Fuji Photo Film Company, Limited

Sony Corporation

Saturn Licensing LLC

Masami Sato

Masaaki Fujiyama

Katsumi Ryoke

Takeo Arai

Roger Corn

Yosuke Narita

Masami Suzuki

Yasutoshi Okuzawa

Takashi Iwasaki

Kaoru Sekigawa

Yoshiyuki Yahagi

Yasuyuki Yamada

Takashi Kobayashi

Hiroshi Nagai

Goro Akashi

Yasuo Nishikawa

Takashi Yoneyama

Katsuhiko Meguro

Satoru Hayakawa

Toshimitu Okutu

Yoshihisa Sato

Noburo Hibino

Toshiyuki Kitahara

Masaki Suzuki

Hiroaki Doushita

Hideaki Kosha

Takeo Kishida

Tadashi Ishiguro

Takuji Ohkubo

Dai Yoneya

Minoru Kanazawa

Yuji Kawasaki

Fumihiko Hanzawa

Akihito Yajima

Yukihiro Maruyama

Susumu Ichikawa

Yusuke Ogawa

Mitsuo Inoue

Yukihira Maruyama

Daisuke Shirato

Yoshihiko Okamura

An object of the present invention is to provide a light source lens that makes it possible to improve unevenness in a luminance distribution, an illumination unit, and a display unit. A light source lens () according to the present disclosure includes an incident surface on which light from a light-emitting device is incident, and an exit surface () that has a diffusing function at a center part () for light incident through the incident surface as well as a light-condensing function at at least a portion of an intermediate part () and a peripheral part () for the light incident through the incident surface.

Light source lens, illumination unit, and display unit

Disclosed herein is a lens module for a projector of laser scanning type which is focus-free and has a short throw distance. In one example, a lens module includes a first optical member including a free-curved lens that passes a beam light reflected by a minute vibrating mirror; and a second optical member including a free-curved mirror to reflect the beam light which has passed through the first optical member, or a free-curved lens to pass the beam light which has passed through the first optical member. The beam light, which has been reflected by or has passed through the second optical member, has at the same position beam waists in horizontal and vertical directions perpendicular to a propagating direction of the beam light and also has beam radii coinciding in the horizontal and vertical directions.

Lens module and projector

An optical finder unit includes: light guide means for guiding an optical image of a subject to a finder window through an internal space formed in the optical finder unit; and a display unit capable of displaying information on the finder window through the internal space when the display unit is in a set state in which the display unit is set in a predetermined position, wherein the display unit in the set state blocks an opening communicating with the internal space, and the display unit can transit from the set state to a non-set state in which the display unit is not set in the predetermined position but unblocks the internal space.

Optical finder unit and imaging apparatus

Disclosed herein is an imaging device including a device main body, a focusing screen holding member configured to detachably hold a focusing screen, and a locking member configured to be provided between the focusing screen holding member and a lens attachment part of the device main body.

Imaging device and focusing screen replacement mechanism

An optical apparatus provided with a light combining prism having three light incident faces, receiving the three beams of light having different wavelength bands through the three light incident faces, and combining the three incident beams of light for output, three reflection type polarization plates, three plate-like reflection type polarization elements provided corresponding to the three reflection type liquid crystal panels, each receiving a different wavelength band of light among the three different wavelength bands, each selecting a first polarized beam component to pass and making it strike the corresponding reflection type liquid crystal panel by two perpendicular polarized beam components, and each making modulated light spatially modulated and converted to a second polarized beam component at the reflection type liquid crystal panel strike the corresponding incident face among the three light incident faces of the combining prism, and at least three fixing plates with surfaces which can be joined with the three light incident faces of the light combining prism, wherein at least the reflection type polarization elements between the reflection type polarization elements and reflection type liquid crystal panels are fixed to the corresponding light incident faces of the light combining prism via the fixing plates, and a projection apparatus using the same.

Optical apparatus and projection apparatus

In an LCD projector or other projection type display apparatus which uses a lamp such as a xenon lamp for a light source, the lamp is cooled efficiently without increasing ambient noises or without causing the whole apparatus to become large-sized, and at the same time the lifetime and the reliability of a fan which cools the lamp is made improved. When fansandwhich are disposed on a front side of the lamp mounted with a heat sinkrotate, external air of ordinary temperature is taken inlet and guided into ductsandso as to be blown onto the front face of the lamp by means of the fansand. Then, high temperature air which was warmed by being blown onto the lamp is exhausted from an outlet to the outside.

