120.

Describe in the present embodiment for implementing the example that the RGB time-divisions of color hologram drive, but embodiment is not limited In this.Used as another example, light source cell 110 can illuminate white light, and use the liquid crystal panel including colour filter as spatial light Modulator 120, so as to implement color hologram according to space segmentation.

The situation of the illumination collimation directional light of light source cell 110 is described in the above-described embodiments.However, light source cell 110 Diverging light or converging light can be illuminated.In this case, light source cell 110 may include diverging or converging light lens rather than collimation Lens.According to situation, object lens 170 can be omitted.

Although Clairvoyant type holographic display device 100 is worn on the left eye 11L of user 10 in fig 1 and 2, Clairvoyant type is complete Breath display device 100 can be worn on the right eye 11R of user 10.The Clairvoyant type holographic display device 100 being worn on right eye 11R can With with the symmetrical structure of Clairvoyant type holographic display device 100 being worn on left eye 11L.

Fig. 6 is the schematic diagram of the optical system of the Clairvoyant type holographic display device 200 according to another embodiment.Referring to Fig. 6, The Clairvoyant type holographic display device 200 of the present embodiment with referring to figs. 1 to the basic phase of Clairvoyant type holographic display device 100 described in 5 Together, except Clairvoyant type holographic display device 200 uses transmissive spatial optical modulator 220.Transmissive spatial optical modulator 220 can Including for example being adjusted using the semiconductor light of the optical modulator or based compound semiconductor (such as GaAs) of liquid-crystal apparatus (LCD) Device processed.The light sent from light source cell 110 is via the diffraction of transmissive spatial optical modulator 220 and modulation.Through transmissive spatial The diffraction light of optical modulator 220 can focus on user 10 via relay optical system 140, object lens 170 and optical path converter 180 The front of pupil 13 of eyeball 11, to form VW.

Fig. 7 is the schematic diagram of the optical system of the Clairvoyant type holographic display device 300 according to another embodiment.Referring to Fig. 7, The Clairvoyant type holographic display device 300 of the present embodiment with referring to figs. 1 to the basic phase of Clairvoyant type holographic display device 100 described in 5 Together, except Clairvoyant type holographic display device 300 uses active reflector 380 as optical path converter.Active reflector 380 can be with It is the optical component for adjusting reflection and transmission on one's own initiative under the control of control unit 901.For example, as use liquid crystal (LC) Transmission adjusting apparatus, together with (semi-transparent) speculum, active reflector 380 may include electrochromic device etc..Can increase towards use The reflectance coating or the film with other additional functionalities of the light quantity of the pupil 13 at family 10 can be additionally provided at active reflector On 380 beam separating film.Active reflector 380 can be used as optical path converter, thus, because extremely bright external environment condition without Easily in the case of observation hologram, control unit 901 can adjust from external incident to pupil 13 light quantity.

Fig. 8 is the schematic diagram of the optical system of the Clairvoyant type holographic display device 400 according to another embodiment.Referring to Fig. 8, The Clairvoyant type holographic display device 400 of the present embodiment may include optical path converter 480 (such as referring to figs. 1 to the beam splitting described in 5 Device) and the separation transmission-type adjusting apparatus 485 that are arranged on the second incidence surface 480b of optical path converter 480.Transmission-type is adjusted Engagement positions 485 can be used separately, thus, in the case where observation hologram is difficult because of extremely bright external environment condition, control The adjustable amount from the outside through the exterior light Lo that pupil 13 is incided by the second window 192 of unit processed 902.

Fig. 9 is the schematic diagram of the optical system of the perspective formula holographic display device 500 according to another embodiment.Figure 10 is to retouch State the figure of the operation of the Clairvoyant type holographic display device 500 of Fig. 9.

Referring to Fig. 9, the Clairvoyant type holographic display device 500 of the present embodiment is holographic aobvious with referring to figs. 1 to the Clairvoyant type described in 5 Show that equipment 100 is essentially identical, except Clairvoyant type holographic display device 500 also include can be along optical axis direction 546a mobile relay optics The mobile lens retainer 546 of the second relay lens 543 of system 540.Mobile lens retainer 546 may include that motor (does not show Go out), so that the second relay lens 543 is moved on optical axis direction 546a under the control of control unit 903.As another example, Mobile lens retainer 546 can manually move the second relay lens 543 along optical axis direction 546a.If the second relay lens 543 are moved on optical axis direction 546a, then the size of the SLM 172 of the imaging for being formed by relay optical system 540 can be adjusted, Or the position of the SLM 172 of imaging can move, as shown in Figure 10.

