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US 4,523,803 AGranted
Optical scanning device
AssigneeCanon Kabushiki Kaisha
InventorsKozo Arao, Tadashi Sato
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Abstract
A novel optical scanning device which utilizes the light integrating technique is provided. In the device, a light beam is deflected by forming a light deflecting portion and a condensing thin film lens on a thin film waveguide path and further, the deflected light is transmitted by a transmission path bundle wider in the light exit portion thereof than in the light entrance portion thereof. The device is a compact optical scanning device which can scan a wider area at high speed.
Claims5
An optical scanning device comprising:
- a substrate;
- a thin film waveguide path for propagating a light beam, said thin film waveguide path being formed on said substrate;
- a waveguide path bundle formed integrally with and of the same material as said thin film waveguide path on said substrate, each waveguide path of said waveguide path bundle having a light entrance portion and a light exit portion, and being wider in the light exit portion thereof than in the light entrance portion thereof onto which the light beam propagated in said thin film waveguide path in incident;
- first means for deflecting a light beam propagated in said thin film waveguide path;
- and
- second means for condensing a light beam deflected by said first means to guide deflected light beam onto said light entrance portion of said waveguide path bundle.
3 more elements
Dependencies are inferred from the claim text.