| KANTATSU CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120044583 | IMAGING LENS FOR SOLID-STATE IMAGING ELEMENT - An aperture stop, a first lens directing a convex surface toward an object near an optical axis and having positive refractive power, a second lens directing a concave surface toward an image near the optical axis and having negative refractive power, a meniscus-shaped third lens directing a convex surface toward the image near the optical axis and having positive refractive power, and a biconcave-shaped fourth lens directing concave surfaces toward the object and the image near the optical axis are arranged in this order from an object side of an imaging lens. The following Conditional Expressions (1) and (2) are satisfied. | 02-23-2012 |
| 20120014001 | OPTICAL LENS UNIT AND PLASTIC LENS FORMING MOLD AND PLASTIC LENS MANUFACTURING METHOD THEREFOR - Disclosed is an invention that aims to accurately position a lens barrel and an optical lens and form a plastic lens easily with a high-precision forming mold. A plastic lens is formed by filling resin into a cavity surrounded by a fixed mold, a movable mold, and inserts, which are removably incorporated into respective molds. A lens portion and conical surfaces of the plastic lens are formed with the inserts. This provides enhanced forming accuracy by making the conical surfaces and lens portion concentric with each other. When the plastic lens is to be incorporated into the lens barrel, the conical surface of the plastic lens is allowed to be in line contact with the vertical inner circumferential surface of the lens barrel to make the plastic lens concentric with the lens barrel for the purpose of accurate positioning. | 01-19-2012 |
| 20110310494 | IMAGE PICKUP LENS FOR SOLID-STATE IMAGE PICKUP ELEMENT - Disclosed is a low-cost, compact image pickup lens for a solid-state image pickup element. The image pickup lens includes, in the order from an object side, a first lens L | 12-22-2011 |
| 20110279913 | OPTICAL LENS AND LENS UNIT USING THE SAME - An annular inclined surface is formed on an edge portion of a first plastic lens in such a manner that the inclined surface surrounds a concave surface formed in a second surface of the first plastic lens. The inclined surface reflects unwanted light reflected by the concave surface so as to prevent the unwanted light from passing through the non-shading portion of the edge portion outside the effective area of a lens portion and then being reflected on an imaging area. This can suppress ghosting and flare due to the reflection of the unwanted light on the imaging surface. | 11-17-2011 |
| 20110255177 | IMAGING LENS - A concave surface is formed on an object side of a plastic lens of a one-piece construction, and a convex surface is formed on an image-point side thereof. The concave and convex surfaces are aspherical. A diffractive optical surface that exerts a chromatic dispersion ability is formed on the convex surface, and conditional expressions (1) and (2) below are met. | 10-20-2011 |
| 20110140987 | CHIP ANTENNA - This invention provides a chip antenna which is adaptable to a plurality of frequency bands. It is possible to transmit and receive radio waves in two frequency bands by forming a first antenna element portion | 06-16-2011 |
