Patent ID: 7560273

Claim:
A biological testing device for samples, comprising: a heated platen assembly, the assembly comprising: a heated platen defining a plurality of optical openings, the optical openings configured to permit radiation to pass through the heated platen, the heated platen having a first side configured to face away from a plurality of sample wells and a second side configured to face toward the plurality of sample wells, wherein the heated platen is connected to a resistive element; a light transmissive slip cover configured to cover at least one of the plurality of optical openings on the first side of the heated platen; and a frame member over the plurality of optical openings, wherein the frame member overlaps with the slip cover and does not obscure any of the optical openings, and wherein the frame member is attached to the heated platen via holes in the frame member and the heated platen; wherein the heated platen comprises a recessed portion surrounding and retaining the cover slip and the slip cover is adhered to the heated platen; and an optical detection device, the optical detection device comprising a real-time detector of nucleic acid amplification in the samples during thermal cycling; and a light source, wherein both the radiation passing from the light source to the sample wells and from the sample wells to the optical detection device pass through the same optical opening.