Patent application number | Description | Published |
20110254992 | Image pickup optical system and image pickup apparatus using the same - An image pickup optical system having four lenses includes in order from an object side,
| 10-20-2011 |
20110304928 | IMAGE PICKUP OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS USING THE SAME - An image pickup optical system of the present invention comprises, in order from an object side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, which is formed into a meniscus shape facing its concave surface toward the object side, and an aperture located on the most object side. Thus, there can be provided an image pickup optical system and an image pickup apparatus having the same, in which the maximum effective lens aperture is small and various aberrations are corrected properly. | 12-15-2011 |
20120229920 | IMAGING OPTICAL SYSTEM AND IMAGING APPARATUS USING THE SAME - An imaging optical system smaller than conventional systems yet with well-corrected aberrations, comprises five lenses L | 09-13-2012 |
20130100323 | IMAGE FORMING OPTICAL SYSTEM, IMAGE PICKUP APPARATUS USING THE SAME, AND INFORMATION PROCESSING APPARATUS - An image forming optical system of four lenses includes in order from an object side, a first lens having a positive refractive power, which is a biconvex lens, a second lens having a negative refractive power, of which, an image-side surface is a concave surface, a third lens having a positive refractive power, which is meniscus-shaped with a concave surface directed toward the object side, a fourth lens having a negative refractive power, of which, an image-side surface is a concave surface, and an aperture stop which is disposed nearest to the object side. The image forming optical system satisfies predetermined conditional expressions. | 04-25-2013 |
20130242156 | ZOOM LENS, IMAGE PICKUP APPARATUS USING THE SAME, AND INFORMATION PROCESSING APPARATUS - A zoom lens includes in order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power, and at the time of zooming, the first lens group is fixed, the second lens group moves, the third lens group moves, and the fourth lens group is fixed. The first lens group includes in order from the object side, a negative lens, a reflecting optical element, and a positive lens. The second lens group includes in order from the object side, an aperture stop, a positive lens, a cemented lens having a negative refractive power, and a positive lens. The cemented lens includes a positive lens and a negative lens. | 09-19-2013 |
20150103413 | Optical System and Optical Instrument, Image Pickup Apparatus, and Image Pickup System Using the Same - An optical system which forms an optical image on an image pickup element, comprising in order from an object side,
| 04-16-2015 |
20150355445 | Optical System and Optical Instrument, Image Pickup Apparatus, and Image Pickup System Using the Same - An optical system which forms an optical image on an image pickup element, comprising in order from an object side,
| 12-10-2015 |
20160116724 | OBJECTIVE FOR MICROSCOPE - An objective for a microscope includes, in order from an object side, a first lens group with positive refractive power, a second lens group with positive refractive power, and a third lens group with negative refractive power. When NA represents a numerical aperture of the objective, FN represents a field number of the objective, β represents a magnification of the objective, ε represents an Airy disk diameter on an axis to a d-line of the objective, φ | 04-28-2016 |