Abstract: A beam expander including a partial reflector, a reflective polarizer curved about two orthogonal axes and a quarter wave retarder disposed between the reflective polarizer and the partial reflector is described. The beam expander is adapted to receive an input light beam incident on the partial reflector and transmit an expanded output light beam. Illuminators and projection systems including the beam expander are described.

Abstract: It is an object of the present invention to provide a projection optical system having a minimal optical configuration while ensuring necessary capabilities and a head-up display device having a tilted virtual image plane. The head-up display device according to the present invention includes an image forming unit to emit image light containing image information and an eyepiece optical system to display a virtual image by reflecting the image light. While a virtual image plane is tilted to display a virtual image in a range from a far distance to a near distance, a point on the image forming unit conjugating to a far point on the virtual image plane is optically farther from a light flux entering the image forming unit than a point on the image forming unit conjugating to a near point on the virtual image plane.

Abstract: A display device has a display portion and a polarizing plate, the polarizing plate being provided on a viewing side of the display portion and having a transmission axis in a vertical direction with respect to the display portion, wherein at least one tilt orientation phase difference film is provided on a viewing side of the polarizing plate, and the tilt orientation phase difference film has such an arrangement structure that does not cause a phase difference for light emitted upward in the vertical direction, and causes a phase difference for light emitted in a lateral direction perpendicular to the vertical direction.

Abstract: A near-eye display system includes an optical system facing a display panel. The optical system includes an input filter, and output filter, and a variable-power catadioptric lens assembly disposed between the input and output filters. The input and output filters are configured, along with the catadioptric lens assembly to fold a path of display light from the display panel to a user's eye. The catadioptric lens assembly includes two or more lens elements disposed along an optical axis, each lens element having at least one surface with a freeform curvature. One of the lens elements is configured to be laterally translated relative to the other lens elements so as to change an optical power of the catadioptric lens assembly.

Abstract: An image display device includes: a light source emitting laser light; a screen on which an image is drawn by being two-dimensionally scanned by the laser light; a scanner causing the laser light to scan the screen; a light detector detecting a light amount of the laser light emitted from the light source; and a controller controlling the light source by changing a current value to drive the light source in response to a target light amount. The controller obtains a detection signal when driving the light source at a plurality of current setting values from the light detector, and corrects the current value with respect to the target light amount according to an arithmetic operation configured to suppress a difference between an output characteristic of the light source guessed by the obtained detection signal and a reference output characteristic.

Abstract: An illumination apparatus using a coherent light source, including a light beam scanning device that irradiates a light beam onto a hologram recording medium, and scans the light beam so that an irradiation position of the light beam on the hologram recording medium changes with time. The light beam scanning device scans the light beam so that an irradiation direction of the light beam with respect to the hologram recording medium is along the particular optical path, the light beam scanning device having a function of bending the light beam at a fixed scanning origin so that the light beam swings around the fixed scanning origin on a plane including the fixed scanning origin, and scans the light beam in a one-dimensional direction on the hologram recording medium. Illumination light obtained from the hologram recording medium is irradiated onto a light receiving surface.

Abstract: A miniature wide-angle imaging lens has a miniaturization ratio, of a total track length from the center of a first surface to a focal plane by an image circle diameter, with a value less than 3.0. The imaging lens includes, starting from an object side of the lens, a first group of at least three optical elements, a second group including an aperture stop and an optical element immediately in front of or behind the aperture stop, and a third group of at least two optical elements.

Abstract: Provided is a head-up display device which has a virtual image plane shape becoming a part of a concave shape as viewed from the driver side. This head-up display device (30) includes: an image forming unit (10) that displays image information; and a projection optical system including an ocular optical system (5) that displays a virtual image by reflecting light emitted from the image forming unit (10). The ocular optical system (5) includes spherical lenses (51), (52), (53), and a free-form curved surface mirror (56), and is configured by arranging the spherical lenses (51), (52), (53) and the free-form curved surface mirror (56) in this order along the light emission direction.

Abstract: A head-mounted device (HMD) comprises a display element, a Fresnel assembly, an illumination source, and a camera assembly. The display element outputs image light in a first band of light through a display surface. The optics block directs light from the display element to a target region (e.g., includes a portion of a user's face, eyes, etc.). The Fresnel assembly transmits light in the first band and directs light in a second band different than the first band to a first position. The source illuminates the target area with light in the second band. The camera is located in the first position and captures light in the second band corresponding to light reflected from the target area that is then reflected by the Fresnel assembly toward the camera. A controller may use the captured light to determine tracking information for areas of a user's face (e.g., eyes).

