Module Or Discrete?

Jan. 19, 2006
Beyond the basic image sensor, manufacturers of imaging chips often provide value-added solutions in the form of complete camera modules (see the figure). These modules contain the imaging chip, a fixed- or adjustable-focus lens, and sometimes additional

Beyond the basic image sensor, manufacturers of imaging chips often provide value-added solutions in the form of complete camera modules (see the figure). These modules contain the imaging chip, a fixed- or adjustable-focus lens, and sometimes additional image processing, flash control, and auto-focus circuitry. Camera modules also come from independent companies that specialize in the low-cost assembly and manufacturing of products for the mass market.

These modules present a challenge because the most critical specification after price tends to be size. All three dimensions must be as small as possible so placing the module inside the cell phone doesn't cause an increase in the cell phone's size.

Fixed-focus lenses offer the lowest cost and most compact solution, but they don't deliver the sharpest image. Other focus schemes include the use of a voice-coil-based electromagnetic system or a piezoelectric scheme, since the focus adjustment distance is a small fraction of a millimeter. A more novel approach emerging from research labs uses a liquid-based lens that can be focused using a form of electrostatic deflection, eliminating all moving parts. Such liquid lenses promise better reliability while further shrinking the height of the lens assembly.

Sponsored Recommendations

Highly Integrated 20A Digital Power Module for High Current Applications

March 20, 2024
Renesas latest power module delivers the highest efficiency (up to 94% peak) and fast time-to-market solution in an extremely small footprint. The RRM12120 is ideal for space...

Empowering Innovation: Your Power Partner for Tomorrow's Challenges

March 20, 2024
Discover how innovation, quality, and reliability are embedded into every aspect of Renesas' power products.

Article: Meeting the challenges of power conversion in e-bikes

March 18, 2024
Managing electrical noise in a compact and lightweight vehicle is a perpetual obstacle

Power modules provide high-efficiency conversion between 400V and 800V systems for electric vehicles

March 18, 2024
Porsche, Hyundai and GMC all are converting 400 – 800V today in very different ways. Learn more about how power modules stack up to these discrete designs.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!