If you have an accident, just order a new lampshade for the lamp.
Lampshades for the classic PH 3½-2½ Floor Lamp, designed by Poul Henningsen.
The PH 3½-2½ floor lamp is designed on the principle of a reflective multi-shade system based on a logarithmic spiral, where the focal point of the light source is placed in the centre of the spiral. The mouth-blown three-layer opal glass, which is glossy on the outside and sandblasted on the inside, emits a soft and diffused light.
See the different PH lamps here.