A light tunnel retention and adjustment mechanism for retaining and aligning a light tunnel in a light tunnel assembly. The light tunnel retention and adjustment mechanism includes one or more first compliant spring fingers that interface with the light tunnel along a first surface to provide a compliant spring force for adjusting alignment of the light tunnel in a first axis and fixedly retaining the light tunnel in position in the first axis. The light tunnel retention and adjustment mechanism...

A digital projector for providing digital images for display to a user, the digital projector comprises a housing having its vertical dimension substantially greater than its horizontal dimension; a light source enclosed within the housing for providing light; a digital imager through which the light of the light source is projected for providing digital images for display to the user; a single mirror for reflecting the digital image from the digital imager; and a lens for receiving the digital ...

In an image projection on a screen, an image projection apparatus improves the safety of entry into a projection region by the human body and does not bring about the increase of complexity of the configuration thereof owing to the improvement of the safety. A monitoring area is regulated on the outside of the projection area (3) of the screen (2). A detection wave such as infrared rays is emitted from a detection wave source (1c) of the image projection apparatus (1). A reflection wave from the...

A projector has an acceleration sensor for detecting a tilt angle of the projector, a manual controller for manually setting a correction amount for a keystone distortion correction, an auto/manual switch, an upper edge basis corrector for determining parameters for an upper edge basis keystone distortion correction, a lower edge basis corrector for determining parameters for a lower edge basis keystone distortion correction, and an image processor for performing a keystone distortion correction...

A manufacturing apparatus for manufacturing a projection optical system has a plurality of optical modulators, a color-combining optical device and a projection optical device. The manufacturing apparatus positions each of the optical modulators relative to the color-combining optical device and at a back-focus position of the projection optical device. The back-focus position is determined by calculating a deviation amount of the optical path length of a light beam from the optical modulator to...

A projector is equipped with: a light emitting diode for emitting light; an image display element to which the light emitted from the light emitting diode is incident and which modulates the incident light and emits the light as image light; and an ultraviolet light incidence preventing member disposed between the light emitting diode and the image display element for preventing ultraviolet light from being incident to the image display element.

An arrangement (2) provided for projecting images, represented by image data, onto a projection surface has a projection system (24) that transmits the images that are to be projected and a scaling unit (22) for scaling the image data and a movement detection device (28) for detecting an undesirable movement of the projection system (24) and for transmitting at least one movement information item (MI) that signifies an undesirable movement of the projection system (24) and a processing device (2...

An optical relay includes a first lens, a lens module, and a second lens. The first lens is configured to receive modulated light from a first spatial light modulator. The first lens is configured to refract the modulated light into the lens module. The lens module is configured to collimate and focus the modulated light into the second lens. The second lens is configured to refract the modulated light onto a second spatial light modulator.

Apparatus for selectively displaying a first picture having a first format and a second picture having a second format include equipment for projecting either of the first and second pictures, and equipment for selectively positioning the first and second pictures, respectively, in a first picture position and in a second picture position angularly displaced relative to said first picture position in an optical path of the projecting means. This apparatus further includes equipment for adapting ...

A video projector includes a video cassette recorder (VCR), a light source for generating light for displaying image on a screen, a reflector for reflecting the light from the light source to generate a reflected light and for scattering the light from the light source to generate a dispersed light, an LCD display panel for receiving the reflected light and generating an image light to a screen through a first window, and a second window being selectively opened and closed for outputting the dis...