CN201004106Y - A novel optical lens - Google Patents

Abstract

The utility model discloses a new optical lens, comprising a lens drawtube and a first eyeglass, a veiling glade gate space ring, an infrared filter, a second eyeglass and a pressure washer which are orderly arranged in the drawtube. Compared with the prior art, the improvement is that the infrared filter is made of plastic enamel, the thickness is less than 0.1mm, and is thinner that the infrared filter which is made of glass, effectively shortening the length overall of the lens; the filter is arranged in the middle of the lens, avoiding the entry of the impurity and the dust, reducing the requirement to the appearance and the quality of the lens, and increasing the quality of the imaging; the traditional plate filter is extruded to be in arc shape through the machinery mode, effectively reducing the incident angle, solving the problem that the incident angle of the light is oversize, thereby preferably preventing the excursion of the glow cut-off wavelength, making the color of imaging even; the filter is brake forming by the extrusion of the lens, reducing the working procedures of heat-sealing or injecting, and convenient to repair of the defective products, saving the cost, reducing the reject of the production, and increasing the output.

Description

A kind of novel optical lens

Technical field

The utility model relates to a kind of optical lens structure, is applicable to the optical lens of digital photography/shooting product, is particularly useful for the optical lens that the mobile phone photographic/camera is used.

Background technology

Along with popularizing of colour screen handset, the primary requirement that the photographic/camera function of mobile phone has become most of people when buying mobile phone, and optical lens is the critical component of photographic/camera system, its camera all is fixed optical lens, fixed focal length, is made up of lens barrel, eyeglass, infrared fileter etc. usually.Optical filter in the existing optical lens is generally made by glass, and common thickness is 0.3～1.0mm, and flat optical filter can prolong light path, causes the length overall of whole camera lens long; Because general optical filter is placed on the front of sensitive chip, promptly the rearmost end of optical lens is nearer from sensitive chip, and very high to the smooth finish requirement of optical filter, some beauty defects just influences image quality a little; Because optical filter is sheet glass, the interference of tackling infrared light by plated film when the angle of incidence of light degree of optical filter is big, particularly surpasses 30 when spending, and the cutoff wavelength performance of infrared fileter will produce drift, makes the imaging irregular colour spare; And when assembling, infrared fileter is generally fixed with heat-sealing or some glue, and this not only increases production link, influences production efficiency, after heat-sealing and some glue process, can't reprocess some bad camera lenses again and utilize simultaneously, causes bigger waste.

Summary of the invention

Goal of the invention of the present utility model is to overcome the defective of prior art and a kind of effective shortening camera lens length overall is provided, reduces that the camera lens presentation quality requires, improves image quality, prevents the IR-cut wave length shift, cost-effective a kind of novel optical lens.

Goal of the invention of the present utility model reaches by the following technical programs:

A kind of novel optical lens, comprise lens barrel, be located at eyeglass one, eyeglass two and infrared fileter in the lens barrel, it is characterized in that described infrared fileter is arranged between the optical lens middle eyeglass one and eyeglass two, and be bent to form arc by eliminate stray light spacer ring and the mechanical presses power that is located at the trim ring outside the eyeglass two.

Described infrared fileter is made of plastics, and thickness is less than 0.1mm.

Compared with prior art, advantage of the present utility model is: 1. infrared fileter adopts plastic material, and thickness is less than 0.1mm, the thin thickness of making than glass many, can effectively shorten the length overall of camera lens; 2. optical filter is placed in the middle of the camera lens, has avoided entering of impurity and dust, reduces the requirement of camera lens presentation quality, improves image quality; 3. it is curved that traditional dull and stereotyped optical filter pushes crooked back mechanically, effectively reduces incident angle, thereby better prevent the drift of ruddiness cutoff wavelength, makes the imaging color even; 4. optical filter is squeezed on the eliminate stray light spacer ring by eyeglass and bends to camber, deducts heat-sealing or some glue process, has not only made things convenient for defective products to reprocess but also save cost, reduces product rejection, improves output.

Description of drawings

Fig. 1 is the utility model sectional structure synoptic diagram.

Fig. 2 is the utility model spatial structure exploded view.

Fig. 3 is infrared fileter squeezed state figure not in optical lens.

Fig. 4 is squeezed into bowed state figure for infrared fileter in optical lens.

Embodiment

Embodiment is described in detail the utility model again below with reference to accompanying drawing.

Shown in Fig. 1～2, a kind of novel optical lens, it comprises lens barrel 1, and the eyeglass 1 with the lens barrel transition fit is installed in the lens barrel successively; Eliminate stray light spacer ring 3 is installed in the eyeglass one with clearance fit, its role is to eliminate veiling glare and make infrared fileter 4 form arc, therefore, the eliminate stray light spacer ring contacts one side and is arcuate structure with infrared fileter, infrared fileter 4 adopts the MOF plastic material to make, thickness is less than 0.1mm, its effect is the light that blocks infrared band, reduces incident angle, effectively prevents drift, because thickness is little, than the Bao Deduo of glass, can effectively shorten the length overall of camera lens, because infrared fileter is in the centre position of camera lens, both avoided entering of impurity and dust, reduced requirement, again because of far away, even there are some defects on the surface from sensitive chip to its presentation quality, can not influence image quality, as shadow etc. yet; Eyeglass 25 then is installed, eyeglass two and eyeglass one interference fit, with the lens barrel clearance fit; The eyeglass two outer trim rings 6 of installing, the little clearance fit of trim ring and lens barrel, gap value 0.01～0.02mm, so far, each components and parts installs.

Shown in Fig. 3～4, after making, infrared fileter 4 is tabular, in the installation process when not being subjected to the extruding force of trim ring 6, still be tabular, when trim ring 6 extruding eyeglasses 25 when contacting with eyeglass 1, infrared fileter 4 is squeezed and bends to arc, so just can effectively reduce the incident angle of optical filter, thereby can better prevent the drift of ruddiness cutoff wavelength, make the imaging color even.

Claims (2)

1, a kind of novel optical lens, comprise lens barrel (1), be located at eyeglass one (2), eyeglass two (5) and infrared fileter (4) in the lens barrel, it is characterized in that described infrared fileter (4) is arranged between eyeglass one (2) and the eyeglass two (5) in the middle of the optical lens, and be bent to form arc by eliminate stray light spacer ring (3) and the mechanical presses power that is located at eyeglass two (5) trim ring (6) outward.

2, a kind of novel optical lens according to claim 1 is characterized in that described infrared fileter (4) is made of plastics, and thickness is less than 0.1mm.

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