Straight tube-type projection optical engine

Abstract

A straight tube-type projection optical engine, comprising an optical engine housing (100), an optical module (200) and a heat dissipation module (300). The optical engine housing (100) comprises a first housing (110) and a second housing (120). The first housing (110) and the second housing (120) are connected to each other to form an accommodating space. The optical module (200) is arranged in the accommodating space. The optical module (200) comprises a first lens (203), a display panel (205) and a second lens (207), which are arranged in sequence along the main optical axis of the optical module (200). An air intake channel is formed between the first lens (203) and the second lens (207). An air intake structure (400) in communication with the air intake channel is provided at a portion of the first housing (110) directly facing the air intake channel. An air outlet (101) in communication with the air intake channel is provided at a portion of the second housing (120) directly facing the air intake channel. The heat dissipation module (400) comprises a fan (310) arranged on the second housing (120). The fan (310) is configured to discharge air in the air intake channel from the optical engine housing (100) through the air outlet (101). The straight tube-type projection optical engine can improve heat dissipation efficiency.

Images