Abstract: There is provided an optical system, including a light-transmitting substrate having at least two parallel major surfaces, edges and an output aperture, an optical element for coupling light waves into the substrate to effect total internal reflection, at least one reflecting element positioned outside of the substrate, at least one reflecting surface having at least one active side located between the two major surfaces of the light-transmitting substrate for coupling light waves out of the substrate, wherein light waves trapped inside the substrate are coupled out from the substrate through the output aperture substantially inclined in relation to the normal to the substrate major surfaces and are reflected from the reflecting element into a viewer's eye. An optical device for directing an image into a viewer's eye. An optical device for directing an image onto a viewer's eye is also provided.

Abstract: A near-eye display system includes display panel to display a near-eye lightfield frame comprising an array of elemental images and a lenslet array to present the integral lightfield frame to a user's eye. The system further includes a rendering component to generate an array of elemental images based at least in part on a sparse sampling of a source image to decrease an overlap of image data contained within each individual elemental of the array of elemental images. A method of operation of the near-eye display system includes generating an array of elemental images forming the integral lightfield frame based on a sparse sampling of the current viewpoint of the subject object to decrease an overlap of image data contained within each individual elemental image of the array.

Abstract: A head-mounted device (HMD) comprises a display element, a Fresnel assembly, an illumination source, and a camera assembly. The display element outputs image light in a first band of light through a display surface. The optics block directs light from the display element to a target region (e.g., includes a portion of a user's face, eyes, etc.). The Fresnel assembly transmits light in the first band and directs light in a second band different than the first band to a first position. The source illuminates the target area with light in the second band. The camera is located in the first position and captures light in the second band corresponding to light reflected from the target area that is then reflected by the Fresnel assembly toward the camera. A controller may use the captured light to determine tracking information for areas of a user's face (e.g., eyes).

Abstract: An optical device includes a waveguide including an in-coupling optical element configured to in-couple light into the waveguide, a light distributing element configured to receive light from the in-coupling optical element and distribute light at a selected wavelength, and an out-coupling optical element configured to receive light from the light distributing element and out-couple light out of the waveguide. The out-coupling optical element includes a first region configured to out-couple light at a first depth plane based on a lens function of the first region and a second region configured to out-couple light at a second depth plane based on a different lens function of the second region.

Abstract: According to an aspect, a display device includes: a first polarization member configured to absorb light linearly polarized in a second polarization direction orthogonal to a first polarization direction; an optical sheet configured to reflect light linearly polarized in the second polarization direction and transmit light linearly polarized in the first polarization direction; a front panel disposed between the first polarization member and the optical sheet and capable of changing a polarization direction of incident light into another polarization direction in accordance with a voltage applied to the front panel; and a display panel overlapping with the front panel with a second polarization member interposed therebetween, the second polarization member configured to transmit light linearly polarized in the second polarization direction to the optical sheet.

Abstract: An electronic apparatus and a method of outputting content of the electronic apparatus outputs a synchronized content to a display apparatus and a projection-type display apparatus and a method of outputting a content of the electronic apparatus. The electronic apparatus includes an input/output unit connected with a display apparatus and a projection-type display apparatus, and a control unit configured to control the input/output unit, wherein the control unit outputs a synchronized content to the display apparatus and the projection-type display apparatus through the input/output unit.

Abstract: A display device has a display, operable to generate a real image, and an optical system, comprising one or more lenslets, arranged to generate a virtual sub-image from a partial real image on the display, by each lenslet projecting light from the display to an eye position. The sub-images combine to form a virtual image viewable from the eye position. At least one lenslet is symmetric with respect to a plane, and the display surface is cylindrical with its axis perpendicular to that plane.

Abstract: Light emitting systems and optical systems including a light emitting system and a lens system are described. The light emitting system includes a pixelated light source having a plurality of discrete spaced apart pixels, and includes a plurality of light redirecting elements, each light redirecting element corresponding to a different pixel in the plurality of pixels. The light redirecting elements may be adapted to alter one or both of a central ray direction and a divergence angle of light received from the corresponding pixel. A lens system disposed to receive light from the light emitting system may include a reflective polarizer and a partial reflector.

