DETAILED ACTION
Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Claim Rejections - 35 USC § 102
The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action:
A person shall be entitled to a patent unless –
(a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention.
Claim(s) 1 and 3 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Chen TW 202111379.
Regarding claim 1, Chen teaches an ultra short throw projection lens, includes a first lens group 11 (fig. 2 lens group 140)and a second lens group 22 (lens group 150), the image source IMA is first projected into an intermediate image by the second lens group 22, then the intermediate image is projected into a final image on the screen side by the first lens group 11, which complies with 0.23≤TR≤0.45 (.22 page 7 last paragraph before table) and 1.6≤|IMH2|/|IMH1|≤3, (see table [0053] RF/IMH = 2.9) TR is the throw ratio of the ultra-short throw projection lens, IMH1 is the maximum image height of the image source, IMH2 is the maximum image height of the intermediate image, the second lens group includes an aperture A, and the aperture A has an F/# between 1.6˜3.2 (aperture 1.8 see page 7 last paragraph before table 1).
Regarding claim 3, Chen teaches the ultra short throw projection lens as claimed in claim 1, wherein the first lens group 11 includes a first aspherical lens (fig. 2 L6 see page 5 2nd last paragraph) with a concave surface facing the image source side, and a second aspherical lens (fig. 2 L4 see page 5 2nd last paragraph) with a concave surface facing the imaging side.
Claim Rejections - 35 USC § 103
The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action:
A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.
Claim(s) 9 is/are rejected under 35 U.S.C. 103 as being unpatentable over Chen TW 202111379.
Regarding claim 9, Chen teaches the ultra short throw projection lens as claimed in claim 1 but does not teach wherein the ultra short throw projection lens further includes a reflective element located between the first lens group and the second lens group for changing the direction of the optical axis. However placing a reflective element between lens groups to change direction of the optical axis for the purpose of making the device more compact would have been obvious to one of ordinary skill in the art and examiner takes official notice of this.
Therefore, it would have been obvious to an ordinarily skilled artisan before the effective filing date of the claimed invention to modify Chen to include reflective element between lens groups to change direction of the optical axis for the purpose of making the device more compact.
Conclusion
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/PHU VU/Primary Examiner, Art Unit 2871
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