CN209311721U - A reflective lens array assembly - Google Patents
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- CN209311721U CN209311721U CN201822267731.9U CN201822267731U CN209311721U CN 209311721 U CN209311721 U CN 209311721U CN 201822267731 U CN201822267731 U CN 201822267731U CN 209311721 U CN209311721 U CN 209311721U
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Abstract
本实用新型涉及光接收器件领域，特别涉及一种带反射的透镜阵列组件。采用透镜阵列和反射棱镜，透镜阵列入光面和出光面平行，反射棱镜贴合在透镜阵列的出光面，反射棱镜的反射面正对透镜阵列的出光面，透镜阵列的出光面和反射棱镜的入光面通过固化后折射率与两者之间的折射率匹配的光学胶水粘合在一起。把用于平行光汇聚的透镜阵列的出光面设计为与其入光面平行的平面，将组装精度和定位精度要求都很高的反射棱镜(反射镜组件)粘结到透镜阵列的出光面，这样就实现了两大光路元件的有源耦合定位，大大降低了工艺难度，也减少了复杂元件制造带来的物料成本。
The utility model relates to the field of optical receiving devices, and in particular to a lens array assembly with reflection. A lens array and a reflection prism are used, the light incident surface and the light emitting surface of the lens array are parallel, the reflection prism is attached to the light emitting surface of the lens array, the reflection surface of the reflection prism is directly opposite to the light emitting surface of the lens array, and the light emitting surface of the lens array and the light incident surface of the reflection prism are bonded together by optical glue whose refractive index matches the refractive index between the two after curing. The light emitting surface of the lens array used for parallel light convergence is designed to be a plane parallel to its light incident surface, and the reflection prism (reflector assembly) with high assembly accuracy and positioning accuracy is bonded to the light emitting surface of the lens array, so that the active coupling positioning of the two optical path components is realized, which greatly reduces the process difficulty and also reduces the material cost caused by the manufacture of complex components.
Description
技术领域technical field
本实用新型涉及光接收器件领域，特别涉及一种带反射的透镜阵列组件。The utility model relates to the field of light receiving devices, in particular to a reflective lens array assembly.
背景技术Background technique
当前的多通道高速接收光器件要么采用背照式方案，即接收芯片在反射镜上方；要么采用正照式方案，即接收芯片在反射镜下方。当采用正照式方案时，由于PD芯片光敏面和焊接引线区域离得很近，大大限制了其上方反射镜元件的设计空间及组装空间，因此对反射镜元件的组装工艺要求很高，而按照常规的反射镜设计，光接收端口的透镜阵列和反射镜受空间所限难以校正对位，非常不利于批量化生产。The current multi-channel high-speed optical receiving devices either adopt a back-illuminated scheme, that is, the receiving chip is above the reflector, or a front-illuminated scheme, that is, the receiving chip is below the reflector. When the front-illumination scheme is adopted, since the photosensitive surface of the PD chip is very close to the welding lead area, the design space and assembly space of the mirror element above it are greatly limited, so the assembly process requirements for the mirror element are very high, and according to With the conventional mirror design, the lens array and the mirror at the light receiving port are limited by the space and it is difficult to correct the alignment, which is very unfavorable for mass production.
实用新型内容Utility model content
本实用新型的目的在于，避免上述现有技术中的不足之处而提供一种带反射的透镜阵列组件，用于降低工艺难度。The purpose of the utility model is to avoid the disadvantages of the above-mentioned prior art and provide a reflective lens array assembly for reducing the difficulty of the process.
