Off-axis 200 parallel light tube

(1) Focal length of parallel light tube: 1800±20 mm;

(2) Caliber: ≥200 mm;

(3) System surface shape accuracy: ≤λ/4(RMS);

(4) Optical requirements: visible light, laser, low light;

(5) optical axis parallelism detection range: 0~1°;

(6) optical axis parallelism accuracy: ±20 ";

(7) Off-axis quantity ≥80mm;

(8) Form: off-axis double trans, no center blocking;

(9) Environmental adaptability requirements: working temperature: -20℃ ~ +50℃, storage temperature: -50℃ ~ +70℃;