both the hinge material and the reinforcing material it is preferable that the metal be patterned e g removed in the hinge area prior to depositing and patterning the hinge material fig3 a to 3 e illustrate the same process taken along a different cross section cross section 3 u2014 3 in fig4 and show the optional block layer 12 deposited on the light transmissive substrate 10 followed by the sacrificial layer 14 layers 18 20 and the metal layer 22 the cross sections in fig1 a to 1 e and 3 a to 3 e are taken along substantially square mirrors in fig2 and 4 respectively however the mirrors need not be square but can have other shapes that may decrease diffraction and increase the contrast ratio such mirrors are disclosed in u s provisional patent application 60 229 246 to ilkov et al the subject matter of which is incorporated herein by reference also the mirror hinges can be torsion hinges as illustrated in this provisional application it should also be noted that materials and method mentioned above are examples only as many other method and materials could be used for example the sandia summit process using polysilicon for structural layers or the cronos mumps process also polysilicon for structural.