Patents by Inventor Hiromi Nakanishi
Hiromi Nakanishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20020071641Abstract: An LD/PD module having a main silicon substrate having a cavity, a transmitting portion having an LD and an LD driving IC which is directly mounted upon the main silicon substrate, and a receiving portion having a PD and an amplifier which is indirectly mounted upon the main silicon substrate via an auxiliary insulating substrate embedded in the cavity. The auxiliary insulating substrate suppresses current-induced crosstalk from the transmitting portion to the receiving portion.Type: ApplicationFiled: November 15, 2001Publication date: June 13, 2002Inventors: Hiromi Nakanishi, Yoshiki Kuhara
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Patent number: 6393214Abstract: A lens-fitted film unit package, including: a lens-fitted film unit further including: (a) a preloaded photographic film; (b) a camera lens; (c) a shutter; (d) a diaphragm; and (e) an EV value switcher for switching the EV value of the lens-fitted film unit between the first EV value and the second EV value, which is greater than the first EV value; and a packing material; in which the lens-fitted film unit is packaged in the packing material under the condition that the EV value of the lens-fitted unit is switched to the second EV value.Type: GrantFiled: May 23, 2000Date of Patent: May 21, 2002Assignee: Konica CorporationInventors: Tetsufumi Takaba, Katsuyuki Koizumi, Hiromi Nakanishi, Hiroshi Kibayashi
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Patent number: 6374021Abstract: The PD/LD module of the present invention comprises a platform, a straight light guide (waveguide) formed on the platform for guiding transmitting light and receiving light, a light source (LD or LED) positioned at an end of the light guide for emitting transmitting light, a PD mounted just above the light guide for detecting receiving signals and a filter sloping upward on the way of the light guide for reflecting receiving light to the photodiode (PD) and passing transmitting light.Type: GrantFiled: February 14, 2000Date of Patent: April 16, 2002Assignees: Sumitomo Electric Industries, Ltd., NHK Spring Co., Ltd.Inventors: Hiromi Nakanishi, Yoshiki Kuhara
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Publication number: 20020015589Abstract: A strobe device, including: a strobe circuit board; a connecting conductor composed of a wire member; and a strobe emitting portion which includes; a) a light emitting tube, having electrode terminals on its both ends, b) a reflector for reflecting strobe light emitted by the light emitting tube toward a photographic object and c) a transmission window for covering a front surface of the reflector and for transmitting the strobe light. In the strobe device, the connecting conductor has a contact with the light emitting tube and electricity is supplied to the light emitting tube through the connecting conductor.Type: ApplicationFiled: October 5, 2001Publication date: February 7, 2002Inventors: Hiromi Nakanishi, Ken Ishida, Kiyoaki Hazama, Hiroshi Yamaguchi, Kiyoshi Kanai
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Patent number: 6341200Abstract: A lens-fitted film unit includes: a main body; a photographic lens provided in the main body, having an aperture value; an aperture provided in the main body; a shutter provided in the main body, having a shutter speed; a photographic film loaded in the main body, having image frames each including an unexposed portion and a pre-exposed portion on which a latent image has been formed; and a masking member for masking the pre-exposed portion of the photographic film when a photographing operation is conducted. The latent image has been formed on the photographic film with a same exposure amount as that obtained when an object to be photographed having a brightness of not less than 10 and not more than 12.5 in terms of light values in which a photographic film whose ISO sensitivity is 100, is exposed to light with an aperture value of the photographic lens set by the aperture and with the shutter speed of the shutter.Type: GrantFiled: May 6, 1999Date of Patent: January 22, 2002Assignee: Konica CorporationInventors: Kazuhiro Nakanishi, Kunikazu Takano, Hiroshi Kibayashi, Hiromi Nakanishi, Tetsufumi Takaba, Wataru Hiroshima, Tsuyoshi Takeda, Akira Aoki, Kanichi Onda
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Patent number: 6340831Abstract: A photodiode which senses only &lgr;2 without WDM in optical communication systems containing two signals of different wavelengths &lgr;1 and &lgr;2. The photodiode has a filter layer whose band gap wavelength &lgr;g satisfies an inequality of &lgr;1<&lgr;g<&lgr;2 for annihilating &lgr;1. For vanishing tails of signals, the peripheral pn-junction is formed around the central pn-junction. In the case, an n-electrode is mounted on both the peripheral p-region and the peripheral n-region.Type: GrantFiled: March 14, 2000Date of Patent: January 22, 2002Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yoshiki Kuhara, Hiromi Nakanishi, Hitoshi Terauchi
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Patent number: 6339679Abstract: A single use camera with a built-in electronic flash includes a main body; a photographic film loaded in the main body previously; an electronic flash unit having an electronic flash light emitting section and an electronic flash circuit; and a photographing unit having a photographic lens and a shutter, wherein the following condition is satisfied, 6≦A≦10 wherein A represents an exposure value, which is determined by an aperture value, a shutter speed and a sensitivity of a film loaded in the single use camera, when photographed in a condition in which the electronic flash unit is used.Type: GrantFiled: October 29, 1998Date of Patent: January 15, 2002Assignee: Konica CorporationInventors: Kazuhisa Aratame, Kijiro Suzuki, Kei Kaneiwa, Takao Hosaka, Hiromi Nakanishi
