Light source apparatus
A technology of light source device and optical axis, applied in the direction of light source, electric light source, printing device, etc., can solve the problem of low light utilization efficiency and achieve the effect of high light utilization
Active Publication Date: 2013-05-08
USHIO DENKI KK
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the area portion formed by only one of the light from the light guide and the reflected light from the reflector in the high-illuminance illumination area R1, since only one side or the other side of the document reading axis is irradiated, Therefore, if there is unevenness on one side of the original 2, shadows will appear. Therefore, as the effective illumination area R2 for reading the original, only the light from one side of the original reading axis can be used. The area where the illuminated area formed by the light from the light guide overlaps with the illuminated area formed by the reflected light from the mirror irradiated from the other side of the document reading axis, and the area that cannot be used as the effective illuminated area R2 Partially occupies 1 / 2 of the illuminated area formed by the light from the light guide and the illuminated area formed by the reflected light from the reflector, so there is a problem of low light utilization efficiency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
experiment example 1
[0112] Using a white LED as a light-emitting element, using the following conditions, the production figure 1 The light source device A shown.
[0113] The material of light guide body 10 is acrylic resin, and its total length is 340mm, and the radius of the arc that forms light exit surface 11 is 2.8mm, and the width of first light reflection surface 12 is 1.0mm, and the width of second light reflection surface 13 The width is 1.0mm.
[0114] The first reflecting mirror 20 and the second reflecting mirror 25 are elongated rectangular planar mirrors respectively, the vertical and horizontal dimensions of the first reflecting mirror 20 are 5.2mm×360mm, and the vertical and horizontal dimensions of the second reflecting mirror 25 are 2.8mm×360mm.
[0115] Light was irradiated from the light source device A to the document loading surface 1 separated by 8 mm in the vertical direction from the light guide body 10, and the illuminance distribution in the sub-scanning direction wa...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A light source apparatus that is used in a document reading apparatus that reads document-reflecting light from the document includes a first reflection mirror; a second reflection mirror; and a light guiding member that comprises a light emitting element mounted to one longitudinal end of the light guiding member and a light emitting face in a longitudinal direction, where the first and second reflection mirrors are arranged in parallel to the light guiding member and reflect light from the light emitting face of light guiding member toward a document placement face and where an end point of an optical axis of a first light reflection face is located on the document placement face between an end point of an optical axis of the first reflection mirror and an end point of an optical axis of the second reflection, mirror.
Description
technical field [0001] The present invention relates to a light source device for reading originals used in equipment such as facsimile machines, copiers, and scanners. Background technique [0002] Equipment such as facsimile machines, copiers, and scanners has a document reading device that uses reflected light from the document surface to read text and image information on the document surface, and a light source device that illuminates the document surface is mounted on the document reading device . [0003] As such a light source device, a device comprising a rod-shaped light guide body and a reflector is known, wherein a light-emitting element is arranged at one end of the rod-shaped light guide body, and the reflector is arranged in parallel with the light guide body (refer to Patent No. Literature 1). [0004] Figure 12 It is an explanatory cross-sectional view showing the structure of a main part of an example of a conventional light source device mounted on a do...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G03B27/54H04N1/04G06K9/20F21S8/00F21Y101/02
CPCF21V7/07H04N1/02835H04N1/02815H04N1/02895H04N1/0285H04N1/02825H04N1/02855H04N1/02865H04N1/1017H04N1/1013H04N1/193H04N1/00H04N1/04G02B6/0001
Inventor 井上正树盐崎优龟井宏市
Owner USHIO DENKI KK