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Optical distance apparatus and light-gathering apparatus

A technology of a condensing device and a photoelectric conversion device, applied in the field of condensing lenses, can solve the problems of uneven brightness of optical imaging, mixed data, uneven light, etc., and achieve the effect of shortening the optical path, reducing the height, and increasing the image quality.

Inactive Publication Date: 2007-06-20
TECO IMAGE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The previous technology uses a cylindrical lens, so it is easy to mix the data of other rows, resulting in the deterioration of the optical resolution (Modulation Transfer Function, referred to as MTF)
[0007] 3. As shown in FIG. 3, since the known concentrating device, that is, the cross-sectional areas A1 and A2 of the cylindrical lens 17 in the vertical direction are not the same, when the light source S passes through the concentrating device 17 and is projected onto the CCD The light at 18 is also uneven, resulting in the strong incident light intensity in the middle of the charge-coupled component shown in Figure 4 and weak at both ends, which leads to uneven brightness during optical imaging

Method used

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  • Optical distance apparatus and light-gathering apparatus
  • Optical distance apparatus and light-gathering apparatus
  • Optical distance apparatus and light-gathering apparatus

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Embodiment Construction

[0061] Please refer to FIG. 5 and FIG. 6, which are respectively a perspective view and a front view of the flat light concentrating device of the present invention. The flat lens 3 is arranged in the optical path device of the optical equipment, for example, it can be an optical engine of a scanner, which has a rectangular frame 32 in section, and is a flat housing with two rectangular sides. The end is open, and a lens group 30 is disposed therein, including a plurality of rectangular lenses 34 , 36 , 38 for collecting light to form an image on a photoelectric conversion device 4 (such as a charge-coupled device). The frame 32 is made of plastic, metal or ceramic. The manufacturing method of the lenses 34, 36, 38 can be molded, or obtained by cutting glass lenses, but the cost is too high. The present invention suggests that they can be made of plastic materials by more precise plastic injection, so that they can be made at a lower cost. Manufacturing at a low cost, this pr...

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Abstract

The present invention relates to one kind one light path device and its light converging unit. The light converging unit of the light path device includes one frame with rectangular openings on two ends and several lenses set inside the frame. The light path device for optical equipment includes one light source unit providing required light, one reflecting unit with at least one reflector to reflect light and reach preset light path length, one light converging unit to focus light beam from the reflecting unit for imaging, and one optoelectronic converting unit to convert the focused light beam into electric signal.

Description

technical field [0001] The present invention relates to an optical path device and its light-gathering device, in particular to a flat-shaped light-gathering lens used in business machines (such as scanners or copiers) to gather light reflected by manuscripts and image them on a on the photoelectric conversion device. Background technique [0002] The image imaging principle of a general image reading device is to use an optical path device (generally also called an optical engine) to reflect the light multiple times, and then collect the image through a light concentrating device (usually a lens). Then a photoelectric conversion device converts the light signal into an electrical signal for processing and storage by an electronic device (the photoelectric conversion device currently uses a charge coupled device (Charge Coupled Device, referred to as CCD), and also uses a complementary metal oxide semiconductor (ComplementaryMetal- Oxide Semiconductor, referred to as COMS))...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/00G02B26/10G02B13/18H04N1/028G06K7/10
Inventor 李彭荣
Owner TECO IMAGE SYST