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. . Ultraminiature Two-Wavelength Integrated Laser Coupler Devices for Car DVD and CD Players SLK3202RE To respond to the requirements of car DVD players, car navigation systems, and car CD changers, Sony has now developed the SLK3202RE integrated optical device (laser coupler) that is the core component in the DVD/CD player pickup. By adopting the industry's first pulsation laser that guarantees operation at 85ºC to obviate the need for high-frequency superposition and incorporating circularly polarized emitting technology, this device can simplify the optical pickup used for DVD and CD playback.

SLK3202RE . . * Monolithic two-wavelength laser operates at 85ºC and does not require high-frequency superposition * Supports ultraminiature thin form factor two-wavelength pickups * Uses the same servo technique as existing pickups * Supports 8x speed for both DVD and CD * Circularly polarized emitting for high playability     Monolithic Two-Wavelength Laser Operates at 85ºC This device includes the industry's first pulsation laser that guarantees operation at 85ºC. Furthermore, no high-frequency module is required, obviating the need for spurious radiation prevention measures. This device achieves low noise over a wide operating temperature range and high reliability. Supports Miniature Thin Form Factor Two-Wavelength Pickups The SLK3202RE features the ultraminiature size of 7.6 x 3.7 x 6.35 mm, and can easily be mounted in thin form pickups. Circularly Polarized Emitting for High Playability The SLK3202RE provides a circularly polarized beam by using a low cost built-in 1/4 wavelength plate. Using an unpolarized optical system for the internal optical system makes the SLK3202RE immune to variations in disc refraction and other problems and allows optical pickups with high playability to be implemented. At the same time, this increases stability with respect to returning light even further. Supports 8x Speed for both DVD and CD The SLK3202RE supports 8x speed for both DVD and CD by achieving a 110 MHz bandwidth on the DVD side and a 40 MHz bandwidth on the CD side. Furthermore, it responds to needs to support both single and two-layer DVD discs, and both normal and low-reflective CD discs by providing an internal two-level gain switching function in the PDIC. Miniature 18-Pin Ceramic Package The SLK3202RE adopts the same size miniature thin form factor ceramic package used in Sony's MD laser couplers, devices with a proven track record. This allows it to support further miniaturization and lower costs in end products.     •••• Mr.INAGAKI•••• Laser couplers are integrated optical devices implemented using ultrahigh precision semiconductor mounting technologies. By modularization, miniaturization, and integration of the required structural components in the optical pickup, Sony was able to simplify the structural components in the pickup. We achieved even further miniaturization in the SLK3202RE, under the assumption that it will be used in a wide range of car DVD and CD products. I hope that many of our customers will be able to take advantage of this impressive product. See all articles with figures and tables. Vol.35

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