In more detail, formed by spatial light modulator 120 via the first relay lens 541 of relay optical system 540 Diffraction light can dissipate after focusing at the focal position of emission surface side of the first relay lens 541.With referring to figs. 1 to Clairvoyant type holographic display device 100 described in 5 is similar to, if the second relay lens 543 is located at the incidence of the second relay lens 543 The focal position identical place of the emission surface side of the focal position of face side and the first relay lens 541 is (hereinafter referred to Home position), then the size of the SLM 172 being imaged can be S1.If however, the second relay lens 543 exists from home position Mobile closer to the first relay lens 541 on direction 547, then the size of the SLM 172 being imaged can be contracted to S2.As a result, User can be seen that the SLM 172 of the imaging of small size (S2), and thus, VA or FOV can reduce.If on the contrary, the second relaying Lens 543 are moved up from home position in the side away from the first relay lens 541, because the size of the SLM 172 being imaged is big In S1, so user can be seen that the SLM 172 of large-sized imaging, thus, VA or FOV can increase.As described above, the present embodiment Clairvoyant type holographic display device 500 FOV can be adjusted by the lens position of mobile relay optical system 540, with reference to Fig. 3 institutes State.

If as described above, the second relay lens 543 is moved on optical axis direction 546a, due to the SLM's 172 that is imaged Position also may move, as described with respect to figure 4, so the position of the SLM 172 of imaging can be in the front focus Fo and object lens of object lens 170 Adjusted between 170 incidence surface, thus, the size (S ' of equation 1) for erectting the SLM 172 of virtual image can be adjusted, So as to adjust FOV.

Meanwhile, if FOV increases, because the per inch pixel (PPI) of hologram reduces, so picture quality can deteriorate, If FOV reduces, because the PPI of hologram increases, so picture quality is improved.

Figure 11 is the schematic diagram of the optical system of the Clairvoyant type holographic display device 600 according to another embodiment.Referring to figure 11, the Clairvoyant type holographic display device 600 of the present embodiment is basic with referring to figs. 1 to the Clairvoyant type holographic display device 100 described in 5 It is identical, except Clairvoyant type holographic display device 600 using field speculum 670 rather than referring to figs. 1 to the object lens 170 described in 5.Light Road converter 680 can be beam splitter.The beam separating film 681 of optical path converter 680 can be set to incide and be transmitted through The diffraction light of the first incidence surface 680a and incide and be transmitted through the exterior light Lo of the second incidence surface 680b can court Transmitted to emitting surface 680c, the light for inciding and being transmitted through the 3rd surface 680d can reflect towards emitting surface 680c, such as Shown in Figure 11.In this respect, the 3rd surface 680d can be relative with the first incidence surface 680a.Field speculum 670 can be set to 3rd surface 680d of neighbouring optical path converter 680.

According to above-mentioned layout, can incide optical path converter 680 via the diffraction light of relay optical system 140 first enters Reflective surface 680a, and the 3rd surface 680d can be transmitted into via beam separating film 681.From the diffraction light of the 3rd surface 680d transmittings Can be reflected from field speculum 670, the 3rd surface 680d of optical path converter 680 can be again incident on, can be from beam separating film 681 reflections, then can be emitted through emitting surface 680c, and thus, diffraction light can reach the pupil 13 of the eyes 11 of user 10. This respect, diffraction light can collimate directional light incidence and show up speculum 670, and can be focused on in pupil by field speculum 670 VW is formed at 13.Meanwhile, exterior light Lo can incide the second incidence surface 680d of optical path converter 680, then can be via beam Separating film 681 is transmitted into emitting surface 680c, and thus exterior light Lo can reach the pupil 13 of user 10.

