17.The light guiding plate according to claim 16, wherein:the substrate is made of a material including a polymer compound;the mesh-like grating pattern is a concave-convex pattern; andan aspect ratio of the concave-convex pattern is 1 or less. 18.The light guiding plate according to claim...
Flange (Polygon mirror) Alminum Alloy 68 0.36 2.5 2,700 Rotor Magnet Rare-earth Bond Magnet 10-100 0.30 2.6 5,300In addition, the simulation results shown in FIGS. 4 to 6 are obtained when the outer diameter of the rotor magnet 103 is about 18 mm, and the inner diameter thereof is ...
the wavelength is changed for a value determined by the average value of the change amount f1 (ΔP), f2 (ΔP), . . . of the wavelength obtained for each glass material. The reflection components, such as a concave mirror, need not be considered since the optical path of the illuminatio...
luminance of a projected image is insufficient. When the photonic crystal of Patent Document 1 is used without change on a plastic substrate, the aspect ratio of the concave-convex pattern transferred to the surface of the light guiding plate is large, and formation is difficult using plastic mo...
8. The real image projection system of claim 1, comprising a curved mirror that has two different surfaces of revolution, one of said two different surfaces of revolution being on a concave surface of said mirror, and another of said two different surfaces of revolution being on a convex surf...
mirror, which in this embodiment is concave, but may be convex. The mirror10converts a 360 degree panoramic image captured across a vertical field of view126of at least 90 degrees into a disc-shaped image captu
(for example 30 hz), and the changing shape of the mylar forms a variable convex or concave mirror which images a point of light at varying depths. The light source is a spot on the face of a cathode-ray tube, deflected in synchronism with this "varifocal" mirror. Along with the ...
centered at a principal point H of the microlens51a, as a concave curved mirror having a same spherical shape. Such curved mirrors can be formed by forming the surface of an insulating layer as spherical faces by etching or the like and producing an aluminum layer on the spherical faces as...
6. A virtual display system as in claim 5, wherein said first beam splitter is positioned to reflect light from said concave spherical mirror downwardly, and said second beam splitter is positioned to receive light reflected by said first beam splitter and said object is positioned to receive ...
Also, since convergent light (down to intermediate image formation) or divergent light (after the intermediate image formation) travels inside the optical waveguide 403, a pencil of rays not diffracted by the first reflection and diffraction but totally reflected again in the plane of the optical ...