Dermatological device having a zoom lens system

A handheld dermatological device, comprising

• a optical mask adapted to receive a radiation beam,
• a zoom lens system coupled to said optical mask to generate an image of the optical mask in the skin.

A handheld dermatological device, comprising

• a port for receiving radiation from a radiation source,
• a holder in which at least two optical masks can be disposed, said holder being adapted for interchangeably positioning one of said phases mask in a path of the radiation, and
• a zoom lens system optically coupled to said optical mask so as to generate an image thereof in the skin.

A handheld dermatological device, comprising

• a handheld housing,
• a radiation transmissive window coupled to said housing, said window being adapted for receiving radiation through a surface thereof and applying the radiation to the skin via an opposed surface,
• a prism optically coupled to said window to facilitate viewing of a skin portion to which radiation is applied.

A handheld dermatological device, comprising

• a handheld housing,
• a radiation transmissive window coupled to said housing, said window having a surface adapted for contact with the skin,
• a flexible indicator coupled to said surface to cause a transient impression on the skin so as to delineate a surface boundary of a skin portion to which radiation is applied.