Sans Mirror  

The Nikon 1 cameras use CX mount lenses. CX mount lenses have a 2.7x angle of view crop compared to 35mm and FX lenses. CX mount lenses can only be used on Nikon 1 cameras—they do not work with Nikon's DSLR cameras (DX or FX). 

At the introduction of the cameras, four such lenses were announced (10mm f/2.8, 10-30mm f/3.5-5.6, 10-100mm f/4.5-5.6, and 30-110mm f/3.8-5.6). Since then, we've gotten five additional lenses (11-27.5mm f/3.5-5.6, 18.5mm f/1.8, 32mm f/1.2, 6.7-13mm f/3.5-5.6, and a 10-100mm f/4-5.6), and AW variations of two. Current Nikon 1 lenses:

Nikon’s Web Site for CX Lenses

While Nikon never disclosed a road map for future Nikon 1 lenses, Nikon filed numerous patents on CX mount lenses. Unfortunately, we'll probably never see these lenses, as Nikon has discontinued Nikon 1 products: 

• Primes: 3mm f/2.8, 7.5mm f/2.8, 9mm f/1.8, 14mm f/2.8, 18mm f/1.4 (fisheye, 20, 24, 35, and 50 equivalents)
• Zooms: 9-25mm f/2.8-5, 9-30mm f/1.8-2.8, 9-30mm f/3.5-5.6, 9-43mm f/2.8-5.6, 10-30mm f/3.5-6.3, 10-47mm f/2.8-7, 10-50mm f/3.5-5.6, 10-145mm f/4-5.6, 11-28mm f/3.5-5.6 VR (24-68mm, 24-80mm, 24-120mm, 28-127mm, 28-120mm, 28-390mm, and 30-76mm equivalents)
• Macro: 37mm f/2.4, 40mm f/2.8, 40mm f/3.5 VR, 60mm f/3.5 (100, 105mm, 105mm, and 162mm equivalents)
• AW: 7.2-13.5mm f/3.5-4.5, 10-45mm f/4.5-5.6 (20-36mm, 28-80mm equivalents)
• Update: 70-300mm f/4.5-6 VR PF (smaller, lighter long telephoto)

Finally, note that Nikon offers an FT-1 adapter that allows you to mount F-mount (DX or FX) Nikon lenses on the Nikon 1 bodies. However, there are some limitations you need to be aware of. See Nikon’s page listing those FT-1 limitations.