Additive manufacturing device and method

An additive manufacturing method, comprising:

• providing a vessel for containing a material which is polymerisable on exposure to radiation, wherein providing the vessel comprises providing a vessel that has sidewalls and a transparent lower wall at a bottom of the vessel;
• providing a rigid transparent member;
• providing a programmable radiation module comprising an array of individually addressable radiation emitting or transmitting elements,
• wherein providing the programmable radiation module comprises attaching the programmable radiation module to the transparent lower wall and the sidewalls of the vessel such that the rigid transparent member is disposed between the bottom of the vessel and the programmable radiation module;
• providing a build platform having a build surface;
• positioning the build platform relative to the vessel such that an uncured layer of polymerisable material is defined between the build surface and the programmable radiation module;
• and irradiating the uncured layer of polymerisable material with radiation having a particular pattern, without magnification, by selectively activating elements of the array of the programmable radiation module in order to polymerise the uncured layer with the particular pattern.