Patent ID: 7755741
Filing Date: 2010-07-13
Classification: G03F

Abstract:
1. A substrate exposure apparatus comprising: an exposure light source; a beam forming device that forms light emitted from the exposure light source into highly directional light beams; a first optical system that guides the directional beams to an integrator; the integrator consisting of J and K rod lenses arrayed in a x-direction and in a v-direction, respectively, whereas each of the rod lenses measures dx in the x-direction and dy in the y-direction, and the length and refractive index of each rod lens are represented by L and n, respectively, and the angles of divergence in the x-direction and in the y-direction of the beam emerging from the rod lens are represented by θx and θy, respectively; a second optical system that irradiates the widths Wx and Wy of a two-dimensional optical space modulator with light emerging from the integrator, whereas the focal distances in the x- and y-directions of the second optical system are fx and fy; the two-dimensional optical space modulator whose dimensions in the x- and y-direction are Hx and Hy, respectively; a projection optical system, having a micro-lens unit including a micro-lens array and a pinhole array, that projects the light reflected or transmitted by the two-dimensional optical space modulator onto an exposure substrate that is exposed to light; and a stage that is mounted with and scans the exposure substrate in at least one direction, wherein setting Wx=Hx, Wy=Hy, the parameters Wx, Wy, dx, dy, J, K, fx, fy obey the following equations: