Asahi Kogaku Kogyo Kabushiki Kaisha

Asahi Kogaku Kogyo K.k.

Mitsubishi Chemical Corporation

Yokogawa Hokushin Electric Corp.

Aashi Kogaku Kogyo K.k.

Masato Yamamoto

Toshimasa Yamanaka

Masahiro Nakajima

Isamu Hirai

Akio Takahashi

Koji Sato

Takayuki Sensui

Osamu Sato

Toshiyuki Kitazawa

Satoshi Nakano

Takenao Shishikura

Akihiro Arai

Yutaka Ohsawa

Toru Kondo

Susumu Koshino

Masaaki Haga

Masashi Furuno

Masahiro Koinuma

Tadayuki Kirigaya

Hideaki Tsuji

Yasuyuki Haneishi

Nobuhiko Matsudo

Hidehito Shimonaka

Naomi Hara

Yuuhei Konokawa

Masuo Hanawaka

Kouji Satou

Yoshio Fukai

Masahiro Kionuma

An acrylic film having few fish eyes and a method for producing latex of an acrylic rubber-containing polymer having low amounts of coarse particles, excellent filtering properties, and low filter clogging frequency during a filtration step for removing foreign substances. An acrylic film containing an acrylic rubber-containing polymer and a thickness of 30 to 300 &#x3bc;m, wherein the number of fish eyes that are 0.001 mmor greater in size is 130/mor fewer when a section having a light transmission rate of 75% or less for light having a wavelength of 400 to 1100 nm was detected as a fish eye A laminate film formed by laminating the acrylic film and a layer of at least one resin selected from thermoplastic resin, thermosetting resin, and photo curable resin. A laminated injection molded article formed by laminating the acrylic film on an injection molded article.

Acrylic film, method for producing same, laminate film, laminated injection molded article, and method for producing rubber-containing polymer

An acrylic film having few fish eyes and a method for producing latex of an acrylic rubber-containing polymer having low amounts of coarse particles, excellent filtering properties, and low filter clogging frequency during a filtration step for removing foreign substances are provided. An acrylic film containing an acrylic rubber-containing polymer (G) has a thickness of 30 to 300 &#x3bc;m, wherein the number of fish eyes that are 0.001 mmor greater in size is 130/mor fewer when a section having a light transmission rate of 75% or less for light having a wavelength of 400 to 1100 nm was detected as a fish eye.

A camera wherein exposure parameters fixed by a program line can be shifted along an exposure value EV line so that exposure parameters for an exposure operation are based on the shifted program line according to the preference of the camera user. The camera has setting means for temporarily changing these exposure parameters at a constant exposure value with respect to the values predetermined by a program line. A counting means counts the number of times that a shutter is released while the program line is shifted in one direction and control means stores the changed values for shifting the program line under certain conditions. In this way a learning function is provided to learn the aforementioned tendency of the user.

Camera with learning function

A camera having a zoom lens. The camera includes a shutter, an aperture and program exposure mode control. The program exposure control includes one or more reference program characteristics representing combinations of shutter speed and aperture corresponding to one or more of a portrait mode, a landscape mode and a close up mode. Each reference program characteristics define a predetermined aperture in a first range from a low shutter speed to a hand-induced vibration limit and defines a different aperture in a second range beyond the hand-induced vibration limit. One of the reference program characteristics is selected, wherein the hand-induced vibration limit is defined in accordance with a focal length of said zoom lens.

In representing a depth of field in a camera, the depth of field is displayed on the basis of the magnitude of a field depth feeling Df which corresponds to human feeling. The field depth feeling Df is obtained by processing at least one of a depth of field on calculation, an object distance, a lens hypen-focal length, a diameter of permissible circle of confusion, a lens aperture value and a lens focal length.

Representation of depth of field in camera

A camera having a manually actuable switch for temporarily shifting the camera to an optimum exposure value so that exposure factors, based upon a manually set shutter speed and a manually set aperture value, are replaced by optimum exposure factors based upon a metered brightness of the object to be photographed when the camera is set to a non-program exposure mode. A clear button associated with the camera functions as a manually actuable switch for temporarily shifting an exposure mode of the camera to another exposure mode when the camera is set to a hyper-manual exposure mode. In the hyper-manual exposure mode, a photographer sets exposure factors by actuating a Tv electronic dial and an Av electronic dial. Actuation of the clear button when the camera is set to the hyper-manual exposure mode causes the set exposure factors to be replaced with optimum exposure factors that are automatically calculated in accordance with an object brightness Bv. Thus, operating the clear button (manually actuable switch for temporarily shifting to another exposure mode) results in the mode of the camera being changed from a mode in which exposure factors are manually set by a photographer (via the setting of a shutter speed and an aperture value) to a mode in which optimum exposure factors are set based upon a calculation performed by a processor of the camera.

Exposure control apparatus of camera

In representing a depth of field in a camera, the depth of field is displayed on the basis of the magnitude of a field depth feeling Df which corresponds to human feeling. The field depth feeling Df is obtained by proccesing at least one of a depth of field on calculation, an object distance, a lens hypen-focal length, a diameter of permissible circle of confusion, a lens aperture value and a lens focal length.

An exposure control apparatus of a camera having a photometer for detecting a brightness of an object to be taken, an exposure value calculator for calculating an optimum exposure value in accordance with the object brightness, and an exposure factor setting device for setting a pair of exposure factors having a shutter speed and a diaphragm value, including an exposure factor manual setting device, a specific program exposure mode in which the exposure factors corresponding to the optimum exposure values are automatically set, and an exposure factor modifying device for enabling the exposure factor manual setting device to manually set one of the exposure factors when the exposure factor manual setting device is actuated in the specific program exposure mode.

An exposure control apparatus of a camera, wherein a pair of exposure factors that include a shutter speed and a diaphragm value can be manually and independently set. Furthermore, in the exposure control apparatus, an exposure value determined in accordance with the exposure factors can be locked, and one of the exposure factors can be varied, based on the locked exposure value, when the other exposure factor is varied by the associated manual setting means.

An exposure control apparatus of a camera, in which at least one of a pair of exposure factors that include a shutter speed and a diaphragm value is variable. An exposure factor setting device sets at least one variable exposure factor, while a limit value setting device varies and sets at least one upper and lower limit value of the exposure factor.

Exposure control apparatus of camera including exposure factor limit

Single-lens reflex camera body

An apparatus for indicating photographing conditions within a finder of a camera, including at least one indicator which has a plurality of indicating elements and which represent a single symbol or figure as a whole in the finder field of view, each of the indicating elements indicating an associated photographing condition.

Indicating apparatus within finder of camera

Lens for a single-lens reflex camera

35 mm camera

A single-lens reflex camera with a flash unit built into the camera body above the viewing pentaprism. The unit is movable from an operating position to a non-operating position, preferably enclosed in the camera body. The built-in flash unit may be automatically closed by inserting an external flash in a flash shoe. A display panel may be included on the top of the flash unit housing.

Growing community of inventors

Tokyo, Japan

Masato Yamamoto