Figure 12 is the schematic diagram of the optical system of the Clairvoyant type holographic display device 700 according to another embodiment.Referring to figure 12, the Clairvoyant type holographic display device 700 of the present embodiment is basic with referring to figs. 1 to the Clairvoyant type holographic display device 100 described in 5 It is identical, except Clairvoyant type holographic display device 700 is using the optical path converter 780 with curved surface beam separating film 781 It is not the object lens 170 and optical path converter 180 described in Fig. 1 to 5.

Optical path converter 780 can be beam splitter, and it is included relative to the first incidence surface 780a with recessed curved surface shape Into beam separating film 781.Optical path converter 780 can have such shape, wherein, two for by beam separating film 781 separate Part is combined relative to beam separating film 781 by a border.In this respect, two parts of optical path converter 781 have Roughly the same refractive index.

The beam separating film 781 of optical path converter 780 can be partial mirror.In this case, by light source cell 110 The light of illumination need not be confined to polarised light.

Used as another example, when the light illuminated by light source cell 110 can be polarized, the beam separation of optical path converter 780 is thin Film 781 can be polarization-selective thin film.For example, beam separating film 781 there can be polarization selectivity, the first polarimeter is incided Light (i.e. from the polarised light of the transmitting of light source 110) reflection of face 780a, the light transmission of the second polarization.Because exterior light Lo has first Polarized component and both second polarized components of the first polarization direction are orthogonal to, if so beam separating film 781 has polarization Selectivity, then be only contained in and can pass through beam separation from the second polarized component in the incident exterior light Lo of the second incidence surface 780b Film 781, and reach the pupil 13 of eyes of user 11.

The curved surface of beam separating film 781 can be designed so that the light beam for inciding the first polarization surface 780a is anti- Penetrate, and be gathered in beam separating film 781 with the front of the pupil 13 formation VW of eyes of user 11.By beam separating film 781 The function or field speculum 670 described in reference diagram 11 that can replace referring to figs. 1 to the object lens 170 described in 10 are focused on to light beam Function.Thus, optical path converter 780 may be provided at the position corresponding to the position of above-mentioned object lens 170.For example, light path converting Device 780 can set bunchy separating film 781 and be placed near image plane (the 172 of Fig. 3), be transmitted from relay optical system 140 Hologram be imaged in image plane.

Simultaneously as two parts combined by a border relative to beam separating film 781 of optical path converter 780 With roughly the same refractive index, so when exterior light Lo passes through beam separating film 781, will not reflect.In other words, outward Portion light Lo passes through beam separating film 781 without refraction, and user can be seen that the outer scene not distorted.

Figure 13 is the schematic diagram of the optical system of the Clairvoyant type holographic display device 800 according to another embodiment.

Referring to Figure 13, the optical system of the Clairvoyant type holographic display device 800 of the present embodiment substantially with it is described in reference diagram 7 Clairvoyant type holographic display device 700 optical system it is identical, except the optical system of Clairvoyant type holographic display device 800 is also wrapped Include light beam selectivity optical element 890, thus, below main description difference.

Light source cell 110 can polarization of illumination light.As described with reference to Figure 2, when 110 polarization of illumination light of light source cell, light point Prop 130 can be polarization beam apparatus, and the polarization conversion member of such as 1/4 polarization plates (not shown) can also be provided at optical branching device Between 130 and spatial light modulator 120.Optical path converter 880 can have polarization selectivity, and including with predefined curved surface shape Into beam separating film 881.As described with reference to Figure 12, beam separating film 881 can have polarization selectivity, incide the first polarization The first polarised light (i.e. from the polarised light of the transmitting of light source 110) reflection, the second polarized light transmission of surface 880a.Due to exterior light Lo With the first polarized component and being orthogonal to the second polarized component of the first polarization direction, so in being only contained in exterior light Lo the Two polarized components can pass through beam separating film 881, and reach the pupil 13 of eyes of user 11.It is as described below, light beam selective light Learn element 890 has just (+) refractive index only with respect to the first polarised light, does not have refractive index relative to the second polarised light.Thus, The curved surface of beam separating film 881 is contemplated that the refractive index of light beam selectivity optical element 890 is designed.

