Paper
30 September 2013 Miniaturized optical fiber endoscope without inertial scan for simultaneous imaging and laser microsurgery
Author Affiliations +
Abstract
The current autostereoscopic projection system is accomplished by array projectors. It is easy to realize optically but has a drawback with size. Another type is to place the shutter on the screen. It saves the volume but reduces the efficiency depending on how many views are produced. The shutter in the lens aperture has the same efficiency problem, too. To overcome these problems, a full HD autostereoscopic projector based on the lens aperture switching type is proposed. It has RGB laser sources and can produce 16-views or even higher stereoscopic images. This system removes the shutter in the lens aperture by the opti-mechanism itself. The specific light on the lens aperture coming from the point on the DMD is reflected to different angles. The proper angle of light is generated in the object side by the relay and folding system. The UHP lamps or the LED rays are difficult to constrain in a relative small cone angle. For this reason, the laser is applied to the design. The very small etendue of the laser is good for this architecture. The rays are combined by dichroic filter from RGB laser sources then forming and expanding to the mirror. The mirror is synchronized with DMD by the DSP control system. The images of different views are generated by DMD and specific position of the mirror. By the double lenticular screen, the lens aperture is imaged to the observer’s viewing zone and the 3D scene is created.
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Jost Adam, Philipp Metz, Martina Gerken, and Bahram Jalali "Miniaturized optical fiber endoscope without inertial scan for simultaneous imaging and laser microsurgery", Proc. SPIE 8842, Novel Optical Systems Design and Optimization XVI, 884204 (30 September 2013); https://doi.org/10.1117/12.2023962
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KEYWORDS
Diffraction

Diffraction gratings

Optical design

Pixel resolution

Refractive index

Prisms

Gaussian beams

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