To provide a light source unit whose overall size is relatively small and a projector which incorporates the light source unit, there is provided a light source unit including a first light source device for emitting light in a first wavelength range, a second light source device which is disposed on an axis of the light in the first wavelength range and having a luminescent light emitting area for emitting light in a second wavelength range by receiving the light in the first wavelength range, and a third light source device which is disposed on the axis of the light in the first wavelength range so as to face the first light source device for emitting light in a third wavelength range.

A display apparatus (1) of the present invention includes: a transparent screen (10) configured by a transmissive or reflective volume hologram; a first image projection section (50a) disposed on a first main surface (Sa) side of the transparent screen (10), and projecting first image light (La1) onto the first main surface (Sa); and a second image projection section (50b) disposed on a second main surface (Sb) side of the transparent screen (10), and projecting second image light (Lb1) onto the second main surface (Sb). The display apparatus (1) further includes: a first light-shielding section (40a) preventing external light from being directly incident on the first main surface (Sa) at least at same incident angle as the first image light (La1); and a second light-shielding section (30b) preventing external light from being directly incident on the second main surface (Sb) at least at same angle as the second image light (Lb1).

A wastewater monitoring system uses a camera in a fixed location in a wastewater pipe that takes a still photograph of a location of interest at defined intervals, such as five minutes. The photographs are retrieved from the camera, and are then analyzed on a computer system that aggregates the still photographs into a video stream, allows a user to define an area of interest on one of the still photographs, then uses suitable algorithms or heuristics to detect changes between the photographs in the video stream. Video clips of interest are then generated using the detected changes, and are identified to a user so the user can review the video clips of interest to determine flows in the wastewater pipe that was monitored.

A vehicle projection system that includes a projector positioned adjacent a first portion of a ceiling of the vehicle, the projector being configured to project a first image on the first portion of the ceiling. The image may be a moving image or may be various natural sky scenes such as a starry sky. The projector may be a pico-projector or a micro-projector. The vehicle may be an aircraft with the projector positioned on an overhead portion of the cabin. The projector may be positioned between two overhead bins. A second projector positioned on an overhead portion of the cabin may be configured to project a second image on a second portion of the ceiling. The projectors may be positioned on curtain headers within the aircraft. The system may include a control panel that controls the operation of the projectors in conjunction with an onboard sound system, if any.

A vehicle projection system that includes a projector positioned adjacent a first portion of a ceiling of the vehicle, the projector being configured to project a first image on the first portion of the ceiling. The image may be a moving image or may be various natural sky scenes such as a starry sky. The projector may be a pico-projector or a micro-projector. The vehicle may be an aircraft with the projector positioned on an overhead portion of the cabin. The projector may be positioned between two overhead bins. A second projector positioned on an overhead portion of the cabin may be configured to project a second image on a second portion of the ceiling. The projectors may be positioned on curtain headers within the aircraft. The system may include a control panel that controls the operation of the projectors in conjunction with an onboard sound system, if any.

An imaging apparatus and a text display method capable of checking an imageable range of a subject without displaying a live view image and also capable of displaying a text corresponding to audio around the subject or an ambient sound on the apparatus main body are provided. The imaging apparatus includes a transparent casing, an imaging unit that is arranged in the casing and acquires a captured image of a subject, a transparent display unit that is arranged in the casing and includes a display screen orthogonal to an imaging direction of the imaging unit, a sound collection unit that includes a microphone and acquires audio or an ambient sound, a text generation unit that generates a text based on the audio or the ambient sound acquired by the sound collection unit, and a display control unit that displays the text generated by the text generation unit on the display unit.

A retractable boom pole disclosed herein has a telescoping pole with hollow interior. A cable running at least substantially a length of the telescoping pole is centrally situated within the hollow interior at least substantially the entire length of the telescoping pole. A retraction mechanism (such as a spring-loaded or electrically powered motor device causing rotation of a spindle within the hollow interior) situated within a housing connected to the telescoping pole, causes the cable to be retracted as the telescoping pole is shortened in length. An electrical outlet or port situated within the housing is electrically coupled to the cable.

An electronic device is disclosed herein. The device includes a housing including a first opening formed in a surface thereof, a camera at least partially disposed in the housing, such that a lens of the camera is aligned with the first opening, a camera bracket including a flange structure disposed in the housing and spaced apart from the surface of the housing at a predetermined interval, a protruding structure extending from the flange structure into a space defined between the camera and an inner wall of the first opening to surround at least part of the camera, wherein the flange structure includes a first through-hole, and the protruding structure includes a recess, and wherein the protruding structure and the inner wall of the first opening form a microphone hole in communication with the recess and part of the first opening, an adhesive member disposed between the flange structure and an inner surface of the housing, the adhesive member including a passage, wherein one side of the passage is connected to the recess, and an opposite side of the passage is connected to the first through-hole, and a microphone element disposed in the housing and aligned with the first through-hole.

An internet protocol (IP)-based ceiling or wall-mounted speaker with optional IP-based camera and/or alarm indicator is provided. The IP-based speaker has a detachable add-on device for accommodating different types of interchangeable camera configurations and other components such as flush mount camera, camera providing angled view, night vision-type camera for different services and configurations. Multiple IP-based speakers are connected to an IP device to exchange audio data via an Ethernet connection for cost effective, flexible and convenient installations. The IP-based speaker has a speaker cone for talkback features, and relay for remote relay control of doors or gates for security applications as well as public address applications.

An image capturing apparatus with a mechanical shutter, an output unit that outputs a sound, and a setting unit that sets whether the output unit outputs sound includes an image capturing mode where image capturing occurs without the mechanical shutter and an image capturing mode where image capturing is automatically switched between using the mechanical shutter and not using the mechanical shutter, where during image capturing without the mechanical shutter the output unit outputs sound based on the setting made by the setting unit, and where during image capturing without the mechanical shutter when image capturing switches between using and not using the mechanical shutter, the output unit outputs sound regardless of the setting made by the setting unit.