Figure 14 is used in the example of the light beam selectivity optical element 890 in the Clairvoyant type holographic display device 800 of Figure 13 Figure.The light beam selectivity optical element 890 of Figure 14 is that have different refractivity relative to the first polarised light and the second polarised light Polarization dependence lens.Referring to Figure 14, light beam selectivity optical element 890 can be cemented lens, the first lens 891 and the Two lens 892 are glued together.First lens 891 can be isotropic lens, including such as glass or isotropism polymerization material Material.Second lens 892 can be anisotropy lens, including be polymerized according to the anisotropy that polarization direction has different refractivity Material.The second lens 892 including anisotropy polymeric material can have different from the first lens 891 relative to the first polarised light Refractive index, and can relative to the second polarised light have and the identical refractive index of the first lens 891.Light beam selectivity optical element The emitting surface of 890 incidence surface 890a (i.e. the incidence surfaces of the first lens 891) and light beam selectivity optical element 890 890c (i.e. the emitting surfaces of the second lens 892) can be flat surfaces.Side between first lens 891 and the second lens 892 Boundary surface 890b can be the curved surface with predetermined curvature.The curved surface of border surface 890b can be designed to incide The light beam of first polarization of the incidence surface 890a of light beam selectivity optical element 890 is focused on in the pupil 13 of eyes of user 11 Front forms VW.

Now briefly describe the operation of the Clairvoyant type holographic display device 800 of the present embodiment.

Light with the polarization illuminated by light source cell 110 can have predetermined hologram information, and can be adjusted via spatial light The diffraction of device processed 120, and it is incident via relay optical system 140 and noise removing filter 150 as the diffraction light of the first polarization To optical path converter 880 first polarizes surface 880a.Optical path converter 880 may be configured to the first polarised light can be thin in beam separation Reflected in film 881, focused on by the curvature of beam separating film 881, and be emitted through emitting surface 880c.From optical path converter 880 First polarised light of transmitting can be focused in light beam selectivity optical element 890, with the front shape of pupil 13 of eyes of user 11 Into VW, thus user can be seen that hologram.

Exterior light Lo can incide the second polarization surface 880b of optical path converter 880.It is only contained in exterior light Lo The second polarised light perpendicular to the first polarization may pass through the beam separating film 881 of optical path converter 880, and be emitted through transmitting table Face 880c.Light beam selectivity optics unit can be passed through without refraction from the exterior light Lo of the second polarization of the transmitting of optical path converter 880 Part 890, thus user can be seen that distortionless outer scene.

In the present embodiment, optical path converter 880 can be relative by distributing refractive index with light beam selectivity optical element 890 In the design of the first polarised light, thus optical design is further free in terms of the free degree, and VA can fully increase.According to circumstances, When light beam selectivity optical element 890 fully controls refractive index, the beam separating film 881 of optical path converter 880 can be formed It is flat surfaces.

Figure 15 A to 15C be used in the Clairvoyant type holographic display device 800 of Figure 13 light beam selectivity optical element 990, The figure of example 990 ' and 990 ".

Referring to Figure 15 A, light beam selectivity optical element 990 may include the first and second transparent base layers relative to each other 991 and 992 and the liquid crystal layer 994 that is placed between the first and second transparent base layers 991 and 992.First and second transparent bases At least one surface between bottom 991 and 992 apparent surface can be formed such that light beam selectivity optics unit with curved surface Part 990 can have predetermined refraction according to the orientation of liquid crystal layer 994.First and second electrodes 996 and 997 can be separately positioned on In first and second transparent base layers 991 and 992.Power supply 998 can be to the first and second electrodes 996 and 997 applied voltages.Liquid crystal The liquid crystal of layer 994 can be alignd by institute's applied voltage.Reference number 995 represents the barrier of sealing fluid crystal layer 994.Liquid crystal layer 994 refractive index and polarization characteristic can change according to the alignment of liquid crystal, thus, the light beam selectivity optics unit of the present embodiment Part 990 can be active lenses.As an example, when not to 994 applied voltage of liquid crystal layer, the first polarised light or the second polarised light Liquid crystal layer 994 can be actually transmitted through, thus, user can be seen that both hologram and outer scene.Applied when to liquid crystal layer 994 During making alive, only the first polarised light can be focused on after liquid crystal layer 994 is transmitted through, and thus, user only sees hologram.As Another example, in the case of to the applied voltage of liquid crystal layer 994 and only the second polarized light transmission by liquid crystal layer 994, when not right During 994 applied voltage of liquid crystal layer, both the first polarised light and the second polarised light can actually be transmitted through liquid crystal layer 994, thus User can be seen that both hologram and outer scene, and when to 994 applied voltage of liquid crystal layer, only the second polarised light can be logical in transmission Focusing after liquid crystal layer 994 is crossed, thus, user only sees outer scene.

