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Focal length formula mistake (Landscape Lens Exercise) in Optics Reference

Question

There appears to be an error in the focal length formula for the Landscape Lens Exercise in the OSLO 6.1 Optics Reference. Is this the case?

Synopsis

Focal length formula mistake (Landscape Lens Exercise) in Optics Reference

Symptoms

The first sentence at the top of page 33 (42) in the hardcopy version (electronic version) of the OSLO 6.1 Optics Reference reads: "...since the focal length is -PU*EBR (EBR is the entrace beam radius)..."

Solution

This sentence should read: "...since the focal length is -EBR/PU (EBR is the entrance beam radius)..." This will be corrected in the next update of the Optics Reference manual.