为实现上述目的，提供一种带反射的透镜阵列组件，包括透镜阵列和反射棱镜，所述透镜阵列入光面和出光面平行，所述反射棱镜贴合在所述透镜阵列的出光面，所述反射棱镜的反射面正对所述透镜阵列的出光面，透镜阵列的出光面和反射棱镜的入光面通过固化后折射率与两者之间的折射率匹配的光学胶水粘合在一起。In order to achieve the above object, a reflective lens array assembly is provided, including a lens array and a reflective prism, the light incident surface of the lens array is parallel to the light exit surface, and the reflective prism is attached to the light exit surface of the lens array, so The reflective surface of the reflective prism faces the light exit surface of the lens array, and the light exit surface of the lens array and the light incident surface of the reflective prism are glued together by optical glue whose refractive index matches the refractive index between them after curing.
其中，所述透镜阵列为矩形，所述透镜阵列的多个透镜横向排列在所述透镜阵列的入光面。Wherein, the lens array is rectangular, and a plurality of lenses of the lens array are arranged laterally on the light incident surface of the lens array.
其中，多个透镜间隔均匀的排列在所述透镜阵列的入光面。Wherein, a plurality of lenses are arranged at uniform intervals on the light incident surface of the lens array.
其中，所述反射棱镜是直角三棱镜，其一个直角边贴合在所述透镜阵列的出光面，其反射面安装在斜面内侧。Wherein, the reflective prism is a right-angled triangular prism, one of its right-angled sides is attached to the light-emitting surface of the lens array, and its reflective surface is installed inside the slope.
其中，所述透镜阵列的入光面镀有增透膜。Wherein, the light incident surface of the lens array is coated with an anti-reflection film.
其中，所述反射棱镜的出光面镀有增透膜。Wherein, the light-emitting surface of the reflective prism is coated with an anti-reflection film.
其中，所述反射棱镜的入光面和反射面均为抛光面。Wherein, both the incident surface and the reflecting surface of the reflective prism are polished surfaces.
有益效果：本实用新型提出的一种带反射的透镜阵列组件，采用透镜阵列和反射棱镜，透镜阵列入光面和出光面平行，反射棱镜贴合在透镜阵列的出光面，反射棱镜的反射面正对透镜阵列的出光面，透镜阵列的出光面和反射棱镜的入光面通过固化后折射率与两者之间的折射率匹配的光学胶水粘合在一起。把用于平行光汇聚的透镜阵列的出光面设计为与其入光面平行的平面，将组装精度和定位精度要求都很高的反射棱镜(反射镜组件)粘结到透镜阵列的出光面，这样就实现了两大光路元件的有源耦合定位，大大降低了工艺难度，也减少了复杂元件制造带来的物料成本。Beneficial effects: the utility model proposes a lens array assembly with reflection, which adopts a lens array and a reflective prism, the light incident surface of the lens array is parallel to the light exit surface, the reflective prism is attached to the light exit surface of the lens array, and the reflective surface of the reflective prism Facing the light exit surface of the lens array, the light exit surface of the lens array and the light entrance surface of the reflective prism are glued together by optical glue whose refractive index matches the refractive index between the two after curing. The light-emitting surface of the lens array used for parallel light convergence is designed as a plane parallel to its light-incident surface, and the reflective prism (mirror assembly) that requires high assembly accuracy and positioning accuracy is bonded to the light-emitting surface of the lens array, so that The active coupling positioning of the two optical path components is realized, which greatly reduces the difficulty of the process and reduces the cost of materials caused by the manufacture of complex components.
附图说明Description of drawings
图1是该带反射的透镜阵列组件的结构示意图。FIG. 1 is a schematic structural view of the reflective lens array assembly.
图2是该带反射的透镜阵列组件的光路结构示意图。FIG. 2 is a schematic diagram of the optical path structure of the reflective lens array assembly.
具体实施方式Detailed ways
为了使本实用新型所解决的技术问题、技术方案及有益效果更加清楚明白，以下结合实施例和附图，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in combination with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.