Abstract: A method for displaying a near-eye light field display (NELD) image is disclosed. The method comprises determining a pre-filtered image to be displayed, wherein the pre-filtered image corresponds to a target image. It further comprises displaying the pre-filtered image on a display. Subsequently, it comprises producing a near-eye light field after the pre-filtered image travels through a microlens array adjacent to the display, wherein the near-eye light field is operable to simulate a light field corresponding to the target image. Finally, it comprises altering the near-eye light field using at least one converging lens, wherein the altering allows a user to focus on the target image at an increased depth of field at an increased distance from an eye of the user and wherein the altering increases spatial resolution of said target image.

Abstract: A display mirror assembly for a vehicle may comprise a display module comprising a display element; a partially reflective, partially transmissive element disposed generally parallel to the display element; optical bonding adhesive having a refractive index disposed between the display element and the partially reflective, partially transmissive element; and a plurality of refracting beads having a refractive index and incorporated in or on the optical bonding adhesive; wherein the display is optically bonded to the partially reflective, partially transmissive element with the optical bonding adhesive.

Abstract: A head-up display device projects a virtual image. The head-up display device includes a display, a first optical member, a second optical member, and an adjuster. The display outputs light that becomes a display image corresponding to the virtual image. The first optical member reflects the light incident from the display. The second optical member reflects or transmits the light reflected by the first optical member such that the virtual image is projected. The adjuster moves the first optical member to adjust a projection distance of the virtual image. The adjuster changes a distance between the first optical member and the second optical member and an inclination angle of the first optical member with respect to the display according to the projection distance of the virtual image.

Abstract: A NED-RapSIS with concentric imaging and optical elements comprising a display with spherically curved concave image surface topped with polarizer; a spherically curved concave composite reflector having polar arrayed alternating mirror-quarterwavelength retarder strips, and clear optical slits; a spherically curved transparent counter-balance; a motor-driven driving crank near the edges that drives the reflector and counter-balance to circular-spherical movement; a slave crank near the opposite edge of composite reflector with its shaft and crank arms aligned to the concentric center another slave crank near the opposite edge of the counter-balance with its shaft and crank arms aligned with the shaft and crank arms respectively of the latter crank and aligned with the concentric center; a see-thru spherically curved mirror-polarizer composite with mirror at the convex side and polarizer at the concave side, and a support frame.

Abstract: An imaging system is provided. The imaging system includes a display including a first display half screen and a second display half screen, a retroreflective device provided on the display, a first beam splitter facing the first display half screen, a second beam splitter facing the second display half screen, a first optical shutter located on a surface of the first beam splitter, and a second optical shutter located on a surface of the second beam splitter.

Abstract: A head-up display device projects display light of an image on a projection member to virtually display a virtual image of the image. An illumination light source unit emits an illumination light. An image display panel causes the illumination light from the illumination light source unit to pass therethrough to be emitted as a display light from a display surface to display the image. A projection lens is located between the illumination light source unit and the image display panel and projects the illumination light from the illumination light source unit onto the image display panel. The image display panel is tilted so that a normal direction to the display surface intersects with an optical axis of the illumination light source unit. The projection lens is tilted so that a radial direction of the projection lens coincides with a tangential direction to the display surface.

Abstract: A head mounted display (HMD) adjusts the phase of light of a virtual scene using a spatially programmable focusing element. Depths of the virtual scene are approximated to one or more focal surfaces and the shape of the focal surfaces is then adjusted to minimize the distance of the focal surface to features in the virtual scene. The resulting shape of the focal surface is a continuous piecewise smooth three-dimensional curve. A phase function is generated for each focal surface that, when executed by the spatially programmable focusing element, reproduces a focal pattern corresponding to the each focal surface, which bends and shapes the wavefront to produce a focal pattern that conforms to the scene geometry.

Abstract: A display device system includes a display engine and optical waveguide. The display engine includes an image former, that produces light corresponding to an image, and one or more lens groups that collimate the light corresponding to the image and outputs the light from the display engine. Each lens group includes one or more lenses that share a mechanical axis. The light corresponding to the image produced by the image former has an optical axis ray coincident with a principal ray of the light that originates at a center of the image produced by the image former. At least one lens group has its mechanical axis tilted relative to the optical axis ray of the light corresponding to the image produced by the image former, to prevent a ghost image from being formed by light corresponding to the image that is reflected-back from the waveguide toward the display engine.

