Patent application number | Description | Published |
20130163094 | Objective Optical System and Observation Apparatus Provided with the Same - An objective optical system of an embodiment according to the present invention is formed in such a way that: the objective optical system includes an immovable lens group which is arranged nearest to the object side, which is immovable in focusing, and which has negative power, and first and second movable lens groups at least one of which moves along the optical axis in focusing; and an amount of variation in magnification per movement of the first movable lens group is different from an amount of variation in magnification per movement of the second movable lens group. | 06-27-2013 |
20140162071 | RESIN COMPOSITION, AND PREPREG AND METAL FOIL-CLAD LAMINATE USING THE SAME - There are provided a resin composition which has high optical reflectance in an ultraviolet light region and a visible light region, undergoes less deterioration in optical reflectance when subjected to a heat treatment and a light irradiation treatment, has an improved peel strength to a metal foil, has excellent heat resistance, and can be used suitably for an LED-mounting printed wiring board; and a prepreg and a metal foil-clad laminate using the same. The resin composition of the present invention comprises: an aliphatic epoxy-modified silicone compound (A); a multibranched imide resin (B) having an isocyanurate ring and a carboxyl group; titanium dioxide (C); and a dispersing agent (D). | 06-12-2014 |
20150056454 | RESIN COMPOSITION, PREPREG, AND METAL FOIL-CLAD LAMINATE - Provided are a resin composition that can realize a prepreg, a metal foil-clad laminate and the like high in light reflectance in an ultraviolet region and in a visible light region, small in the reduction in light reflectance due to a heating treatment and a light irradiation treatment, good in peel strength of metal foil, also excellent in heat resistance after moisture absorption, also good in outer appearance, and also excellent in preservation stability, and a prepreg, a metal foil-clad laminate and the like using the same. The resin composition of the present invention contains at least an epoxy-modified silicone compound (A), a branched imide resin (B) having an isocyanurate group and a carboxyl group, a phosphorus curing accelerator (C), titanium dioxide (D) and a dispersant (E). The branched imide resin (B) is preferably at least one selected from the group consisting of an epoxy-modified branched imide resin, an alcohol-modified branched imide resin and an amine-modified branched imide resin. | 02-26-2015 |
20150210832 | RESIN SHEET, SUPPORT WITH RESIN LAYER, LAMINATE AND METAL FOIL-CLAD LAMINATE - The present invention provides a resin sheet that exhibits a small reduction in light reflectance due to a heating treatment and a light irradiation treatment with an excellent heat resistance being maintained. The present invention provides a resin sheet including a layer including a resin composition containing an aliphatic epoxy-modified silicone compound (A), a branched imide resin having an isocyanurate group and a carboxyl group (B), titanium dioxide (C) and a wetting and dispersing agent (D). | 07-30-2015 |
20150212304 | Zoom Lens and Image Pickup Apparatus Using the Same - A zoom lens includes in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power, and the fourth lens unit includes at least two lenses. At the time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit widens, a distance between the second lens unit and the third lens unit narrows, a distance between the third lens unit and the fourth lens unit fluctuates, and the first lens unit, after moving toward the image side, moves toward the object side. | 07-30-2015 |
20150267047 | RESIN COMPOSITION, PREPREG, LAMINATE, AND PRINTED WIRING BOARD - A resin composition containing a cyclic epoxy-modified silicone compound (A) represented by formula (1), a cyanic acid ester compound (B) and/or a phenol resin (C) and an inorganic filler (D): | 09-24-2015 |
20150268460 | Objective Lens and Observation Apparatus Having the Same - An objective lens including a first lens group immovable in changing magnification from a normal observation state to a close-up observation state, a second lens group arranged nearer to the image side than the first lens group and moving along the optical axis in the change of magnification, a third lens group arranged nearer to the image side than the second lens group and immovable in the change of magnification, and an aperture stop arranged between the second lens group and an image plane and immovable in the change of magnification, and the objective lens satisfying the following condition: | 09-24-2015 |
20160033749 | Zoom Lens and Image Pickup Apparatus Using the Same - A zoom lens comprising in order from an object side, a first lens unit having a negative refractive power, a second lens unit having a negative refractive power, a lens unit having a positive refractive power, and a rearmost lens unit having a negative refractive power, and the rearmost lens unit is positioned nearest to an image in the plurality of lens units, and at the time of zooming, distances between the lens units in the plurality of lens units change. Moreover, an image pickup apparatus includes the zoom lens, and an image pickup element having an image pickup surface. | 02-04-2016 |