该带反射的透镜阵列组件如图1和2所示，包括透镜阵列1和反射棱镜2。透镜阵列1为矩形，透镜阵列1入光面101和出光面102平行，透镜阵列的多个透镜横向且间隔均匀的排列在的入光面101内，且入光面101镀有增透膜。反射棱镜2是直角三棱镜，直角边的一个侧面贴合在透镜阵列1的出光面102，反射棱镜2的反射面203安装在直角三棱镜的斜面内侧且正对透镜阵列1的出光面102，反射棱镜2的出光面201镀有增透膜，反射棱镜2的入光面202和反射面203则都是抛光面，透镜阵列1的出光面102和反射棱镜2的入光面202通过固化后折射率与两者之间的折射率匹配的光学胶水粘合在一起。The reflective lens array assembly is shown in FIGS. 1 and 2 , including a lens array 1 and a reflective prism 2 . The lens array 1 is rectangular, the light incident surface 101 and the light exit surface 102 of the lens array 1 are parallel, a plurality of lenses of the lens array are arranged in the light incident surface 101 horizontally and evenly spaced, and the light incident surface 101 is coated with an anti-reflection film. The reflective prism 2 is a right-angled triangular prism, one side of the right-angled side is attached to the light-emitting surface 102 of the lens array 1, and the reflective surface 203 of the reflective prism 2 is installed on the inside of the slope of the right-angled triangular prism and faces the light-emitting surface 102 of the lens array 1. The reflective prism The light-emitting surface 201 of the reflective prism 2 is coated with an anti-reflection film, and the light-incident surface 202 and the reflective surface 203 of the reflective prism 2 are both polished surfaces. Bonded with index-matched optical glue between the two.
把用于平行光汇聚的透镜阵列1的出光面102设计为与其入光面101平行的平面，将组装精度和定位精度要求都很高的反射棱镜2(反射镜组件)粘结到透镜阵列1的出光面102，这样就实现了两大光路元件的有源耦合定位，大大降低了工艺难度，也减少了复杂元件制造带来的物料成本。The light-emitting surface 102 of the lens array 1 used for parallel light convergence is designed as a plane parallel to the light-incident surface 101, and the reflective prism 2 (mirror assembly) that requires high assembly accuracy and positioning accuracy is bonded to the lens array 1 In this way, the active coupling and positioning of the two optical path components is realized, which greatly reduces the difficulty of the process, and also reduces the cost of materials brought about by the manufacture of complex components.
透镜阵列1的出光面102与反射棱镜2的入光面202通过折射率匹配的光学胶水粘合在一起。透镜阵列1的入光面101镀有增透膜，出光面102可以不镀膜；反射棱镜2的201镀有增透膜，入光面202及反射面203可以不镀膜，但需要抛光。这种带反射的透镜阵列组件结构设计简单，反射棱镜不需要单独设计支撑元件部分，结构上更加紧凑，节省单独反射(棱)镜组件组装或透镜阵列耦合所需的避让空间；更重要的是省掉了反射棱镜组件定位组装的工艺步骤，提高了整个器件的制作效率。The light exit surface 102 of the lens array 1 and the light entrance surface 202 of the reflective prism 2 are bonded together by optical glue with matching refractive index. The light incident surface 101 of the lens array 1 is coated with an anti-reflection film, and the light exit surface 102 may not be coated; the 201 of the reflective prism 2 is coated with an anti-reflection film, and the light incident surface 202 and the reflective surface 203 may not be coated, but they need to be polished. This reflective lens array component has a simple structural design, and the reflective prism does not need to separately design the support element part, and the structure is more compact, saving the space for avoiding the assembly of a separate reflective (prism) mirror component or the coupling of the lens array; more importantly, The process step of positioning and assembling the reflective prism assembly is omitted, and the manufacturing efficiency of the whole device is improved.
最后应当说明的是，以上实施例仅用于说明本实用新型的技术方案而非对本实用新型保护范围的限制，尽管参照较佳实施例对本实用新型作了详细说明，本领域的普通技术人员应当理解，可以对本实用新型的技术方案进行修改或者等同替换，而不脱离本实用新型技术方案的实质和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model rather than limiting the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should It is understood that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.
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