Abstract: An exemplary optical device for stereoscopic imaging that includes an aperture unit. The aperture unite may be configured to adjust an aperture value of first and second aperture portions while maintaining a binocular disparity between a first alignment location of the first aperture portion and a second alignment location of the second aperture portion.

Abstract: A rear conversion lens includes: a chassis including two opposite ends, the chassis including light-transmitting holes on the ends, respectively; a first coupler configured to detachably couple one of the ends of the chassis with an image field side of an image-pickup lens of a three-chip camera including three first image sensors, the image-pickup lens being designed based on an assumption that the image-pickup lens is to be used with a color-separation prism in combination; a second coupler configured to detachably couple the other end of the chassis with a single-chip color camera including a second image sensor, the second image sensor including an image field larger than an image field of the first image sensors of the three-chip camera; and an optical system including a first lens group, a second lens group, and a third lens group arranged in the chassis in this order from an object side, the first lens group having a negative compound focal length, the second lens group being configured to correct a sp

Abstract: A finder optical system includes, in the order from a display device side to an eye point side, a first lens group to increase a light beam height of a light beam bundle incident from a display device side and to emit the light beam bundle to the eye point side, and a second lens group having an image formation action.

Abstract: A rear conversion lens includes: a chassis including two opposite ends, the chassis including light-transmitting holes on the ends, respectively; a first coupler configured to detachably couple one of the ends of the chassis with an image field side of an image-pickup lens of a three-chip camera including three first image sensors, the image-pickup lens being designed based on an assumption that the image-pickup lens is to be used with a color-separation prism in combination; a second coupler configured to detachably couple the other end of the chassis with a single-chip color camera including a second image sensor, the second image sensor including an image field larger than an image field of the first image sensors of the three-chip camera; and an optical system including a first lens group, a second lens group, and a third lens group arranged in the chassis in this order from an object side, the first lens group having a negative compound focal length, the second lens group being configured to correct a sp

Abstract: A finder optical system includes, in the order from a display device side to an eye point side, a first lens group to increase a light beam height of a light beam bundle incident from a display device side and to emit the light beam bundle to the eye point side, and a second lens group having an image formation action.

Abstract: An exemplary optical device for stereoscopic imaging that includes an aperture unit. The aperture unite may be configured to adjust an aperture value of first and second aperture portions while maintaining a binocular disparity between a first alignment location of the first aperture portion and a second alignment location of the second aperture portion.

Abstract: An imaging apparatus includes an imaging element, a communication unit, an automatic adjustment mechanism and a camera controller. The communication unit receives lens-side information from a lens apparatus. The automatic adjustment mechanism adjusts a position of the imaging element. The camera controller controls the position of the imaging element, which is adjusted by the automatic adjustment mechanism according to a spherical aberration variation, based on the lens-side information.

Abstract: There is provided an imaging apparatus including an imaging element, a communication unit that receives lens-side information from a lens apparatus, an automatic adjustment mechanism that adjusts a position of the imaging element, and a camera controller that controls the position of the imaging element, which is adjusted by the automatic adjustment mechanism according to a spherical aberration variation, based on the lens-side information.

Abstract: A two-lens device includes two lens portions that are disposed so as to be laterally aligned, a lens case that supports the two lens portions in a state where a convergence point can be adjusted in order to image a subject as stereoscopic images by the two lens portions, and a filter installation portion at which a single circular optical filter covering the entire surface of the subject side of the two lens portions is installed so as to be attachable and detachable through thread connection on the subject side of the two lens portions of the lens case.

Abstract: It is intended to carry out a focusing operation suitably in each case of automatic focusing and manual focus adjustment. Therefore, in the present invention, there is provided a first focus ring 1 movable between a first position and a second position on an optical axis. Further, a first rotation-angle detection unit detecting a rotation amount of the first focus ring 1 at the first position, a second focus ring 2 coupled to the first focus ring 1 when the first focus ring 1 is at the first position, and a second rotation-angle detection unit detecting a rotation amount of the second focus ring 2 are provided. When the first focus ring 1 is at the first position, a focus lens is driven based on the rotation amount detected by the first rotation-angle detection unit, and when the first focus ring 1 is at the second position, the focus lens is driven based on the rotation amount detected by the second rotation-angle detection unit.

Abstract: An image capture apparatus is provided. The image capture apparatus includes a prism that separates light incident through a lens into at least two color components of light to be output and an image capture device that converts light separated by and output from the prism into a captured image signal. The image capture apparatus includes a fixing plate attached to the image capture device mounted on a substrate. In addition, the image capture apparatus includes a plurality of fixing members for fixing an unattached surface of the fixing plate, which is unattached to the image capture device, on a side surface of the prism through an adhesive.

Abstract: It is intended to carry out a focusing operation suitably in each case of automatic focusing and manual focus adjustment. Therefore, in the present invention, there is provided a first focus ring 1 movable between a first position and a second position on an optical axis. Further, a first rotation-angle detection unit detecting a rotation amount of the first focus ring 1 at the first position, a second focus ring 2 coupled to the first focus ring 1 when the first focus ring 1 is at the first position, and a second rotation-angle detection unit detecting a rotation amount of the second focus ring 2 are provided. When the first focus ring 1 is at the first position, a focus lens is driven based on the rotation amount detected by the first rotation-angle detection unit, and when the first focus ring 1 is at the second position, the focus lens is driven based on the rotation amount detected by the second rotation-angle detection unit.

Abstract: An image capture apparatus is provided. The image capture apparatus includes a prism that separates light incident through a lens into at least two color components of light to be output and an image capture device that converts light separated by and output from the prism into a captured image signal. The image capture apparatus includes a fixing plate attached to the image capture device mounted on a substrate. In addition, the image capture apparatus includes a plurality of fixing members for fixing an unattached surface of the fixing plate, which is unattached to the image capture device, on a side surface of the prism through an adhesive.