Free-form surface reflection type coupling lens
A coupling lens and curved surface reflection technology, which is applied in the field of coupling lenses and optical components, can solve the problems of high production cost, high process requirements, and complicated manufacturing process, and achieve the effect of simple structure and high coupling efficiency
Pending Publication Date: 2021-01-01
SHENZHEN DULE PRECISION MFG
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[0003] In summary, the purpose of the present invention is to solve the existing optical coupling lens architecture needs to process the lens surface on the light incident side and the light exit side of the lens, the manufacturing process is complicated, the process requirements are high, and the production cost is high. A Freeform Surface Reflective Coupling Lens
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[0014] The structure of the present invention will be further described below in conjunction with the accompanying drawings and preferred specific embodiments of the present invention.
[0015] refer to figure 2 with image 3 As shown in , the free-form surface reflective coupling lens disclosed in the present invention includes a first light guide part 1 corresponding to the laser light source and a second light guide part 2 corresponding to the light receiving module; the first light guide part 1 and the laser The side corresponding to the light source is the first transmission surface 11, the side of the second light guide part 2 corresponding to the light receiving module is the second transmission surface 21, the other side of the first light guide part 1 and the second light guide part 2 The free-form surface 3 is provided at the angle between the optical axes on the other side; the preferred solution is: the first light guide part 1 and the second light guide part 2 a...
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The invention discloses a free-form surface reflective coupling lens, and relates to the technical field of coupling lenses. The free-form surface reflective coupling lens solves the technical defectsthat an existing optical coupling lens framework is complex in manufacturing process, high in process requirement and high in production cost are overcome. The free-form surface reflective coupling lens comprises a first light guide part corresponding to a laser light source and a second light guide part corresponding to a light receiving module, wherein a free-form surface part is arranged at the optical axis included angle of the first light guide part and the second light guide part; a deflection angle of main light incident light of the first light guide part and emergent light of the second light guide part on the free-form surface part is between 45+ / 3 degrees; the laser light source guided in by the first light guide part is reflected by the free-form surface part to form convergent light, and then the convergent light is emitted from the second transmission surface of the second light guide part. According to the free-form surface reflective coupling lens, mirror surfaces do not need to be machined on the light-in side and the light-out side of the lens respectively, and the lens is simple in structure and suitable for large-batch manufacturing. The free-form surface reflective lens is insensitive to the wavelength of the laser light source, wavelength drift of the laser does not affect the coupling efficiency, and the free-form surface reflective coupling lens is suitable for laser light sources with different wavelengths and high in coupling efficiency.
Description
technical field [0001] The invention relates to the field of optical elements, in particular to the technical field of coupling lenses. Background technique [0002] In the field of optical communication, the optical coupling lens is used between the laser light source and the light receiving module to realize optical coupling. Such as figure 1 As shown in , the existing coupling lens is provided with a collimating transmission surface 122 on the light incident side, and a focusing lens surface 121 is provided on the light exiting side. The lens surface focuses the light to the light-receiving module, or after being turned by the total reflection surface 114, the focusing lens surface 121 emits the light to the light-receiving module. For example, an optical coupling lens disclosed in the application number CN2012103680474 adopts the above structure when performing optical coupling. The use of this structure needs to process the lens surface in two vertical directions, th...
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IPC IPC(8): G02B6/42
CPCG02B6/421G02B6/4206
Inventor 谢衍琛
Owner SHENZHEN DULE PRECISION MFG