An object is to closely observe, by means of images of a camera having high performance specifications, changes in a structure due to heating or cooling of the structure to a temperature beyond a service temperature limit of the camera having high performance specifications and returning from that temperature to room temperature. A structure observation device includes: a camera case of a rectangular three-dimensional shape, having a glass window of heat-resistant and/or cold-resistant glass on at least one side of the three-dimensional shape; heat insulating walls covering the camera case except for the glass window; a fluid supply port and a fluid discharge port through which a cooling or warming fluid is circulated into; and a camera that is disposed inside the camera case and captures a still image or a moving image through the glass window and externally outputs or internally stores data of the captured image.

A light source package includes: a substrate; a first light source device disposed on the substrate, and configured to emit a light of a first wavelength; a second light source device disposed to be spaced apart from the first light source on the substrate, and configured to emit a light of a second wavelength, different from the first wavelength; and a light transmissive structure disposed above first and second light source devices, and including at least one first lens configured to increase a beam angle of the light of the first wavelength and at least one second lens configured to reduce a beam angle of the light of the second wavelength.

The field of inspection assemblies and in particular to inspection assemblies that include light sources for illuminating a field of view of a camera including an elongate housing having a longitudinal axis, a camera mounted in the housing and arranged to capture an image of a region within a field of view external to the housing, a light source mounted in the housing and arranged to illuminate the field of view, and a window element mounted in the housing, the window element comprising a light transmitting material and being located such that light emitted by the light source passes through the window element before illuminating the field of view. The window element has an internal surface, closer to the light source, and an external surface, further from the light source, and the external surface comprises a concave region.

The present disclosure relates to optical systems, vehicles, and methods that are configured to illuminate and image a wide field of view of an environment. An example optical system includes a camera having an optical axis and an outer lens element disposed along the optical axis. The optical system also includes a plurality of illumination modules, each of which includes at least one light-emitter device configured to emit light along a respective emission axis and a secondary optical element optically coupled to the at least one light-emitter device. The secondary optical element is configured to provide a light emission pattern having an azimuthal angle extent of at least 170 degrees so as to illuminate a portion of an environment of the optical system.

An illumination device selectively disposed on an object having a first side and a second side is provided. The illumination device comprises a light-emitting module, a camera unit and a rotation mechanism. The lighting direction of the light-emitting module points towards the front of the first side. The central filming direction of the camera unit points towards the front of the first side. The light-emitting module is coupled to the rotation mechanism such that the light-emitting module is capable of rotating about an axis of the rotation mechanism. When the lighting direction falls in a first angular range relative to the axis of the rotation mechanism, the light-emitting module provides a first mode illumination. When the lighting direction falls in a second angular range relative to the axis of the rotation mechanism, the light-emitting module provides a second mode illumination. Said first angular range is different from said second angular range. When the light-emitting module provides the second mode illumination, the central filming direction falls in the second angular range.

The present disclosure relates to optical systems, vehicles, and methods that are configured to illuminate and image a wide field of view of an environment. An example optical system includes a camera having an optical axis and an outer lens element disposed along the optical axis. The optical system also includes a plurality of illumination modules, each of which includes at least one light-emitter device configured to emit light along a respective emission axis and a secondary optical element optically coupled to the at least one light-emitter device. The secondary optical element is configured to provide a light emission pattern having an azimuthal angle extent of at least 170 degrees so as to illuminate a portion of an environment of the optical system.

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.

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.

An example electronic device includes at least one glass assembly provided to be adjacent to the outside of a camera module or an electronic device, wherein the glass assembly may include glass; a first reflective layer stacked on the glass and provided to transmit and reflect light emitted from a light source; a second reflective layer which is provided to be spaced apart from the first reflective layer, and which has a higher reflectivity than that of the first reflective layer; a reflective space formed between the first reflective layer and the second reflective layer; the light source disposed on one side of the reflective space to emit light; and a pattern layer which is stacked on the first reflective layer to face the reflective space, and which includes a pattern that becomes darker as the distance from the light source increases.

Introduced here are multi-channel light sources able to produce a broad range of electromagnetic radiation. A multi-channel light source (also referred to as a “multi-channel emitter”) can be designed to produce visible light and/or non-visible light. For example, some embodiments of the multi-channel light source include illuminant(s) capable of emitting electromagnetic radiation within the visible range and illuminant(s) capable of emitting electromagnetic radiation in a non-visible range, such as the ultraviolet range or infrared range. By capturing images in conjunction with the visible and non-visible light, additional information on the ambient scene can be gleaned which may be useful, for example, during post-processing.