Abstract: A photomask inspection apparatus includes a stage which supports an inspection substrate, a first optical system having a first numerical aperture and disposed at one side of the inspection substrate, a second optical system having a second numerical aperture, spaced apart from the first optical system, and disposed at the one side of the inspection substrate, an imaging optical system including a first objective lens aligned with the first optical system with the inspection substrate disposed therebetween, a second objective lens aligned with the second optical system with the inspection substrate disposed therebetween, and disposed at another side of the inspection substrate, which is opposite to the one side of the inspection substrate, and a camera which captures an image passed through the imaging optical system. The first numerical aperture is greater than the second numerical aperture.

Abstract: A mask inspection method including the steps of obtaining an image of a mask including a first region having a plurality of first openings, and a second region having a plurality of second openings, sectioning the image into a first partial image corresponding to the first region and a second partial image corresponding to the second region, respectively, inspecting the first region of the mask based on the first partial image, and inspecting the second region of the mask based on the second partial image.

Abstract: Disclosed is a portable video magnifying apparatus. The video magnifying apparatus of the present invention comprises a main frame; a short distance image detecting part which is pivotably disposed at the main frame so as to allow proximity photographing with respect to a subject on a right under surface of the short distance image detecting part or therearound; a long distance image detecting part which is provided with a long distance photographing lens for photographing a long distance subject and which is disposed at the main frame; and a display part which outputs one out of the short distance image, the long distance image and an image input through an external portion, which is selected by a user. Therefore, it is possible to help the weak-sighted or aged person.