The illumination apparatus includes a housing holding an optical member, a light emitter housed in the housing and including a light source configured to emit illumination light projected frontward through the optical member, an emission control substrate disposed behind the light emitter and on which electronic components for controlling emission of the light source are mounted, and a heat radiating member configured to cause heat transmitted from the light source to an outer face of the light emitter to radiate. The heat radiating member includes a lower face portion, a side face portion and a rear face portion disposed so as to respectively face a lower face and a side face of the light emitter and the emission control substrate.

The optical apparatus includes a lens barrel, a lens held by the lens barrel, and a light emitter and an accessory attachment portion that are provided in an object-side end portion of the lens barrel so as to be located outside further than the lens in a radial direction of the lens barrel, the light emitter emitting an illumination light, the accessory attachment portion allowing detachable attachment of an accessory. The accessory attachment portion is located inside further than the light emitter in the radial direction. The lens barrel is provided with a slope surface formed so as to decrease an outer diameter of the lens barrel toward an object side end of the lens barrel.

A method for performing remote tissue assessment of a tissue region includes selecting imaging parameters, obtaining M image datasets of the tissue region when the tissue region is illuminated by a light signal having a unique discrete wavelength, obtaining a reference image dataset of the tissue region without illumination, processing the M+1 image datasets to obtain M marker maps where each marker map corresponds to a different physiological marker, and analyzing at least one of the marker maps to determine whether a physiological condition exists at the tissue region or to monitor the status of an existing physiological condition at the tissue region. In one or more embodiments, the method may be performed by a portable light source unit including a housing configured for use with a mobile device having a camera, or by a system including a light source unit, an optical sensor module, and a mobile device.

An illumination device system includes: an illumination device including an engaging portion configured to engage with an illumination device support base, a main body portion, a light emitting portion configured to swing around a turning axis in relation to the main body portion, and a cable extending from the main body portion; and a diffuser, and the diffuser swings around the turning axis between an advanced position positioned in front of the light emitting portion and a withdrawn position withdrawn from the front of the light emitting portion, and includes a first locking portion configured to engage with the illumination device support base and holds the diffuser at the advanced position, and a second locking portion configured to engage with the cable and holds the diffuser at the withdrawn position.

A configurable light fixture for photography is presented. The light fixture includes a rail with a clamp section and threaded section. A fixed jaw is removably coupled to an end of the rail in the clamp section. One or more optional sliding intermediate jaws may be slidably coupled to the rail in the clamp section below the fixed jaw to create more clamping surfaces when desired to hold more than one lighting tube. A sliding end jaw is slidably coupled to the rail in the clamp section below the sliding intermediate jaw. A wing nut is coupled to the threaded section of the rail for applying linear pressure on the sliding end jaw thereby secure a lighting tube on each of the clamping surfaces.

An image capturing apparatus that controls a light emitting apparatus, comprises a wireless communication unit that performs communication with the light emitting apparatus at predetermined intervals, a deciding unit that, upon receiving an instruction to cause the light emitting apparatus to emit light to perform shooting, obtains a remaining time before the image capturing apparatus performs exposure, and decides information regarding a period of time remaining before the light emitting apparatus emits light, based on the remaining time to exposure and a period of time from when the remaining time starts decreasing, to when the wireless communication unit performs a first wireless communication thereafter, and a control unit that performs control so that the decided information regarding the period of time is transmitted to the light emitting apparatus through the first wireless communication with the light emitting apparatus.

A light with an integral speed ring is disclosed. The light may have a cover that attaches to a support plate. The support plate has at least one metallic plate that the cover may attach to. The support plate also has a plurality of fins and slots, both of which may be used for cooling. An LED plate is located on the support plate. The LED plate has a plurality of LEDs mounted thereon. A ring is provided that may selectively rotate with respect to the support plate. The ring may have a plurality of apertures located in its outer diameter.

A light emitting device capable of performing optimum temperature control of an LED in accordance with each of a plurality of photographing assist uses and sufficiently exhibiting performance of each of uses while ensuring reliability of the LED. The light emitting device includes an LED configured to assist photographing of an image capturing apparatus and a temperature sensor. The light emitting device operates at least in one of a first light emission mode in which a light emission time in one lighting operation of the LED is a first time period and a second light emission mode in which the light emission time is a second time period shorter than the first time period. Different light emission controls are performed on the LED between the first light emission mode and the second light emission mode based on temperature information detected by the temperature sensor.

The invention related to an apparatus for illuminating objects, having an emitting surface and at least two illumination devices, wherein the at least two illumination devices are arranged and designed to generated at least two different illumination distributions on the at least one emitting surface.

A lighting device capable of changing the light irradiation range includes a light emitting portion, and an optical member disposed in front of the light emitting portion. The optical member has a plurality of shapes such that two types of cylindrical concave surface having axial directions substantially perpendicular to each other are crossed each other. The plurality of shapes are formed in a central region of an entry surface through which light from the light emitting portion enters or a central region of an exit surface through which the light entering through the entry surface exits.