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Patent number: 6337953Abstract: A strobe device, including: a strobe circuit board; a connecting conductor composed of a wire member; and a strobe emitting portion which includes; a) a light emitting tube, having electrode terminals on its both ends, b) a reflector for reflecting strobe light emitted by the light emitting tube toward a photographic object and c) a transmission window for covering a front surface of the reflector and for transmitting the strobe light. In the strobe device, the connecting conductor has a contact with the light emitting tube and electricity is supplied to the light emitting tube through the connecting conductor.Type: GrantFiled: November 10, 1999Date of Patent: January 8, 2002Assignee: Konica CorporationInventors: Hiromi Nakanishi, Ken Ishida, Kiyoaki Hazama, Hiroshi Yamaguchi, Kiyoshi Kanai
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Publication number: 20020001466Abstract: A camera with a built-in electronic flash device, includes: a photographing lens; an aperture stop; an electronic flash emitting portion; a light receiving element for receiving light reflected on a photographic object which has been emitted by the flash emitting portion; and an electronic flash circuit for making the flash emitting portion emit light, the flash circuit having an automatic emission control circuit which stops emission of the flash emitting portion when an amount of the reflected light received by the light receiving element reaches a specified value. With respect to the automatic emission control circuit, Amin satisfies the following conditional expression, (A−1) EV≦Amin≦(A+0.Type: ApplicationFiled: May 31, 2001Publication date: January 3, 2002Inventors: Hiromi Nakanishi, Takao Hosaka
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Publication number: 20010055451Abstract: An LD module having a spot-size conversion LD for emitting a beam of a small aperture angle, an optical fiber or a waveguide and a lens for converging the LD beam to the fiber or the waveguide.Type: ApplicationFiled: April 6, 2001Publication date: December 27, 2001Inventors: Yoshiki Kuhara, Hiromi Nakanishi, Manabu Yoshimura
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Patent number: 6318908Abstract: Simultaneous bidirectional transmission type LD/PD module having a substrate, a signal transmitting part mounted on the substrate, a signal receiving part formed on the substrate, an end of a fiber communicating with a base station, a light waveguide coupling the fiber to the transmitting part and the receiving part, a filter separating the receiving signal light from the transmitting signal light and a resin mold package containing the substrate, the transmitting part, the receiving part, the filter and the lead frame. The receiving part is electromagnetically shielded with multihole metal members from the noise generated by the transmitting part. The resin penetrates through the holes and fully covers the receiving part.Type: GrantFiled: February 4, 2000Date of Patent: November 20, 2001Assignees: Sumitomo Electric Industries, Ltd., NHK Spring Co., Ltd.Inventors: Hiromi Nakanishi, Yoshiki Kuhara
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Publication number: 20010033722Abstract: A triple resin layered optoelectronic module having an inner fluid or gelled resin having a refractive index which is equal to the refractive index of the fiber/waveguide at a temperature between −40° C. and +85 ° C. for covering the interval between the fiber/waveguide and the LD/PD chip, a medium resin with elasticity for protecting the inner resin, and an outer resin with rigidity for covering and protecting the medium resin, the substrate, the LD/PD chip and the lead frame. A cavity temporally stores the fluid inner resin for preventing the inner resin from flowing away with a help of surface tension.Type: ApplicationFiled: March 9, 2001Publication date: October 25, 2001Inventors: Takeshi Okada, Hiromi Nakanishi, Yoshiki Kuhara
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Publication number: 20010024553Abstract: The object is to provide an optical module for optical transmission which has a double resin structure wherein a transparent resin and a fixing resin are combined, which is low in price, and is easily produced. A package with a inside-and-outside double structure comprising an inner container having barriers filled with a transparent resin and a hard outer container formed of a fixing resin. The inner container stores the highly fluid transparent resin and prevents it from flowing out. The outer container provides mechanical strength and airtightness.Type: ApplicationFiled: March 21, 2001Publication date: September 27, 2001Inventors: Hiromi Nakanishi, Takeshi Okada, Yoshiki Kuhara
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Publication number: 20010016094Abstract: A transmitting and receiving module helps reduce electrical crosstalk and noise during transmitting and/or receiving signals. Electrical isolation among metallized electrodes in a surface-mounted module with an optical fiber and an optical device can be achieved by using a low resistivity Si substrate, providing ground terminals on the surface of the Si substrate, and grounding the Si substrate. Noise and crosstalk during transmitting and receiving signals can be reduced by providing a copper contact adhered to the bottom surface of the Si substrate and by grounding.Type: ApplicationFiled: January 24, 2001Publication date: August 23, 2001Inventors: Yoshiki Kuhara, Hiromi Nakanishi
