Seiko Epson Corporation

Sun Medical Technology Research Corporation

Kazuto Shinohara

Motoyuki Fujimori

Akitaka Yajima

Masashi Kitabayashi

Shinji Haba

Kiyoshi Miyashita

Tomiyoshi Ushiyama

Kazuyuki Iinuma

Shohei Fujisawa

Keijiro Naito

Yoshiji Iwadare

Nozomi Koike

Masahiko Ito

Masaaki Hanaoka

Hiroaki Fujimori

Provided is a blood pump controller capable of preventing an operation error in performing a battery exchange with a small-sized and light-weighted configuration and exhibiting high waterproof property. A blood pump controller includes: a controller body for driving a blood pump; a battery pack having a first surface on which an electricity-supply-side battery connection connector is disposed and supplying stored electricity to the controller body; and a battery housing body having a slot which has a second surface on which an electricity-receiving-side battery connection connector is disposed and in which the battery pack is housed and held. When the battery pack is housed in the slot, an electrical connection is made between a pair of the battery connection connectors, the first surface and the second surface opposedly face each other, and a first sealing member provides sealing such that the first sealing member surrounds the pair of battery connection connectors.

Blood pump controller and ventricular assist system

A power source switching circuit for selectively connecting first and second power sources, at least one of which is a battery power source, to a load includes first and second power source connection parts for connection to the first and second power sources, a load connection part for connection to the load, first and second switch parts between each power source connection part and the load connection part, and a switching control part configured to perform a switch control of each switch part. Each switch part includes a plurality of FETs serially connected in the same direction such that a cathode side of a body diode is arranged on a load connection part side. The number of FETs is such that a sum of forward drop voltages of the body diodes exceeds the difference between a full charge voltage and a discharge voltage of the battery power source.

Power supply switching circuit and artificial heart system

The light emitted from a focal position-detecting light sourceand reflected from a reflectoris projected onto a screenand a projected image on the screenis detected by a focal position-detecting cameraBased on this projected image, the focal position-detecting light sourceis moved by a position adjusting systemso as to place the focal position-detecting light sourceat a focal position of the reflectorand the position of the focal position-detecting light sourceat this time is detected as the focal position of the reflectorWhen the focal position of the reflectoris detected, the projected image on the screendetected by the focal position-detecting camerais used, and, therefore, the conventional measurement by a three dimensional measuring instrument is made unnecessary, thereby improving the working efficiency.

Light source apparatus, its manufacturing method and apparatus, reflector focal position-locating method and apparatus, focal position-locating light source, discharge lamp emission position-locating method and apparatus, and discharge lamp-reflector positioning method and apparatus

A projector includes a first lens plate having a plurality of lenses, a second lens plate having a plurality of lenses, a light valve that modulates an output light beam from the second lens plate, and a light source apparatus. The light-source apparatus has a light-source lamp including an emission tube, a reflective mirror that reflects a divergent light beam from the light-source lamp to output a parallel light beam, the reflecting mirror having a reflective surface, a lamp housing that supports the reflective mirror, and an electrode lead. The electrode lead is led out of an end of the emission tube that is projected forward out of the reflective surface and is connected to an external connection terminal board which is positioned to a rear side of the reflective surface. The electrode lead is routed via the portion of the reflective mirror other than an effective area of the reflective mirror. A portion of the electrode lead positioned on the side of the reflective surface is arranged along a grove of a lens of the plurality of lenses of one of the first and second lens plate.

Light-source lamp unit, light-source device and projection-type display apparatus

A light-source lamp unit includes a light-source lamp unit detachably mounted, and a CPU constituting a drive and controller for the light-source lamp unit. The CPU senses lamp information obtained by a lamp-information storing block in the light-source lamp unit, pertaining to a lamp power rating, lamp life and whether a lamp is new or not, and starts counting operation time when the lamp is lit. The CPU compares the lamp life sensed and the operation time count, and forces the lamp to extinguish when the life of the light-source lamp expires. Prior to this action, the CPU gives a warning display before the life expiration of the lamp by a fixed duration of time, to warn that lamp replacement is needed. Because the lamp-information storing block in the light-source lamp unit stores the information about the lamp type and characteristics of the lamp, the light-source device can properly drive the lamp to light it and determine the lamp life even when a light-source lamp unit of a different type is used.

A display device performs various types of adjustment by canceling luminance dispersion caused by a light source at the time of optical illumination from the light source and correctly sets a gamma correction characteristic even when optical power from the light source varies or is abnormal. In luminance measurement of a display device, an adjustment method includes measuring transmitted light using a sensor and a reference sensor, calculating correction values on the basis of fluctuation values of reference data derived from measured data by the sensor and the reference data by the reference sensor, correcting the measured data, and thereafter converting the data into gradation values.

Adjustment method of display device

A light-source lamp unit,includes a light-source lamp unit,detachably mounted, and CPU,constituting drive and control means for the light-source lamp unit. CPU,senses the lamp information borne by lamp-information storing block,in the light-source lamp unit,, about a lamp power rating, lamp life and whether a lamp is new or not, and starts counting operation time when the lamp is lit. CPU,compares the lamp life sensed and the operation time count, and forces the lamp to extinguish when the life of the light-source lamp expires. Prior to this action, CPU,gives a warning display at a time that is earlier than the life expiration of the lamp by a fixed duration of time, to warn that a lamp replacement is needed. Since the lamp-information storing block,in the light-source lamp unit,stores the information about the lamp type and characteristics of the lamp, the light-source device,can properly drive the lamp to light it and determine the lamp life even when a light-source lamp unit of a different type is used.

Light-source lamp unit, light-source device and projection-type display apparatus and method of use

Projection display device

A liquid crystal panel unit is attached to a light incident surface of a prism composite. The liquid crystal panel unit includes a panel frame plate holding a liquid crystal panel, and a fixation frame plate glued and fixed to the light incident surface. The panel frame plate is fastened to the fixation frame plate by screws through an intermediate frame plate. By using wedges, the position of the panel frame plate with respect to the light incident surface is adjusted. This allows the liquid crystal panel to be reliably positioned and fixed so that the deviation amount in pixel matching is minimized and the focus adjustment can be accomplished correctly.

Growing community of inventors

Suwa, Japan

Kazuto Shinohara