Glued lens, also known as achromatic lens, is formed by gluing two single lenses. The performance of multi-color (white light) imaging is much higher than that of single lens. Achromatic lenses are glued together by two lenses with different materials to correct the dispersion of the glass. The achromatic lens has been widely used in multi-color lighting and imaging, and the cost-effectiveness is improved.
Achromatic Lens,Achromatic Lens Optical,Positive Achromatic Lens,Negetive Achromatic Lens Hanzhong Hengpu Photoelectric Technology Co.,Ltd , https://www.hplenses.com
The BenQ Pocket Projector GP1 is a device that delivers the ultimate digital lifestyle, targeting a range of mobile commerce, early childhood education and personal entertainment users. As the first LED projector of BenQ, GP1 surpasses traditional projectors with its exquisite shape, ultra-light weight of 0.64kg and long life of 20,000 hours.
BenQ GP1 fuselage uses piano paint process and touch-sensitive control panel, highlighting modern technology and fashion charm, the whole machine weighs only 640g, very easy to carry around. In terms of performance, it uses a 0.48? MD chip with 858 × 600 resolution, 100 lumens brightness and 2000:1 contrast ratio, and can project 50? at the distance of 2 meters.
The GP1 has a built-in 2W speaker and comes with a two-to-two cable for common composite video and D-sub interfaces. At the same time, the USB interface has been specially added, and the JPG pictures and video files in the U disk can be directly played, and the PC-free presentation is realized. In addition, the iPod/iPhone dedicated connector will be introduced later. 
BenQ's first LED handheld projector is available in Japan
BenQ's first LED handheld projector, GP1, will be officially launched in the Japanese market on June 12 after it was released in the domestic market last month. The estimated selling price is about RMB 5,000, which is basically the same as the domestic market price of 4,888 yuan.