Abstract: An optical waveguide, which includes a medium layer and N semi-transmissive, semi-reflective films supported by the medium layer. The semi-transmissive, semi-reflective films are arranged in sequence along a first direction perpendicular to a thickness direction of the medium layer. The orthographic projections of two adjacent semi-transmissive, semi-reflective films on a plane parallel to the thickness direction of the medium layer have an overlap region. A contour of each semi-transmissive, semi-reflective film is a curved surface structure, curved surface structures of the N semi-transmissive, semi-reflective films are N continuous sub-curved surfaces formed by segmenting a same curved surface respectively, a sum of heights of the N sub-curved surfaces is a height of the curved surface, and a concave side of the curved surface structure of each semi-transmissive, semi-reflective film faces towards a same bottom surface of the medium layer.

Abstract: The present disclosure relates to a display device, and the display device according to an exemplary embodiment includes: a substrate having a rounded edge; a light blocking member disposed around a display area of the substrate, wherein a corner of the light blocking member has a rounded edge; a plurality of pixels disposed on the substrate; and a pixel electrode disposed in each of the plurality of pixels, wherein the pixel electrode has a horizontal stem, a vertical stem, and a plurality of fine branches, wherein the plurality of pixels includes a first pixel at least partially overlapping the light blocking member and a second pixel adjacent to the first pixel and not overlapping the light blocking member, and wherein a shape of a fine branch disposed in the first pixel is different from a shape of a fine branch disposed in the second pixel.

Abstract: An image display device is capable of easily adjusting a diopter scale with respect to a virtual image. The image display device includes an image generating unit that emits image light including image information, a first optical system that forms an intermediate image by condensing the image light, a second optical system that guides a virtual image to eyes of a viewer by deflecting the light from the intermediate image, and guides the light to the eyes of the viewer by transmitting external light, and an intermediate image position changing device that adjusts a position of the virtual image in depth direction by changing a position of the intermediate image.

Abstract: A display device includes a video display, an optical element, and a projector. The video display displays a video on the video display surface. The optical element receives, on an incident surface, at least a part of the video displayed on the video display surface, and emits an incident video, which is the part of the video received on the incident surface, from an emitting surface. The projector projects a virtual image viewed by a user by projecting light output from the video display and the optical element to a reflecting member. An inclined portion inclined with respect to at least a part of the video display surface is provided on at least a part of the emitting surface of the optical element.

Abstract: The present invention relates to the technical field of head-up display, and particularly relates to a head-up display system for an automobile. The head-up display system comprises a projection light source and laminated glass, and further comprises a transparent nanofilm; said film comprises at least two dielectric layers and at least one metallic layer; the projection light source is used for generating p-polarized light; the p-polarized light is incident on a surface of an internal glass panel distal to an intermediate film, said light having an angle of incidence of 42 to 72 degrees, such that the transparent nanofilm can reflect part of the incident p-polarized light.

Abstract: The invention relates to a method for operating a camera system (2) of a motor vehicle (1), in which a first camera (3, 5, 6) captures a first environmental region (14, 16, 17) of the motor vehicle (1), and a second camera (4) captures a second environmental region (15) extending behind the motor vehicle (1), wherein the cameras (3, 4, 5, 6) are electrically connected to a control unit (7) and are controlled by the control unit (7), and the control unit (7) is connected to a communication bus (28) of the motor vehicle (1), wherein upon an interruption of a communication connection (27) between the communication bus (28) and the control unit (7), a rearview image at least partially including the second environmental region (15) is displayed on a display device (18) of the motor vehicle (1) by the control unit (7).

Abstract: See-through type display apparatuses and electronic apparatuses including the same are disclosed. A see-through type display apparatus may include a multipath optical member that transfers a plurality of images along a plurality of paths to an ocular organ of a user, and an anisotropic optical member that is arranged between the multipath optical member and the ocular organ of the user. The anisotropic optical member may exhibit characteristics which vary based on a polarization direction of incident light. For example, the anisotropic optical member may function as a lens with respect to light that propagates along a first path and function in a different manner than the lens with respect to light that propagates along a second path. The anisotropic optical member may function as a flat plate with respect to the light that propagates along the second path.

