Gluing process for optical processing
Release time:
2024-08-02
Gluing process for optical processing
In the field of optical processing, the gluing process is a key technology that is widely used to improve image quality, eliminate chromatic aberration, reduce light energy loss, and simplify the processing process of optical parts. This article will introduce the gluing process in optical processing in detail, including its basic principles, common methods, selection of gluing materials, process flow, and disassembly technology.
1. Overview of the gluing processThe gluing process refers to the bonding of two or more optical parts (such as lenses, prisms, plane mirrors, etc.) together through appropriate adhesives and process conditions to form optical components with specific optical properties. This process not only improves the overall performance of the optical system, but also simplifies the machining of optical parts.
2. Gluing method: The gluing method of optical parts mainly includes gluing method and light gluing method.
1. Gluing method Gluing is the use of optical grade adhesive to glue two or more optical parts into a whole. This method requires a high level of adhesive, which is colorless and transparent, high transmittance, low volume shrinkage, high mechanical strength, and good chemical and thermal stability. Commonly used adhesives include photosensitive adhesives, epoxy resin adhesives, etc.
Photosensitive adhesive has been widely used in modern optical processing because of its advantages of easy use, high efficiency, small shrinkage, and good optical image quality. The gluing process generally consists of the following steps:
1. Clean the glued parts: Make sure that the surface of the optical parts to be glued is clean and free of impurities.
2. Prepare the tooling: Adjust the horizontal workbench and prepare the required tools and materials.
3. Dispensing: drop an appropriate amount of glue on the glue joint surface and squeeze out air bubbles and excess glue to make the thickness of the glue layer appropriate and uniform.
4. Centering and initial curing: Adjust the position of the optical parts by centering tools to ensure that the center error or angle error is within the allowable range, and then use ultraviolet lamp or high-pressure lamp irradiation for initial curing.
5. Formal curing: Put the initially cured adhesive parts into the electric oven and keep them at a constant temperature (such as 60°C) for a period of time to complete the complete curing of the adhesive layer.
2. The light glue method relies on the attraction of molecules between the polished surfaces to tightly bind the optical parts together. This method does not require any medium, so the optical properties remain unchanged, the deformation is small, and the cold and heat resistance are good. However, the light glue method requires extremely high surface shape accuracy of optical parts, which increases the difficulty of processing. At the same time, the photoglue process also has strict requirements for environmental conditions (e.g. temperature, humidity, cleanliness).
The process flow of the light glue method is roughly as follows:1. Preparation & Inspection: Check the chamfered surfaces of all optical parts and remove polishing powder and asphalt to ensure that the surface of the parts is smooth and flawless.
2. Smooth adhesive surface treatment: first wipe the concave surface and then the convex surface, put the two lenses together, and observe the change of interference fringes.
Key words:
Optical gluing,optical glass,gluing process
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