Fuji Xerox Co., Ltd.

Teiichi Suzuki

Naoki Hiji

Shigeru Yamamoto

Takehito Hikichi

Daisuke Nagao

Takayuki Yamada

Takashi Ozawa

Hiroyuki Hotta

Yasuaki Kuwata

Kazuhiro Suzuki

Hideo Nakayama

Akira Fujii

Akemi Murakami

Hiroshi Arisawa

Takashi Fujimoto

Hideki Fukunaga

Tomo Baba

Yoshio Nishihara

Mutsuya Takahashi

Ryoji Ishii

Mamoru Nobue

Yoshihisa Yamazaki

Masashi Hisada

Kouichi Oka

According to an aspect of the invention, an optical functional element includes a substrate, a semiconductor element portion, and a light emitting element portion. The semiconductor element portion includes a first part of a semiconductor multi layer structure formed on the substrate. The light emitting element portion includes a second part of the semiconductor multi layer structure and light emitting element structure formed on the second part of the semiconductor multi layer structure.

Optical functional element, optical functional element array, exposure device, and method of manufacturing optical functional element

A semiconductor laser apparatus has a Zener diode containing a first semiconductor region of a first conduction type and a second semiconductor region of a second conduction type joined with the first semiconductor region, and a vertical-cavity surface-emitting semiconductor laser diode stacked above the Zener diode and containing at least a first mirror layer of a first conduction type, a second mirror layer of a second conduction type and an active region sandwiched between the first and second mirror layers. The first semiconductor region and the second mirror layer are electrically connected and the second semiconductor region and the first mirror layer are electrically connected.

Semiconductor laser apparatus and manufacturing method thereof

A self-scanning light source head comprising: a substrate, surface emitting semiconductor lasers arranged in an array on the substrate, and at least one thyristor disposed on the substrate and serving as a switching element selectively turning ON and OFF light emission of the surface emitting semiconductor lasers, and an image forming apparatus using the same are provided.

Light source head and image forming apparatus

A surface emitting semiconductor laser includes a substrate, a lower reflective mirror formed on the substrate, an active layer formed on the lower reflective mirror, an upper reflective mirror formed on the active layer, an optical mode controlling layer formed between the lower reflective mirror and the upper reflective mirror, and a current confining layer formed between the lower reflective mirror and the upper reflective mirror. The active layer emits light. The upper reflective mirror forms a resonator between the lower reflective mirror and the upper reflective mirror. In the optical mode controlling layer, an opening is formed for selectively absorbing or reflecting off light that is emitted in the active layer. The optical mode controlling layer optically controls mode of laser light. The current confining layer confines current that is applied during driving.

Surface emitting semiconductor laser, method for fabricating surface emitting semiconductor laser, module, light source apparatus, data processing apparatus, light sending apparatus, optical spatial transmission apparatus, and optical spatial transmission system

A manufacturing method for a three-dimensional structural body includes sequentially bonding/transferring and laminating plural cross-sectional form members, each held in space above a first substrate through a coupling member and a frame member and corresponding to a slice pattern of the three-dimensional structural body, onto a second substrate.

Manufacturing method for three-dimensional structural body

A method for manufacturing a vertical cavity surface emitting laser formed by laminating a plurality of layers on a substrate, includes coupling two layers of the plurality of layers by joining at room temperature or joining while heating.

Method for manufacturing vertical cavity surface emitting laser and multiple wavelength surface emitting laser, vertical cavity surface emitting laser, multiple wavelength surface emitting laser, and optical communication system

A reflective-type multi-color display device is capable of obtaining a vivid and bright multi-color display with less display layers, and therefore, with a state where a parallax is decreased and a cost of the device can be reduced. Specifically, the display device of the present invention includes a cell having a display layer comprising a right-handed cholesteric liquid crystal which selects and reflects blue, a cell having a display layer comprising a left-handed cholesteric liquid crystal which selects and reflects green, a cell having a display layer comprising a right-handed cholesteric liquid crystal which selects and reflects yellow and a cell having a display layer comprising a left-handed cholesteric liquid crystal which selects and reflects red, these layers being laminated in this order from the observation side. A color filter which transmits red and absorbs the other color light is provided between the cell and the cell . A black light-absorbing layer is formed at the back side of the cell