Abstract: Techniques described herein are directed to adaptive virtual reality and augmented reality viewing based on a user's eye condition data. In a first implementation, a software application renders video content based on the user's eye condition data by mapping the user's eye condition data to video rendering parameters. The video content rendered based on the user's eye condition data may be made available to a virtual reality/augmented reality player and played using a head mounted display. The video content rendered based on the user's eye condition data may be pre-rendered before video content playback or rendered in real time during video content playback. In an additional implementation, the head mounted display may be calibrated and adjusted based on the eye condition data prior to video playback.

Abstract: A head mounted display (HMD) adjusts the phase of light of a virtual scene using a spatially programmable focusing element. Depths of the virtual scene are approximated to one or more focal surfaces and the shape of the focal surfaces is then adjusted to minimize the distance of the focal surface to features in the virtual scene. The resulting shape of the focal surface is a continuous piecewise smooth three-dimensional curve. A phase function is generated for each focal surface that, when executed by the spatially programmable focusing element, reproduces a focal pattern corresponding to the each focal surface, which bends and shapes the wavefront to produce a focal pattern that conforms to the scene geometry.

Abstract: The present invention discloses a short-range optical amplification module, which includes a first phase delay plate, a transflective mirror, a second phase delay plate and a reflective polarizing plate that are arranged sequentially, wherein: the transflective mirror includes a first optical surface and a second optical surface; the first optical surface is adjacent to the second phase delay plate; the second optical surface is a transflective optical surface, and the second optical surface is adjacent to the first phase delay plate; the focal length fs2 of the reflection surface of the second optical surface meets the following condition: F?fs2?5F, wherein F is the system focal length of the short-range optical amplification module, and F meets the following condition: 10 mm?F?35 mm.

Abstract: A full-range image detecting system including a planar light source, an image capturing device, a light sensing device, a processing unit and a measuring module is provided. The planar light source projects a photo image with periodical variations onto an object. The image capturing device captures a reflective photo image reflected from the object. The light sensing device detects the coordinates of at least three measuring points on the object for fitting a plane. The processing unit calculates a phase variation of the reflective photo image after phase shift, a relative altitude of the surface profile of the object according to the phase variation, and an absolute altitude of the surface profile of the object with respect to the plane to obtain an information of absolute coordinate. The measuring module detects the surface of the object according to the information of absolute coordinate of the object.

Abstract: According to one embodiment, a display device includes a polarization separation element which transmits first polarized light, and reflects second polarized light, a first optical modulation unit which displays a first image by using transmitted light, a second optical modulation unit which displays a second image by using reflected light, and a projector which projects the first image onto a first projection area of a projection plane, and projects the second image onto a second projection area different from the first projection area of the projection plane.

Abstract: A head-mounted display including a display, a first lens, at least one light source, at least one pinhole and at least one image sensor is provided. An eye ball observes the display by the first lens. The at least one light source emits at least one light beam to illumine the eye ball. The at least one pinhole is disposed outside a space between the display and the first lens. The at least one light beam reflected by the eye ball passes through the at least one pinhole to form an image on the at least one image sensor.

Abstract: The present invention provides a mirror display that enables simultaneous perception of a mirror image and an image with suppressed uncomfortable feeling. The mirror display of the present invention includes a half mirror plate including a half mirror layer, and a display device. The display device is disposed on the back surface side of the half mirror plate. The distance between a display surface of the display device and a display surface of the half mirror plate is not smaller than 100 mm. The half mirror layer preferably includes a reflective polarizer.

Abstract: A head-up display device includes a housing, a reflecting member, a projection light emitting unit, and a vibration transmitting member. The housing is fixed to a vehicle. The reflecting member is rotatably supported by the housing and is held at a rotation position. The projection light emitting unit projects projection light corresponding to information onto a window of the vehicle through the reflecting member. The vibration transmitting member is provided between the housing and the reflecting member and has elasticity. The vibration transmitting member is fixed to the housing and makes contact with the reflecting member in an elastically compressed state in an entire rotatable range of the reflecting member.

Abstract: According to one embodiment, a display device includes an optical modulation element configured to emit image light corresponding to an image by using illumination light from an illumination device, a polarization control element configured to emit first polarized light, and second polarized light on the basis of the image light receiving from the optical modulation element, a polarization separation element configured to transmit the first polarized light as transmitted light and reflect the second polarized light as reflected light, and a projector configured to project the transmitted light onto a first projection area of a projection plane, and projects reflected light onto a second projection area of the projection plane.