Although the inner surface (surface i.e. where second electrode 997) of the second lens substrate layer 992 is formed as in Figure 15 A Curved surface, but the first transparent base layer 991 can be formed as curved surface.First and second electrodes 996 and 997 are in figure 15A is separately positioned on the apparent surface of the first and second transparent base layers 991 and 992, but disclosure not limited to this.

Figure 15 B show the modified example of the light beam selectivity optical element 990 of Figure 15 A.Referring to Figure 15 B, light beam selective light Learn that element 990 ' may include the first and second transparent base layers 991 ' and 992 ' relative to each other and to be placed in first and second saturating Liquid crystal layer 994 ' between bright basalis 991 ' and 992 '.First and second electrodes 996 ' and 997 ' can be separately positioned on the first He In second transparent base layer 991 ' and 992 '.Power supply 998 ' can be to the applied voltage of the first and second electrode 996 ' and 997 '.Liquid crystal The liquid crystal of layer 994 ' can be alignd by institute's applied voltage.The polarization characteristic of liquid crystal layer 994 ' can change according to the applying of voltage Become.Liquid crystal layer 994 ' can be sealed by barrier 995 '.

At least one of first and second transparent base layers 991 ' and 992 ' can be cemented lens.As an example, such as Shown in Figure 15 B, the second transparent base layer 992 ' can be by first lens jacket 992a ' and second of the bonding with different refractivity Lens jacket 992b ' is formed.In this respect, the second transparent base layer 992 ' is overall has writing board shape.First lens jacket 992a ' And the second adhesive surface between lens jacket 992b ' can be convexly formed relative to incidence surface so that the second transparent substrates Layer 992 ' can have just (+) refractive index.The shape of adhesive surface can be according to the first transmission layer 992a ' and the second lens jacket The refraction index changing of 992b '.It is similar with the light beam selectivity optical element 890 above with reference to described in Figure 14, the first lens jacket 992a ' may include isotropic material, and the second lens jacket 992b ' may include anisotropic material so that the second transparent base layer 992 ' can have different refractive indexes relative to the first polarised light (i.e. diffraction light) and the second polarised light (i.e. exterior light).

The light beam selectivity optical element 990 ' of the present embodiment and the light beam selectivity optical element with reference to described in Figure 15 A 990 difference is that the control refractive index of the second transparent base layer 992 ', light beam selectivity optical element 990 ' is only selected partially Shake.

Figure 15 C show the modified example of the light beam selectivity optical element 990 of Figure 15 A.Referring to Figure 15 C, light beam selective light Learn element 990 " may include the first and second transparent base layers 991 relative to each other " and 992 " and to be placed in first and second saturating Liquid crystal layer 994 between bright basalis 991 " and 992 " ".First and second electrodes 996 " and 997 " can be separately positioned on the first He In second transparent base layer 991 " and 992 ".Second electrode 997 " may be provided at the second transparent base layer 992 " whole surface On, and first electrode 996 " may be provided at the first transparent base layer 991 " and a part on (for example, as shown in figure 15 c first The circumference of transparent base layer 991 " or both sides).Power supply 998 " can be to the first and second electrodes 996 " and 997 " applied voltage.Liquid crystal The liquid crystal of layer 994 " can be alignd by institute's applied voltage.Liquid crystal layer 994 " can be by barrier 995 " sealing.

