Canon Kabushiki Kaisha

Hoya Corporation

Showa Denko K.k.

Nippon Hoso' Kyokai

Isao Tanaka

Kazumasa Yoshikawa

Takayuki Kikuchi

Masataka Takeuchi

Mikio Ikenishi

Naoko Ito

Koro Shirane

Shizuo Tokito

Yoshitake Tanno

Mitsunori Suzuki

Youji Inoue

Akihiro Shoji

Mitsunori Suzuku

A glass lens blank for polishing in which a thickness of a defect-containing layer is suppressed to a minimum and thus it is possible to shorten the processing time required for grinding and polishing the glass lens blank for polishing after press-molding, a method of manufacturing the same, and a method of manufacturing an optical lens. A glass lens blank for polishing of which at least a main surface is a press-molding surface, wherein a defect-containing layer formed on the main surface has a thickness of 50 &#x3bc;m or less.

Glass lens blank for polishing, manufacturing method therefore, and optical lens manufacturing method

A lens system has a lens apparatus with a first wireless communication unit that communicates with a second wireless communication unit of a command apparatus, which wirelessly communicates with the lens apparatus to control the lens apparatus. The lens apparatus has a first setting unit that sets the first wireless communication as slave when the lens apparatus is initialized. The command apparatus has a second setting unit that sets the second wireless communication unit as master when the commanding apparatus is initialized, and the lens apparatus includes a data reduction unit that reduces data sent from the first to the second wireless unit.

Lens system that is communicable wirelessly

A movement signal generation apparatus is disclosed which can convert an analog position signal of an optical adjustment unit into digital signals representing a movement amount and a movement direction of the optical adjustment unit and output the digital signals. The movement signal generation apparatus includes an analog signal output section which outputs an analog signal in accordance with the position of the optical adjustment unit, and a digital signal generation section which generates two digital signals in accordance with a movement amount and a movement direction of the optical adjustment unit based on the analog signal.

Movement signal generation apparatus, optical device, optical device control apparatus, and video production system

A lens apparatus can be easily set even in cases where the lens body and demands are distant from each other upon shooting without a decrease in reliability. A lens body mounted on a camera body is provided with a command signal converting unit, a time-series position signal converting unit, a wireless communication unit, a communication condition monitoring unit and a communication process switch unit. A signal converting unit, to which a zoom demand and a focus demand are connected, is provided with a time-series command signal converting unit, a position signal converting unit and a wireless communication unit. The lens body and the signal converting unit are configured to wirelessly communicate with each other to eliminate the use of connection cables, thereby improving operationality while enabling highly reliable wireless communication.

Lens apparatus and shooting apparatus using same

Provided is a lens apparatus for driving an optical member based on a demand signal from a demand device, including: a connector for receiving the demand signal from the demand device by wire; a wireless receiver for wirelessly receiving the demand signal from the demand device; and an identifying section for identifying whether or not the demand device and the lens apparatus have a wired connection with each other, in which the demand signal from the demand device is selected based on a result obtained by the identifying section, and the optical member is driven based on the selected demand signal.

Lens apparatus

An image taking apparatus which includes an optical apparatus provided with a focus detection and focusing control unit for controlling a focus lens by an automatic focus detection and focusing control; a remote operation apparatus provided with a first switchover signal inputting unit for performing a switchover between a control of the focus lens by the automatic focus detection and focusing control and a control of the focus lens by a remote instruction control, and a second switchover signal inputting unit for performing a switchover between manual operations of the focus lens by a speed control and a position control; and a switchover signal superposing unit for superposing an output from the first switchover signal inputting unit and an output from the second switchover signal inputting unit.

Switchover image taking apparatus

A lens apparatus, with which compatibility, regarding AF operations, to cameras of a variety of manufacturers can be established more easily, is disclosed. The lens apparatus includes a focus driver which drives a focus lens, a terminal which is a member for communication with the camera. Further, the apparatus includes a signal generating circuit into which an image-pickup signal output from the camera is input via the terminal, and which generates a focus driving signal for the focus driver based on the image-pickup signal.

Autofocus lens apparatus and image pickup system

The optical control system includes a control unit and an optical apparatus. The control unit includes an output switching section. The output switching section is switchable between a first state, in which the command signal from a command signal generation section is output via a first terminal of a first connector, and a second state, in which a switching signal for selecting the second control section, the voltage level of the switching signal being different from that of the command signal, is output from the first terminal. The control switching section of the optical apparatus selects the first control section in response to input of the command signal, and selects the second control section in response to the switching signal, which is input from the second terminal of the second connector.

Optical control system

An organic polymeric phosphorescent compound and an organic light-emitting device employing the organic polymeric phosphorescent compound. The phosphorescent compound is a neutral organic polymeric phosphorescent compound emitting phosphorescence and used in an organic light-emitting device, and includes a phosphorescent unit and a carrier transporting unit.

Phosphorescent compound, a phosphorescent composition and an organic light-emitting device

A lens apparatus includes a movable optical member, a position detection unit for detecting a position of the movable optical member, a control unit for recognizing position information obtained by the position detection unit and controlling driving of the movable optical member, and a signal input/output unit for synthesizing virtual and photographed pictures. The signal input/output unit can transmit the position information from the position detection unit linked with the movable optical member by three methods based on an analog voltage signal, a digital pulse train and data communication from the control unit.

Lens apparatus and virtual system

An image-taking lens system includes an image-taking lens, a lens driving control part for driving and controlling the image-taking lens, a reading part for reading information from a storage medium in which a plurality of pieces of lens control information according to conditions of shooting are stored, and a setting part for setting control parameters of the lens driving control part on the basis of the information read by the reading part. The arrangement enables the operator of the system to quickly change control characteristics for zooming and focusing as desired according to shooting conditions.

Growing community of inventors

Utsunomiya, Japan

Isao Tanaka