A lens apparatus attachable to and detachable from an image pickup apparatus includes a detector configured to detect an angular shake of the lens apparatus, an image stabilizer configured to provide an image stabilization by driving part of an imaging optical system in the lens apparatus, and a controller configured to calculate a driving amount using a rotation angle based on an output of the detector and information for converting the rotation angle into the driving amount. The controller changes the information based on the image pickup apparatus attached to the lens apparatus.

A drive device compact in size and capable of moving an optical component with a large stroke while ensuring a required thrust. A movable section holds the optical component. A coil is disposed in one of a fixed section and the movable section, and first and second magnet sections are arranged in the other of them with a predetermined spacing in an optical axis direction of the optical component with the coil interposed therebetween. The drive device moves the movable section in a first direction orthogonal to the optical axis direction. When viewed from the optical axis direction, a distance in the first direction from the optical axis of the optical component to the polarization line of the first magnet section is different from a distance in the first direction from the optical axis to the polarization line of the second magnet section.

An entry guide tube and cannula assembly, a surgical system including the assembly, and a method of surgical instrument insertion are provided. In one embodiment, the assembly includes a cannula having a proximal portion that operably couples to an accessory clamp of a manipulator arm, and a distal tubular member coupled to the proximal portion, the tubular member having an opening for passage of at least one instrument shaft. The assembly also includes an entry guide tube rotatably coupled to the proximal portion of the cannula, the entry guide tube including a plurality of channels for passage of a plurality of instrument shafts, wherein the entry guide tube is rotatably driven relative to the proximal portion of the cannula by rotation of at least one instrument shaft about a longitudinal axis of the entry guide tube.

An embodiment relates to an aromatic polythiol compound for optical materials, and the aromatic polythiol compound according to the embodiment contains a phenyl group and a large number of sulfur atoms in its polythiol structure so that a polymerizable composition and an optical material obtained therefrom have excellent optical properties such as high refractive index and low specific gravity, as well as excellent mechanical properties such as low cure shrinkage; thus, they can be advantageously used for producing various plastic optical lenses such as eyeglass lenses and camera lenses.

An embodiment relates to an aromatic polythiol compound for optical materials, and the aromatic polythiol compound according to the embodiment contains a phenyl group and a large number of sulfur atoms in its polythiol structure so that a polymerizable composition and an optical material obtained therefrom have excellent optical properties such as high refractive index and low specific gravity, as well as excellent mechanical properties such as low cure shrinkage; thus, they can be advantageously used for producing various plastic optical lenses such as eyeglass lenses and camera lenses.

A remote control device is configured for a motion picture camera which has a lens and at least one lens focus setting motor for setting a focus distance of the lens and with which at least one distance measurement device for determining a distance measurement signal is associated. The remote control device comprises a portable operating unit having a base part, a first operating element that is movable into a continuously variable setting position, and a second operating element. In a manual focus operating mode a control device determines a manual focus setting value for the lens focus setting motor in dependence on the continuously variable setting position of the first operating element and outputs the manual focus setting value. In a focus transition operating mode, in dependence on an actuation of the second operating element the control device causes the lens focus setting motor to set the focus distance in accordance with a sequence of a plurality of different intermediate focus setting values that converge to a second desired starting from a first desired value of the focus distance. The first desired value or the second desired value of the focus distance corresponds to the distance measurement signal of the distance measurement device.

An accessory apparatus including an optical member, and configured to be detachably attached to an image pickup apparatus, includes a communication unit. The communication unit is configured to communicate with the image pickup apparatus with a first communication for the image pickup apparatus to perform notification to the accessory apparatus that the image pickup apparatus communicates with the accessory apparatus, and a second communication and a third communication to be used for performing communication between the image pickup apparatus and the accessory apparatus that has received the notification. A time interval between two request signals for requesting standby of communication between the image pickup apparatus and the accessory apparatus with the third communication is longer than that with the second communication.

An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, and a driving assembly. The movable portion is movably disposed on the fixed portion. The driving assembly is disposed on the fixed portion and drives the movable portion to move relative to the fixed portion.

A focus adjustment apparatus comprises a detection unit that detects one or more main subject candidates for a main subject from image signals based on a predetermined first condition, a selection unit that selects the main subject from the one or more main subject candidates, an acquisition unit that acquires operation information of an operation unit for moving a position of a focus lens, and a focus adjustment unit that controls the focus lens so as to focus on the selected main subject in a case where an autofocus mode is set and the operation unit is not operated. In a case where the operation unit is operated, the selection unit selects the main subject based on an in-focus position of the focus lens and fixes the selected main subject.

A camera includes a phased metalens positioned between an objective lens and an imager of the camera. The phased metalens is configured to adjust a focus plane of an image in a field of view of the camera in response to changes in an operating temperature of the camera. The phased metalens adjusts the focus plane for multiple frequencies or wavelengths light such that all light wave-fronts exiting the phased metalens arrive at the imager at a same time.