50results about How to "Large target area" patented technology

A disposable, deodorant and splash proof urine dispersing device for placement in a urinal including a framework made of scented plastic material with a horizontal segmented supporting base and a central raised housing. The supporting base includes a plurality of perforated flexible segments and a central bottom frame with a central opening aligned with an outlet or drain in the urinal. The opening is surrounded by the multiple segments such that the device can flex and adapt to urinals of different sizes and designs. The central raised housing includes a horizontal or inclined top member and an upstanding peripheral wall connecting the top member with the central bottom frame in the supporting base. The peripheral wall includes flush relief openings and tapered for easy unit stacking. The top member includes a frame with a plurality of spaced parallel rods having a unique configuration for dispersing urine flow with reduced back splashing toward the user of the urinal.

The invention discloses an infrared confocal wide-angle lens. The infrared confocal wide-angle lens comprises in order from an object side to an image side: a front lens group, a diaphragm, a rear lens group, an optical filter, protection glass and a photosensitive chip. The focal power of the front lens group is negative, and the front lens group comprises: a first lens, wherein the focal power of the front lens is negative, one surface, facing the object side, of the front lens is a convex surface, and one surface, facing the image side, of the front lens is a concave surface; a second lens,wherein the focal power of the second lens is negative, the two surfaces of the second lens are both concave surfaces; and a third lens, wherein the focal power of the third lens is positive, and thetwo surfaces of the third lens are both convex surfaces. The focal power of the rear lens group is positive, and the rear lens group comprises: a fourth lens, wherein the focal power of the fourth lens is negative, one surface, facing the object side, of the fourth lens is a convex surface, and one surface, facing the image side, of the fourth lens is a concave surface; a fifth lens, wherein thefocal power of the fifth lens is positive, and the two surfaces of the fifth lens are both convex surfaces; a sixth lens, wherein the focal power of the sixth lens is positive, and the two surfaces ofthe sixth lens are both convex surfaces; a seventh lens, wherein the focal power of the seventh lens is negative, and the two surfaces of the seventh lens are both concave surfaces; and an eighth lens, wherein the focal power of the eighth lens is positive, and the two surfaces of the eighth lens are both convex surfaces. Each lens adopts a concave-convex combined structure, and can better achieve infrared confocal.

The invention discloses a lens which is formed by sequentially arranging a first lens group, a second lens group, an aperture diaphragm, a third lens group, a fourth lens group and a light splitting device from an object side to an image side. Each light emitting side of the light splitting device sequentially comprises an optical filter and an image surface; the lens satisfies the following conditions: fG2 is the focal length of the third lens group, f is the system focal length of the lens, and FOV is the field angle of the lens. Four lens groups are sequentially arranged in the lens from the object side to the image side according to a specific sequence, the four lens groups comprise 13 lenses with specific focal power, and the lens meets the requirement that the optical lens which is high in resolution, large in target surface, large in aperture, small in size and low in cost is achieved.

The invention discloses an ultra-wide-angle fisheye lens, which comprises a lens barrel, an optical system arranged in the lens barrel, a first pressing ring, a second pressing ring and a sealing ring, and the optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens which are sequentially arranged from an object side to an image side; the focal length of each lens is reasonably configured; the first pressing ring is connected with the lens barrel and abuts against the object side face of the first lens, the second pressing ring is connected with the lens barrel and abuts against the image side face of the tenth lens, the image side face of the first lens is further provided with a first annular platform, and the sealing ring is clamped between the first annular platform and the lens barrel. According to the lens, the consistency of optical axes can be ensured, the yield and the assembly efficiency in batch production can be improved, large light flux, large target surface and large field angle can be realized, stray light ghosting is reduced, chromatic aberration is corrected, the imaging quality is improved, the lens miniaturization is facilitated, the IP67 protection grade requirement is met, and the service life is long.