Due to first electrode 996 " position and second electrode 997 " position it is different, so being applied to liquid crystal layer 994 " Electric field can be heterogeneous.For example, work as first electrode 996 " be arranged on the first transparent base layer 991 " and circumference or both sides on When, first electrode 996 " the electric field of edge side can have fringing field shape.Thus, if first electrode 996 " shape and apply The voltage for being added to it is rightly selected, then liquid crystal layer 994 " can be by being applied to liquid crystal layer 994 " inhomogeneous field have just (+) refractive index.That is, not to liquid crystal layer 994 " applied voltage when, the first polarised light or the second polarised light can actually transmit logical Cross liquid crystal layer 994 ", thus, user can be seen that hologram and outer scene.When to liquid crystal layer applied voltage, the only first polarization Light is being transmitted through liquid crystal layer 994 " after focus on, thus, user only sees hologram.

Figure 16 is (the Clairvoyant type holography of head mounted display (HMD) equipment 700 being had on by user according to another embodiment Display device) schematic plan view.Figure 17 is the schematic diagram of the optical system of the HMD device 700 of Figure 10.

Referring to Figure 16, the HMD device of the present embodiment can be equipment (the such as glasses or eye protection for being worn over the head of user 10 Mirror) or be attached on glasses or goggles.

HMD device 1000 may include left-eye perspective type display device 1001, right-eye perspective type display device 1002 and connect Connect the framework 803 of left-eye perspective type display device 1001 and right-eye perspective type display device 1002.Left-eye perspective type display device 1001 and right-eye perspective type display device 1002 may each be referring to figs. 1 to the Clairvoyant type holographic display device 100 described in 15 to One of 600.When HMD device 1000 is worn on the head of user 10, the optical path converter of left-eye perspective type display device 1001 1081 can be set with the left eye 11L of proximal subscribers 10, and the optical path converter 1082 of right-eye perspective type display device 1002 can be with neighbour The right eye 11R of nearly user 10 is set.Left-eye perspective type display device 1001 and right-eye perspective type display device 1002 can show respectively Show left eye hologram and right eye hologram.Because left-eye perspective type display device 1001 and right-eye perspective type display device 1002 are Clairvoyant type display device, the HMD device 1000 of the present embodiment can be the Clairvoyant type for seeing right and left eyes hologram and outer scene Display device.

The control list of the optical system of control left-eye perspective type display device 1001 and right-eye perspective type display device 1002 Unit 1004 may be provided at the inside of the housing of one of left-eye perspective type display device 1001 and right-eye perspective type display device 1002 Or it is outside.

The position of the pupil of different user can be slightly different.Thus, it is desirable to adjust by left-eye perspective type display device 1001 With right-eye perspective type display device 1002 each formed peep hole VW position composed component so that pupils of the VW in user Place.In this respect, framework 1003 can move left-eye perspective type display device 1001 and right-eye perspective type on left and right directions 1004 At least one of display device 1002, shows and sets so that left-eye perspective type display device 1001 and right-eye perspective type is reduced or increased Space between standby 1002, so that fixed left-eye perspective type display device 1001 and right-eye perspective type display device 1002.It is this The fixing equipment of framework 1003 can be used well known method.The HMD device 1000 of the present embodiment separably includes left-eye perspective The optical system of type display device 1001 and the optical system of right-eye perspective type display device 1002, so as to be easily adjusted left eye The distance between Clairvoyant type display device 1001 and right-eye perspective type display device 1002.

Clairvoyant type holographic display device according to embodiment can simultaneously see hologram and outside.

The size of the adjustable visual field of Clairvoyant type holographic display device according to embodiment.

Clairvoyant type holographic display device according to embodiment can be applied to personal Clairvoyant type display head mounted display.

Clairvoyant type holographic display device according to embodiment can implement optical system, and the optical system will via Modulation and Amplitude Modulation Hologram is implemented into head mounted display.

When binocular head mounted display is applied to according to the Clairvoyant type holographic display device of embodiment, due to left optical system System and right optical system are kept completely separate, so one or two of left optical system and right optical system are according to user (observer) Left pupil and the distance between right pupil it is mobile, so as to adjust the distance between left pupil and right pupil.

For the ease of understanding Clairvoyant type holographic display device, each embodiment is described in the drawings and shown.However, should manage Solution, embodiment described herein only with descriptive consideration should be not used in restricted.Feature or aspect in each embodiment Description is typically considered as other similar characteristics or aspect to can be used in other embodiments.

