摘要:
A self-conscious type eye examining apparatus is provided with a Stokes' cross cylinder in a view field window, a spherical lens group having a plurality of spherical lenses selectively disposed in the optical path of the cross cylinder, a first electric rotating device coupled to the cross cylinder to rotate the cross cylinder independently, a second electric rotating device for inserting a predetermined lens of the spherical lens group into the view field window, and a control device for controlling the rotations of the first and second electric rotating devices in a predetermined relation.
摘要:
A developing device for imparting triboelectrically charged developer to a surface to be developed includes a developer holding member disposed with a minute gap with respect to a latent image bearing member for holding and moving developer to a development station, a developer supply for supplying developer to the surface of the developer holding member, and a developer removing blade in contact with the developer holding member for removing the developer used for the development and remaining on the developer holding member, the blade having developer passage openings adjacent the portion which contacts the developer holding member to again impart removed developer to the developer holding means at a position downstream of the development station with respect to the movement of the developer and which is before the supply of developer is terminated at the developer supply.
摘要:
A device in which triboelectric charge is imparted to developer and the developer is provided to a latent image includes a developer holding member disposed with a minute gap with respect to a latent image bearing member, a doctor blade for controlling the thickness of a developer layer on the developer holding member, a developer supply, a detachable scatter preventing cover to prevent scattering of developer, the cover being positioned upstream of the developer supply and downstream of a developing station, and a member disposed on said cover for removing the developer remaining on the developer holding member, whereby development may be effected with fresh developer supplied for each cycle of development.
摘要:
A cross key is mounted on a headphone. When a support arm and a connection section are pivoted 180 degrees from the (a)-state to change the position of wearing the headphone between left and right, a head-mounted display is set for use by the right eye, and this turns the cross key upside down. Correspondingly, a function allocated to the upper key is allocated to the lower key and a function allocated to the lower key is allocated to the upper key to obtain the (b)-state. In the (b)-state, the functions are changed such that the function allocated to the upper key is allocated to the upper key and the function allocated to the lower key is allocated to the lower key. A cross key does not require any change in key functions and left as is.
摘要:
Inclination of an image display unit is prevented at the time of using a wearable display unit in which the image display unit can move between a projection position where the image display unit comes in front of a user's eye and a retracted position where the image display unit has been retracted from the front of the user's eye. A display support member 27 is prevented from rotating in relation to a display support member housing part 31 in a direction included in a plane perpendicular to the longitudinal direction of the display support member 27, even in a state that the display support member can move. To that end, grooves 28a, 28b extending in the longitudinal direction are formed in the display support member 27, while guide rollers 34a, 34a in contact with these grooves are provided within the display support member housing part 31.
摘要:
The head mounted display of the present invention has a display part for displaying images to the wearer, a supporting part which supports the display part, which is fed out into a position in front of as eye from a position that is not located in front of the face, and which is moved from this position in front of as eye into this position that is not located in front of the face, and a mounting part which holds this supporting part, and which is mounted on the wearer in a position that is not located in front of the face, and is constructed so that the supporting part can move past the side of the head along the contour of the head. As a result, a display device is produced which is relatively free of unsightliness with respect to the wearer.
摘要:
In a visual training device and a visual training method, different targets are displayed for right and left eyes, respectively, and refractivities of the right and left eyes are measured. Based on the measured refractivities of the eyes, positions of the targets displayed for the right and left eyes are moved in the directions of the respective optical axes. At the same time, the targets are moved so that the visual axes of the right and left eyes incline outward toward the end. The directions of the visual axes of the right and left eyes incline outward toward the end, so that it is possible to relax the strain of musculus ciliaris and relieve visual fatigue through short, effective training.
摘要:
The head mounted display of the present invention has a display part for displaying images to the wearer, a supporting part which supports the display part, which is fed out into a position in front of as eye from a position that is not located in front of the face, and which is moved from this position in front of as eye into this position that is not located in front of the face, and a mounting part which holds this supporting part, and which is mounted on the wearer in a position that is not located in front of the face, and is constructed so that the supporting part can move past the side of the head along the contour of the head. As a result, a display device is produced which is relatively free of unsightliness with respect to the wearer.
摘要:
An ophthalmologic curvature measuring device measures the shape of a central portion and the shape of a peripheral portion of a curved surface such as a cornea of the eye or contact lenses. The measuring device has a small size and is capable of being hand held during measurement. A plurality of light beams are first projected onto the cornea and corneal periphery of the eye. A first projection unit then projects a first mark onto a first region of the subject eye while a second projection unit projects a pair of second marks onto a second region of the subject eye. An objective lens transmits reflected images of the first and the second marks to a measurement unit which measures the second marks at first and second timings. A displacement detecting unit then detects relative angular displacement of the measured first and second positions of the second marks about an optical axis and a calculation unit calculates the second region of the subject curved surface from the relative angular displacement detected by the displacement detecting unit.
摘要:
An eye refractive power measuring apparatus is provided with a measuring device opposed to eyes to be examined for measuring the eye refractive power of the eyes to be examined, an eye-to-be-examined detecting device for detecting whether the eye to which the measuring device is opposed is one or the other of the eyes to be examined, a designating switch for designating the direction in which the measuring device is opposed to the eyes to be examined, and a judging whether the eye to be examined is device for judging a right eye or a left eye based on the result of the detection by the eye-to-be-examined detecting device and the direction designated by the designating switch.