The mysterious veil of holographic imaging technology in the prepress field

Speaking of holographic technology, people will immediately think of holographic three-dimensional images or laser anti-counterfeiting images with mottled colors. In fact, the application of holographic technology is far more than that. Bar code scanners in supermarkets also use this technology. It is worth mentioning here that Holotek has been devoted to the development of holographic imaging technology for 18 years, and has more than 15 US patents in this regard. Its products include laser imagesetter and direct plate-making system, electrostatic copying System, X-ray system, semiconductor manufacturing flaw detection equipment and image recording system for film shooting. In 1996, Holotek was acquired by ECRM, so that these patented technologies were included in ECRM's product line. Now optical components using holographic technology have been applied to ECRM series laser imagesetter and direct plate-making machine, and have achieved success in the market. This is due to the precise imaging characteristics of the holographic system, which makes the image output speed and imaging quality perfectly unified.

The secret of ultra-high speed holographic imaging technology

Compared with other laser imagesetters, the output speed of laser imagesetters using holographic technology is said to reach 72 inches per minute. In fact, there is still potential for further improvement in the speed of holographic imaging.

Although the imaging speed using holographic technology has increased exponentially, the imaging system itself does not look particularly surprising. The core component of the system includes a holographic refracting mirror, which looks like a thickened ordinary disc, whose surface is divided into 5 or 6 parts. As with traditional rotating mirrors, holographic refraction mirrors are also mechanisms that allow laser beams to be scanned and imaged on photosensitive materials. The faster the scanning mirror rotates, the faster the speed of the imagesetter. But the speed of the simple specular reflection system will be limited by the speed of the scanning motor.

In the holographic imaging system, the method of increasing the imaging speed is to decompose the light beam, so that during imaging, the scanning motor can produce multiple beams of scanning lines per revolution. This effect can also be achieved by using a multi-faceted prism system, but in comparison, the latter's operation balance is more difficult to control, which adversely affects the accuracy of imaging.

The holographic refraction mirror is a perfect disc, so it can keep stable when rotating at high speed. The densely spaced gratings are arranged in the circumferential direction of the disk, which can be 5000 channels per inch. The entire grating disk is divided into multiple sectors, just like a pie is cut into several parts. When the holographic optical mirror rotates, each fan surface will pass the laser beam, and the beam will be refracted when passing through the grating surface and scanned onto the imaging material. Each sector of the grating disk can generate a beam of scanning lines, so the 5-face grating disk can generate 5 beams of scanning lines per revolution. Compared with a simple specular reflection system, it can only generate a beam of scanning lines. The more fans on the grating disk, the faster the imaging speed
Holographic imaging technology makes imaging quality better

The essential difference between a holographic imaging system and an ordinary specular reflection system is that the latter relies on the reflected light beam to change the optical path, while the holographic system allows the light beam to reach the imaging surface through the refraction mirror. Due to the limitations of the manufacturing process, it is impossible for any mirror surface to be absolutely flat, and the imaging of the reflective system will therefore deviate. If the speed of the mirror is increased, this deviation will be exacerbated. Even small errors will be amplified by the mirror reflection system In the holographic imaging system, because the beam is refracted rather than reflected, this imaging error can be reduced a lot.

In addition, due to the uneven structure of the mirror itself, it is more likely to produce vibration when rotating at high speed. Therefore, for the reflection system, one problem that needs to be solved is to find a method to compensate for the scan path error. The optical path of the holographic refraction mirror is not sensitive to jitter, which simplifies the structure of the optical system. Therefore, the holographic imaging system can provide a higher guarantee in terms of optical path accuracy. In fact, the ECRM Tiger Cat (Tiger Leopard) series direct plate-making system using holographic imaging technology is designed for high-precision commercial printing customers.

Holographic imaging technology and Titanic

"Titanic" is one of the most costly films in the history of film, and many of the grand scenes are dependent on special effects. To make these special effects can be displayed on the screen vividly, holographic imaging technology is indispensable. In fact, the Hollywood film industry uses holographic imaging technology to record images on film. Such movies include "Batman and Robin", "enemy of the country" and so on. In addition to the film industry, in other industries including the printing industry, there are many manufacturers also use this technology, including Agfa, DuPont, Kodak, 3M, Monotype, WesternLitho, Xerox and other manufacturers.

The future of holographic imaging technology

Holographic technology reduces the cost of optical components. For the field of printed images, the intervention of holographic technology has greatly improved its appearance. In the near future, we will find that the speed of laser imaging is faster than that of film transmission. Manufacturers may need to redesign their equipment to increase the speed of mechanical transmission of imaging media.

To further develop the performance of holographic imaging technology, there is still some way to go. Although the current grating disk has only 5 or 6 faces, simply increasing the number of grating faces will make the device too large. It is not easy to overcome the influence of the airflow when the grating disk rotates at high speed. Further development of holographic imaging technology will continue.

Single Motor Table Lifting Frame

Motor lifting table frame is a kind of table frame can be controlled by motor lifting, mainly used in office, family and other occasions. According to different characteristics and uses, single motor lifting table frame can be divided into the following categories:
1. Pneumatic control type: this table needs pneumatic adjustment height, usually through the handle to achieve, suitable for the need to adjust the height of the occasion, such as office, studio and so on.
2. Single motor regulator: this table frame through a motor to control the height of the rise and fall, suitable for frequent adjustment of height occasions, such as office, home, etc.
In short, a wide variety of single motor lifting table frame, you can choose your own style according to different needs.

Single Motor Table Lifting Frame,Lifting Table Stand,Electric Lifting Table Frame,Lift Table Frame

Suzhou Herstar Medical Technology Co., Ltd. , https://www.htstandingdesk.com