Although one or more embodiments have been described with reference to the drawings, it will be appreciated that those skilled in the art that not In the case of departing from by spirit and scope claimed below, various changes can be carried out to form and details.

Claims

1. a kind of Clairvoyant type holographic display device, including：

Light source, there is provided light；

Spatial light modulator, makes optical diffraction, and reproduce hologram；

Relay optical system, zooms in or out and transmits the hologram produced by spatial light modulator；

Noise removing filter, noise is removed from the diffraction light of the hologram transmitted via relay optical system；And

Optical path converter, changes from the path of diffraction light and the path of exterior light of the hologram of relay optical system transmission At least one, and by diffraction light and outside optical transport to same area.

2. Clairvoyant type holographic display device as claimed in claim 1, also including collimater, will provide light conversion and be defined by light source Direct light.

3. Clairvoyant type holographic display device as claimed in claim 1, wherein, the spatial light modulator includes amplitude spatial light Modulator, phase spatial light modulator or composite space optical modulator.

4. Clairvoyant type holographic display device as claimed in claim 1, wherein, the relay optical system includes the first optics unit Part and the second optical element, the hologram modulated by spatial light modulator incide the first optical element, the second optical element tool There is the second focus of the incidence surface side of the first near focal point of emission surface side in the first optical element.

5. Clairvoyant type holographic display device as claimed in claim 4, wherein, first optical element has the first focal length, Second optical element has second focal length different from the first focal length.

6. Clairvoyant type holographic display device as claimed in claim 4, wherein, the noise removing filter is arranged on the first light Learn the first near focal point of the emission surface side of element.

7. Clairvoyant type holographic display device as claimed in claim 1, wherein, the noise removing filter includes pin hole.

8. Clairvoyant type holographic display device as claimed in claim 1, also including field optics element, it is focused on from relay optical system The hologram of system transmission.

9. Clairvoyant type holographic display device as claimed in claim 8, wherein, it is attached that the field optics element is arranged on image plane Closely, the hologram from relay optical system transmission is imaged in image plane.

10. Clairvoyant type holographic display device as claimed in claim 8, wherein, the field optics element is arranged to the picture and puts down Face is arranged between the focal position of the incidence surface side of field optics element and the incidence surface of field optics element, from relay optical The hologram of system transfers is imaged in image plane.

11. Clairvoyant type holographic display devices as claimed in claim 10, wherein, the field optics element arranges imaging plane weight It is new to be imaged as erectting the virtual image, from the image plane of the hologram imaging of relay optical system transmission.

12. Clairvoyant type holographic display devices as claimed in claim 8, wherein, the field optics element is adjacent to optical path converter Set.

13. Clairvoyant type holographic display devices as claimed in claim 8, wherein, by changing relay optical system and field optics The distance between element come adjust from relay optical system transmission hologram size.

14. Clairvoyant type holographic display devices as claimed in claim 8,

Wherein, the optical path converter includes beam splitter, and it includes first surface, second surface, the 3rd surface and is arranged on interior The beam separating film in portion, first surface is incided from the diffraction light of the hologram of relay optical system transmission, and incidence of external light is arrived Second surface, the 3rd surface is relative with second surface, the diffraction of the hologram that the reflection of beam separating film is transmitted via first surface At least a portion of light is transmitted to the 3rd table at least a portion for the exterior light transmitted via second surface to the 3rd surface Face, and

Wherein, the field optics element includes the object lens that the first surface of neighbouring optical path converter is set.

15. Clairvoyant type holographic display devices as claimed in claim 8,

Wherein, the optical path converter include beam splitter, it include first surface, second surface, the 3rd surface, the 4th surface and The beam separating film of inside is arranged on, first surface is incided from the diffraction light of the hologram of relay optical system transmission, it is outside Light incides second surface, and the 3rd surface is relative with second surface, and the 4th surface is relative with first surface, the reflection of beam separating film At least a portion of the diffraction light of the hologram transmitted via first surface is saturating via the 4th surface to the 4th surface, then secondary reflection At least a portion of the diffraction light of the hologram penetrated makes at least the one of the exterior light transmitted via second surface to the 3rd surface Fractional transmission to the 3rd surface, also,

Wherein, the field optics element includes the recessed speculum that the 4th surface of neighbouring optical path converter is set.

