Abstract: Video sources and inertial sensors are attached to a weapon and to goggles. A computer receives video images from the weapon- and goggles-mounted sources and inertial data from the sensors. The computer calculates a location for an image from the weapon-mounted source within an image from the goggles-mounted source using the inertial sensor data. The sensor-based location is checked (and possibly adjusted) based on a comparison of the images. A database contains information about real-world objects in a field of view of the goggles-mounted source, and is used to generate icons or other graphics concerning such objects.

Abstract: Video sources and inertial sensors are attached to a weapon and to goggles. A computer receives video images from the weapon- and goggles-mounted sources and inertial data from the sensors. The computer calculates a location for an image from the weapon-mounted source within an image from the goggles-mounted source using the inertial sensor data. The sensor-based location is checked (and possibly adjusted) based on a comparison of the images. A database contains information about real-world objects in a field of view of the goggles-mounted source, and is used to generate icons or other graphics concerning such objects.

Abstract: A system that is electronic in nature; that is used to help hunters and crime-scene investigators detect blood. The system provides a variety of alerts to an operator, and these alerts include visual, audible, and vibration.

Abstract: An optical filtering apparatus fashioned as a pair of glasses; that enhance the contrast and visibility of objects with specified colors. A set of distinct attenuations are combined to produce an optical filter that promotes a specified color.

Abstract: Video sources and inertial sensors are attached to a weapon and to goggles. A computer receives video images from the weapon- and goggles-mounted sources and inertial data from the sensors. The computer calculates a location for an image from the weapon-mounted source within an image from the goggles-mounted source using the inertial sensor data. The sensor-based location is checked (and possibly adjusted) based on a comparison of the images. A database contains information about real-world objects in a field of view of the goggles-mounted source, and is used to generate icons or other graphics concerning such objects.

Abstract: An optical filtering apparatus fashioned as a pair of glasses; that enhance the contrast and visibility of objects with specified colors. A set of distinct attenuations are combined to produce an optical filter that promotes a specified color.

Abstract: A blood-trailing eyewear apparatus fashioned as a pair of glasses; providing contrast enhancements to help hunters with game recovery by enhancing red colors.

Abstract: A light-emitting device configured to illuminate blood includes a white light source configured to emit white light, and a filter configured to progressively attenuate portions of the white light having wavelengths up to a transition wavelength within a red light spectrum of the white light. The transition wavelength may be in the range of about 610 nm to about 618 nm.

Abstract: An apparatus including a light-emitting device configured to illuminate blood is described. The light-emitting device may include a red light source configured to emit red light. The light-emitting device may also include a green light source configured to emit green light. The light-emitting device may additionally include a first refractive lens and a reflector having a concave surface to reflect a portion of red light emitted by the red light source and a portion of green light emitted by the green light source toward the first refractive lens. The first refractive lens may be configured to direct red light emitted by the red light source to form a red light beam and to direct green light emitted by the green light source to form a green light beam. Additionally, the light-emitting device may include an optical adjuster configured to adjust a separation distance between the first refractive lens and at least one of the green light source and the red light source.

Abstract: An apparatus comprising a light-emitting device configured to illuminate blood. The light-emitting device may comprise a green light source configured to emit green light. The light-emitting device may also comprise a red light source configured to emit red light. The green and red light sources may be configured such that at least a portion of the green light and at least a portion of the red light combine to form a combined light area. The combined light area may cause a red color to be perceived as standing out in contrast to non-red colors. A filter device configured to transmit a light spectrum optimized to track blood is disclosed. The filter device may comprise a notch filter. A flashlight adaptor for illuminating blood is also disclosed. A method for illuminating blood is further disclosed.