Non-telecentric projection lens and digital projection vehicle lamp

• Main Authors: CAI ZHIPENG, WANG PENGFEI, YANG JUEJING, SONG WEI, HUANG HUI, WANG LIANGLIANG, NIU LEI, XU FENG
• Format: Patent
• Language: Chinese; English
• Published: 07.04.2023
• Subjects: BLASTING; 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; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

The invention discloses a non-telecentric projection lens and a digital projection vehicle lamp, and relates to the technical field of projection lenses. The non-telecentric projection lens comprises a pixelated controllable digital chip, protective glass, a first optical objective lens, a second optical objective lens, a third optical objective lens and a fourth optical objective lens which are sequentially arranged along a projection light path, the first optical objective lens, the second optical objective lens and the third optical objective lens are spherical mirrors, the fourth optical objective lens is an aspherical mirror, and parameters of the first optical objective lens, the second optical objective lens, the third optical objective lens and the fourth optical objective lens meet the following relational expression: f4gt; f1gt; f2gt; f2gt; f3; wherein f1 is the focal length of the first optical objective lens, f2 is the focal length of the second optical objective lens, f3 is the focal length of th