DE1912007U - LUMINAIRE, PREFERRED LIGHT FLOODERS, FOR A LINE-SHAPED LIGHT SOURCE. - Google Patents

Description

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L Lange, December 7, 1962 * rner-von-Siemens-Str. 50

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/ I 62/1906

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t. ne & m ^ niri ι _it ^ ₁ iegelreflektors liefit. for

g za ¹ * Poraj " ₆ c xi · ■» rteilungskurve iier, t Jn ^ a ^ αη ^ η, - ^ re> ^ **, * cadliniger, equal

Sniegel with ^ B. Orirduclip i. u cross section that is parallel

aar umeniorr, te tquelle arranged is ⁺ . When

iun defense e LiCh ⁺ ι arc lamp ηα »» τ- fine Qi

density like a xenon lamp in the field of vision of one

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* ^ fe

± ΊιΑ ö ^ / ι y where

If a person, e.g. a spectator, is lying in an illuminated stadium, glare can occur. Decisive for the size of the Glare is the product of luminance and glare area. for certain observation points that are in the adjustment range of the lamp, preferably a floodlight, are the entire facing surface of the linear light source and their image on the mirror reflector in the field of vision of the observer and generate strong glare, as all reflector cross-sections have the same main radiation direction.

According to the invention, an improvement is achieved in that the mirror reflector is the same along its entire longitudinal axis Reflector-generating in cross-sections perpendicular to the lamp axis has different main radiation directions, these Cross-sections either arranged directly next to one another or at small distances from one another in relation to the reflector length are. In the case of the lamp according to the invention, the glare is avoided or reduced in that only some of the linear ones Sources of glare lie in the observer's field of vision, while the main directions of radiation of neighboring sub-areas this observer not meet. The reduction of the glare with constant luminance is due to the substantial reduction of the glare area achieved. The light exit angle remains unchanged over the entire length of the reflector. The lamp according to the invention with its elongated reflector and the linear light source acts in terms of glare in the same way as several point-like light sources arranged directly next to one another with bell-like mirrors that are set differently.

-2- Stu / Al

PLA 62/1906

Main directions of radiation adhere. In this case, only one observer is dazzled Mirror reflector with a relatively small glare area.

In the drawing, two exemplary embodiments of the invention are shown, with only the lighting components required for understanding are shown. Show it;

Figure 1 is a perspective view of one along one Helical deformed mirror reflector with an 'associated linear light source,

Fig. 2 is a plan view of the object of Fig. 1,

3 is a perspective view of one of the offset elements existing mirror reflector with a rod-shaped Lamp and

FIG. 4 is a plan view of the object of FIG. 3.

In Fig. Ί is of the lamp according to the invention, which is used as a floodlight is formed, only a channel-like mirror reflector 1 shown, which can have a geometrically-optically defined shape, with a line-shaped light source 3 approximately in the focal line of this Reflector 1 is to be arranged. As a linear light source 3 A high-performance lamp can be used, in particular a xenon long-arc lamp or a quartz-iodine incandescent lamp.

According to the invention, the mirror reflector 1 has a constant, invariable reflector generating along its entire length 2 and in cross-sections perpendicular to the lamp axis a, different main radiation directions H, these cross-sections being un-

-3- Stu / Al

can be arranged indirectly next to one another. Drawn in is in Figures 1 and 2 the main radiation seal Ή

for the initial cross-section, the main radiation direction H for the end cross-section and the main radiation direction H for any cross section located near the center of the mirror reflector 1. It goes without saying that these are three Arbitrarily chosen cross-sections not around the cross-sections defined according to the invention and arranged directly next to one another.

The mirror reflector 1 is expedient by a continuous, helical movement of a generator 2 serving Parabola shaped along the lamp axis a. Instead of this parabola, an ellipse can also be used as the generating line.

3ei the lamp according to Figures 3 and 4 are according to the invention the cross-sections marked by different main radiation directions H are not arranged directly next to one another, but at distances b, which are small in relation to the reflector length 1. HL, Hp and H ~ are the main directions of discharge the first three cross sections of the mirror reflector 12. This mirror reflector 10 is advantageous because of a step-shaped interrupted, helical movement of a parabola 1'2 along the lamp axis a. The mirror reflector is expedient 10 composed of mirror elements 11 that extend transversely to the lamp axis a and are offset in steps. Preferably are these mirror elements 11 with regard to a reference point B which is half the length of the mirror reflector 10 is located, offset in the opposite sense. However, there can also be a shift in the same sense.

-4- Stu / Al

62/1505 f

The main emission directions H ₁ , Hp and H ^ apply at the same time to the first three mirror elements 11, which have the width b. The generating line 12 is initially shifted from its initial position over the length b parallel to itself and has the main radiation direction H ₁ over this length b. The generatrix 12 is then rotated by a small amount and then shifted again parallel to itself over the length b. In the second mirror element 11, the main radiation direction is denoted by • Hp. The main directions of emission H ₁ and Hp are parallel to one another in space and form a small angle with one another. This alternating parallel displacement and rotation described is repeated over the entire length 1 of the mirror reflector 10, the direction of rotation being able to be constant or variable.

4 claims
4 figures

-5- Stu / Al

Claims (4)

PLA 62/1906 a s ρ r ü c h e 1. Luminaire, preferably floodlight, for a linear one Light source, in particular a xenon long arc lamp or a quartz iodine incandescent lamp, which lies approximately in the focal line of a trough-like mirror reflector, characterized in that, that the mirror reflector (1, 10) "with the same reflector generating (2, 12) along its entire longitudinal axis in to the lamp axis (a) perpendicular cross-sections has different main radiation directions (H), these cross-sections either directly next to each other or in relation to the reflection length (l) small distances (b) from each other are arranged. 2. Lamp according to claim 1, characterized in that; that the mirror reflector (2 or * 12) is _{shaped by a continuous}} schrav.b311- ■ linear or a stepped interrupted screw ™ linear movement of a parabola (2, 12) or an ellipse along the lamp axis (a), 3. Lamp according to claim 1, characterized in that the Spie ™ gel reflector (12) made of extending transversely to the lamp axis (a), there is stepped offset mirror elements (11). 4. in light according to Claim 3 »characterized _s that the mirror elements (11) are offset of the mirror reflector (12) with respect to an in half its length located reference point (3) in the same or in the opposite sense, Stu / Al