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US 11,079,516 B2Granted
Optical device, image reading device, and image forming apparatus
AssigneeFUJIFILM Business Innovation Corp.
InventorMasaki Hachisuga
Life of this patent
Estimating the term…
Abstract
An optical device includes: a lens member including a plurality of lenses arranged such that optical axes of the lenses are substantially parallel to one another; and a light-transmitting member including: at least one light-transmitting part that is disposed to face the lens member, positioned on the optical axis of some of the plurality of lenses, and transmits light; and a light-shielding part that is provided on a surface of the light-transmitting part and blocks passage of light.
Claims17
An optical device comprising:
- a lens member including a plurality of lenses arranged such that optical axes of the lenses are substantially parallel to one another;
- and
- a light-transmitting member including:
- at least one light-transmitting part that is disposed to face the lens member, positioned on the optical axis of some of the plurality of lenses, and transmits light;
- and a light-shielding part that is provided on a surface of the light-transmitting part and blocks passage of light, wherein
- the light-shielding part is provided between the lenses among the plurality of lenses,
- the some of the lenses are positioned at predetermined intervals among the plurality of lenses,
- a space is formed between a plurality of the light-transmitting parts and positioned on the optical axis of another lens than the some of the plurality of lenses,
- the light-transmitting member includes a plurality of other light-transmitting parts that transmit light to a position different from the space in a direction along the optical axis of the another lens,
- another space is formed between the other light-transmitting parts among the plurality of other light-transmitting parts at a position along the optical axis of the some of the lenses, and
- the plurality of other light-transmitting parts each have a portion continuous with any one of the plurality of light-transmitting parts in an arrangement direction of the plurality of lenses.
8 more elements
An optical device comprising:
- a lens member including a plurality of lenses arranged such that optical axes of the lenses are substantially parallel to one another;
- and
- a light-transmitting member including:
- at least one light-transmitting part that is disposed to face the lens member, positioned on the optical axis of some of the plurality of lenses, and transmits light;
- and a light-shielding part that is provided on a surface of the light-transmitting part and blocks passage of light, wherein
- the plurality of lenses are arranged in a first row and a second row substantially parallel to each other, and
- the light-transmitting member includes:
- a first light-transmitting member having:
- a first base that is provided, at a position shifted from the optical axis of the lens in the first row, along an arrangement direction in which the lenses in the first row are arranged;
- and a plurality of first light-transmitting parts that project from the first base in an intersection direction intersecting the arrangement direction and are positioned on the optical axes of the lenses in the first row;
- and
- a second light-transmitting member having:
- a second base that is provided, at a position shifted from the optical axis of the lens in the second row, along the arrangement direction on a side opposite to the first base with the lens of the first row and the lens of the second row interposed therebetween, and a plurality of second light-transmitting parts that project from the second base in the intersection direction and are positioned on the optical axes of the lenses in the second row.
10 more elements
An image reading device comprising:
- an irradiation section that irradiates a document with light;
- two lens members both including a plurality of lenses that are arranged such that optical axes of the lenses are substantially parallel to one another and through which light reflected from the document passes;
- a light-transmitting member having:
- at least one light-transmitting part that is disposed to face one of the two lens members, positioned on the optical axis of some of the plurality of lenses, and transmits light;
- and
- a light-shielding part that is provided on a surface of the light-transmitting part and blocks passage of light;
- and
- a light receiving section that receives light passing through the plurality of lenses,
- wherein the at least one light-transmitting part is a physical element, and
- wherein the light-transmitting member, the two lens members and the light receiving section are arranged along a direction of the optical axes so that the two lens members are between the light transmitting member and the light receiving section.
7 more elements
An image forming apparatus comprising:
- an irradiation section that irradiates a document with light;
- two lens members including a plurality of lenses that are arranged such that optical axes of the lenses are substantially parallel to one another and through which light reflected from the document passes;
- a light-transmitting member having:
- at least one light-transmitting part that is disposed to face one of the two lens members, positioned on the optical axis of some of the plurality of lenses, and transmits light;
- and
- a light-shielding part that is provided on a surface of the light-transmitting part and blocks passage of light;
- a light receiving section that receives light passing through the plurality of lenses;
- and
- an image forming section that forms an image based on light received by the light receiving section,
- wherein the at least one light-transmitting part is a physical element, and
- wherein the light-transmitting member, the two lens members and the light receiving section are arranged along a direction of the optical axes so that the two lens members are between the light transmitting member and the light receiving section.
8 more elements
Dependencies are inferred from the claim text.