Multi-color display device

A cholesteric liquid crystal display capable of rewriting at a high speed is provided, which includes a cholesteric liquid crystal display element forming pixels at intersection portions of scan-electrodes of a scan-electrode group and data-electrodes of a data-electrode group, in which L-lines (L: integer lager than 2) of the scan-electrodes each of the scan-electrode group form a block. The drive circuit sequentially selects one block during one selection time, simultaneously applies coded drive voltages each corresponding to the L-lines of the scan-electrodes in the selected block, and applies coded data-voltages each corresponding to data-electrodes of the data-electrode group synchronously with the drive voltages.

Cholesteric liquid crystal display

A bright, and contrasty reflective display can be performed without using polarizer films, and display switching can be performed fast. A ferroelectric liquid crystal is sandwiched between substrates, and electrodes are formed face to face with each other in a direction parallel to the substrates. The ferroelectric liquid crystal, when no electric field is applied to it, goes into a planer state in which a helical axis becomes perpendicular to or almost perpendicular to the substrates, selectively reflecting light of specific wavelengths in a visible region. A driving circuit applies an electric field between the electrodes in a direction perpendicular to or almost perpendicular to the helical axis of the ferroelectric liquid crystal in the planer state. When an electric field equal to or greater than a threshold value is applied, the ferroelectric liquid crystal changes from a planer state due to a low electric field to a homeotropic state in which a helical structure disappears, going into a transparent state, wherein, in the homeotropic state, a cyclic change of refractive index disappears and liquid crystal molecules are arranged in the direction of the electric field. The change in this case is performed fast because the ferroelectric liquid crystal has spontaneous polarization. The ferroelectric liquid crystal may be filled between a pair of transparent substrates each having a transparent electrode formed thereon to apply electric fields in a direction parallel to or almost parallel to the helical axes.

Light modulator

A display device having a memory property capable of maintaining a displayed information even in a state of being separated away from a power source as a result of decreasing the effect of external noise. The display device is detachably attached to a control unit that includes a drive circuit and a power source for driving the display device. The display device has a memory property and maintains the displayed image even in a state of being detached from the control unit. An input protection portion which is an electric load such as resistor, IC or capacitor is provided for the input portion leading to matrix electrodes from the connection terminals for electrically connecting the display device to the control unit. This prevents the infiltration of noise through the connection terminals and lowers a change in the displayed image.

Display device and casing for containing the display device

An image sensor comprising a plurality of photo-electric conversion elements formed by layering a metal electrode, a photo-electric conversion layer, and a translucent electrode, the translucent electrode being divided into individual electrodes which are provided for the respective photo-electric conversion elements, and wherein at least the surfaces of the photo-electric conversion layer adjoining the translucent electrodes which appear between the individual electrodes are removed.

Image sensor and method of manufacture

An electroluminescence device which has a short light emission decay time and high light emission efficiency and an electronic printing apparatus which can print at a high speed using the electroluminescence device. The electroluminescence device comprises an electroluminescence element for emitting light when an AC voltage is applied thereacross, heating means for heating the electroluminescence element, and controlling means for controlling the heating means so as to start operation of the heating means after completion of application of the AC voltage across the electroluminescence element. The electronic printing apparatus comprises such an electroluminescence device, a photosensitive member, and optical means for focusing light from the electroluminescence element upon the photosensitive member.

Electroluminescence device and electronic printing apparatus using the

A manuscript reading device for reading a manuscript comprises a plurality of photodiodes for storing electric charges in parasitic capacitances thereof corresponding to lightness-and-darkness information on each minute area of a picture image on the manuscript by way of biasing said photodiodes to a predetermined state, and a plurality of thin film transistors connected in series to associated one of the photodiodes for transferring the electric charges stored in said parasitic capacitances to a corresponding wiring capacitance of a rear wiring group in response to the application of a predetermined voltage to gate electrodes thereof, the electric charges transferred and stored in said wiring capacitance being sequentially outputted as picture information corresponding to said picture image on the manuscript, wherein the thin film transistor comprises an n-type thin film transistor to a gate electrode of which a positive voltage is applied, and the photodiode is biased by a positive voltage.

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Ebina, Japan

Teiichi Suzuki