There is provided a lens array and an lens array capable of suitably preventing irregular brightness without reducing resolution. A micro lens array of a screen includes upper-level microlenses and lower-level microlenses which are formed on the incidence surface of the screen, which have the same effective diameter, and which have a structure that generates an optical path length difference Δ in transmission light. By disposing the upper-level microlenses and the lower-level microlenses at an interval based on the effective diameter, the basic periodic structure of a lens period is formed. Further, the upper-level microlenses and the lower-level microlenses form a basic block comprising a combination of the lenses having a structure that generates the optical path length difference. A concave-and-convex period PC based on the basic block is an integer multiple of the lens period.

A front projection display device is provided including an image-generating source configured to generate an image, a wide angle lens system adapted to receive the image, and a screen. The wide angle lens system may be configured to increase distortion of the image in a first stage and decrease distortion of the image in a second stage. The screen may be configured to receive the image from the wide angle lens system on a first side and reflect the image back to a viewer on the first side. In another embodiment, a screen is provided for a front projection system, the screen may be configured to receive light from a steep angle and may include any number of surface topographies configured to reflect light back to the viewer along a desired viewing plane.

A suspension system including a set of optics which adjust the size and focus of the projection image originating at a Digital Micro-Mirror Device mirror set. The suspension and adjustment system for these optics may be mounted between the Digital Micro-Mirror Device housing and the optics carrier. This system has the capability to both adjust the resulting size and focus of the image at the same distance to a wall, as well as adjust for out-of-plane issues which often result in skewed images. This results in an adjustable focal and image size differing from the manufacturer's intended throw pattern and allowing broader use of the projector to make smaller images at the same throw distance.

A processing device generates a marker image to use as a reference for correcting a shape of a projection image projected on a projection surface from a projector, takes a taken image of the projection surface using the imaging device from an imaging position different from an observation position from which the projection surface is observed, generates a parameter for reducing a distortion of the projection image based on the marker image included in the taken image, displays an area image representing a range wherein projection can be performed on the projection surface on the display device, disposes a video content at an indicating position in the area image with an input to the input device, generates an original image including the video content, and corrects the original image thereby generating an input image for input to a projector configured to project the projection image.

First to third lens groups that are formed of anamorphic lenses having positive power and anamorphic lenses having negative power combined with one another and allow the distances between the anamorphic lenses to be changed cooperate with one another to allow field curvature to be changed both in the meridian direction and the sagittal direction.

A projection device includes a projection unit including a display element in which pixel lines each formed by pixels arranged in a first direction are arranged in a second direction and an optical system that projects light emitted from the display element and projecting an image based on input image data, a first correction unit for correcting a scale of each line data of the image data that corresponds to each of the pixel lines, a second correction unit for correcting a second-direction scale of each pixel data of the image data after the correction performed by the first correction unit, and an image cutting-out unit for cutting out image data of an area, which is projected from the projection unit, of the image data after the correction performed by the second correction unit and input the image data of the area to the projection unit.

A projection-type display device includes: an operation signal detector, configured to receive an operation signal that indicates adjustment content of a projected image that was instructed by way of an operation unit; an installation state detector, configured to detect, as an installation state of the projection-type display device, a first state and a second state that is rotated 90 degrees from the first state around an axis that is parallel to an optical axis of a projection lens; and a controller that, upon detecting a signal that corresponds to a first direction by way of the operation signal detector in the first state and the second state, adjusts the projected image by causing the projected image to shift in the first direction, or adjusts the projected image by causing a correction-object site in the projected image to move in the first direction.

The present disclosure relates to a method and system for optimizing a projector for projection of content. In one embodiment the method includes receiving by a processing element a plurality of test images corresponding to test patterns projected by the projector on a projection surface, where each of the test patterns include at least two points, comparing by the processing element the plurality of test images to assess one or more projector characteristics related to a distance between the two points, generating by the processing element a projector model representing the one or more projector characteristics, and utilizing the model to determine a projection path of the projector for the content.

A projection lens having an optical system includes: an incidence lens on which light from an electrooptic element is incident; and an emission lens that is positioned closest to a magnification side and emits an image toward a projection surface, in which an incidence optical axis of the incidence lens is shifted in a first direction orthogonal to the incidence optical axis with respect to a center of a screen of the electrooptic element, a projection angle, which is an angle of an emission optical axis of the emission lens with respect to the projection surface, is less than 90°, and assuming that an effective diameter of the emission lens is DE, and a focal length of an entire optical system including the emission lens is f, and a half angle of view of the entire optical system is ω, ω is equal to or greater than 60°, and a value of PA defined by Expression (1) is equal to or greater than 0.1 and equal to or less than 7.

PA=DE/(f×tan ω)  (1)

Provided is a projection-type image display device including: a projection unit including a light source configured to emit light having intensity corresponding to a pixel value of an input image and a deflection unit configured to deflect emitted light from the light source using a mirror to perform scanning on a projection object; a retiming unit configured to perform retiming on pixel data of the input image in accordance with a deflection angle in the deflection unit; a shape distortion correction table having a shape distortion correction amount in each shape distortion correction table calculation position; a brightness distortion correction table having a brightness distortion correction amount in each brightness distortion correction table calculation position; and an image correction unit configured to perform distortion correction on the input image by performing signal processing based on the shape distortion correction table and the brightness distortion correction table.