Laser ranging device

A laser ranging device, comprising a housing, a light-transmitting sheet, at least one laser emission module, and at least one laser receiving module, wherein:

• the light-transmitting sheet is connected to the housing to form an accommodating cavity;
• the laser emission module is located in the accommodating cavity and comprises a laser and an emission lens module;
• the emission lens module is arranged between the laser and the light-transmitting sheet and comprises at least one emission optical element;
• the laser receiving module is arranged within the accommodating cavity and comprises a laser detector and a receiving lens module;
• and the receiving lens module is arranged between the laser detector and the light-transmitting sheet and comprises at least one receiving optical element;
• and
• the laser receiving module also comprises a first enclosing member;
• the first enclosing member is arranged between a first optical element and the light-transmitting sheet, has one end hermetically connected to the light-transmitting sheet, and has the other end hermetically connected to the first optical element to enclose and form a first sealing cavity between the light-transmitting sheet and the first optical element;
• and the first optical element is the receiving optical element closest to the light-transmitting sheet;
• and/or
• the laser emission module also comprises a second enclosing member;
• the second enclosing member is arranged between a second optical element and the light-transmitting sheet, has one end hermetically connected to the light-transmitting sheet, and has the other end hermetically connected to the second optical element to enclose and form a second sealing cavity between the light-transmitting sheet and the second optical element;
• and the second optical element is an emission optical element closest to the light-transmitting sheet.