A light-emitting device includes: a plurality of light-emitting elements arranged in an array on a base member; and a compound eye lens that comprises at least four Fresnel lenses disposed above the base member and facing the plurality of light-emitting elements. In a top plan view, a center of each of the plurality of light-emitting elements is offset from a lens center of the corresponding one of the Fresnel lenses of the compound eye lens in a direction toward a center of the compound eye lens. The plurality of light-emitting elements include at least two first light-emitting elements and at least two second light-emitting elements, wherein an emission color of the first light-emitting elements is different from an emission color of the second light-emitting elements.

A photographic light generating panel includes, in some examples, front and rear support rings that are selectively foldable from an open position with a circular shape to a coiled position in which the front and rear support rings are each coiled into two or more loops. The light generating panel also includes a flexible rear panel having an outer edge that is coupled along a periphery of the rear support ring, a flexible front panel having an outer edge that is coupled along a periphery of the front support ring, an optional annular covering fabric layer coupled between the periphery of the front support ring and the periphery of the rear support ring, and multiple light emitting diodes (LEDs) between the front and rear panels. Light from the LEDs reflects off the rear panel toward the front panel, which disperses the light.

Provided are an image inspection device and an illumination device capable of thinning and downsizing the illumination device. An image inspection device includes a photographing part photographing an object, a light transmissive illumination part, and an optical member. The illumination part is arranged between the object and the photographing part and has a light emitting surface arranged to face the object. The optical member is arranged on the light emitting surface of the illumination part and transmits light emitted by the illumination part toward the object. The optical member includes a plurality of optical regions. The optical regions are arranged so as to surround a central region of the light emitting surface centered on an optical axis of the photographing part, and are configured to emit light having mutually different color characteristics toward the object.

Provided is a system that enables training for catheter surgery without using radiation. The system offering training for catheter surgery includes: a light source; a blood vessel model to which a catheter having a fluorescent agent applied thereto is inserted; a tank in which the blood vessel model is placed; a filter for rejecting white light that is not transmitted through the blood vessel model, of illuminating light from the light source; a camera for imaging fluorescence transmitted through the filter; a driver for changing the attitude of the light source; and a computer that performs a process of reversing black and white of an image signal output from the camera.

A light-emitting device includes: a plurality of light-emitting elements arranged in an array on a base member; and a compound eye lens that includes a plurality of lens parts disposed above the base member and facing the plurality of light-emitting elements. The plurality of light-emitting elements are arranged such that each of the plurality of light-emitting elements faces a corresponding one of the lens parts, and a center of each of the plurality of light-emitting elements is offset from a lens center of the corresponding one of the lens parts of the compound eye lens in a direction toward a center of the compound eye lens in a plan view. The plurality of light-emitting elements include first light-emitting elements and second light-emitting elements that are alternately arranged, wherein an emission color of the first light-emitting elements is different from an emission color of the second light-emitting elements.

A photographic light generating panel includes, in some examples, front and rear support rings that are selectively foldable from an open position with a circular shape to a coiled position in which the front and rear support rings are each coiled into two or more loops. The light generating panel also includes a flexible rear panel having an outer edge that is coupled along a periphery of the rear support ring, a flexible front panel having an outer edge that is coupled along a periphery of the front support ring, an optional annular covering fabric layer coupled between the periphery of the front support ring and the periphery of the rear support ring, and multiple light emitting diodes (LEDs) between the front and rear panels. Light from the LEDs reflects off the rear panel toward the front panel, which disperses the light.

The present invention relates to a lighting device comprising: a light emitter; a diffuser; one or more lenses located between the light emitter and the diffuser; and a control unit; wherein the control unit is capable of adjusting the properties of the diffuser. The present invention also relates to a lighting system comprising one or more such lighting devices, preferably wherein each of the lighting devices is arranged to be controlled using a single master control unit. The present invention also relates to a computer program product for operating such a lighting device or lighting system.

A flash system for an electronic device includes a ring-shaped light guide having a central opening. A camera lens is positioned in or behind the opening. A first light emitting diode (LED) is mounted on a printed circuit board (PCB), and the LED and PCB are encapsulated by a molded light guide of the flash system. An identical LED and PCB are encapsulated at an opposite end of the molded light guide (i.e., 180 degrees away). The back surfaces of each PCB diffusively reflects light from the LED on the other PCB. Light extraction features on the light guide surface uniformly leak out light from the LEDs. The light emission profile of the light guide has a peak axially aligned with the central opening of the light guide and rolls off to the edge of the camera's field of view.

A LED lens structure, configured to supply auxiliary photographing light for photographing equipment, includes a base and a LED light emitting chip formed on the base. An encapsulating lens formed by encapsulating silica gel is formed on the LED light emitting chip, and the encapsulating lens has an ellipsoid structure and provides a light exit surface that is an ellipsoid surface. The LED light source can project an approximately rectangular light spot on the light-receiving surface, and the imaging area of the trail camera is also rectangular, thus the light emitted by the LED light source can fall into the imaging area as much as possible, thereby improving effective utilization of light source, which can reduce the power of auxiliary lighting source, and effectively reduce the interference of the reflected light on the ground beyond the imaging area to the trail camera, thereby improving the image quality.

An underwater light and camera system having a video camera with a camera lens, a pool light with a light source and a pool light lens, and an anti-reflective shield surrounding a clear portion of the pool light lens. The pool light lens has the clear portion and a plurality of ribs disposed on an outer surface of the pool light lens, other than on the clear portion of the pool light lens. The anti-reflective shield is darkened to prevent light from the light source and light reflecting off a portion of the pool light lens disposed outside the anti-reflective shield to directly reach the camera lens.