Small Narrow Field Optical Imaging Lens for Portable Devices
A technology of optical imaging lens and portable equipment, applied in optics, optical components, instruments, etc., can solve the problems of large volume and high cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0017] figure 1 A schematic cross-sectional structure diagram of the optical imaging lens 100 according to the first embodiment of the present invention is shown. The optical imaging lens 100 sequentially includes an aperture AS, a front lens group F10 and a rear lens group R10 from the object side to the image side, The optical imaging lens 100 also includes an IR cut filter disposed between the front lens group F10 and an image sensor on the imaging surface.
[0018] The front lens group F10 includes a first lens L11 that is convex on the object side S1 and convex on the image side S2, and a second lens L11 that is concave on the object side S3 and concave on the image side S4 and has a negative refractive power. Lens L12; the rear lens group R10 includes a third lens L13 that is concave on the object side S5 and convex on the image side S6, and a fourth lens L13 that is concave on the object side S7 and concave in the vicinity of the optical axis on the image side S8 The l...
no. 2 example
[0040] The optical imaging lens 100 in the first embodiment is modified to include a reflective element with a flat reflective surface to reflect light passing through the front lens group F10. figure 2 A schematic cross-sectional structure diagram of the optical imaging lens 200 according to the second embodiment of the present invention is shown. The optical imaging lens 200 sequentially includes a front lens group F20 arranged along a first optical axis I1 from the object side to the image side, a reflective assembly 250 with a flat reflective surface to change the direction of an incident light, and a The rear lens group R20 is arranged along a second optical axis I2. In the second embodiment, the second optical axis I2 intersects the first optical axis I1 at an angle of 90 degrees.
[0041] The front lens group F20 includes a first lens L21 that is convex on the object side S1 and convex on the image side S2, and a second lens L21 that is concave on the object side S3 a...
no. 3 example
[0055] image 3 A schematic cross-sectional structure diagram of an optical imaging lens 300 according to a third embodiment of the present invention is shown. In this embodiment, the reflective component 350 is arranged such that the second optical axis I2 intersects the first optical axis I1 at an angle other than 90 degrees. The included angle should preferably meet the following conditions:
[0056] 75 degrees ≦ angle ≦ 90 degrees
[0057] If the included angle is less than 75 degrees, the imaging plane must be inclined at a very large angle. This will adversely affect the optical properties and surface of the optical imaging lens 300 . If the included angle is greater than 90 degrees, the lateral depth of the lens 300 must be increased.
[0058] These lenses may be the same or similar to the lenses described in the second embodiment. The detailed optical data of the optical imaging lens 300 may also be the same as or similar to that of the optical imaging lens 200 de...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More