Opto-magnetic recording polarization optical apparatus including a laser diode and a light absorbing film
AssigneeSony Corporation
InventorsTadashi Taniguchi, Chiaki Kojima
Life of this patent
Estimating the term…
Abstract
In an optical apparatus according to the present invention, a light-absorbing film is formed between a light-receiving element and an optical semitransparent film formed on the light-receiving element to cause the light-receiving element to partially receive incident light. In addition, in an optomagnetic recording polarization optical apparatus according to the present invention, a prism for guiding a reflected light component from an optomagnetic recording medium to a light-receiving element and the light-receiving element are arranged on the same substrate.
Claims4
An optical apparatus comprising a structure in which a plurality of light-receiving elements are mounted on a substrate, a prism mounted on said plurality of light-receiving elements, and an optical semitransparent film mounted between said light-receiving elements and said prism, and
- a light-absorbing film mounted between said light-receiving element and said optical semitransparent film.
An optical apparatus comprising a structure in which a plurality of light-receiving elements are mounted on a substrate, a prism mounted on said plurality of light-receiving elements with an adhesive layer, an optical semitransparent film and
- a light-absorbing film mounted between said light-receiving element and said optical semitransparent film.
An optical apparatus comprising a structure in which a plurality of light-receiving elements are mounted on a substrate, a prism mounted on said plurality of light-receiving elements with an adhesive layer, an optical semitransparent film mounted between at least one of said light-receiving elements and said prism, and
- said adhesive layer which is interposed between said light-receiving elements and said optical semitransparent film is light absorbent.
Dependencies are inferred from the claim text.