A vehicle includes at least one speaker, a camera configured to obtain a passenger's image, and a controller. The controller is configured to identify the passenger, to search for the identified passenger and emotion tag information related to a sound source output through the at least one speaker, and to control the at least one speaker or obtain passenger's emotional information according to the search result.

A vehicle includes at least one speaker, a camera configured to obtain a passenger's image, and a controller. The controller is configured to identify the passenger, to search for the identified passenger and emotion tag information related to a sound source output through the at least one speaker, and to control the at least one speaker or obtain passenger's emotional information according to the search result.

A chargeable gunsight bracket and a gunsight having the same are provided. The gunsight bracket includes a bracket body, a chargeable battery, and a power supply circuit board electrically connected to the chargeable battery. A bottom of the bracket body is provided with a groove, and the bracket body is further provided with a battery holder and a charging interface. The power supply circuit board and the chargeable battery are both mounted in the battery holder, two ends of the charging interface are respectively connected to the power supply circuit board and external environment. The chargeable gunsight bracket is fixedly mounted on a gun through the groove, and the chargeable battery is mounted in the battery holder. When power of the chargeable bracket is running out, the external power supply can directly charge the chargeable battery through the charging interface, so that the gunsight can be used continuously.

A chargeable gunsight bracket and a gunsight having the same are provided. The gunsight bracket includes a bracket body, a chargeable battery, and a power supply circuit board electrically connected to the chargeable battery. A bottom of the bracket body is provided with a groove, and the bracket body is further provided with a battery holder and a charging interface. The power supply circuit board and the chargeable battery are both mounted in the battery holder, two ends of the charging interface are respectively connected to the power supply circuit board and external environment. The chargeable gunsight bracket is fixedly mounted on a gun through the groove, and the chargeable battery is mounted in the battery holder. When power of the chargeable bracket is running out, the external power supply can directly charge the chargeable battery through the charging interface, so that the gunsight can be used continuously.

The invention relates to a collimator for testing a camera (6), comprising a collimator housing (1), wherein the collimator housing (1) has a longitudinal wall (8, 9) and two end walls (10, 11), the first end wall (10) having a light source (2) and the second end wall (11) having a lens (5), a reticle (4) being disposed between the lens (5) and the light source, with the reticle (4) being disposed obliquely with respect to the lens (5) and/or obliquely with respect to the longitudinal wall (8, 9) in the collimator housing (1).

The invention relates to a collimator for testing a camera (6), comprising a collimator housing (1), wherein the collimator housing (1) has a longitudinal wall (8, 9) and two end walls (10, 11), the first end wall (10) having a light source (2) and the second end wall (11) having a lens (5), a reticle (4) being disposed between the lens (5) and the light source, with the reticle (4) being disposed obliquely with respect to the lens (5) and/or obliquely with respect to the longitudinal wall (8, 9) in the collimator housing (1).

A viewing optic has a housing. The base of the housing has a front side, a rear side, a left side and a right side which together define an upper surface. A first control is positioned on the left side of the base. A second control is positioned on the right side of the base.

A high-assurance headtracking system for a head worn display (HWD) incorporating ground-truth fiducials is disclosed. In embodiments, the headtracking system includes a camera fixed to a mobile platform (e.g., an aircraft cockpit) and oriented toward a pilot wearing the HWD. Images captured by the camera detect fiducial markers attached to the HWD (and fixed in a device reference frame) and static fiducial markers fixed to the mobile platform, each static fiducial marker including a constellation of individual markers having a known position and orientation in the platform reference frame. The headtracking system include control processors for analyzing the images and identifying therein the device-frame and static fiducial markers. The headtracking system determines a device pose of the HWD relative to the platform reference frame and monitors the device pose for drift or error based on the known positions of the identified static fiducial markers.

An apparatus includes one or more light emitting diodes (LEDs) configured to be coupled to a power supply and to generate illumination, such as to generate a reticle in an optical scope. The apparatus also includes a first switch coupled in series with the one or more LEDs. The first switch is configured to selectively activate and deactivate the one or more LEDs based on whether the first switch is turned on or off. The apparatus further includes a low power detector configured to sense a low power condition of the power supply and to repeatedly turn the first switch on and off in response to the low power condition to cause the one or more LEDs to blink. The low power detector is configured to turn the first switch on and off at a given rate, and the given rate increases as the power supply is depleted.

An apparatus includes one or more light emitting diodes (LEDs) configured to be coupled to a power supply and to generate illumination, such as to generate a reticle in an optical scope. The apparatus also includes a first switch coupled in series with the one or more LEDs. The first switch is configured to selectively activate and deactivate the one or more LEDs based on whether the first switch is turned on or off. The apparatus further includes a low power detector configured to sense a low power condition of the power supply and to repeatedly turn the first switch on and off in response to the low power condition to cause the one or more LEDs to blink. The low power detector is configured to turn the first switch on and off at a given rate, and the given rate increases as the power supply is depleted.