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Patent number: 6263137Abstract: The optical module comprises a substrate consisting of single member. This substrate can mount an optical fiber, a ferrule, and a semiconductor optical device. The substrate has first, second, and third regions successively arranged along a predetermined axis. The substrate also has a ferrule support groove, an optical fiber support groove, and a device mount portion. The ferrule support groove is formed in the first region and extends along the predetermined axis. The optical fiber support groove is formed in the second region and extends along the predetermined axis. The device mount portion is formed in the third region. The semiconductor optical device is provide to be optically coupled to the optical fiber.Type: GrantFiled: March 15, 1999Date of Patent: July 17, 2001Assignee: Sumitomo Electric Industries, Ltd.Inventors: Shunichi Yoneyama, Hiromi Nakanishi
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Patent number: 6257772Abstract: A PD module including a planar substrate, a first V-groove formed in the longitudinal direction on the substrate, a path-changing groove formed in the lateral direction vertically to the first V-groove on the substrate for ensuring a space at an extension of the first V-groove, an optical fiber fixed in the first V-groove for guiding signal light, a slanting reflection plane formed at the front wall of the path-changing groove for reflecting the light emanating from the fiber, a PD chip with a width B and a length C mounted on three spots of the substrate over the path-changing groove, the PD lying above the path-changing groove and the slanting reflection plane, a transparent adhesive with a refractive index similar to the fiber being supplied to a space including the end of the fiber, the path-changing groove and the bottom of the PD chip, and a fixation adhesive supplied on the first V-groove and on the transparent adhesive for fixing the fiber to the first V-groove, the light emanating from the fiber beinType: GrantFiled: September 17, 1999Date of Patent: July 10, 2001Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hiromi Nakanishi, Yoshiki Kuhara
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Patent number: 6236669Abstract: The module has a planar platform. A straight light guide is formed on the planar platform for guiding incoming light and outgoing light. A filter is interposed slantingly in the light guide for reflecting a part of light propagating in the light guide but for allowing the rest of the light to pass through. An LD or LED is mounted at an extension of the light guide for producing sending signal light and introducing the sending light into the light guide. A photodiode is mounted on the platform at a point on a path of the reflected light for sensing the incoming (receiving signal) light. Guide pins are fixed to the platform for attaching to and detaching from an optical connector having holes and an optical fiber. In the attached state, the end of the light guide of the module faces the end of the fiber in the connector.Type: GrantFiled: February 23, 1999Date of Patent: May 22, 2001Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hiromi Nakanishi, Yoshiki Kuhara
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Patent number: 6078748Abstract: A strobe circuit for use in a lens-fitted film unit is composed of a metallic thin plate punched in a circuit pattern; and insulating plate materials covering both obverse and reverse surfaces of the metallinc thin plate; wherein a part of the metallic thin plate is used as a component of the strobe circuit.Type: GrantFiled: October 10, 1997Date of Patent: June 20, 2000Assignee: Konica CorporationInventors: Kijirou Suzuki, Kei Kaneiwa, Hiroshi Yamaguchi, Kazuhisa Aratame, Hiromi Nakanishi, Masami Fujita, Hideaki Ono, Mamoru Kawano, Shuri Mizoguchi, Tetsufumi Takaba
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Patent number: 6043550Abstract: A photodiode which senses only .lambda.2 without WDM in optical communication systems containing two signals of different wavelengths .lambda.1 and .lambda.2. The photodiode has a filter layer whose band gap wavelength .lambda.g satisfies an inequality of .lambda.1<.lambda.g<.lambda.2 for annihilating .lambda.1. For vanishing tails of signals, the peripheral pn-junction is formed around the central pn-junction. In the case, an n-electrode is mounted on both the peripheral p-region and the peripheral n-region.Type: GrantFiled: September 3, 1998Date of Patent: March 28, 2000Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yoshiki Kuhara, Hiromi Nakanishi, Hitoshi Terauchi
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Patent number: 5963696Abstract: The end of an optical fiber is slantingly cut at an angle .theta.. A beam propagating refracts on the end surface at a slanting angle .alpha.. A Laser chip should ideally be mounted at a spot deviating by x.sub.0 =Ltan .alpha. from the center on the package, where L is the distance between the lens center plane and the laser surface. The fiber should be deviating in the reverse direction of the deviation of the laser. The deviation of the fiber should ideally be a product of x.sub.0 and the multiplying ratio of the lens. The orientation of the fiber should be in the direction where the lowest point of the end surface of the fiber is the closest to the lens axis. In practice, the fiber end should be aligned for maximizing the light power by moving the fiber end parallel in xy-plane and by moving axially in z-axis without rotation. The deviation of the laser alleviates the cost and the time of alignment in the laser module.Type: GrantFiled: September 19, 1997Date of Patent: October 5, 1999Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kazunori Yoshida, Hiromi Nakanishi, Naoyuki Yamabayashi