Optical transmission device
AssigneeFuji Xerox Co., Ltd.
InventorsAkemi Murakami, Junichiro Hayakawa, Hideo Nakayama, Tsutomu Otsuka
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Abstract
An optical transmission device includes a first light emitting element, a second light emitting element, and a detection unit. The first light emitting element is configured to emit light. The second light emitting element is configured to emit light. The second light emitting element is connected in parallel with the first light emitting element and is configured to deteriorate earlier than the first light emitting element. The detection unit is configured to detect whether the second light emitting element is deteriorated.
Claims14
An optical transmission device comprising:
- a first light emitting element configured to emit light at a wavelength λ;
- a second light emitting element configured to emit light at the wavelength λ, the second light emitting element being connected in parallel with the first light emitting element and being configured to have a shorter expected initial service life than the first light emitting element;
- and
- a detector configured to detect whether the second light emitting element is deteriorated,
- wherein the first light emitting element and the second light emitting element have current confinement structures, and
- wherein the second light emitting element has a current confinement diameter smaller than a current confinement diameter of the first light emitting element.
An optical transmission device comprising:
- a first light emitting element configured to emit light;
- a second light emitting element configured to emit light, the second light emitting element being connected in parallel with the first light emitting element and being configured to deteriorate earlier than the first light emitting element;
- and
- a detector configured to detect whether the second light emitting element is deteriorated,
- wherein the first light emitting element and the second light emitting element have current confinement structures, and
- wherein the second light emitting element has a current confinement diameter smaller than a current confinement diameter of the first light emitting element.
Dependencies are inferred from the claim text.