Abstract: There are provided: a half mirror provided in a finder device and transmitting an incident light image from a subject side and projecting the incident light image onto a photographer side finder view window side; a display panel provided in a position facing the half mirror in the finder device and displaying a taken image of the subject taken by an imaging device with given brightness so that the displayed taken image (EVF image) is reflected by the half mirror so as to be projected onto the photographer side finder view window side; and a display control portion changing brightness of the display image (EVF image) displayed on the display panel so that the brightness of the display image (EVF image) increases gradually to given brightness or the brightness of the display image (EVF image) further increases gradually from the given brightness.

Abstract: For controlling exposure in a camera, first and second brightness levels of first and second areas of a captured image are determined. First and second weight values for the first and second brightness levels are determined with an increase of the first weight value for a higher difference between the first and second brightness levels. Exposure control data is generated from the first and second weight values and the first and second brightness levels.

Abstract: A transparent display comprising first and second transparent substrates first and second transparent electrodes, a polymer dispersed liquid crystal layer, and first and second light sources, is provided. The first and second transparent electrodes are mounted on the inside surfaces of the first and second transparent substrates. The inside surfaces of the first and second transparent substrates face each other. The polymer dispersed liquid crystal layer fills the gap between the first and second transparent electrodes. The polymer dispersed liquid crystal layer comprises a polymer material and a liquid crystal. The first and second light sources emit first and second light in predetermined directions, respectively. The predetermined directions are decided so that the first and second light are reflected at an outside surface.

Abstract: A liquid crystal display panel in which a signal electrode provided on a first substrate (1), a counter electrode provided on a second substrate (2), and a liquid crystal layer (18) between the substrates, and which carries out display without polarizers by changing the degree of transmission and scattering by means of a voltage applied to a pixel part. A light source part (27) is provided along the periphery of both substrates (1, 2), and a polarization separating device (30) is provided between the liquid crystal panel and the light source part (27).

Abstract: An image display apparatus has a main display area in which a plurality of pixels are arranged horizontally and vertically in an array condition, and at least one sub display area in which a plurality of pixels are arranged horizontally and vertically in an array condition, provided separately from and outside the main display area. In the image display apparatus, two types of lines are arranged in a matrix manner horizontally and vertically against the main display area and the sub display area to drive the plurality of pixels, and driving units for applying driving signals to the lines arranged in the matrix manner are also provided.

Abstract: A photographing unit for a microscope has a photometric detector to measure brightness of light from a sample and includes a changing member which changes a brightness of light toward an observation system and a control unit which controls the light based on a detection output of the photometric detector. In addition, the changing member can be controlled based on the presence of an observer. A shielding member can be provided that automatically shields an optical path of the observation system. An illumination system for an index on a reticle can be provided so that the illumination of the reticle can be performed or extinguished at desired times. Additionally, the color of light with which the index is illuminated may be made distinguishable from the color of light from a sample, and the contrast of the index to the sample can be controlled.

Abstract: In a view finder having an objective lens, an indicator is provided in the vicinity of an image forming position of the objective lens. The indicator includes a liquid crystal cell having a pair of spaced first and second glass substrates with transparent electrodes. A transparent macromolecular substance having a liquid crystal dispersed therein is enclosed in the space between the first and second glass substrates. An eyepiece is provided through which an image formed by the objective lens can be viewed. Light sources are provided along side surfaces of the indicator to emit and make light incident upon the indicator.

Abstract: The invention relates to an apparatus with an illumination device for illuminating an eyeball; a light-receiving device having a plurality of photoelectric changing elements for changing reflected light from the eyeball; a storage device for storing a plurality of Purkinje image candidates among the signals obtained by receiving light with said light-receiving device; a selection device for selecting suitable Purkinje image candidates as the Purkinje image from the plurality of Purkinje image candidates; and a detection device for detecting the state of the visual axis on the basis of the Purkinje image selected by the selection device.