Application and Development of Cylindrical Mirror in Modern Optoelectronic Products

With the rapid development of science and technology and the increasing standard of living of people, people have higher expectations for the quality of life.

So as to make our life more exciting. Faster optoelectronic products inadvertently into our lives. But at the same time it brings convenience to us, it is also always accepting the test of the market.

Green, low-carbon, and environmental protection As the voice of the entire earth and the common aspiration of all humanity, more and more people have become acutely aware of how the balance between technological development and environmental protection should be balanced. So a batch of batches filled with the convenience of human wisdom, green high-tech optoelectronic products will change our life...

Digital fax, graphic scanning equipment pursue paperless office concept.

Bar code scanning equipment makes work more efficient and lives more convenient.

Advanced medical devices reduce the patient's pain while improving the therapeutic effect.

The increasingly perfect photography equipment keeps every moment of our life.

The video surveillance imaging equipment that is currently being promoted has brought us irreplaceable security and full comfort...

Perhaps, while we enjoy the convenience of optoelectronic products, we have neglected the important components in optoelectronic products -- cylindrical mirrors

As we all know, optoelectronic products are mostly composed of optical systems, electronic devices and mechanical systems. The optical path system plays a crucial role in the collection and transmission of information.

The general optical system consists of lenses, beamsplitters, mirrors and other optical components. Its surface shape is usually spherical or flat two categories. The cylindrical mirror is an aspheric lens, which can effectively reduce the spherical aberration and chromatic aberration. It is divided into a plano-convex cylindrical lens, a plano-concave cylindrical lens, a double-convex cylindrical lens, and a double concave cylindrical lens. With one-dimensional zoom function. Cylindrical mirrors are mainly used to change the size of the imaging design requirements. For example, convert a spot spot into a line spot, or change the height of the picture without changing the desired width. The special optical properties of cylindrical mirrors, cylindrical mirrors with the rapid development of high technology, its use is more and more extensive. Such as line aggregation system. Film-receiving system. Scanning imaging system for facsimile and printing typography. And gastroscopy in the medical field. Laparoscopic, car-borne video systems in the automotive field have the participation of cylindrical mirrors. Simultaneously in linear detector illumination, bar codes Scanning, holographic lighting, optical information processing, computer, laser emission. As well as in the strong laser system and synchrotron radiation beam line also has a wide range of applications. At the same time, with the continuous improvement of cylindrical mirror processing technology, has formed a mature and efficient processing technology, its good quality reproducibility and repeatability Sex gradually gained market recognition. At present, the process is gradually replacing the relatively backward traditional process.

 As is known, a cylindrical mirror consists of a plane and a concave (convex) plane or consists of two concave (convex) planes. Can be divided into flat convex cylindrical mirror, flat concave and convex cylindrical mirror, double convex cylindrical mirror, double concave cylindrical mirror, concave and convex cylindrical mirror. The shape is as shown in the figure below:

The cylindrical mirror is a combination of two optical surfaces. The relative positions of the two optical surfaces determine the overall optical properties of the cylindrical mirror. Therefore, how to ensure the rationality of the relative positions of two optical surfaces has become a key and difficult point in the processing of cylindrical mirrors. What is the ideal positional relationship between the two optical surfaces of a cylindrical mirror? The following is a three-view illustration of a plano-convex mirror:

Then, in the process of cylindrical mirror processing, if there are abnormalities in the relative positions of the two optical surfaces, common types of bad items are as follows: (Using plano-convex cylindrical mirrors as an example)

One bus bad

A: Busbar offset: The cylindrical optical surface is shifted to one side with respect to the center of the plane in the axial direction of the cylinder. As shown below:

Causes and Countermeasures:

1. Fixture design or fixture processing defects, bad sag in the attachment surface and centerline. Need to start with governance tools to improve.

2. The lens is not attached properly, and it needs to be improved from the attachment method.

3. The product moves during processing. The adhesive force required for the adhesive and the stress load on the lens during processing are improved.

B: Bus bar tilt: The optical surface of the cylinder is inclined at a certain angle to the plane. The busbars are not parallel to the attached datum edge. As shown below:

Causes and Countermeasures:

1. Fixture design or fixture processing defects, lens adhesion surface and the central axis of the fixture is not parallel or the tank body is not good. Need to start with governance tools to improve.

2. The lens is not attached properly, and it needs to be improved from the attachment method.

Second bus bad verticality

Causes and Countermeasures:

1. Fixture design or fixture processing defects, and the two bases of the fixture are not straight. Need to start with governance tools to improve.

2. The lens is not attached properly, and it needs to be improved from the attachment method.

3. The precision of the cutting machine is insufficient, and the straight angle between the spindle and the table feed direction is not good. Need to improve the cutting machine processing accuracy. According to the above, the position of the busbar of the cylindrical mirror has a crucial role in its optical performance. Therefore, besides the guarantee of the busbar in the process of processing, it is also very important in the detection process. The following describes a new method of cylindrical mirror bus detection:

Point laser reflection detector

principle:

Using a laser generator, the light source is directed to the cylindrical lens to be tested through a dedicated lens. After the cylindrical lens receives the light source, the cylindrical surface reflects the light source back to the image receiving device, and the image is presented on the display by the CCD camera device. The final judgment is made by the testing personnel.

advantage:

High detection accuracy: detection error can be controlled at 0.001mm.

High detection efficiency: skilled persons can detect 20PCS per minute.

Unexplained appearance: using laser reflection detection,

No direct contact with the surface of the product does not affect the appearance of the product.

Cylindrical mirror processing new technology

For a long time, most of the cylindrical mirror manufacturers in China have adopted traditional processing methods. The single-plate translational processing method determines the processing efficiency to be relatively low. Gradually unable to meet the needs of customers. Our company has developed a set of advanced cylindrical mirror processing methods based on years of lens processing experience and learning advanced processing technology from abroad. This method changes the traditional single-chip processing into disc processing, greatly improves the processing efficiency, and can reduce the processing cost. The stability of processing quality has also been significantly improved.

Reflective laser bus detector