A case for portable electronic devices including smartphones includes a feature to prevent glare from a flash from affecting images and video captured by a camera lens and also a battery to extend battery life of the electronic device. Smartphones have telephony, Internet connectivity, and camera and video features. Photos and video can be uploaded through the Internet or sent to other phones. The case has a hole for a camera flash of the smartphone to pass through. The edging of the hole is colored black or another dark color to prevent glare from appearing in the photos or video taken by the smartphone when using the camera flash.

A light-adjustment module for camera includes a light source unit and a light-adjustment unit. The light source unit includes light-emitting elements disposed around a lens of the camera, and the light-emitting direction of each light-emitting element is parallel to the image-capturing direction of the lens. The light-adjustment unit is disposed above the light source unit and includes secondary optical elements respectively corresponding to the light-emitting elements. Each secondary optical element includes a light-transmitting cover, and each light-emitting element is accommodated inside the corresponding light-transmitting cover. An inner wall of each light-transmitting cover includes a first light-guiding inclined surface and a second light-guiding inclined surface.

A first slope of the first light-guiding inclined surface is different from a second slope of the second light-guiding inclined surface. A light emitted by each light-emitting element is deflected through the corresponding first light-guiding inclined surface and the corresponding second light-guiding inclined surface.

An aircraft (11) includes an enclosure and a system for surveilling areas of interest inside the enclosure. The enclosure includes a transverse aisle (13) and a longitudinal aisle (15) that intersect at an intersection zone (19), a first access door (14) being located at one end of the transverse aisle (13) and a second access door (22) being located at one end of the longitudinal aisle. In addition, the surveillance system includes a panoramic camera (17) with a panoramic field of view, the camera being positioned at the intersection zone (19) such that an area of interest associated with the first access door (14) and an area of interest associated with the second access door is located within the field of view of the panoramic camera.

Introduced here are light sources for flash photography configured to produce high-fidelity white light that is tunable over a broader range of correlated color temperatures (CCTs) than conventional flash technologies. The light source can include multiple independently controllable color channels representing illuminants (e.g., light-emitting diodes) of different colors with varying degrees of saturation. Operating collectively, the multiple color channels can produce a high spectral quality white light corresponding to different CCTs (e.g., warm white light having a red hue, cool white light having a blue hue). Operating independently, these same color channels can be pre-flashed in a variety of prescribed sequences to probe the spectral characteristics of a scene, thereby allowing for an enhanced, spectrally matched white flash as well as collecting per-pixel reflectivity data that can be later used in during post processing of the captured image.

A live-streaming flashlight camera includes a camera adapted to capture an image of an object, a light source adapted to illuminate the object to be captured by the camera, a battery connected to provide power to the camera and light source, and a processor in communication with the light source and camera and configured to: establish an ad-hoc wireless network connection with a mobile host device, and livestream the image of the object to the mobile host device via the ad-hoc network connection.

A lighting device capable of suppressing an excessive temperature rise of a light emission section even when a fan is incapable of normal rotation. The light emission section emits light for illuminating an object. The fan cools the light emission section. A motor driving section drives the fan for rotation. A strobe microcomputer determines whether or not the motor driving section is abnormal, and controls a light emission interval of the light emission section in continuous light emission, based a result of the determination.

In a thin flash module for a camera, a rectangular array of LEDs is mounted on a single lead frame. The lead frame connects the LEDs in series. The LEDs are much smaller than conventional LEDs in a flash module. The LEDs may be in 53 array or a 43 array, for example. An array of reflective cups is molded over the lead frame or attached to the 10 lead frame, where each of the cups has a substantially square aperture to produce a square sub-beam. A layer of phosphor is located within each cup overlying its associated LED to produce white light. The aspect ratio of the array is selected to generally match the aspect ratio of the camera's field of view (e.g., 16:9). Since the LEDs are very small, the height of the cups may be small to form an ultra-thin flash module. Thin lenses may instead be used.

Introduced here are computer programs and associated computer-implemented techniques for determining reflectance of an image on a per-pixel basis. More specifically, a characterization module can initially acquire a first data set generated by a multi-channel light source and a second data set generated by a multi-channel image sensor. The first data set may specify the illuminance of each channel of the multi-channel light source (which may be able to produce visible light and/or non-visible light), while the second data set may specify the response of each sensor channel of the multi-channel image sensor (which is configured to capture an image in conjunction with the light). Thus, the characterization module may determine reflectance based on illuminance and sensor response. The characterization module may also be configured to determine illuminance based on reflectance and sensor response, or determine sensor response based on illuminance and reflectance.

An illumination system is provided for an optical system that includes an imaging device for acquiring an image of a target, for decoding of a symbol or other analysis. The illumination system can include a first light source configured to provide illumination of a first wavelength, a second light source configured to provide illumination of a second wavelength that is different from the first wavelength. The light sources can be controlled for operations that include: illuminating the target with the first and second light sources simultaneously for acquisition of the image of the target; and altering an illumination output of at least one of the first light source or the second light source, while maintaining non-zero illumination output for at least one of the first light source or the second light source, to indicate a status of the optical system.

The mobile terminal provided by the present disclosure includes a terminal body and a control unit. The terminal body is provided with a flash lamp. A zoom lens is provided in an advancing direction of a light of the flash lamp. The control unit is configured to control the flash lamp to switch between a flash mode and a flashlight mode according to an input command. The zoom lens has a plurality of operating states and can converge the light of the flash lamp in at least one operating state. Thus, the mobile terminal can be used as a flash and as a flashlight having a relatively large irradiation distance and further as a flashlight with adjustable irradiation distance.