An endoscopic system includes a left optical system having a first focal position, a right optical system having a second focal position that is different from the first focal position. An image capturing device generates a first image and a second image respectively from images of a subject that are obtained by the left optical system and the right optical system. A display device displays the first image or the second image. A proper image determiner determines the magnitude relationship between the position of the subject in a predetermined area displayed on the display device and at least one threshold value Th is established between the first focal position and the second focal position. A video signal processor switches to the first image or the second image depending on a determined result from the proper image determiner and displays the image on the display device.

Non-telecentric in image space optical objective dimensioned to operate as part of intravascular endoscope probe and including first and second groups of lens elements (separated by an aperture stop) each of which has negative optical power. The first group of lens elements includes a first meniscus lens with a positive dioptric power and a first optical doublet. The second group of lens elements includes a sequence of second and third optical doublets and a second meniscus lens that follows the third optical doublet. At least one of the first and second groups of lens elements includes an aspheric refractive surface, thereby reducing distortion down to under 0.25% for field angles up to at least 40 degrees.

Imaging systems and methods involving a videoscope including cameras; a filter feature in optical communication with the cameras, the filter feature configured to independently filter or tandemly filter light from each camera; an independently adjustable aperture in optical communication with the filter feature, the independently adjustable aperture configured to limit transmission of filtered light; independently adjustable zoom features in optical communication with the independently adjustable aperture, the independently adjustable zoom features including corresponding independently adjustable zoom channels, and each independently adjustable zoom feature configured to independently zoom independently limited filtered light; a prism in optical communication with the independently adjustable zoom channels, the prism configured to redirect independently zoomed, independently limited, filtered light; and a shared focus feature in optical communication with the prism, the shared focus feature comprising a shared focus channel, and the shared focus feature configured to focus redirected, independently zoomed, independently limited, filtered light.

A stereoscopic vision optical system includes a first lens group having a negative refractive power, disposed nearest to an object, a second lens group having a positive refractive power, and a rear-side lens group having a positive refractive power. The rear-side lens group includes a first rear group and a second rear group. The optical axis of the first lens group, an optical axis of the first rear group, and an optical axis of the second rear group is positioned on the same plane. The optical axis of the first lens group is positioned between the optical axis of the first rear group and the optical axis of the second rear group, and the following conditional expression (1) is satisfied:
0.08≤((−L/2)×(f1/f2))×(1/WD)≤0.25  (1).

An image sensor package includes a first substrate, an image sensor, a second substrate, a light-emitting element, and a first encapsulant. The image sensor is disposed on and electrically connected with the first substrate. The second substrate is disposed on and electrically connected with the first substrate, wherein the second substrate includes an accommodating portion and the image sensor protrudes from the second substrate via the accommodating portion. The light-emitting element is disposed on the second substrate and close to the image sensor, and is electrically connected to the second substrate. The first encapsulant is filled in a space between the image sensor and the light-emitting element. The abovementioned image sensor package can achieve miniaturization and provide better illumination. An endoscope including the abovementioned image sensor package is also disclosed.

An imaging device includes an image sensor. The image sensor includes: a light receiving unit having pixels configured to receive light and generate an imaging signal according to an amount of the received light; a color filter having a filter unit disposed corresponding to the pixels, the filter unit including first band filters for passing light of a wavelength band of a primary color or a complementary color and including at least one second band filter for passing narrow-band light whose wavelength band is narrower than the wavelength band of the light passing through each of the first band filters; and an output unit configured to output the imaging signal under conditions that an amount of light incident on a second pixel corresponding to the at least one second band filter is greater than an amount of light incident on each of first pixels corresponding to the first band filters.

A medical imaging system for illuminating tissue samples using three-dimensional structured illumination microscopy is port-based surgery is provided. The system comprises: an image sensor; a mirror device; zoom optics; a light modulator; a processor; and collimating optics configured to convey one or more images from the modulator to the mirror, the mirror configured to convey the images to the zoom optics, the zoom optics configured: to convey the image(s) from the mirror to a tissue sample; and convey one or more resulting images, formed by the image(s) illuminating the sample, back to the mirror, which conveys the resulting image(s) from the zoom optics to the image sensor, and, the processor configured to control the modulator to form the image(s), the image(s) including at least one pattern selected to interact with the sample to generate different depth information in each of resulting image(s).

There is provided an endoscope apparatus which enables to observe a three-dimensional image which is easy to view even in close observation.

An endoscope apparatus, comprises: optical systems which form images for a left-eye and a right-eye respectively; an image pickup element which captures the two images and generates pictorial images for the left eye and the right eye; and at least one image processing unit which carries out processing of a pictorial image signal from the image pickup element and creates a stereoscopic image that can be displayed on a monitor, wherein the endoscope apparatus satisfies the following conditional expression (1)

0.3<CP×(1+Dt1)<7, and CP≦10   (1) where, CP denotes a distance (mm) from a surface nearest to object of the optical system up to an object, when an amount of left and right shift of the left-eye pictorial image and the right-eye pictorial image becomes 0, at a center of a monitor screen, and Dt1 denotes a distortion in length at the maximum image height.

An imaging system includes: an optical unit; an imaging device configured to capture an optical image imaged by the optical unit; and a processing device configured to perform image processing on image data transmitted from the imaging device. The processing device includes: a data acquisition unit configured to acquire view angle correction data from a first storage unit; and a correction unit configured to correct at least one of first image data and second image data based on the view angle correction data acquired by the data acquisition unit such that a view angle of a first image corresponding to the first image data and a view angle of a second image corresponding to the second image data match each other, and a size of the first image and a size of the second image match each other.

An endoscope includes two or more imaging modules having a lens barrel containing an optical system, an image sensor, and a sensor holding member that relatively fixes the lens barrel and the image sensor, a sub-frame that relatively fixes each of the two or more imaging modules, and an outer shell portion that accommodates and fixes the sub-frame and the two or more imaging modules.