DE19919144A1 - Cylindrical annular optical lens, is illuminated from above with light source forming projection focal point beneath lens, whereby light source is broken up into radial light circles - Google Patents

Abstract

The lens (1) represents a dual, curved annular optical lens in a radial sectional view. If the optical lens is illuminated from above with a light source (2), the projection focal point of the light source forms at a point beneath the lens, whereby the light source is broken up into radial light circles.

Description

The present invention relates to a cylindrical ring-shaped optical lens, in particular an optical lens, through the radial circles of light with a special effect can be produced and that in combination with others Lenses or objects can be used.

The optical lens 1 according to the prior art, regardless of whether it is a concave lens or a convex lens, has a focal point with a virtual or real image, as a result of which optical lenses or apparatuses are produced for various purposes. However, the conventional lenses (apart from the virtual image produced by concave lenses) can only get a point-like focus for use on all types of devices. Even the barcode scanner has to be equipped with a series of light bulbs, the focusing being carried out by means of a semi-cylindrical convex lens. A line-like cross-scanning light beam can be obtained by the foci created by light bulbs accumulating. Therefore, the use of conventional convex lenses in the optical field is always only the use of point-like focusing. This should be overcome.

The invention has for its object a cylindrical to provide annular optical lens through which it can be overcome that the application of the convex lens is not just the use of point-like focusing, but also a single light source gets continuous circular focusing light circles.

This object is achieved by a cylindrical ring-shaped optical lens that the in the Features specified features 1, wherein the lens according to the invention in a radial sectional view represents double-sided curved, ring-shaped optical lens,  which looks like a Berlin pancake in general. Becomes the optical lens from above with a light source appears, the projection focus of the Light source at a location under the optical lens, where the light source is broken into radial circles of light.

Due to the above-mentioned design, the present Invention besides point-like focusing ring-shaped Focus circles get to one of conventional lenses to achieve unattainable, special effect and Expand the scope of the optical lens.

Other features and advantages of the present invention become clear upon reading the following description of a preferred embodiment which is attached to the Reference to drawings; show it:

Fig. 1 is a perspective view of an embodiment of the present invention;

Fig. 2 is a sectional view of the present invention; and

Fig. 3 is a schematic representation of the present invention when used on a writing instrument.

As shown in FIGS. 1 and 2, the lens according to the invention in a radial sectional view represents a double-sided curved, ring-shaped optical lens 1 which is similar to that which consists of two semicircular convex lenses, with an overall view similar to a Berlin pancake. If the optical lens 1 is illuminated from above with a light source 2 , the projection focal point of the light source 2 collects at a point below the optical lens 1 , the light source 2 being broken into radial circles of light, as a result of which the light source 2 is passed on through a transparent pin 7 and thus creates a source of illumination at the front end.

As a result of the aforementioned design, the present invention can be provided with ring-shaped focusing circles 4 in addition to point-like focusing in order to achieve a special effect which is unattainable by conventional lenses and to expand the field of application of the optical lens 1 .

As shown in FIG. 3, the assembly of the present invention takes place in such a way that the lens 1 according to the invention is provided inside a writing instrument 5 provided with a light source, the light bulb 6 being attached directly behind the center of the optical lens 1 , to the latter There is a transparent writing tube 7 at the front end, so that when the above light bulb 6 shines, the radially delimited light focus circle 4 , as shown in FIG. 1, passes directly to the upper end of the transparent writing tube 7 , the light through the lens being transparent Writing tube 7 is bent. The above light is then evaded by means of the light conductivity of the transparent writing tube 7 of the refill 8 and is forwarded to the foremost end of the writing instrument 5 in order to be able to effectively guarantee illumination at the tip of the refill.

The curvature of the double-sided curved, ring-shaped optical lens 1 can change the angle of refraction of the projection source at this optical lens 1 in order to change the area of the light circle.

The invention is not based on the described Embodiment limited, rather arise for the Specialist in the context of the invention diverse modification and Modification options. In particular, the Scope of the invention defined by the claim.  

Reference list

1

optical lens

2nd

Light source

3rd

Refractive light beam

4

Focusing circle

5

Writing instrument

6

Light bulb

7

clear writing tube

8th

mine

Claims (1)

1. Cylindrical annular optical lens, which is a double-sided curved, circular optical lens ( 1 ) in a radial sectional view, characterized in that when the optical lens ( 1 ) is illuminated from above with a light source ( 2 ), the Projection focus of the light source ( 2 ) collects at a location under the optical lens ( 1 ), the light source ( 2 ) being broken into radial circles of light.