Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 22, 2022
Patent Application Number
16457124
Date Filed
June 28, 2019
Patent Citations Received
Patent Primary Examiner
An illumination optical system includes a diffusion element that diffuses illumination light entering from a light source, the diffusion element emitting the illumination light. The diffusion element is formed by dispersing fine particles of at least one kind in a homogeneous medium that is made of a material different from the fine particles, and the diffusion element satisfies a specific conditional expressions.
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