"Shuangfeiyan" seems to have experienced an asset reorganization, and I don't know where the patent of Needle Light went.
However, some photos can help you distinguish them.
First, the needle light mouse.
Needle lamp mouse
Product features:
1. The words "Needle Light Mouse" will be displayed directly in the label.
2. Use the "needle module", that is, a particularly small hole as the laser transmitting and receiving end.
3. Copyright of independent research and development in China.
Advantages:
Nowadays, with the rapid development of the mouse, there is only one advantage left, "any surface can be used".
Disadvantages:
Shuangfeiyan monopolized the product line, which was dismantled due to insufficient funds.
Compared with the current ordinary optical mouse, the whole hardware is relatively backward because the hardware part of "needle light" is no longer iterative, but it is also the only solution that can be used on any surface.
Second, ordinary oblique diffuse reflection photoelectric mouse.
optical mouse
Product features:
The "Needle Mouse" label has been deleted.
Replace "needle module" with "inclined diffuse reflection module". Because oblique lighting needs to keep the incident angle of about 25 degrees, the laser module is changed from hole to square-like module.
American copyright.
Advantages:
The product line adopts American standard, which greatly reduces the hardware cost. No need for self-research and maintenance of production line.
Convergence with other mice, but by reducing the configuration, it is easier to fight price wars.
High-end products can be sold more expensive. It can be updated iteratively in time.
Disadvantages:
The low-end version must use a "mouse pad" or on a special surface to work properly. In order to achieve "any surface can be used", it is generally achieved with a higher refresh rate. However, its price is far more expensive than the "needle light mouse". Even so, it is not "everything can be used".
Sometimes frame skipping occurs, so the high-end version and the low-end version are separated. Its essence is only that the patent fee and hardware cost authorized from the United States are different.
Finally, with the continuous suppression of China by the United States and the fierce competition in China, domestic products have had a hard time in recent years, gradually giving up independent research and development and relying on American technology. The technology of "Needle Light Mouse", like "Huawei Kirin Chip", was originally an invention that could lead China to the world level, thus avoiding paying patent fees to the United States. Everyone is also looking forward to the return of real domestic stylus and mouse technology, but as far as the current financial form is concerned, it is still far away.
If you are lucky enough, you have obtained a "needle-light mouse" before, even if it is worn out, it is recommended to collect it. This is a wonderful witness. ...