Abstract: An airbag door connecting structure of a passenger seat of a vehicle may include a crash pad formed with interior finishing material of a dash board extending over a front surface of a passenger seat; a housing disposed to a lower portion of the crash pad, wherein a space is defined between the housing and the crash pad in which a passenger airbag (PAB) is installed; a chute coupled to the crash pad by vibration welding outside the housing and couples the housing to the crash pad; and an airbag door disposed in the chute and covering the space of the housing, the airbag door having a hinge portion which is bent inwards so as to elastically rotate about a coupling portion of the hinge portion outwards by the passenger airbag in a crash accident of the vehicle, wherein the coupling portion is coupled to the housing and to the chute.

Abstract: A compact binoculars utilizing roof mirrors is disclosed. Compactness of the binoculars is achieved by maintaining the optical axis in the same plane as the axes of movement of the focusing apparatus and eyewidth adjustment apparatus. A method of manufacturing the roof mirror is also disclosed. The method allows produces and inexpensive and precisely aligned roof mirror for use in the compact binoculars.

Abstract: Compact dual focal length cameras are disclosed having wide angle and telephoto modes of operation. The ratio of telephoto to wide angle ratios is at least 3 to 1, but is typically higher so that the cameras can be used in conjunction with binoculars to take telephoto pictures that give the same visual appearance as when the same scenes are observed through binoculars. Compactness and increased focal length are achieved via four mirror arrangements one preferred embodiment of which wraps around the camera film plane and uses a single constant angular velocity shutter for providing both wide angle and telephoto exposure times. Compact, single-use, medium telephoto cameras are also disclosed.

Abstract: Compact dual focal length cameras are disclosed having wide angle and telephoto modes of operation. The ratio of telephoto to wide angle ratios is at least 3 to 1, but is typically higher so that the cameras can be used in conjunction with binoculars to take telephoto pictures that give the same visual appearance as when the same scenes are observed through binoculars. Compactness and increased focal length are achieved via four mirror arrangements one preferred embodiment of which wraps around the camera film plane and uses a single constant angular velocity shutter for providing both wide angle and telephoto exposure times. Compact, single-use, medium telephoto cameras are also disclosed.

Abstract: Light weight, low-cost, compact binoculars intended to be sold at retail locations and popular attractions, such as stadiums, arenas, tourist destinations, and theme parks. The binoculars utilize high reflectance mirrors to fold light and lengthen distance between the objective lens and the field lens to correct the orientation of the image. The binoculars are very light because they are made with mirrors and lightweight, injection molded acrylic plastic lenses. They are pocket sized and compact, yet adjustable for individual interocular distance. The field view is rectangular in format and the IP adjustment is by way of sliding action between nested housings made possible by virtue of the fact that the inversion and reversion functions in its separate housings are in opposite order.

Abstract: Pseudoscopic, dual-path optical systems employing plane mirror arrangements for cross coupling the optical paths to reverse the left and right perspectives of object space are provided. Advantageously, the cross coupled path arrangements permit the systems to be manufactured inexpensively because low-cost reflective components can be used and assembled with alignment requirements that are significantly relaxed compared with customary requirements found in uncoupled systems utilizing high-cost prisms or mirror arrangements for similar purposes.

Abstract: A low-cost, dual-view, immersible periscope that is particularly suitable for use as a toy or learning tool in environments such as bath tubs, sinks, tidal pools, outdoor wadding pools, or other aquatic areas where children play and explore. The periscope has an upper viewing compartment that operates in air and a lower compartment that floods with water as the periscope is immersed and contains the entrance aperture. The upper and lower compartments are separated from one another with a transparent window, which the upper compartment surrounds isolate its air space from surrounding water to provide a completely still image of activity taking place beneath the surface even though it may be turbulent with wave action. Additional enhancements include magnification, underwater accessory lighting, sound effects, torpedo tubes, and means for placing transparencies over the entrance aperture to integrate images with underwater action.

Abstract: Pseudoscopic, dual-path optical systems employing plane mirror arrangements for cross coupling the optical paths to reverse the left and right perspectives of object space are provided. Advantageously, the cross coupled path arrangements permit the systems to be manufactured inexpensively because low-cost reflective components can be used and assembled with alignment requirements that are significantly relaxed compared with customary requirements found in uncoupled systems utilizing high-cost prisms or mirror arrangements for similar purposes.