CN202854473U - Reflecting type pinhole photography lens - Google Patents

Abstract

Provided is a reflecting type pinhole photography lens, comprising a pinhole and a curved surface reflector, wherein the pinhole is located upon a baffle plate in front of the curved surface reflector; and the curved surface reflector redirects the light entering from the pinhole and converges the light to an image sensor of a digital camera (or a built-in imaging system) for shooting digital pinhole photographs.

Description

Reflective pinhole photographic lens

Technical field

The utility model relates to a kind of novel pinhole photographic lens, cooperates digital camera to use or built-in digital image-forming module, can directly take with great visual angle digital pin hole photo.

Background technology

Pin-hole imaging is a kind of ancient Imaging, pinhole camera have unique large depth of field, with great visual angle, dim imaging, strongly but not distortion of perspective, the natural characteristic such as angle secretly, deeply pursued professional photographer and the shutterbugs' of unique imaging effect and artistic environment favor.

Carry out at present the pinhole photography creation, mainly still use film that the pin hole image is directly exposed, exist the predicament of finding a view, long processing period, exposure control difficulty, expense high, can not see the shortcoming such as effect when taking at once, and at present, no matter be works modification, storage or printing and publishing, all need digitized video, it is digital photograph that the pin hole photo of film photographic finally still needs by scanning, the electricity technical change that grades.

Reequip although also can lead to the logarithmic code camera, directly carry out pinhole photography with digital camera, the image area sensor of existing digital camera is too little, and the visual angle is restricted, and is difficult to present the perfect effect of pinhole photography.If adopt picture of large image scale sensor production pinhole camera, not only then cost is very expensive, and because the restriction of imageing sensor sensitization mode is not good for the light photosensitive property of large incident angle, causes the image quality of image field periphery not good.

Summary of the invention

In order to solve the deficiency of existing pinhole camera, take digital pin hole photo with lower cost, the utility model provides a kind of novel pinhole photographic lens, cooperates existing digital camera to use, or built-in digital image-forming module, can take the shooting effect of similar large format film pinhole camera.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of reflective pinhole photographic lens, formed by pin hole and curved reflector, pin hole is positioned on the front baffle plate of curved reflector, curved reflector will again alter course from the light that pin hole is injected and converge, it is projected on the imageing sensor with set angle, thereby take digital pin hole image.The discontinuous surfaces that the curved reflector here is comprised of micro reflector array.

The beneficial effects of the utility model are: use this device, but under the intense light irradiation condition live view, can accurately control exposure, obtain immediately digital photograph after the shooting, understand shooting effect, in the use procedure without material consumption, the cheap and environmental protection of expense.Owing to make light arrive at imageing sensor with less incident angle, image quality increases.

Description of drawings: Fig. 1 is the light path principle synoptic diagram that the utility model cooperates with existing digital camera fuselage.

Fig. 2 is the light path principle synoptic diagram of the built-in imaging system of the utility model.Among the figure: the 1-incident light; The 2-pin hole; The 3-front apron; The 4-unthreaded hole; 5-imageing sensor (CCD/CMOS); 6-curved reflector (micro reflector array); The signal of 7-micro-reflector minute surface.

Embodiment:

In Fig. 1, front apron 3, curved reflector 6 form a lucifuge magazine, pin hole 2 is positioned on the front apron, from the light 1 of object, through needle passing hole 2, project on the curved reflector 6, catoptron is with the changed course of light rule, and light projects with less incident angle on the imageing sensor 5 of camera by unthreaded hole 4, with the shutter control exposure of camera, take into digital pin hole photo.

In example shown in Figure 2, front apron 3, curved reflector 6 forms a lucifuge magazine, and pin hole 2 is positioned on the front apron, projects on the curved reflector 6 through needle passing hole 2 from the light 1 of subject, catoptron projects photosensitive imaging on the imageing sensor 5 with the changed course of light rule.

Because conventional curved reflector is difficult to satisfy this device to the demand for control of radiation direction, the discontinuous surfaces catoptron that catoptron 6 adopts micro reflector array to form, the minute surface direction of micro-reflector is shown in micro-reflector minute surface signal 7.

Claims (3)

1. a reflective pinhole photographic lens is comprised of pin hole and curved reflector, it is characterized in that, pin hole is positioned on the front baffle plate of curved reflector, and light projects the upper photosensitive imaging of imageing sensor (5) of camera by unthreaded hole (4).

2. reflective pinhole photographic lens according to claim 1 is characterized in that curved reflector is comprised of micro reflector array, and the angle of each micro-reflector is different, makes its light reflection that just pin hole can be come to direction initialization.

3. reflective pinhole photographic lens according to claim 1 is characterized in that at the cross-over that again converges one unthreaded hole being set, and can be controlled to image sharpness by changing the unthreaded hole size.

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