16. Clairvoyant type holographic display devices as claimed in claim 8, wherein, the optical path converter includes partial mirror, The field optics element is located between relay optical system and optical path converter, and neighbouring optical path converter.

17. Clairvoyant type holographic display devices as claimed in claim 1,

Wherein, the optical path converter may include beam splitter, and it includes first surface, second surface, the 3rd surface and is arranged on Internal beam separating film, first surface, incidence of external light are incided from the diffraction light of the hologram of relay optical system transmission To second surface, the 3rd surface is relative with second surface, and the reflection of beam separating film is spread out via the hologram of first surface transmission At least a portion of light is penetrated to the 3rd surface, and at least a portion for the exterior light transmitted via second surface is transmitted through the 3rd Surface, also,

Wherein, beam separating film has recessed curved surface shape relative to first surface, to reflect and focus on from relay optical system Unite transmission hologram to the 3rd surface.

18. Clairvoyant type holographic display devices as claimed in claim 17, wherein, the optical path converter arrangement bunchy separates thin Film is arranged near image plane, is imaged in image plane from the hologram of relay optical system transmission.

19. Clairvoyant type holographic display devices as claimed in claim 17, wherein, the beam separating film is anti-polarization selectivity Penetrate film.

20. Clairvoyant type holographic display devices as claimed in claim 17, also including light beam selectivity optical element, its focusing is spread out Light is penetrated, and passes through outer light transmissive.

21. Clairvoyant type holographic display devices as claimed in claim 20, wherein, the light beam selectivity optical element is that have The cemented lens of isotropic lens and anisotropy lens, and

Wherein, the cemented lens has just (+) value relative to the refractive index of diffraction light, and the cemented lens is relative to exterior light Refractive index be zero.

22. Clairvoyant type holographic display devices as claimed in claim 20, wherein, the light beam selectivity optical element includes that This relative first and and the second transparent base layer and the liquid crystal layer that is placed between the first and second transparent base layers, and pass through Optionally have inclined with the liquid crystal control electrode layer being arranged at least one surface of the first and second transparent base layers Shake characteristic.

23. Clairvoyant type holographic display devices as claimed in claim 20, wherein, the light beam selectivity optical element includes that This first and second relative transparent base layer and the liquid crystal layer being placed between the first and second transparent base layers, and be logical Cross optionally has with the liquid crystal control electrode layer being arranged at least one surface of the first and second transparent base layers The active liquid crystal lens of refractive index.

24. Clairvoyant type holographic display devices as claimed in claim 1, wherein, the optical path converter includes adjustment exterior light Transmission amount active reflector.

25. Clairvoyant type holographic display devices as claimed in claim 24, wherein, the active reflector includes liquid crystal filter One of with electrochromic device.

26. Clairvoyant type holographic display devices as claimed in claim 1, wherein, the optical path converter is arranged on user's pupil Near.

27. Clairvoyant type holographic display devices as claimed in claim 1, wherein, the Clairvoyant type holographic display device is assemblied in It is worn in the head installation housing on observer's head, at least one of left eye and right eye.

A kind of 28. wear-types for showing hologram show (HMD) equipment, and the HMD device includes：

Left-eye perspective type holographic display device；

Right-eye perspective type holographic display device；And

The framework of connection left-eye perspective type holographic display device and right-eye perspective type holographic display device,

Wherein, left-eye perspective type holographic display device and right-eye perspective type holographic display device include：

Light source, there is provided light；

Spatial light modulator, makes optical diffraction, and reproduce hologram；

29. HMD devices as claimed in claim 28, wherein, when HMD device is worn in user's head, left-eye perspective type is complete The optical path converter proximal subscribers left eye for ceasing display device is set, and the optical path converter of right-eye perspective type holographic display device is neighbouring User's right eye is set.

30. HMD devices as claimed in claim 28, wherein, the optical path converter of left-eye perspective type holographic display device and the right side The distance between optical path converter of eye Clairvoyant type holographic display device can be adjusted.