An optical transmitting module for receiving and transmitting an image beam (IB) to at least one eye (EY) of a user, comprising: a waveguide and a first lens , wherein the waveguide is located on a transmission path of the image beam (IB), wherein the waveguide comprises a first side (S 110) and a second side (S120) opposite to each other, the waveguide comprising a plurality of beam splitters (BS), the beam splitters (BS) being disposed between the first side (S110) and the second side (S120), each of the beam splitters (BS) being configured to receive the image beam (IB) and split the image beam (IB) into a first image beam (IB1) and a second image beam (IB2), the first image beam (IB1) being transmitted to another one of the beam splitters (BS) after passing through one of the beam splitters (BS), the second image beam (IB2) being outputted from the first side (S110) of the waveguide after being reflected by said one of the beam splitters (BS), the second image beam (IB2) being transmitted to the at least one eye (EY) of the user, so as to display a virtual image (VI); and the first lens having a negative refracting power, the first lens being disposed between the first side (S110) of the waveguide and the at least one eye (EY) of the user, located on a transmission path of the second image beam (IB2), and configured to cause a plurality of the virtual images (VI) displayed by a plurality of the second image beams (IB2) reflected from the different beam splitters (BS) of the waveguide at the same angle to coincide on a focal plane (fs) of the first lens ,wherein the optical transmitting module further comprises an optical element , the waveguide being located between the optical element and the first lens , and wherein the first lens is configured to modulate a light having a specific wave band range, the optical element is a filter configured to filter the light having the specific wave band range, and a wavelength range of the image beam (IB) falls in the specific wave band range. a waveguide and a first lens , wherein the waveguide is located on a transmission path of the image beam (IB), wherein the waveguide comprises a first side (S 110) and a second side (S120) opposite to each other, the waveguide comprising a plurality of beam splitters (BS), the beam splitters (BS) being disposed between the first side (S110) and the second side (S120), each of the beam splitters (BS) being configured to receive the image beam (IB) and split the image beam (IB) into a first image beam (IB1) and a second image beam (IB2), the first image beam (IB1) being transmitted to another one of the beam splitters (BS) after passing through one of the beam splitters (BS), the second image beam (IB2) being outputted from the first side (S110) of the waveguide after being reflected by said one of the beam splitters (BS), the second image beam (IB2) being transmitted to the at least one eye (EY) of the user, so as to display a virtual image (VI); and the first lens having a negative refracting power, the first lens being disposed between the first side (S110) of the waveguide and the at least one eye (EY) of the user, located on a transmission path of the second image beam (IB2), and configured to cause a plurality of the virtual images (VI) displayed by a plurality of the second image beams (IB2) reflected from the different beam splitters (BS) of the waveguide at the same angle to coincide on a focal plane (fs) of the first lens ,wherein the optical transmitting module further comprises an optical element , the waveguide being located between the optical element and the first lens , and wherein the first lens is configured to modulate a light having a specific wave band range, the optical element is a filter configured to filter the light having the specific wave band range, and a wavelength range of the image beam (IB) falls in the specific wave band range. <EOS>