Abstract: A weapon sight can be mounted on a weapon. According to a different aspect of the invention, the sight can detect a level of ambient illumination, and takes a selected action if the detected illumination level is below a selected level.

Abstract: A weapon sight can be mounted on a weapon.

Abstract: A weapon sight can be mounted on a weapon. According to one aspect of the invention, the sight only presents certain information on a display if the orientation of the sight satisfies an orientation criteria.

Abstract: A weapon sight can be mounted on a weapon. According to still another aspect of the invention, the sight takes a selected action if it detects the presence of a selected color within radiation originating externally of the sight.

Abstract: A weapon sight can be mounted on a weapon. According to a different aspect of the invention, the sight can detect a level of ambient illumination, and takes a selected action if the detected illumination level is below a selected level.

Abstract: Projection display systems for light valves such as liquid crystal display panels, and in particular to the use of color component rotators, such as retardation filters, to provide for improved projection display architectures.

Abstract: A firearm sight receives information regarding a factor, and then automatically adjusts the relative positions of a digital reticle and an image on a viewing section to compensate for the influence of the factor on a projectile trajectory. A different feature involves automatically adjusting a characteristic of the reticle based on the image. Another feature involves automatically adjusting the digital image to distinguish a portion thereof aligned with the reticle from an adjacent portion thereof. Yet another feature involves causing the firearm sight to generate an audible sound. Still another feature involves presenting information on the viewing section which represents the position of the firearm sight on the surface of the earth.

Abstract: Projection display systems for light valves such as liquid crystal display panels, and in particular to the use of color component rotators, such as retardation filters, to provide for improved projection display architectures.

Abstract: A firearm sight can detect engagement of a firing pin with a cartridge, and can respond to this event by saving an image which shows a target and reticle at a point in time just prior to the detected event. An electronic reticle can be downloaded into the sight. The effective position of the reticle within the sight can be adjusted electronically, and a zoom factor of the sight can be adjusted electronically. The sight can sense approximately transverse movement thereof, and can provide a user with an indication of the amount of transverse movement. With the use of an additional device, the sight can automatically align its reticle to the bore of a firearm on which the sight is mounted.