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Near infrared optical lens

A near-infrared optics and lens technology, applied in the field of near-infrared lenses, can solve problems such as poor heat dissipation, poor effect, and limited environmental adaptability

Inactive Publication Date: 2015-11-25
SHENZHEN LDROBOT CO LTD
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  • Abstract
  • Description
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Problems solved by technology

Another example is the patent CN102213821A, which mentions a large aperture, large field of view and small distortion optical lens, but this lens uses a plastic lens, and its heat dissipation effect is not good, and it can only meet 5°C-50°C, and the environmental adaptability is limited.

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0027] figure 1 Shown is a schematic structural diagram of a near-infrared optical lens in an embodiment of the present invention. In this embodiment, the near-infrared optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7 and an eighth lens L8. The first to eighth lenses L1 , L2 , L3 , L4 , L5 , L6 , L7 , and L8 are sequentially arranged along the optical axis from the object ...

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Abstract

The invention discloses a near infrared optical lens. The near infrared optical lens comprises right eyeglasses successively arranged from an object side to an image side, wherein the first eyeglass is crescent-shaped, has negative focal power and has a convex surface oriented towards the object side; the second eyeglass is crescent-shaped, has negative focal power and has a convex surface oriented towards the object side; the third eyeglass is biconvex-shaped and has positive focal power; the fourth eyeglass is crescent-shaped, has positive focal power and has a convex surface oriented towards the image side; a doublet is formed by combining the fifth eyeglass with the sixth eyeglass; a seventh eyeglass is biconvex-shaped and has positive focal power; and the eighth eyeglass is crescent-shaped, has positive focal power and has a convex surface oriented towards the object side. The near infrared optical lens, through adoption of different eyeglass combinations and utilization of focal power distribution, has good performance of wide aperture, large visual angle and small distortion, and can effectively realize a heat difference elimination effect by use of a full glass structure.

Description

technical field [0001] The invention relates to a near-infrared lens, in particular to a near-infrared lens composed of eight lenses. Background technique [0002] With the development of laser lighting technology and 3D somatosensory interaction technology, the demand and application of near-infrared light sources and near-infrared optical lenses are becoming more and more extensive. The existing near-infrared optical lenses in the market are generally ordinary day and night lenses with IR, and there are very few lenses professionally used for near-infrared imaging. Such lenses have small field of view, small aperture, large distortion, and poor temperature difference effects, etc. shortcoming. For example, patent CN103197405A mentions an adiabatic near-infrared band optical lens, which has a full field of view of 5° and an aperture F number of 2.0, which belongs to a small field of view and small aperture lens. Another example is the patent CN102213821A, which mentions a...

Claims

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Application Information

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IPC IPC(8): G02B13/14G02B13/06G02B1/00
Inventor 刘洪海徐成郭盖华
Owner SHENZHEN LDROBOT CO LTD
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