Provided is an imaging apparatus capable of continuously imaging a natural video even though brightness is changed. In an imaging apparatus in which an exposure condition is set based on a characteristic of a transmittance control element, a first exposure condition range is calculated based on photometry of the imaging apparatus. Determination is made whether or not the calculated first exposure condition range is included in a second exposure condition range where a control range acquired by the transmittance control element is applicable. In a case where the calculated first exposure condition range is not included in the second exposure condition range, the exposure condition of the imaging apparatus is changed such that the first exposure condition range is included in the second exposure condition range.

A control device includes a memory storing instructions, and a processor configured to execute the instructions to obtain transmittance information related to transmittances of a plurality of neutral-density filters of an imaging device, receive a target transmittance, select at least one neutral-density filter of the plurality of neutral-density filters to achieve the target transmittance according to priority information related to a predetermined priority order of the plurality of neutral-density filters and the transmittance information of the at least one neutral-density filter, and control the at least one neutral-density filter to be in an effective state.

A control device includes a memory storing instructions, and a processor configured to execute the instructions to obtain transmittance information related to transmittances of a plurality of neutral-density filters of an imaging device, receive a target transmittance, select at least one neutral-density filter of the plurality of neutral-density filters to achieve the target transmittance according to priority information related to a predetermined priority order of the plurality of neutral-density filters and the transmittance information of the at least one neutral-density filter, and control the at least one neutral-density filter to be in an effective state.

To achieve improvement in functionality resulting from switching of optical elements and miniaturization of the device. A medical observation device includes: an imaging optical system configured to capture an image of a subject; an image sensor configured to photoelectrically convert the image of the subject captured by the imaging optical system; and an element holding frame configured to hold a plurality of optical elements and to be capable of being rotated around a rotation shaft. An axial direction of the rotation shaft is set to a direction orthogonal to an optical axis direction that is a direction of a line from the imaging optical system to the image sensor, and the element holding frame is rotated and thus at least one of the optical elements among the plurality of optical elements is positioned on an optical axis. Thereby, the element holding frame is rotated around a rotation shaft whose axial direction is set to the direction orthogonal to the optical axis direction and thus at least one of the plurality of optical elements is positioned on the optical axis, and therefore it is possible to achieve improvement in functionality resulting from switching of the optical elements and miniaturization of the device.

The present disclosure relates to a light shutter panel and a transparent display apparatus having the same. The light shutter panel comprises: a first light shutter panel and a second light shutter panel. Each of the first and second light shutter panels includes: a lower electrode plate, an upper electrode plate, a shutter layer, transparent spacers and a black ink. The lower electrode plate and the upper electrode plate are attached as facing each other. The shutter layer is disposed between the lower electrode plate and the upper electrode plate. The shutter layer includes a maximum light transmitting portion, a minimum light blocking portion, an ink storage portion and an electric field guide. The electric field guide is disposed between the ink storage portions. The transparent spacers maintain the gap between the lower electrode plate and the upper electrode plate. The black ink is filled into the ink storage portion.

Imaging devices and methods for generating a color image from a low-light scene. A method incudes filtering light from the low-light scene to produce a first light channel having filtered light filtered by a first filter and a second light channel having unfiltered light. The method includes producing a first information channel and a second information channel. The first information channel includes first brightness information corresponding to the first light channel and the second information channel includes second brightness information corresponding to the second light channel. The method includes receiving the first information channel and the second information channel and assigning the first brightness information to a first color channel. The method includes assigning the second brightness information to second color channel and processing the first color channel and the second color channel to produce a full-color image stream. The method includes outputting the full-color image stream.

A filter insertion/removal unit that is capable of removing and inserting a variable neutral density filter having a variable transmittance from and into the incident light path of object light to an imaging device unit is instructed to insert the variable neutral density filter, and a variable transmittance drive unit is instructed to lower the transmittance of the variable neutral density filter, both on the basis of detection of a transmittance lowering operation of an operating unit. Also, the variable transmittance drive unit is instructed to raise the transmittance of the variable neutral density filter, and the filter insertion/removal unit is instructed to remove the variable neutral density filter from the incident light path, both on the basis of detection of a transmittance raising operation of the operating unit.

Embodiments pertain to an imaging system configured to reduce or prevent the effect of unwanted specular reflections reflected by specular surfaces located in a scene. The system comprises at least one image acquisition device for acquiring a scene image comprising a specular surface providing specular light reflections. The at least one image acquisition device comprises at least one first image sensor and imaging optics having an optical axis for guiding light received from the scene along the optical axis onto the at least one first image sensor. The system further comprises at least one polarization filter operably positioned between the at least one first image sensor and an object. The system is configured to determine a polarization filter orientation such that an amount of specular light reflections incident onto the at least one first image sensor is reduced or eliminated.

An embodiment of a camera device may include an optical filter. The camera device may attempt to actuate the optical filter from an inactive position to an active position, record video, count a quantity of pixels, and/or a quantity of lines of pixels, in one or more frames of the video that are a color that is characteristic of the absence of the optical filter, determine that the quantity is greater than a threshold, and again attempt to move the optical filter to its active position.

An embodiment of a camera device may include an optical filter. The camera device may attempt to actuate the optical filter from an inactive position to an active position, record video, count a quantity of pixels, and/or a quantity of lines of pixels, in one or more frames of the video that are a color that is characteristic of the absence of the optical filter, determine that the quantity is greater than a threshold, and again attempt to move the optical filter to its active position.