Patent ID: 7382462

Claim:
Device for measuring the reflection factor comprising: at least one light emitting part from which light with a certain wavelength and directional capacity is emitted to irradiate a surface of a measurement area of a microchip which is to be measured with emitted light, and at least one light receiving part which receives light reflected from the measurement area for determination of the reflection factor of the measurement area, wherein a transparent component is located on the measurement area of the microchip, wherein the light emitting part is located directly above the measurement area, wherein the surface irradiated by the light emitting part lies within the measurement area, and wherein the light receiving part is located in an angular region θ (in °) which is located between angles θ min and θ max , θ min and θ max (in °) being angles which the reflection light forms with respect to a normal on the edge of the irradiated surface of the area to be measured in a virtual plane which contains the emission center of the light emitting part and which is perpendicular to the microchip, wherein θ min is ½ α and θ max corresponds to sin −1 (1/n), where α (°) is the scattering angle of the light radiated by the light emitting part which is located directly above the area to be measured, and wherein n is the index of refraction of the transparent component, and in which the relationship (½)α≦θ≦sin −1 (1/n) is satisfied.