1
Hideo Yokota, Hiroyuki Hamano, Masaharu Suzuki, Yasuhiro Tamekuni, Takashi Kato, Katsumi Azusawa, Hidekage Sato: Image pickup apparatus. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, May 18, 1999: US05905530 (72 worldwide citation)

An image pickup apparatus is disclosed which is provided with a distortional-aberration memorizing element for memorizing distortional-aberration information about an objective lens, a state-of-objective-lens detecting circuit for detecting a state of the objective lens, an image correcting circuit ...


2
Hiroyuki Hamano, Kenichi Kimura, Saburo Sugawara: Rear focus type zoom lens. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, July 28, 1992: US05134524 (44 worldwide citation)

A zoom lens of the rear focus type is disclosed, comprising, from front to rear, a first lens group of positive power, a second lens group of negative power, a third lens group of positive power and a fourth lens group of positive power, wherein zooming from the wideangle end to the telephoto end is ...


3
Nobuyuki Tochigi, Hiroyuki Hamano: Zoom lens. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, October 5, 1999: US05963378 (40 worldwide citation)

A zoom lens is disclosed, comprising, from front to rear, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive reactive power and a fourth lens unit of positive refractive power, an aperture stop being positioned between the s ...


4
Norihiro Nanba, Koji Hoshi, Hiroyuki Hamano, Makoto Sekita: Zoom lens and optical apparatus having the same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, April 8, 2003: US06545819 (40 worldwide citation)

A zoom lens is constructed with, in order from an object side to an image side, a first lens unit of negative optical power, the first lens unit including a negative meniscus lens having a concave surface facing the image side and a positive meniscus lens having a convex surface facing the object si ...


5
Makoto Sekita, Hiroyuki Hamano: Zoom lens and optical apparatus having the same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, December 24, 2002: US06498687 (36 worldwide citation)

A zoom lens includes a lens unit A of negative refractive power, and a lens unit B of positive refractive power disposed on an image side of the lens unit A. The lens unit B includes two cemented lens components and consists of not more than five lens elements. Then, the separation between the lens ...


6
Hiroyuki Hamano, Hiroki Yoshida: Variable magnification optical system having image stabilizing function. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, October 29, 2002: US06473231 (34 worldwide citation)

A variable magnification optical system having an image stabilizing function includes, in order from an object side to an image side, a fixed first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power and a fourth len ...


7
Hiroki Nakayama, Hiroyuki Hamano, Hiroki Yoshida: Zoom lens device and optical apparatus provided with the same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, August 12, 2003: US06606200 (33 worldwide citation)

A zoom lens device including a diffraction optical element constructed in a new way. In a basic form of the invention, the zoom lens device includes in order of lens units from a long conjugate side, at least a first lens unit including the diffraction optical element, a second lens unit which is mo ...


8
Hiroyuki Hamano, Akihisa Horiuchi: Rear-focus type zoom lens suppressing fluctuation of aberration. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, August 11, 1992: US05138492 (33 worldwide citation)

A zoom lens of the rear focus type of the invention comprises, from an object side, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power and a fourth lens unit of positive refractive power. The second lens uni ...


9
Hiroyuki Hamano: Camera apparatus having an optical low-pass filter. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, October 22, 1996: US05568197 (31 worldwide citation)

A camera apparatus having photographing lenses and an optical low-pass filter for limiting the image information of predetermined spatial frequency components, the filter being disposed at an arbitrary position on the optical axis of the photographing lenses. One of the sides of the optical low-pass ...


10
Hitoshi Mukaiya, Nobuyoshi Suzuki, Hiroyuki Hamano, Muneharu Sugiura, Akihisa Horiuchi: Zoom lens. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, September 24, 1991: US05050972 (31 worldwide citation)

A zoom lens comprising, from front to rear, a first group of positive power for focusing, a second group of negative power for varying the image magnification, a third group of negative power for compensating for the image shift, a fourth lens group of positive power in the form of a bi-convex lens ...