Projection type display apparatus and lamp cooling apparatus

A leader tape having: a support; an upper layer containing a powder, a binder, and a lubricant; and a lower layer containing a powder, a binder, and a lubricant which is at least 1.12 times as much as the lubricant of the upper layer; wherein the support, the lower layer, and the upper layer is in this order.

Leader tape and magnetic tape cartridge

A magnetic tape comprising: a coating layer containing ferromagnetic powder and a binder; a support; and a back layer, in this order, which satisfies the following conditions (1) to (3): (1) on a cut plane of the tape, an apex of a biggest convexity of the support does not protrude from a line connecting an apex of a biggest convexity of the coating layer and an apex of a biggest convexity of the back layer; (2) a Young's modulus in a thickness direction of a surface of the magnetic layer is from 1,000 to 2,500 kg/mm(from 9.8 to 24.5 GPa); and (3) a Young's modulus in a thickness direction of a surface of the back layer is from 600 to 2,000 kg/mm(from 5.9 to 19.6 GPa).

Magnetic tape

A variable speed reproduction of speech from memory depending on the indication of a jog dial, is accomplished by buffer memory (23) for speech sound and a jog dial (17) for controlling a read speed from this memory. Speech sound data is read out from the buffer memory (23) at a speed corresponding to the indication of the jog dial (17). The speech sound data is reproduced, independent of the jog dial (17), from a tape (13) and is written into the memory (23). A capstan motor drive circuit (18) detects the difference between the read address and the write address of the memory (23) and controls the reproduction speed of the sound speech data from the tape (13) in accordance with this difference. Since the read speed is directly controlled for the memory (23), no time delay exists between the speed command and the actual variable-speed reproduction. The address difference between write and read of the memory (23) is always monitored to keep the buffer from becoming empty so that continuous reproduction can be made, and so that, when the speech sound is edited, variable-speed continuous reproduction can be made for speech editing by the buffer memory (23) alone.

Digital sound reproducing and editing device for recording sound with

Digital sound reproducing and editing device with variable-speed

An abrasive tape comprises a flexible substrate and an abrasive layer, which is overlaid on the flexible substrate and which primarily contains fine abrasive grains and a binder resin. The thickness of the flexible substrate falls within the range of 3 .mu.m to 10 .mu.m. The fine abrasive grains of the abrasive layer may contain at least one kind of grains, which have a mean grain diameter falling within the range of 0.05 .mu.m to 20 .mu.m and which are selected from the group consisting of chromium oxide grains, .alpha.-alumina grains, silicon carbide grains, non-magnetic iron oxide grains, and diamond grains.

Abrasive tape

A magnetic recording medium comprises a magnetic layer containing a ferromagnetic powder, a binder and an abrasive material having a Mohs hardness of 8 or more on a non-magnetic support, wherein the average protrusion height, which represents the length between the central line of the surface roughness of the sectional curve of the magnetic layer and the upper end of the abrasive material existing (i) above the central line of the surface roughness of the magnetic layer and (ii) in the surface layer of the magnetic layer, is 15 nm or less. A process for preparing the magnetic recording medium comprises coating on a non-magnetic support a magnetic layer containing a ferromagnetic powder, a binder and an abrasive material having a Mohs hardness of 8 or more, and then polishing the surface of the magnetic layer with an abrasive tape, wherein as the abrasive tape there is used one containing at least one abrasive material having a higher Mohs hardness than the abrasive material to be incorporated in the magnetic layer.

Magnetic recording medium having a magnetic layer with a specified

An abrasive tape for polishing a magnetic head includes a substrate and an abrasive layer which is formed on the substrate. The abrasive layer is composed of abrasive grains and a binder having an acidic functional group. The abrasive layer contains basic carbon black having a pH within the range of 7 to 10 and a mean grain size of 0.01 to 0.1 .mu.m.

Abrasive member

Growing community of inventors

Kanagawa, Japan

Masami Sato