A head mounted display, HMD, system comprising: a micro-display to emit display light; a multifocal module coupled to the micro-display, the multifocal module to generate a plurality of images (207, 208) based on the display light, each of the plurality of images being associated with a different focal length, wherein the multifocal module further comprises: a voltage controlled optical element (318, 642) comprising a voltage-controlled cholesteric liquid crystal, CLC, element and a voltage-controlled polarizer switch coupled to the CLC element, and a controller configured to control the voltage applied to each of the CLC element and the polarizer switch to change the focal length associated with the image light passed through the multifocal module, wherein a filter stack is coupled to the multifocal module and the filter stack comprises a first quarter waveplate, a beamsplitter coupled to the first quarter waveplate, and a second quarter waveplate coupled to the beamsplitter. a micro-display to emit display light; a multifocal module coupled to the micro-display, the multifocal module to generate a plurality of images (207, 208) based on the display light, each of the plurality of images being associated with a different focal length, wherein the multifocal module further comprises: a voltage controlled optical element (318, 642) comprising a voltage-controlled cholesteric liquid crystal, CLC, element and a voltage-controlled polarizer switch coupled to the CLC element, and a controller configured to control the voltage applied to each of the CLC element and the polarizer switch to change the focal length associated with the image light passed through the multifocal module, wherein a filter stack is coupled to the multifocal module and the filter stack comprises a first quarter waveplate, a beamsplitter coupled to the first quarter waveplate, and a second quarter waveplate coupled to the beamsplitter. to generate a plurality of images (207, 208) based on the display light, each of the plurality of images being associated with a different focal length, wherein the multifocal module further comprises: a voltage controlled optical element (318, 642) comprising a voltage-controlled cholesteric liquid crystal, CLC, element and a voltage-controlled polarizer switch coupled to the CLC element, and a controller configured to control the voltage applied to each of the CLC element and the polarizer switch to change the focal length associated with the image light passed through the multifocal module, wherein a filter stack is coupled to the multifocal module and the filter stack comprises a first quarter waveplate, a beamsplitter coupled to the first quarter waveplate, and a second quarter waveplate coupled to the beamsplitter. a voltage controlled optical element (318, 642) comprising a voltage-controlled cholesteric liquid crystal, CLC, element and a voltage-controlled polarizer switch coupled to the CLC element, and a controller configured to control the voltage applied to each of the CLC element and the polarizer switch to change the focal length associated with the image light passed through the multifocal module, wherein a filter stack is coupled to the multifocal module and the filter stack comprises a first quarter waveplate, a beamsplitter coupled to the first quarter waveplate, and a second quarter waveplate coupled to the beamsplitter.