| Patent application number | Description | Published |
|---|
| 20090290224 | Viewing optical system and imaging apparatus using the same - The invention provides a viewing optical system positioned between a viewing plane as a virtual plane and an eye point. The viewing optical system comprises, in order from the viewing plane side, a first lens group including a positive lens or a negative lens, a second lens group including a cemented lens in which at least one negative lens and at least one positive lens are cemented together, and a third lens group including a positive lens. Of lenses forming the first, second, and third lens groups, at least one lens surface is an aspheric surface. | 11-26-2009 |
| 20090290225 | Viewing optical system and imaging apparatus using the same - The invention provides a viewing optical system positioned between a viewing plane as a virtual plane and an eye point. The viewing optical system comprises, in order from the viewing plane side, a cemented lens and a positive lens component, and satisfies the following condition (1). | 11-26-2009 |
| 20090290226 | Viewing optical system and imaging apparatus using the same - The invention provides a viewing optical system positioned between a viewing plane as a virtual plane and an eye point. The viewing optical system comprises, in order from the viewing plane side, a first lens and a filter. | 11-26-2009 |
| 20090290863 | Viewfinder and imaging apparatus using the same - The present invention provides a viewfinder, characterized by comprising a reflection type display device on which an object image is displayed, an eyepiece optical system having a front group and a rear group, an illumination optical system for illuminating the reflection type display device and an optical device for putting an optical path taken by the illumination optical system over an optical path from said reflection type display device to the eyepiece optical system at a position of the widest of lens-to-lens spaces in the eyepiece optical system. The eyepiece optical system is located between the reflection type display device and an eye point, and satisfies the following condition (1): | 11-26-2009 |
| 20090290864 | Viewing optical system and imaging apparatus using the same - The invention provides a viewing optical system positioned between a viewing plane as a virtual plane and an eye point. The viewing optical system comprises, in order from the viewing plane side, a cemented lens in which at least one negative lens and at least one positive lens are cemented together and one positive lens, and satisfies the following condition (1). | 11-26-2009 |
| 20100149389 | Image pickup device - An image pickup device includes an image pickup element that receives light of an object image formed by a picture-taking lens; and a focus detection filter section that is so disposed near the image pickup element and on the side of the picture-taking lens as to be able to be inserted or withdrawn. The focus detection filter section, from the side of the picture-taking lens, includes a field diaphragm that includes a plurality of openings; a condenser lens disposed near a focus detection area on the surface of the field diaphragm; a pupil division diaphragm that corresponds to the opening of the field diaphragm and includes a pair of openings arranged at such an interval as to secure focusing accuracy; and a re-imaging lens group that includes a plurality of re-imaging lenses that are so arranged as to correspond to the openings of each of the pupil division diaphragms. When the focus detection filter section is inserted into an picture-taking optical path, the light intensity distribution of two light beams that each pass through different areas of the picture-taking lens and the openings of the field diaphragm is received by the image pickup element. The detecting of focus is performed by detecting a phase difference of an output signal representing the light intensity distribution obtained from the image pickup element. When a picture is taken, the focus detection filter section withdraws from the optical path. | 06-17-2010 |
| 20100283886 | OPTICAL UNIT, IMAGING UNIT, IMAGING BODY, AND IMAGING DEVICE HAVING THE IMAGING BODY - An optical unit ( | 11-11-2010 |
| 20100284684 | IMAGING BODY AND IMAGING DEVICE HAVING THE SAME - An imaging body ( | 11-11-2010 |
| 20100309363 | IMAGING BODY AND IMAGING DEVICE HAVING THE SAME - An imaging body ( | 12-09-2010 |
