The projection display unit includes an illumination section including one or a plurality of light sources, a light valve that modulates light emitted from the illumination section and outputs the modulated light, a projection lens section that projects the light outputted from the light valve onto a projection surface, a light-receiving section including an imaging device that receives light incident via the projection lens section, and an optical device that allows for splitting into respective optical paths that pass through the illumination section, the light valve, and the light-receiving section. A first range corresponding to a portion of a pupil range of the projection lens section is assigned for projection, and the light-receiving section includes a light-shielding part that performs light-shielding of a selective part corresponding to the first range, at a position substantially optically conjugate with respect to an aperture of the projection lens section.

Systems and methods for detecting and projecting obstructed content over touch screen obstructions are disclosed. In embodiments, a computer-implemented method, includes: displaying, by a computing device, content on a touch screen of the computing device; detecting, by the computing device, an obstruction of the content on one or more areas of the touch screen; determining, by the computing device, obstructed content in the one or more areas; determining, by the computing device, a display configuration for a portion of the obstructed content, wherein the display configuration defines a manner in which the portion of the obstructed content is to be projected by at least one wearable projector device; and sending, by the computing device, the display configuration to the at least one wearable projector device adapted to project the portion of the obstructed content over at least one object causing the obstruction of the content.

A light pattern projector with a pattern mask to spatially modulate an intensity of a wideband illumination source, such as an LED, and a projector lens to reimage the spatially modulated emission onto regions of a scene that is to be captured with an image sensor. The projector lens may comprise a microlens array (MLA) including a first lenslet to reimage the spatially modulated emission onto a first portion of a scene, and a second lenslet to reimage the spatially modulated emission onto a first portion of a scene. The MLA may have a fly's eye architecture with convex curvature over a diameter of the projector lens in addition to the lenslet curvature. The pattern mask may be an amplitude mask comprising a mask pattern of high and low amplitude transmittance regions. In the alternative, the pattern mask may be a phase mask, such as a refractive or diffractive mask.

Methods and systems are provided for automatically selecting a target area to project content thereon. For example, a projection device receives content to be projected and content attributes of the content. The projection device also captures images of candidate areas and determines candidate area characteristics based on the captured images. The projection device generates a respective quality-of-projection indicator based on the content attributes and the candidate area characteristics. The projection device selects the candidate area with the highest quality-of-projection indicator as the target area on which the content is to be projected.

An apparatus and method for insuring the proper alignment of a detected vein pattern and a projected vein pattern are disclosed. The apparatus enhances the visual appearance of veins so that an error that can lead to improper patient care or injury can be avoided.

An anti-glare type vehicle road signboard and a road lane identification device is provided. The anti-glare type vehicle road signboard and road lane identification device includes: a light-irradiating unit provided in a vehicle for irradiating a non-visible light beam to the front of the vehicle while traveling; an image photographing unit for photographing an image reflected onto the road signboard and the road lane from the light irradiated by the light irradiating unit; and a shape projecting unit for transmitting an image signal photographed by the image photographing unit while traveling and projecting a high luminance light in a state wherein the shapes of the road lane and the road signboard overlap each other to thereby have the road signboard and the road lane clearly seen.

Described examples include an optical apparatus having a first lens, a first optical element having a first aperture, a second lens, and a second optical element having a second aperture. The optical apparatus includes a third lens having a first portion to receive projected light from the first lens through the first aperture and to project the projected light onto a target. Also, the third lens has a second portion to receive reflected light reflected from the target and to provide the reflected light to the second lens through the second aperture.

A projection display device includes an imaging element, a light source, a light valve that modulates light from the light source and emits modulated light in a prescribed polarization state, and an imaging optical system. The imaging optical system includes a first optical system that is used in common in projection and imaging, a second optical system that is used only in projection, a third optical system that is used only in imaging, and a separation member that separates an optical path from the second optical system toward the first optical system from an optical path from the first optical system toward the third optical system. The first optical system comprises a quarter wave plate and a polarizer arranged in a state of transmitting the light emitted from the light valve.

A projection display device includes an imaging element, a light source, a light valve that modulates light from the light source and emits modulated light, and an imaging optical system. The imaging optical system includes a first optical system that is used in common in projection and imaging, a second optical system that is used only in projection, a third optical system that is used only in imaging, and a separation member that separates an optical path from the second optical system toward the first optical system from an optical path from the first optical system toward the third optical system. The third optical system includes a first light shielding member that is arranged in the vicinity of a stop position of the third optical system and shields a part of a luminous flux.

A view sensor, a home control system including the view sensor, and a method of controlling the home control system are provided. The view sensor includes: a lens unit configured to receive light in order to capture an image or project light in order to display the image; an image acquirer configured to acquire the image by using the light received from the lens unit; a projector configured to provide light to the lens unit in order to display the image; a beam splitter configured to provide the image acquirer with the light received from the lens unit or transmit the light generated by the projector to the lens unit; and a controller configured to, in response to the image being captured, control the beam splitter to provide the image acquirer with the light received from the lens and, in response to the image being displayed, control the beam splitter to provide the lens unit with the light generated by the projector.