Laser car courtesy lamp optical system formed by combining diffraction optical element and laser device

• Main Authors: PAN WEIQING, TIAN KEHAN, HUO YIJIE, BEN YU, YIN XIAODONG
• Format: Patent
• Language: English
• Published: 03.02.2016
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO USESOR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

The invention discloses a laser car courtesy lamp optical system formed by combining a diffraction optical element and a laser device. The laser car courtesy lamp optical system comprises a laser illuminating light source and the diffraction optical element, wherein the laser illuminating light source is a divergency light source or a collimating parallel light source, and the diffraction optical element is designed according to parameters of the laser illuminating light source and used for achieving optical field distribution required by the optical system. The diffraction optical element has the characteristics of being small in size, easy to mount and low in cost and can greatly reduce the size of the optical system and reduce the cost of an optical product. Meanwhile, according to the diffraction optical element, the optical indicatrix allowance is large, the influence of fine dust and dirt of a light pass area on an abnormal-shaped optical field is quite small, the requirement for the application environments is low, the element can adapt to various complex application environments, an adjusting system with high light utilization efficiency of the optical field, low cost, simple optical structure design, small size and high-accuracy divergence angle is completely achieved, and the functions and applicability of the optical system are improved.