Perfectly collimated light would not spread out with distance at all. No real light is perfectly collimated. Real light will spread a little as it travels. Diffraction prevents anyone from creating a perfectly collimated beam.
p ɜː f ɛ k t l i WORD_BOUNDARY k ɑ l ɪ m eɪ t ɪ d WORD_BOUNDARY l aɪ t WORD_BOUNDARY w ʊ d WORD_BOUNDARY n ɑ t WORD_BOUNDARY s p ɹ ɛ d WORD_BOUNDARY aʊ t WORD_BOUNDARY w ɪ ð WORD_BOUNDARY d ɪ s t ə n s WORD_BOUNDARY æ t WORD_BOUNDARY ɔ l WORD_BOUNDARY n oʊ WORD_BOUNDARY ɹ iː ə l WORD_BOUNDARY l aɪ t WORD_BOUNDARY ɪ z WORD_BOUNDARY p ɜː f ɛ k t l i WORD_BOUNDARY k ɑ l ɪ m eɪ t ɪ d WORD_BOUNDARY ɹ iː ə l WORD_BOUNDARY l aɪ t WORD_BOUNDARY w ɪ l WORD_BOUNDARY s p ɹ ɛ d WORD_BOUNDARY ʌ WORD_BOUNDARY l ɪ t ə l WORD_BOUNDARY æ z WORD_BOUNDARY ɪ t WORD_BOUNDARY t ɹ æ v ə l z WORD_BOUNDARY d ɪ f ɹ æ k ʃ ə n WORD_BOUNDARY p ɹ ɪ v ɛ n t s WORD_BOUNDARY ɛ n ɪ w ʌ n WORD_BOUNDARY f ɹ ʌ m WORD_BOUNDARY k ɹ iː eɪ t ɪ ŋ WORD_BOUNDARY ʌ WORD_BOUNDARY p ɜː f ɛ k t l i WORD_BOUNDARY k ɑ l ɪ m eɪ t ɪ d WORD_BOUNDARY b iː m WORD_BOUNDARY