Abstract: Embodiments of this application relate to the technical field of optical design, and disclose a method for adjusting field of view angle applied to a waveguide plate in a near-eye display equipment, the waveguide plate forms a tilt angle relative to horizontal direction of human face, the method firstly acquires refractive index, bottom angle of the waveguide plate and a required field of view angle, then calculates the tilt angle of the waveguide plate according to the refractive index and bottom angle of the waveguide plate and the field of view angle, and finally, adjusts the tilt angle to make sure the near-eye display equipment with the field of view angle; the method disclosed by this application enables the waveguide plate to realize low refractive index and large field of view angle at the same time, and features better imaging, lower cost and better stability.

Abstract: Embodiments of this application relate to the technical field of optical design, and disclose a method for adjusting field of view angle applied to a waveguide plate in a near-eye display equipment, the waveguide plate forms a tilt angle relative to horizontal direction of human face, the method firstly acquires refractive index, bottom angle of the waveguide plate and a required field of view angle, then calculates the tilt angle of the waveguide plate according to the refractive index and bottom angle of the waveguide plate and the field of view angle, and finally, adjusts the tilt angle to make sure the near-eye display equipment with the field of view angle; the method disclosed by this application enables the waveguide plate to realize low refractive index and large field of view angle at the same time, and features better imaging, lower cost and better stability.

Abstract: A single-pump multi-wavelength lasing semiconductor Raman pump laser comprises a thermoelectric cooler arranged in a shell; a heat transition bearing platform arranged in the thermoelectric cooler; a semiconductor Raman pump laser tube core arranged on the heat transition bearing platform; and a coupling lens group, a thermistor and a backlight detector that are arranged on the heat transition bearing platform respectively. The pump laser tube core, the backlight detector, the thermistor and the thermoelectric cooler are electrically connected to pins outside a laser tube shell. A pump combination apparatus comprises a first signal transmission fiber, a pump signal combiner and a second signal transmission fiber that are sequentially connected to each other. An input terminal of the pump signal combiner is connected to an output terminal of an isolated polarization beam combiner and depolarizer.

Abstract: A single-pump multi-wavelength lasing semiconductor Raman pump laser comprises a thermoelectric cooler arranged in a shell; a heat transition bearing platform arranged in the thermoelectric cooler; a semiconductor Raman pump laser tube core arranged on the heat transition bearing platform; and a coupling lens group , a thermistor and a backlight detector that are arranged on the heat transition bearing platform respectively. The pump laser tube core, the backlight detector, the thermistor and the thermoelectric cooler are electrically connected to pins outside a laser tube shell. A pump combination apparatus comprises a first signal transmission fiber, a pump signal combiner and a second signal transmission fiber that are sequentially connected to each other. An input terminal of the pump signal combiner is connected to an output terminal of an isolated polarization beam combiner and depolarizer.

Abstract: The present invention relates to a mobile air conditioner which comprises an insulated housing having a cooled air outlet and a heated air outlet, an evaporator located in the said housing, a condenser, an electrical fan having an air chamber, and a reservoir for collecting condensed water formed on the evaporator. The evaporator is located between the air chamber and cooled air outlet; while the condenser is located between the air chamber and heated air outlet. The cavity of the said reservoir is in fluid connection with a drain channel which has a drain meatus located in the air-discharge passage extended from the air outlet of the air chamber to the condenser. The condensed water from the reservoir to the drain channel can be atomized into tiny drops by rapid air flow from the air chamber. The tiny drops are blown through the drain channel onto the condenser for being heated and onto the evaporator for being cooled, then flowing into the reservoir at last.