Abstract: A display mirror assembly for a vehicle is disclosed. The assembly comprises a display device defining a display surface having a display perimeter elongated along a length. The display device is in communication with a primary PCB. The primary PCB comprises a first side and an opposing second side. The first side is directed toward the display device. The assembly also comprises a heat sink in connection with the second side of the primary PCB and extending substantially coextensive with the length display perimeter.

Abstract: The invention relates to a system for controlling the luminosity of a head-up display (36) of a vehicle, said display (36) being configured to display an image, said system comprising means (32) for assessing luminosity connected to means (34) for determining a luminosity instruction for the display (36). The system is characterized in that said means (32) for assessing luminosity are capable of assessing the external luminosity towards the front of the vehicle and beyond the image displayed on said display (36), and in that said determination means (34) are capable of determining the luminosity instruction in accordance with the external luminosity assessed and of transmitting same to the display (36).

Abstract: A head-mounted display including a transparent display, a first liquid crystal lens and a second liquid crystal lens is provided. The transparent display is adapted to emit an image light beam. The first liquid crystal lens is disposed beside the transparent display. The transparent display is disposed between the first liquid crystal lens and the second liquid crystal lens. The second liquid crystal lens is adapted to receive an ambient light beam. The image light beam passes through the first liquid crystal lens by the phase changing of the first liquid crystal lens, and then the image light beam passes through a pupil.

Abstract: An imaging optical system for a display device that can be fitted on the head of a user and generate an image, with an optical element, which includes an entry surface, and a spectacle lens, which includes a coupling-out section. The imaging optical system is configured to guide the generated image fed to the optical element via the entry surface in the optical element, and to couple it from the latter into the spectacle lens, in which it is guided to the coupling-out section and coupled out via the coupling-out section to generate a virtual image. The optical element includes, in addition to the entry surface, at least one reflecting surface, on which the generated image is reflected for guiding in the optical element, and in that the optical element and the spectacle lens are formed together as a one-piece optical part.

Abstract: A head up display can use a catadioptric collimating system. The head up display includes an image source. The head up display also includes a collimating mirror, and a polarizing beam splitter. The light from the image source enters the beam splitter and is reflected toward the collimating mirror. The light striking the collimating mirror is reflected through the beam splitter toward a combiner. A field lens can include a diffractive surface. A corrector lens can be disposed after the beam splitter.

Abstract: A combination meter including a first meter and a second meter, which are visible from a front side, and a half-silvered mirror disposed in front of the combination meter and having semi-transparent property are provided. Also, an image output device displays an image toward the half-silvered mirror is provided. The half-silvered mirror reflects the image displayed by the image output device to display a virtual image in front of the meter. Thus, the virtual image is overlappedly displayed with respect to the combination meter, whereby a use intuitively recognizes high priority information.

Abstract: Compact and low mass augmented and fully virtual head mounted display designs are disclosed. The disclosed displays employ a display located between the eye and the main optical element of the head mounted display. These designs additionally afford the ability to support augmented reality displays because the user can see both the virtual image from the display and the real world if desired. The designs use semi-transparent displays where either the display emits circularly polarized light or the displays which emits light from one surface or the view of the display directly from the eye is obscured.

Abstract: A head up display for a vehicle according to an embodiment includes a display panel configured to emit an image light; a polarized light plate configured to make the image light emitted from the display linearly polarized; a reflective mirror configured to reflect the image light onto a windshield of a vehicle; a polarized light reflective mirror configured to be disposed to face the reflective mirror; and a phase delay mirror configured to convert a phase of the light inputted from the polarized light plate and reflect the converted phase to the polarized light reflective mirror, and to convert a phase of the light reflected from the polarized light reflective mirror and reflect the converted phase to the polarized light reflective mirror, thereby minimizing a width in the forward and backward direction.

Abstract: An optical system includes: a first optical member having a concave surface that reflects a light having a first circularly polarized light component and transmits a light having a second circularly polarized light component a rotation direction of which is opposite to a rotation direction of the first circularly polarized light component; and a second optical member that transforms the light having the first circularly polarized light component reflected from the first optical member into the light having the second circularly polarized light component to be reflected so as to be incident on the first optical member.