Abstract: Mirror, in particular for the utilization of solar rays, which comprises a core (1), on one side of which is disposed a reflective layer (4) and on the other side of which is disposed a protective covering (2). A separate protective covering (3) is applied to the core (1) between the reflective layer (4) and the core (1). The reflective layer (4) is a foil which is applied to the latter protective covering (3).

Abstract: A combination sun visor and rear view mirror assembly includes a mirror, a mirror housing, and a bracket for attaching the housing to a vehicle. A sun visor panel is pivotally attached to the bracket and is rotatable about the mirror. The visor may be oriented above the mirror, below the mirror, or may be cover the mirror to shield the driver of the vehicle from a direct reflection of the sun. The visor is preferably formed from a tinted, translucent material.

Abstract: An optical device for permitting a person to secure an improved rear view mirror to a protective headgear which can be adjusted to variable operative positions spaced in front of his eye.

Abstract: An information reading device which comprises a semiconductor laser source which emits a semiconductor laser beam and a first condenser lens for converging the laser beam to form an irradiation beam. A beam shaping optical system is disposed on the optical path of the laser beam to form a predetermined beam section shape of the irradiation beam which is converged by the first condenser lens. A hologram disk is used for deflecting the irradiation beam. The information reading device further comprises an optical path separation system. The optical path of the irradiation beam is separated from that of the reflection beam reflected from the scanning surface irradiated by the irradiation beam. A second condenser lens is arranged from converging the reflection beam separated from the irradiation beam by the optical path separation means. And an optical sensor is arranged for detecting the reflection beam converged by the second condenser lens.

Abstract: An image forming optical system provided with an image forming lens forming an object, as an image, having large spectrum components in a specific spatial frequency on an image receiving device performing discretely spatial sampling and an optical low-pass filter that a response is reduced to zero in the specific spatial frequency or in a frequency in the vicinity thereof, in order to reduce large spatial frequency spectrum components in the image of the object which cause a false signal and moire and to thereby make it possible to photograph and observe a clear object image.

Abstract: A method of adjusting a light source position in a convergence device is employed for a convergence device having a spheroidal mirror and a discharge tube disposed within the spheroidal mirror, such that the vicinity of a tip of a cathode of the discharge tube is generally aligned with a first focal point of the spheroidal mirror whereby light from the discharge tube converges at a second focal point, and wherein two peep holes are provided in the spheroidal mirror at locations corresponding to a plane surface including the first focal point and perpendicular to an optical axis of the spheroidal mirror, wherein in said peep holes are offset by 90 degrees with respect to one another in the plane surface.

Abstract: In a mirror-angle adjusting arrangement, at least one adjusting member is arranged between a surface formed on a mirror support structure and a mirror. The adjusting member is reciprocatively movable along the surface while contacting mirror in such a fashion that the angle of the mirror with respect to the surface varies upon movement of the adjusting member.

Abstract: A magnifying binocular opthalmoscope comprising a mirror system and a telescopic lens system. Light travels from the source of an image to the mirror system and is reflected thereby to travel through the telescopic lens system. The telescopic lens system comprises two series of lenses to provide the operator of the magnifying binocular opthalmoscope with binocular vision. The operator is able to view a magnification of the image of the source through the eye pieces of the two series of lenses.