Canon Kabushiki Kaisha

Shingo Hayakawa

Kazuhiko Momoki

Shuichi Kiyohara

Yasuo Suda

Kenji Ito

Takeshi Koyama

Akira Yamada

Nozomu Kitagishi

Yoshihiko Aihara

Koji Suzuki

Masanori Ishikawa

Kazuo Fujibayashi

Shoji Kaihara

Koutaro Yano

Shouichi Yamazaki

Shuchi Kiyohara

An image pickup apparatus includes an image pickup region in which a plurality of pixels are arranged, each pixel including a plurality of photoelectric conversion portions disposed in the depth direction of a semiconductor; and a filter which is disposed on the incident side of the image pickup region and which has a characteristic wherein the transmittance of light in the visible wavelength region decreases as the wavelength of light becomes longer.

Image pickup apparatus with filter on incident side of image pickup region

If the thickness of a birefringence plate that forms an optical low-pass filter is not appropriately set, problems in terms of optical characteristics or machine works are posed. Hence, there is provided an optical low-pass filter which has at least one birefringence plate which is made of a uniaxial single crystal that causes birefringence of incoming rays, has a refractive index difference of 0.02 or more for ordinary and extraordinary rays, and satisfies one of:10&#xb0;&#x3c;&#x3b8;&#x3c;30&#xb0; &#x2003;&#x2003;(1)60&#xb0;&#x3c;&#x3b8;&#x3c;80&#xb0; &#x2003;&#x2003;(2)where &#x3b8; is the angle the optic axis of the birefringence plate makes with the normal to the surface of the birefringence plate.

Optical low-pass filter, and image sensing unit and apparatus using the same

An image stabilizing optical lens device including, in order from an object side to an image side of the image stabilizing optical lens device, a first lens unit having positive refractive power, a second lens unit having negative refractive power and being movable along an optical axis of the image stabilizing optical lens device to perform focusing, and a third lens unit having positive refractive power, the third lens unit including a front lens sub-unit having negative refractive power and being movable so as to be decentered with respect to the optical axis and a rear lens sub-unit having positive refractive power.

Image stabilizing optical lens device with decentering of lens sub-unit

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 refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i&plus;1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.

Zoom lens having an image stabilizing function

An image stabilizing optical objective lens system comprising, in the order from the side of the system closest to an object, 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, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power. The objective lens system performs focusing by moving the second lens unit in the direction of the optical axis of the system for focusing and corrects image blur by moving the fourth lens unit in the direction perpendicular to the optical axis.

Image stabilizing system

A viewfinder optical system includes an image inverting optical unit for inverting an image formed by an objective optical unit, the image inverting optical unit inverting the image by using a reflecting action of light, and an eyepiece optical unit on which light from the image inverting optical unit is made incident, wherein the viewfinder optical system has a diffractive optical surface.

Viewfinder optical system and optical apparatus having the same

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 refractive power, a fourth lens unit of negative refractive power, a fifth lens unit of positive refractive power and a sixth lens unit of negative refractive power, wherein, during zooming from the wide-angle end to the telephoto end, the air separations between the i-th and (i+1)st lens units are made to vary properly and the ratio of the focal length of the fourth lens unit to the longest focal length of the entire system is made to have a proper value. In particular, a zoom lens is disclosed wherein the second lens unit is made to decenter to stabilize the image.

A zoom lens includes, in order from as object 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, a fourth lens having a positive or negative refractive power, a fifth lens unit having a negative refractive power, and a sixth lens unit having a positive refractive power, and a sixth lens unit having a positive refractive power, wherein the separations between the lens units are varied to effect zooming. Further, the fifth lens unit is arranged to move in directions substantially perpendicular to the optical axis to compensate vibrations.

Zoom lens

A standard zoom lens of the negative-lead type having a vibration compensating function includes, in order from an object side to an image side, a first lens unit having a negative refractive power, the first lens unit moving along an optical axis during variation of magnification, a second lens unit having a positive refractive power, the second lens unit moving along the optical axis during variation of magnification, a third lens unit having a positive refractive power, the third lens unit moving along the optical axis during variation of magnification, and a fourth lens unit, the fourth lens unit being stationary during variation of magnification, wherein, when the zoom lens vibrates, the third lens unit is made to make a movement having at least a vector component which is perpendicular to the optical axis to compensate for shaking of an image.

Zoom lens having vibration compensating function

A photographic lens system having an image stabilizing function is disclosed, comprising, from front to rear, a first lens unit of positive refractive power and a second lens unit of negative refractive power, the second lens unit having a front lens sub-unit of negative refractive power and a rear lens sub-unit of positive refractive power, the first lens unit being moved axially to effect focusing, the front lens sub-unit being moved in directions perpendicular to an optical axis to correct the shake of an image at the focal plane, and the following conditions being satisfied:

Photographic lens having image stabilizing function

A compact light projection system for auto-focus detection apparatus in which a stripe pattern is projected onto an object in a wide range. The light projection device comprises a chart having a pattern to be detected, an illuminating device for illuminating the chart, and a lens assembly for projecting the pattern. The lens assembly includes a first lens having an optic axis and second and third lenses having optic axes respectively inclining at a predetermined angle to the optic axis of the first lens.

Growing community of inventors

Yokohama, Japan

Shingo Hayakawa